| File: | jdk/src/hotspot/share/opto/compile.cpp |
| Warning: | line 1383, column 14 Although the value stored to 'to' is used in the enclosing expression, the value is never actually read from 'to' |
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| 1 | /* |
| 2 | * Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 20 | * or visit www.oracle.com if you need additional information or have any |
| 21 | * questions. |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | #include "precompiled.hpp" |
| 26 | #include "jvm_io.h" |
| 27 | #include "asm/macroAssembler.hpp" |
| 28 | #include "asm/macroAssembler.inline.hpp" |
| 29 | #include "ci/ciReplay.hpp" |
| 30 | #include "classfile/javaClasses.hpp" |
| 31 | #include "code/exceptionHandlerTable.hpp" |
| 32 | #include "code/nmethod.hpp" |
| 33 | #include "compiler/compileBroker.hpp" |
| 34 | #include "compiler/compileLog.hpp" |
| 35 | #include "compiler/disassembler.hpp" |
| 36 | #include "compiler/oopMap.hpp" |
| 37 | #include "gc/shared/barrierSet.hpp" |
| 38 | #include "gc/shared/c2/barrierSetC2.hpp" |
| 39 | #include "jfr/jfrEvents.hpp" |
| 40 | #include "memory/resourceArea.hpp" |
| 41 | #include "opto/addnode.hpp" |
| 42 | #include "opto/block.hpp" |
| 43 | #include "opto/c2compiler.hpp" |
| 44 | #include "opto/callGenerator.hpp" |
| 45 | #include "opto/callnode.hpp" |
| 46 | #include "opto/castnode.hpp" |
| 47 | #include "opto/cfgnode.hpp" |
| 48 | #include "opto/chaitin.hpp" |
| 49 | #include "opto/compile.hpp" |
| 50 | #include "opto/connode.hpp" |
| 51 | #include "opto/convertnode.hpp" |
| 52 | #include "opto/divnode.hpp" |
| 53 | #include "opto/escape.hpp" |
| 54 | #include "opto/idealGraphPrinter.hpp" |
| 55 | #include "opto/loopnode.hpp" |
| 56 | #include "opto/machnode.hpp" |
| 57 | #include "opto/macro.hpp" |
| 58 | #include "opto/matcher.hpp" |
| 59 | #include "opto/mathexactnode.hpp" |
| 60 | #include "opto/memnode.hpp" |
| 61 | #include "opto/mulnode.hpp" |
| 62 | #include "opto/narrowptrnode.hpp" |
| 63 | #include "opto/node.hpp" |
| 64 | #include "opto/opcodes.hpp" |
| 65 | #include "opto/output.hpp" |
| 66 | #include "opto/parse.hpp" |
| 67 | #include "opto/phaseX.hpp" |
| 68 | #include "opto/rootnode.hpp" |
| 69 | #include "opto/runtime.hpp" |
| 70 | #include "opto/stringopts.hpp" |
| 71 | #include "opto/type.hpp" |
| 72 | #include "opto/vector.hpp" |
| 73 | #include "opto/vectornode.hpp" |
| 74 | #include "runtime/globals_extension.hpp" |
| 75 | #include "runtime/sharedRuntime.hpp" |
| 76 | #include "runtime/signature.hpp" |
| 77 | #include "runtime/stubRoutines.hpp" |
| 78 | #include "runtime/timer.hpp" |
| 79 | #include "utilities/align.hpp" |
| 80 | #include "utilities/copy.hpp" |
| 81 | #include "utilities/macros.hpp" |
| 82 | #include "utilities/resourceHash.hpp" |
| 83 | |
| 84 | |
| 85 | // -------------------- Compile::mach_constant_base_node ----------------------- |
| 86 | // Constant table base node singleton. |
| 87 | MachConstantBaseNode* Compile::mach_constant_base_node() { |
| 88 | if (_mach_constant_base_node == NULL__null) { |
| 89 | _mach_constant_base_node = new MachConstantBaseNode(); |
| 90 | _mach_constant_base_node->add_req(C->root()); |
| 91 | } |
| 92 | return _mach_constant_base_node; |
| 93 | } |
| 94 | |
| 95 | |
| 96 | /// Support for intrinsics. |
| 97 | |
| 98 | // Return the index at which m must be inserted (or already exists). |
| 99 | // The sort order is by the address of the ciMethod, with is_virtual as minor key. |
| 100 | class IntrinsicDescPair { |
| 101 | private: |
| 102 | ciMethod* _m; |
| 103 | bool _is_virtual; |
| 104 | public: |
| 105 | IntrinsicDescPair(ciMethod* m, bool is_virtual) : _m(m), _is_virtual(is_virtual) {} |
| 106 | static int compare(IntrinsicDescPair* const& key, CallGenerator* const& elt) { |
| 107 | ciMethod* m= elt->method(); |
| 108 | ciMethod* key_m = key->_m; |
| 109 | if (key_m < m) return -1; |
| 110 | else if (key_m > m) return 1; |
| 111 | else { |
| 112 | bool is_virtual = elt->is_virtual(); |
| 113 | bool key_virtual = key->_is_virtual; |
| 114 | if (key_virtual < is_virtual) return -1; |
| 115 | else if (key_virtual > is_virtual) return 1; |
| 116 | else return 0; |
| 117 | } |
| 118 | } |
| 119 | }; |
| 120 | int Compile::intrinsic_insertion_index(ciMethod* m, bool is_virtual, bool& found) { |
| 121 | #ifdef ASSERT1 |
| 122 | for (int i = 1; i < _intrinsics.length(); i++) { |
| 123 | CallGenerator* cg1 = _intrinsics.at(i-1); |
| 124 | CallGenerator* cg2 = _intrinsics.at(i); |
| 125 | assert(cg1->method() != cg2->method()do { if (!(cg1->method() != cg2->method() ? cg1->method () < cg2->method() : cg1->is_virtual() < cg2-> is_virtual())) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 128, "assert(" "cg1->method() != cg2->method() ? cg1->method() < cg2->method() : cg1->is_virtual() < cg2->is_virtual()" ") failed", "compiler intrinsics list must stay sorted"); :: breakpoint(); } } while (0) |
| 126 | ? cg1->method() < cg2->method()do { if (!(cg1->method() != cg2->method() ? cg1->method () < cg2->method() : cg1->is_virtual() < cg2-> is_virtual())) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 128, "assert(" "cg1->method() != cg2->method() ? cg1->method() < cg2->method() : cg1->is_virtual() < cg2->is_virtual()" ") failed", "compiler intrinsics list must stay sorted"); :: breakpoint(); } } while (0) |
| 127 | : cg1->is_virtual() < cg2->is_virtual(),do { if (!(cg1->method() != cg2->method() ? cg1->method () < cg2->method() : cg1->is_virtual() < cg2-> is_virtual())) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 128, "assert(" "cg1->method() != cg2->method() ? cg1->method() < cg2->method() : cg1->is_virtual() < cg2->is_virtual()" ") failed", "compiler intrinsics list must stay sorted"); :: breakpoint(); } } while (0) |
| 128 | "compiler intrinsics list must stay sorted")do { if (!(cg1->method() != cg2->method() ? cg1->method () < cg2->method() : cg1->is_virtual() < cg2-> is_virtual())) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 128, "assert(" "cg1->method() != cg2->method() ? cg1->method() < cg2->method() : cg1->is_virtual() < cg2->is_virtual()" ") failed", "compiler intrinsics list must stay sorted"); :: breakpoint(); } } while (0); |
| 129 | } |
| 130 | #endif |
| 131 | IntrinsicDescPair pair(m, is_virtual); |
| 132 | return _intrinsics.find_sorted<IntrinsicDescPair*, IntrinsicDescPair::compare>(&pair, found); |
| 133 | } |
| 134 | |
| 135 | void Compile::register_intrinsic(CallGenerator* cg) { |
| 136 | bool found = false; |
| 137 | int index = intrinsic_insertion_index(cg->method(), cg->is_virtual(), found); |
| 138 | assert(!found, "registering twice")do { if (!(!found)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 138, "assert(" "!found" ") failed", "registering twice"); :: breakpoint(); } } while (0); |
| 139 | _intrinsics.insert_before(index, cg); |
| 140 | assert(find_intrinsic(cg->method(), cg->is_virtual()) == cg, "registration worked")do { if (!(find_intrinsic(cg->method(), cg->is_virtual( )) == cg)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 140, "assert(" "find_intrinsic(cg->method(), cg->is_virtual()) == cg" ") failed", "registration worked"); ::breakpoint(); } } while (0); |
| 141 | } |
| 142 | |
| 143 | CallGenerator* Compile::find_intrinsic(ciMethod* m, bool is_virtual) { |
| 144 | assert(m->is_loaded(), "don't try this on unloaded methods")do { if (!(m->is_loaded())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 144, "assert(" "m->is_loaded()" ") failed", "don't try this on unloaded methods" ); ::breakpoint(); } } while (0); |
| 145 | if (_intrinsics.length() > 0) { |
| 146 | bool found = false; |
| 147 | int index = intrinsic_insertion_index(m, is_virtual, found); |
| 148 | if (found) { |
| 149 | return _intrinsics.at(index); |
| 150 | } |
| 151 | } |
| 152 | // Lazily create intrinsics for intrinsic IDs well-known in the runtime. |
| 153 | if (m->intrinsic_id() != vmIntrinsics::_none && |
| 154 | m->intrinsic_id() <= vmIntrinsics::LAST_COMPILER_INLINE) { |
| 155 | CallGenerator* cg = make_vm_intrinsic(m, is_virtual); |
| 156 | if (cg != NULL__null) { |
| 157 | // Save it for next time: |
| 158 | register_intrinsic(cg); |
| 159 | return cg; |
| 160 | } else { |
| 161 | gather_intrinsic_statistics(m->intrinsic_id(), is_virtual, _intrinsic_disabled); |
| 162 | } |
| 163 | } |
| 164 | return NULL__null; |
| 165 | } |
| 166 | |
| 167 | // Compile::make_vm_intrinsic is defined in library_call.cpp. |
| 168 | |
| 169 | #ifndef PRODUCT |
| 170 | // statistics gathering... |
| 171 | |
| 172 | juint Compile::_intrinsic_hist_count[vmIntrinsics::number_of_intrinsics()] = {0}; |
| 173 | jubyte Compile::_intrinsic_hist_flags[vmIntrinsics::number_of_intrinsics()] = {0}; |
| 174 | |
| 175 | inline int as_int(vmIntrinsics::ID id) { |
| 176 | return vmIntrinsics::as_int(id); |
| 177 | } |
| 178 | |
| 179 | bool Compile::gather_intrinsic_statistics(vmIntrinsics::ID id, bool is_virtual, int flags) { |
| 180 | assert(id > vmIntrinsics::_none && id < vmIntrinsics::ID_LIMIT, "oob")do { if (!(id > vmIntrinsics::_none && id < vmIntrinsics ::ID_LIMIT)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 180, "assert(" "id > vmIntrinsics::_none && id < vmIntrinsics::ID_LIMIT" ") failed", "oob"); ::breakpoint(); } } while (0); |
| 181 | int oflags = _intrinsic_hist_flags[as_int(id)]; |
| 182 | assert(flags != 0, "what happened?")do { if (!(flags != 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 182, "assert(" "flags != 0" ") failed", "what happened?"); :: breakpoint(); } } while (0); |
| 183 | if (is_virtual) { |
| 184 | flags |= _intrinsic_virtual; |
| 185 | } |
| 186 | bool changed = (flags != oflags); |
| 187 | if ((flags & _intrinsic_worked) != 0) { |
| 188 | juint count = (_intrinsic_hist_count[as_int(id)] += 1); |
| 189 | if (count == 1) { |
| 190 | changed = true; // first time |
| 191 | } |
| 192 | // increment the overall count also: |
| 193 | _intrinsic_hist_count[as_int(vmIntrinsics::_none)] += 1; |
| 194 | } |
| 195 | if (changed) { |
| 196 | if (((oflags ^ flags) & _intrinsic_virtual) != 0) { |
| 197 | // Something changed about the intrinsic's virtuality. |
| 198 | if ((flags & _intrinsic_virtual) != 0) { |
| 199 | // This is the first use of this intrinsic as a virtual call. |
| 200 | if (oflags != 0) { |
| 201 | // We already saw it as a non-virtual, so note both cases. |
| 202 | flags |= _intrinsic_both; |
| 203 | } |
| 204 | } else if ((oflags & _intrinsic_both) == 0) { |
| 205 | // This is the first use of this intrinsic as a non-virtual |
| 206 | flags |= _intrinsic_both; |
| 207 | } |
| 208 | } |
| 209 | _intrinsic_hist_flags[as_int(id)] = (jubyte) (oflags | flags); |
| 210 | } |
| 211 | // update the overall flags also: |
| 212 | _intrinsic_hist_flags[as_int(vmIntrinsics::_none)] |= (jubyte) flags; |
| 213 | return changed; |
| 214 | } |
| 215 | |
| 216 | static char* format_flags(int flags, char* buf) { |
| 217 | buf[0] = 0; |
| 218 | if ((flags & Compile::_intrinsic_worked) != 0) strcat(buf, ",worked"); |
| 219 | if ((flags & Compile::_intrinsic_failed) != 0) strcat(buf, ",failed"); |
| 220 | if ((flags & Compile::_intrinsic_disabled) != 0) strcat(buf, ",disabled"); |
| 221 | if ((flags & Compile::_intrinsic_virtual) != 0) strcat(buf, ",virtual"); |
| 222 | if ((flags & Compile::_intrinsic_both) != 0) strcat(buf, ",nonvirtual"); |
| 223 | if (buf[0] == 0) strcat(buf, ","); |
| 224 | assert(buf[0] == ',', "must be")do { if (!(buf[0] == ',')) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 224, "assert(" "buf[0] == ','" ") failed", "must be"); ::breakpoint (); } } while (0); |
| 225 | return &buf[1]; |
| 226 | } |
| 227 | |
| 228 | void Compile::print_intrinsic_statistics() { |
| 229 | char flagsbuf[100]; |
| 230 | ttyLocker ttyl; |
| 231 | if (xtty != NULL__null) xtty->head("statistics type='intrinsic'"); |
| 232 | tty->print_cr("Compiler intrinsic usage:"); |
| 233 | juint total = _intrinsic_hist_count[as_int(vmIntrinsics::_none)]; |
| 234 | if (total == 0) total = 1; // avoid div0 in case of no successes |
| 235 | #define PRINT_STAT_LINE(name, c, f)tty->print_cr(" %4d (%4.1f%%) %s (%s)", (int)(c), ((c) * 100.0 ) / total, name, f); \ |
| 236 | tty->print_cr(" %4d (%4.1f%%) %s (%s)", (int)(c), ((c) * 100.0) / total, name, f); |
| 237 | for (auto id : EnumRange<vmIntrinsicID>{}) { |
| 238 | int flags = _intrinsic_hist_flags[as_int(id)]; |
| 239 | juint count = _intrinsic_hist_count[as_int(id)]; |
| 240 | if ((flags | count) != 0) { |
| 241 | PRINT_STAT_LINE(vmIntrinsics::name_at(id), count, format_flags(flags, flagsbuf))tty->print_cr(" %4d (%4.1f%%) %s (%s)", (int)(count), ((count ) * 100.0) / total, vmIntrinsics::name_at(id), format_flags(flags , flagsbuf));; |
| 242 | } |
| 243 | } |
| 244 | PRINT_STAT_LINE("total", total, format_flags(_intrinsic_hist_flags[as_int(vmIntrinsics::_none)], flagsbuf))tty->print_cr(" %4d (%4.1f%%) %s (%s)", (int)(total), ((total ) * 100.0) / total, "total", format_flags(_intrinsic_hist_flags [as_int(vmIntrinsics::_none)], flagsbuf));; |
| 245 | if (xtty != NULL__null) xtty->tail("statistics"); |
| 246 | } |
| 247 | |
| 248 | void Compile::print_statistics() { |
| 249 | { ttyLocker ttyl; |
| 250 | if (xtty != NULL__null) xtty->head("statistics type='opto'"); |
| 251 | Parse::print_statistics(); |
| 252 | PhaseCCP::print_statistics(); |
| 253 | PhaseRegAlloc::print_statistics(); |
| 254 | PhaseOutput::print_statistics(); |
| 255 | PhasePeephole::print_statistics(); |
| 256 | PhaseIdealLoop::print_statistics(); |
| 257 | if (xtty != NULL__null) xtty->tail("statistics"); |
| 258 | } |
| 259 | if (_intrinsic_hist_flags[as_int(vmIntrinsics::_none)] != 0) { |
| 260 | // put this under its own <statistics> element. |
| 261 | print_intrinsic_statistics(); |
| 262 | } |
| 263 | } |
| 264 | #endif //PRODUCT |
| 265 | |
| 266 | void Compile::gvn_replace_by(Node* n, Node* nn) { |
| 267 | for (DUIterator_Last imin, i = n->last_outs(imin); i >= imin; ) { |
| 268 | Node* use = n->last_out(i); |
| 269 | bool is_in_table = initial_gvn()->hash_delete(use); |
| 270 | uint uses_found = 0; |
| 271 | for (uint j = 0; j < use->len(); j++) { |
| 272 | if (use->in(j) == n) { |
| 273 | if (j < use->req()) |
| 274 | use->set_req(j, nn); |
| 275 | else |
| 276 | use->set_prec(j, nn); |
| 277 | uses_found++; |
| 278 | } |
| 279 | } |
| 280 | if (is_in_table) { |
| 281 | // reinsert into table |
| 282 | initial_gvn()->hash_find_insert(use); |
| 283 | } |
| 284 | record_for_igvn(use); |
| 285 | i -= uses_found; // we deleted 1 or more copies of this edge |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | |
| 290 | // Identify all nodes that are reachable from below, useful. |
| 291 | // Use breadth-first pass that records state in a Unique_Node_List, |
| 292 | // recursive traversal is slower. |
| 293 | void Compile::identify_useful_nodes(Unique_Node_List &useful) { |
| 294 | int estimated_worklist_size = live_nodes(); |
| 295 | useful.map( estimated_worklist_size, NULL__null ); // preallocate space |
| 296 | |
| 297 | // Initialize worklist |
| 298 | if (root() != NULL__null) { useful.push(root()); } |
| 299 | // If 'top' is cached, declare it useful to preserve cached node |
| 300 | if( cached_top_node() ) { useful.push(cached_top_node()); } |
| 301 | |
| 302 | // Push all useful nodes onto the list, breadthfirst |
| 303 | for( uint next = 0; next < useful.size(); ++next ) { |
| 304 | assert( next < unique(), "Unique useful nodes < total nodes")do { if (!(next < unique())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 304, "assert(" "next < unique()" ") failed", "Unique useful nodes < total nodes" ); ::breakpoint(); } } while (0); |
| 305 | Node *n = useful.at(next); |
| 306 | uint max = n->len(); |
| 307 | for( uint i = 0; i < max; ++i ) { |
| 308 | Node *m = n->in(i); |
| 309 | if (not_a_node(m)) continue; |
| 310 | useful.push(m); |
| 311 | } |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | // Update dead_node_list with any missing dead nodes using useful |
| 316 | // list. Consider all non-useful nodes to be useless i.e., dead nodes. |
| 317 | void Compile::update_dead_node_list(Unique_Node_List &useful) { |
| 318 | uint max_idx = unique(); |
| 319 | VectorSet& useful_node_set = useful.member_set(); |
| 320 | |
| 321 | for (uint node_idx = 0; node_idx < max_idx; node_idx++) { |
| 322 | // If node with index node_idx is not in useful set, |
| 323 | // mark it as dead in dead node list. |
| 324 | if (!useful_node_set.test(node_idx)) { |
| 325 | record_dead_node(node_idx); |
| 326 | } |
| 327 | } |
| 328 | } |
| 329 | |
| 330 | void Compile::remove_useless_late_inlines(GrowableArray<CallGenerator*>* inlines, Unique_Node_List &useful) { |
| 331 | int shift = 0; |
| 332 | for (int i = 0; i < inlines->length(); i++) { |
| 333 | CallGenerator* cg = inlines->at(i); |
| 334 | if (useful.member(cg->call_node())) { |
| 335 | if (shift > 0) { |
| 336 | inlines->at_put(i - shift, cg); |
| 337 | } |
| 338 | } else { |
| 339 | shift++; // skip over the dead element |
| 340 | } |
| 341 | } |
| 342 | if (shift > 0) { |
| 343 | inlines->trunc_to(inlines->length() - shift); // remove last elements from compacted array |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | void Compile::remove_useless_late_inlines(GrowableArray<CallGenerator*>* inlines, Node* dead) { |
| 348 | assert(dead != NULL && dead->is_Call(), "sanity")do { if (!(dead != __null && dead->is_Call())) { ( *g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 348, "assert(" "dead != __null && dead->is_Call()" ") failed", "sanity"); ::breakpoint(); } } while (0); |
| 349 | int found = 0; |
| 350 | for (int i = 0; i < inlines->length(); i++) { |
| 351 | if (inlines->at(i)->call_node() == dead) { |
| 352 | inlines->remove_at(i); |
| 353 | found++; |
| 354 | NOT_DEBUG( break; ) // elements are unique, so exit early |
| 355 | } |
| 356 | } |
| 357 | assert(found <= 1, "not unique")do { if (!(found <= 1)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 357, "assert(" "found <= 1" ") failed", "not unique"); :: breakpoint(); } } while (0); |
| 358 | } |
| 359 | |
| 360 | void Compile::remove_useless_nodes(GrowableArray<Node*>& node_list, Unique_Node_List& useful) { |
| 361 | for (int i = node_list.length() - 1; i >= 0; i--) { |
| 362 | Node* n = node_list.at(i); |
| 363 | if (!useful.member(n)) { |
| 364 | node_list.delete_at(i); // replaces i-th with last element which is known to be useful (already processed) |
| 365 | } |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | void Compile::remove_useless_node(Node* dead) { |
| 370 | remove_modified_node(dead); |
| 371 | |
| 372 | // Constant node that has no out-edges and has only one in-edge from |
| 373 | // root is usually dead. However, sometimes reshaping walk makes |
| 374 | // it reachable by adding use edges. So, we will NOT count Con nodes |
| 375 | // as dead to be conservative about the dead node count at any |
| 376 | // given time. |
| 377 | if (!dead->is_Con()) { |
| 378 | record_dead_node(dead->_idx); |
| 379 | } |
| 380 | if (dead->is_macro()) { |
| 381 | remove_macro_node(dead); |
| 382 | } |
| 383 | if (dead->is_expensive()) { |
| 384 | remove_expensive_node(dead); |
| 385 | } |
| 386 | if (dead->Opcode() == Op_Opaque4) { |
| 387 | remove_skeleton_predicate_opaq(dead); |
| 388 | } |
| 389 | if (dead->for_post_loop_opts_igvn()) { |
| 390 | remove_from_post_loop_opts_igvn(dead); |
| 391 | } |
| 392 | if (dead->is_Call()) { |
| 393 | remove_useless_late_inlines( &_late_inlines, dead); |
| 394 | remove_useless_late_inlines( &_string_late_inlines, dead); |
| 395 | remove_useless_late_inlines( &_boxing_late_inlines, dead); |
| 396 | remove_useless_late_inlines(&_vector_reboxing_late_inlines, dead); |
| 397 | } |
| 398 | BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2(); |
| 399 | bs->unregister_potential_barrier_node(dead); |
| 400 | } |
| 401 | |
| 402 | // Disconnect all useless nodes by disconnecting those at the boundary. |
| 403 | void Compile::remove_useless_nodes(Unique_Node_List &useful) { |
| 404 | uint next = 0; |
| 405 | while (next < useful.size()) { |
| 406 | Node *n = useful.at(next++); |
| 407 | if (n->is_SafePoint()) { |
| 408 | // We're done with a parsing phase. Replaced nodes are not valid |
| 409 | // beyond that point. |
| 410 | n->as_SafePoint()->delete_replaced_nodes(); |
| 411 | } |
| 412 | // Use raw traversal of out edges since this code removes out edges |
| 413 | int max = n->outcnt(); |
| 414 | for (int j = 0; j < max; ++j) { |
| 415 | Node* child = n->raw_out(j); |
| 416 | if (!useful.member(child)) { |
| 417 | assert(!child->is_top() || child != top(),do { if (!(!child->is_top() || child != top())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 418, "assert(" "!child->is_top() || child != top()" ") failed" , "If top is cached in Compile object it is in useful list"); ::breakpoint(); } } while (0) |
| 418 | "If top is cached in Compile object it is in useful list")do { if (!(!child->is_top() || child != top())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 418, "assert(" "!child->is_top() || child != top()" ") failed" , "If top is cached in Compile object it is in useful list"); ::breakpoint(); } } while (0); |
| 419 | // Only need to remove this out-edge to the useless node |
| 420 | n->raw_del_out(j); |
| 421 | --j; |
| 422 | --max; |
| 423 | } |
| 424 | } |
| 425 | if (n->outcnt() == 1 && n->has_special_unique_user()) { |
| 426 | record_for_igvn(n->unique_out()); |
| 427 | } |
| 428 | } |
| 429 | |
| 430 | remove_useless_nodes(_macro_nodes, useful); // remove useless macro nodes |
| 431 | remove_useless_nodes(_predicate_opaqs, useful); // remove useless predicate opaque nodes |
| 432 | remove_useless_nodes(_skeleton_predicate_opaqs, useful); |
| 433 | remove_useless_nodes(_expensive_nodes, useful); // remove useless expensive nodes |
| 434 | remove_useless_nodes(_for_post_loop_igvn, useful); // remove useless node recorded for post loop opts IGVN pass |
| 435 | remove_useless_coarsened_locks(useful); // remove useless coarsened locks nodes |
| 436 | |
| 437 | BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2(); |
| 438 | bs->eliminate_useless_gc_barriers(useful, this); |
| 439 | // clean up the late inline lists |
| 440 | remove_useless_late_inlines( &_late_inlines, useful); |
| 441 | remove_useless_late_inlines( &_string_late_inlines, useful); |
| 442 | remove_useless_late_inlines( &_boxing_late_inlines, useful); |
| 443 | remove_useless_late_inlines(&_vector_reboxing_late_inlines, useful); |
| 444 | debug_only(verify_graph_edges(true/*check for no_dead_code*/);)verify_graph_edges(true ); |
| 445 | } |
| 446 | |
| 447 | // ============================================================================ |
| 448 | //------------------------------CompileWrapper--------------------------------- |
| 449 | class CompileWrapper : public StackObj { |
| 450 | Compile *const _compile; |
| 451 | public: |
| 452 | CompileWrapper(Compile* compile); |
| 453 | |
| 454 | ~CompileWrapper(); |
| 455 | }; |
| 456 | |
| 457 | CompileWrapper::CompileWrapper(Compile* compile) : _compile(compile) { |
| 458 | // the Compile* pointer is stored in the current ciEnv: |
| 459 | ciEnv* env = compile->env(); |
| 460 | assert(env == ciEnv::current(), "must already be a ciEnv active")do { if (!(env == ciEnv::current())) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 460, "assert(" "env == ciEnv::current()" ") failed", "must already be a ciEnv active" ); ::breakpoint(); } } while (0); |
| 461 | assert(env->compiler_data() == NULL, "compile already active?")do { if (!(env->compiler_data() == __null)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 461, "assert(" "env->compiler_data() == __null" ") failed" , "compile already active?"); ::breakpoint(); } } while (0); |
| 462 | env->set_compiler_data(compile); |
| 463 | assert(compile == Compile::current(), "sanity")do { if (!(compile == Compile::current())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 463, "assert(" "compile == Compile::current()" ") failed", "sanity" ); ::breakpoint(); } } while (0); |
| 464 | |
| 465 | compile->set_type_dict(NULL__null); |
| 466 | compile->set_clone_map(new Dict(cmpkey, hashkey, _compile->comp_arena())); |
| 467 | compile->clone_map().set_clone_idx(0); |
| 468 | compile->set_type_last_size(0); |
| 469 | compile->set_last_tf(NULL__null, NULL__null); |
| 470 | compile->set_indexSet_arena(NULL__null); |
| 471 | compile->set_indexSet_free_block_list(NULL__null); |
| 472 | compile->init_type_arena(); |
| 473 | Type::Initialize(compile); |
| 474 | _compile->begin_method(); |
| 475 | _compile->clone_map().set_debug(_compile->has_method() && _compile->directive()->CloneMapDebugOption); |
| 476 | } |
| 477 | CompileWrapper::~CompileWrapper() { |
| 478 | // simulate crash during compilation |
| 479 | assert(CICrashAt < 0 || _compile->compile_id() != CICrashAt, "just as planned")do { if (!(CICrashAt < 0 || _compile->compile_id() != CICrashAt )) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 479, "assert(" "CICrashAt < 0 || _compile->compile_id() != CICrashAt" ") failed", "just as planned"); ::breakpoint(); } } while (0 ); |
| 480 | |
| 481 | _compile->end_method(); |
| 482 | _compile->env()->set_compiler_data(NULL__null); |
| 483 | } |
| 484 | |
| 485 | |
| 486 | //----------------------------print_compile_messages--------------------------- |
| 487 | void Compile::print_compile_messages() { |
| 488 | #ifndef PRODUCT |
| 489 | // Check if recompiling |
| 490 | if (!subsume_loads() && PrintOpto) { |
| 491 | // Recompiling without allowing machine instructions to subsume loads |
| 492 | tty->print_cr("*********************************************************"); |
| 493 | tty->print_cr("** Bailout: Recompile without subsuming loads **"); |
| 494 | tty->print_cr("*********************************************************"); |
| 495 | } |
| 496 | if ((do_escape_analysis() != DoEscapeAnalysis) && PrintOpto) { |
| 497 | // Recompiling without escape analysis |
| 498 | tty->print_cr("*********************************************************"); |
| 499 | tty->print_cr("** Bailout: Recompile without escape analysis **"); |
| 500 | tty->print_cr("*********************************************************"); |
| 501 | } |
| 502 | if (do_iterative_escape_analysis() != DoEscapeAnalysis && PrintOpto) { |
| 503 | // Recompiling without iterative escape analysis |
| 504 | tty->print_cr("*********************************************************"); |
| 505 | tty->print_cr("** Bailout: Recompile without iterative escape analysis**"); |
| 506 | tty->print_cr("*********************************************************"); |
| 507 | } |
| 508 | if ((eliminate_boxing() != EliminateAutoBox) && PrintOpto) { |
| 509 | // Recompiling without boxing elimination |
| 510 | tty->print_cr("*********************************************************"); |
| 511 | tty->print_cr("** Bailout: Recompile without boxing elimination **"); |
| 512 | tty->print_cr("*********************************************************"); |
| 513 | } |
| 514 | if ((do_locks_coarsening() != EliminateLocks) && PrintOpto) { |
| 515 | // Recompiling without locks coarsening |
| 516 | tty->print_cr("*********************************************************"); |
| 517 | tty->print_cr("** Bailout: Recompile without locks coarsening **"); |
| 518 | tty->print_cr("*********************************************************"); |
| 519 | } |
| 520 | if (env()->break_at_compile()) { |
| 521 | // Open the debugger when compiling this method. |
| 522 | tty->print("### Breaking when compiling: "); |
| 523 | method()->print_short_name(); |
| 524 | tty->cr(); |
| 525 | BREAKPOINT::breakpoint(); |
| 526 | } |
| 527 | |
| 528 | if( PrintOpto ) { |
| 529 | if (is_osr_compilation()) { |
| 530 | tty->print("[OSR]%3d", _compile_id); |
| 531 | } else { |
| 532 | tty->print("%3d", _compile_id); |
| 533 | } |
| 534 | } |
| 535 | #endif |
| 536 | } |
| 537 | |
| 538 | // ============================================================================ |
| 539 | //------------------------------Compile standard------------------------------- |
| 540 | debug_only( int Compile::_debug_idx = 100000; )int Compile::_debug_idx = 100000; |
| 541 | |
| 542 | // Compile a method. entry_bci is -1 for normal compilations and indicates |
| 543 | // the continuation bci for on stack replacement. |
| 544 | |
| 545 | |
| 546 | Compile::Compile( ciEnv* ci_env, ciMethod* target, int osr_bci, |
| 547 | Options options, DirectiveSet* directive) |
| 548 | : Phase(Compiler), |
| 549 | _compile_id(ci_env->compile_id()), |
| 550 | _options(options), |
| 551 | _method(target), |
| 552 | _entry_bci(osr_bci), |
| 553 | _ilt(NULL__null), |
| 554 | _stub_function(NULL__null), |
| 555 | _stub_name(NULL__null), |
| 556 | _stub_entry_point(NULL__null), |
| 557 | _max_node_limit(MaxNodeLimit), |
| 558 | _post_loop_opts_phase(false), |
| 559 | _inlining_progress(false), |
| 560 | _inlining_incrementally(false), |
| 561 | _do_cleanup(false), |
| 562 | _has_reserved_stack_access(target->has_reserved_stack_access()), |
| 563 | #ifndef PRODUCT |
| 564 | _igv_idx(0), |
| 565 | _trace_opto_output(directive->TraceOptoOutputOption), |
| 566 | _print_ideal(directive->PrintIdealOption), |
| 567 | #endif |
| 568 | _has_method_handle_invokes(false), |
| 569 | _clinit_barrier_on_entry(false), |
| 570 | _stress_seed(0), |
| 571 | _comp_arena(mtCompiler), |
| 572 | _barrier_set_state(BarrierSet::barrier_set()->barrier_set_c2()->create_barrier_state(comp_arena())), |
| 573 | _env(ci_env), |
| 574 | _directive(directive), |
| 575 | _log(ci_env->log()), |
| 576 | _failure_reason(NULL__null), |
| 577 | _intrinsics (comp_arena(), 0, 0, NULL__null), |
| 578 | _macro_nodes (comp_arena(), 8, 0, NULL__null), |
| 579 | _predicate_opaqs (comp_arena(), 8, 0, NULL__null), |
| 580 | _skeleton_predicate_opaqs (comp_arena(), 8, 0, NULL__null), |
| 581 | _expensive_nodes (comp_arena(), 8, 0, NULL__null), |
| 582 | _for_post_loop_igvn(comp_arena(), 8, 0, NULL__null), |
| 583 | _coarsened_locks (comp_arena(), 8, 0, NULL__null), |
| 584 | _congraph(NULL__null), |
| 585 | NOT_PRODUCT(_printer(NULL) COMMA)_printer(__null) , |
| 586 | _dead_node_list(comp_arena()), |
| 587 | _dead_node_count(0), |
| 588 | _node_arena(mtCompiler), |
| 589 | _old_arena(mtCompiler), |
| 590 | _mach_constant_base_node(NULL__null), |
| 591 | _Compile_types(mtCompiler), |
| 592 | _initial_gvn(NULL__null), |
| 593 | _for_igvn(NULL__null), |
| 594 | _late_inlines(comp_arena(), 2, 0, NULL__null), |
| 595 | _string_late_inlines(comp_arena(), 2, 0, NULL__null), |
| 596 | _boxing_late_inlines(comp_arena(), 2, 0, NULL__null), |
| 597 | _vector_reboxing_late_inlines(comp_arena(), 2, 0, NULL__null), |
| 598 | _late_inlines_pos(0), |
| 599 | _number_of_mh_late_inlines(0), |
| 600 | _native_invokers(comp_arena(), 1, 0, NULL__null), |
| 601 | _print_inlining_stream(NULL__null), |
| 602 | _print_inlining_list(NULL__null), |
| 603 | _print_inlining_idx(0), |
| 604 | _print_inlining_output(NULL__null), |
| 605 | _replay_inline_data(NULL__null), |
| 606 | _java_calls(0), |
| 607 | _inner_loops(0), |
| 608 | _interpreter_frame_size(0) |
| 609 | #ifndef PRODUCT |
| 610 | , _in_dump_cnt(0) |
| 611 | #endif |
| 612 | { |
| 613 | C = this; |
| 614 | CompileWrapper cw(this); |
| 615 | |
| 616 | if (CITimeVerbose) { |
| 617 | tty->print(" "); |
| 618 | target->holder()->name()->print(); |
| 619 | tty->print("."); |
| 620 | target->print_short_name(); |
| 621 | tty->print(" "); |
| 622 | } |
| 623 | TraceTime t1("Total compilation time", &_t_totalCompilation, CITime, CITimeVerbose); |
| 624 | TraceTime t2(NULL__null, &_t_methodCompilation, CITime, false); |
| 625 | |
| 626 | #if defined(SUPPORT_ASSEMBLY) || defined(SUPPORT_ABSTRACT_ASSEMBLY) |
| 627 | bool print_opto_assembly = directive->PrintOptoAssemblyOption; |
| 628 | // We can always print a disassembly, either abstract (hex dump) or |
| 629 | // with the help of a suitable hsdis library. Thus, we should not |
| 630 | // couple print_assembly and print_opto_assembly controls. |
| 631 | // But: always print opto and regular assembly on compile command 'print'. |
| 632 | bool print_assembly = directive->PrintAssemblyOption; |
| 633 | set_print_assembly(print_opto_assembly || print_assembly); |
| 634 | #else |
| 635 | set_print_assembly(false); // must initialize. |
| 636 | #endif |
| 637 | |
| 638 | #ifndef PRODUCT |
| 639 | set_parsed_irreducible_loop(false); |
| 640 | |
| 641 | if (directive->ReplayInlineOption) { |
| 642 | _replay_inline_data = ciReplay::load_inline_data(method(), entry_bci(), ci_env->comp_level()); |
| 643 | } |
| 644 | #endif |
| 645 | set_print_inlining(directive->PrintInliningOption || PrintOptoInlining); |
| 646 | set_print_intrinsics(directive->PrintIntrinsicsOption); |
| 647 | set_has_irreducible_loop(true); // conservative until build_loop_tree() reset it |
| 648 | |
| 649 | if (ProfileTraps RTM_OPT_ONLY( || UseRTMLocking )|| UseRTMLocking) { |
| 650 | // Make sure the method being compiled gets its own MDO, |
| 651 | // so we can at least track the decompile_count(). |
| 652 | // Need MDO to record RTM code generation state. |
| 653 | method()->ensure_method_data(); |
| 654 | } |
| 655 | |
| 656 | Init(::AliasLevel); |
| 657 | |
| 658 | |
| 659 | print_compile_messages(); |
| 660 | |
| 661 | _ilt = InlineTree::build_inline_tree_root(); |
| 662 | |
| 663 | // Even if NO memory addresses are used, MergeMem nodes must have at least 1 slice |
| 664 | assert(num_alias_types() >= AliasIdxRaw, "")do { if (!(num_alias_types() >= AliasIdxRaw)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 664, "assert(" "num_alias_types() >= AliasIdxRaw" ") failed" , ""); ::breakpoint(); } } while (0); |
| 665 | |
| 666 | #define MINIMUM_NODE_HASH1023 1023 |
| 667 | // Node list that Iterative GVN will start with |
| 668 | Unique_Node_List for_igvn(comp_arena()); |
| 669 | set_for_igvn(&for_igvn); |
| 670 | |
| 671 | // GVN that will be run immediately on new nodes |
| 672 | uint estimated_size = method()->code_size()*4+64; |
| 673 | estimated_size = (estimated_size < MINIMUM_NODE_HASH1023 ? MINIMUM_NODE_HASH1023 : estimated_size); |
| 674 | PhaseGVN gvn(node_arena(), estimated_size); |
| 675 | set_initial_gvn(&gvn); |
| 676 | |
| 677 | print_inlining_init(); |
| 678 | { // Scope for timing the parser |
| 679 | TracePhase tp("parse", &timers[_t_parser]); |
| 680 | |
| 681 | // Put top into the hash table ASAP. |
| 682 | initial_gvn()->transform_no_reclaim(top()); |
| 683 | |
| 684 | // Set up tf(), start(), and find a CallGenerator. |
| 685 | CallGenerator* cg = NULL__null; |
| 686 | if (is_osr_compilation()) { |
| 687 | const TypeTuple *domain = StartOSRNode::osr_domain(); |
| 688 | const TypeTuple *range = TypeTuple::make_range(method()->signature()); |
| 689 | init_tf(TypeFunc::make(domain, range)); |
| 690 | StartNode* s = new StartOSRNode(root(), domain); |
| 691 | initial_gvn()->set_type_bottom(s); |
| 692 | init_start(s); |
| 693 | cg = CallGenerator::for_osr(method(), entry_bci()); |
| 694 | } else { |
| 695 | // Normal case. |
| 696 | init_tf(TypeFunc::make(method())); |
| 697 | StartNode* s = new StartNode(root(), tf()->domain()); |
| 698 | initial_gvn()->set_type_bottom(s); |
| 699 | init_start(s); |
| 700 | if (method()->intrinsic_id() == vmIntrinsics::_Reference_get) { |
| 701 | // With java.lang.ref.reference.get() we must go through the |
| 702 | // intrinsic - even when get() is the root |
| 703 | // method of the compile - so that, if necessary, the value in |
| 704 | // the referent field of the reference object gets recorded by |
| 705 | // the pre-barrier code. |
| 706 | cg = find_intrinsic(method(), false); |
| 707 | } |
| 708 | if (cg == NULL__null) { |
| 709 | float past_uses = method()->interpreter_invocation_count(); |
| 710 | float expected_uses = past_uses; |
| 711 | cg = CallGenerator::for_inline(method(), expected_uses); |
| 712 | } |
| 713 | } |
| 714 | if (failing()) return; |
| 715 | if (cg == NULL__null) { |
| 716 | record_method_not_compilable("cannot parse method"); |
| 717 | return; |
| 718 | } |
| 719 | JVMState* jvms = build_start_state(start(), tf()); |
| 720 | if ((jvms = cg->generate(jvms)) == NULL__null) { |
| 721 | if (!failure_reason_is(C2Compiler::retry_class_loading_during_parsing())) { |
| 722 | record_method_not_compilable("method parse failed"); |
| 723 | } |
| 724 | return; |
| 725 | } |
| 726 | GraphKit kit(jvms); |
| 727 | |
| 728 | if (!kit.stopped()) { |
| 729 | // Accept return values, and transfer control we know not where. |
| 730 | // This is done by a special, unique ReturnNode bound to root. |
| 731 | return_values(kit.jvms()); |
| 732 | } |
| 733 | |
| 734 | if (kit.has_exceptions()) { |
| 735 | // Any exceptions that escape from this call must be rethrown |
| 736 | // to whatever caller is dynamically above us on the stack. |
| 737 | // This is done by a special, unique RethrowNode bound to root. |
| 738 | rethrow_exceptions(kit.transfer_exceptions_into_jvms()); |
| 739 | } |
| 740 | |
| 741 | assert(IncrementalInline || (_late_inlines.length() == 0 && !has_mh_late_inlines()), "incremental inlining is off")do { if (!(IncrementalInline || (_late_inlines.length() == 0 && !has_mh_late_inlines()))) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 741, "assert(" "IncrementalInline || (_late_inlines.length() == 0 && !has_mh_late_inlines())" ") failed", "incremental inlining is off"); ::breakpoint(); } } while (0); |
| 742 | |
| 743 | if (_late_inlines.length() == 0 && !has_mh_late_inlines() && !failing() && has_stringbuilder()) { |
| 744 | inline_string_calls(true); |
| 745 | } |
| 746 | |
| 747 | if (failing()) return; |
| 748 | |
| 749 | print_method(PHASE_BEFORE_REMOVEUSELESS, 3); |
| 750 | |
| 751 | // Remove clutter produced by parsing. |
| 752 | if (!failing()) { |
| 753 | ResourceMark rm; |
| 754 | PhaseRemoveUseless pru(initial_gvn(), &for_igvn); |
| 755 | } |
| 756 | } |
| 757 | |
| 758 | // Note: Large methods are capped off in do_one_bytecode(). |
| 759 | if (failing()) return; |
| 760 | |
| 761 | // After parsing, node notes are no longer automagic. |
| 762 | // They must be propagated by register_new_node_with_optimizer(), |
| 763 | // clone(), or the like. |
| 764 | set_default_node_notes(NULL__null); |
| 765 | |
| 766 | #ifndef PRODUCT |
| 767 | if (should_print(1)) { |
| 768 | _printer->print_inlining(); |
| 769 | } |
| 770 | #endif |
| 771 | |
| 772 | if (failing()) return; |
| 773 | NOT_PRODUCT( verify_graph_edges(); )verify_graph_edges(); |
| 774 | |
| 775 | // If any phase is randomized for stress testing, seed random number |
| 776 | // generation and log the seed for repeatability. |
| 777 | if (StressLCM || StressGCM || StressIGVN || StressCCP) { |
| 778 | if (FLAG_IS_DEFAULT(StressSeed)(JVMFlag::is_default(Flag_StressSeed_enum)) || (FLAG_IS_ERGO(StressSeed)(JVMFlag::is_ergo(Flag_StressSeed_enum)) && RepeatCompilation)) { |
| 779 | _stress_seed = static_cast<uint>(Ticks::now().nanoseconds()); |
| 780 | FLAG_SET_ERGO(StressSeed, _stress_seed)(Flag_StressSeed_set((_stress_seed), JVMFlagOrigin::ERGONOMIC )); |
| 781 | } else { |
| 782 | _stress_seed = StressSeed; |
| 783 | } |
| 784 | if (_log != NULL__null) { |
| 785 | _log->elem("stress_test seed='%u'", _stress_seed); |
| 786 | } |
| 787 | } |
| 788 | |
| 789 | // Now optimize |
| 790 | Optimize(); |
| 791 | if (failing()) return; |
| 792 | NOT_PRODUCT( verify_graph_edges(); )verify_graph_edges(); |
| 793 | |
| 794 | #ifndef PRODUCT |
| 795 | if (print_ideal()) { |
| 796 | ttyLocker ttyl; // keep the following output all in one block |
| 797 | // This output goes directly to the tty, not the compiler log. |
| 798 | // To enable tools to match it up with the compilation activity, |
| 799 | // be sure to tag this tty output with the compile ID. |
| 800 | if (xtty != NULL__null) { |
| 801 | xtty->head("ideal compile_id='%d'%s", compile_id(), |
| 802 | is_osr_compilation() ? " compile_kind='osr'" : |
| 803 | ""); |
| 804 | } |
| 805 | root()->dump(9999); |
| 806 | if (xtty != NULL__null) { |
| 807 | xtty->tail("ideal"); |
| 808 | } |
| 809 | } |
| 810 | #endif |
| 811 | |
| 812 | #ifdef ASSERT1 |
| 813 | BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2(); |
| 814 | bs->verify_gc_barriers(this, BarrierSetC2::BeforeCodeGen); |
| 815 | #endif |
| 816 | |
| 817 | // Dump compilation data to replay it. |
| 818 | if (directive->DumpReplayOption) { |
| 819 | env()->dump_replay_data(_compile_id); |
| 820 | } |
| 821 | if (directive->DumpInlineOption && (ilt() != NULL__null)) { |
| 822 | env()->dump_inline_data(_compile_id); |
| 823 | } |
| 824 | |
| 825 | // Now that we know the size of all the monitors we can add a fixed slot |
| 826 | // for the original deopt pc. |
| 827 | int next_slot = fixed_slots() + (sizeof(address) / VMRegImpl::stack_slot_size); |
| 828 | set_fixed_slots(next_slot); |
| 829 | |
| 830 | // Compute when to use implicit null checks. Used by matching trap based |
| 831 | // nodes and NullCheck optimization. |
| 832 | set_allowed_deopt_reasons(); |
| 833 | |
| 834 | // Now generate code |
| 835 | Code_Gen(); |
| 836 | } |
| 837 | |
| 838 | //------------------------------Compile---------------------------------------- |
| 839 | // Compile a runtime stub |
| 840 | Compile::Compile( ciEnv* ci_env, |
| 841 | TypeFunc_generator generator, |
| 842 | address stub_function, |
| 843 | const char *stub_name, |
| 844 | int is_fancy_jump, |
| 845 | bool pass_tls, |
| 846 | bool return_pc, |
| 847 | DirectiveSet* directive) |
| 848 | : Phase(Compiler), |
| 849 | _compile_id(0), |
| 850 | _options(Options::for_runtime_stub()), |
| 851 | _method(NULL__null), |
| 852 | _entry_bci(InvocationEntryBci), |
| 853 | _stub_function(stub_function), |
| 854 | _stub_name(stub_name), |
| 855 | _stub_entry_point(NULL__null), |
| 856 | _max_node_limit(MaxNodeLimit), |
| 857 | _post_loop_opts_phase(false), |
| 858 | _inlining_progress(false), |
| 859 | _inlining_incrementally(false), |
| 860 | _has_reserved_stack_access(false), |
| 861 | #ifndef PRODUCT |
| 862 | _igv_idx(0), |
| 863 | _trace_opto_output(directive->TraceOptoOutputOption), |
| 864 | _print_ideal(directive->PrintIdealOption), |
| 865 | #endif |
| 866 | _has_method_handle_invokes(false), |
| 867 | _clinit_barrier_on_entry(false), |
| 868 | _stress_seed(0), |
| 869 | _comp_arena(mtCompiler), |
| 870 | _barrier_set_state(BarrierSet::barrier_set()->barrier_set_c2()->create_barrier_state(comp_arena())), |
| 871 | _env(ci_env), |
| 872 | _directive(directive), |
| 873 | _log(ci_env->log()), |
| 874 | _failure_reason(NULL__null), |
| 875 | _congraph(NULL__null), |
| 876 | NOT_PRODUCT(_printer(NULL) COMMA)_printer(__null) , |
| 877 | _dead_node_list(comp_arena()), |
| 878 | _dead_node_count(0), |
| 879 | _node_arena(mtCompiler), |
| 880 | _old_arena(mtCompiler), |
| 881 | _mach_constant_base_node(NULL__null), |
| 882 | _Compile_types(mtCompiler), |
| 883 | _initial_gvn(NULL__null), |
| 884 | _for_igvn(NULL__null), |
| 885 | _number_of_mh_late_inlines(0), |
| 886 | _native_invokers(), |
| 887 | _print_inlining_stream(NULL__null), |
| 888 | _print_inlining_list(NULL__null), |
| 889 | _print_inlining_idx(0), |
| 890 | _print_inlining_output(NULL__null), |
| 891 | _replay_inline_data(NULL__null), |
| 892 | _java_calls(0), |
| 893 | _inner_loops(0), |
| 894 | _interpreter_frame_size(0), |
| 895 | #ifndef PRODUCT |
| 896 | _in_dump_cnt(0), |
| 897 | #endif |
| 898 | _allowed_reasons(0) { |
| 899 | C = this; |
| 900 | |
| 901 | TraceTime t1(NULL__null, &_t_totalCompilation, CITime, false); |
| 902 | TraceTime t2(NULL__null, &_t_stubCompilation, CITime, false); |
| 903 | |
| 904 | #ifndef PRODUCT |
| 905 | set_print_assembly(PrintFrameConverterAssembly); |
| 906 | set_parsed_irreducible_loop(false); |
| 907 | #else |
| 908 | set_print_assembly(false); // Must initialize. |
| 909 | #endif |
| 910 | set_has_irreducible_loop(false); // no loops |
| 911 | |
| 912 | CompileWrapper cw(this); |
| 913 | Init(/*AliasLevel=*/ 0); |
| 914 | init_tf((*generator)()); |
| 915 | |
| 916 | { |
| 917 | // The following is a dummy for the sake of GraphKit::gen_stub |
| 918 | Unique_Node_List for_igvn(comp_arena()); |
| 919 | set_for_igvn(&for_igvn); // not used, but some GraphKit guys push on this |
| 920 | PhaseGVN gvn(Thread::current()->resource_area(),255); |
| 921 | set_initial_gvn(&gvn); // not significant, but GraphKit guys use it pervasively |
| 922 | gvn.transform_no_reclaim(top()); |
| 923 | |
| 924 | GraphKit kit; |
| 925 | kit.gen_stub(stub_function, stub_name, is_fancy_jump, pass_tls, return_pc); |
| 926 | } |
| 927 | |
| 928 | NOT_PRODUCT( verify_graph_edges(); )verify_graph_edges(); |
| 929 | |
| 930 | Code_Gen(); |
| 931 | } |
| 932 | |
| 933 | //------------------------------Init------------------------------------------- |
| 934 | // Prepare for a single compilation |
| 935 | void Compile::Init(int aliaslevel) { |
| 936 | _unique = 0; |
| 937 | _regalloc = NULL__null; |
| 938 | |
| 939 | _tf = NULL__null; // filled in later |
| 940 | _top = NULL__null; // cached later |
| 941 | _matcher = NULL__null; // filled in later |
| 942 | _cfg = NULL__null; // filled in later |
| 943 | |
| 944 | IA32_ONLY( set_24_bit_selection_and_mode(true, false); ) |
| 945 | |
| 946 | _node_note_array = NULL__null; |
| 947 | _default_node_notes = NULL__null; |
| 948 | DEBUG_ONLY( _modified_nodes = NULL; )_modified_nodes = __null; // Used in Optimize() |
| 949 | |
| 950 | _immutable_memory = NULL__null; // filled in at first inquiry |
| 951 | |
| 952 | // Globally visible Nodes |
| 953 | // First set TOP to NULL to give safe behavior during creation of RootNode |
| 954 | set_cached_top_node(NULL__null); |
| 955 | set_root(new RootNode()); |
| 956 | // Now that you have a Root to point to, create the real TOP |
| 957 | set_cached_top_node( new ConNode(Type::TOP) ); |
| 958 | set_recent_alloc(NULL__null, NULL__null); |
| 959 | |
| 960 | // Create Debug Information Recorder to record scopes, oopmaps, etc. |
| 961 | env()->set_oop_recorder(new OopRecorder(env()->arena())); |
| 962 | env()->set_debug_info(new DebugInformationRecorder(env()->oop_recorder())); |
| 963 | env()->set_dependencies(new Dependencies(env())); |
| 964 | |
| 965 | _fixed_slots = 0; |
| 966 | set_has_split_ifs(false); |
| 967 | set_has_loops(false); // first approximation |
| 968 | set_has_stringbuilder(false); |
| 969 | set_has_boxed_value(false); |
| 970 | _trap_can_recompile = false; // no traps emitted yet |
| 971 | _major_progress = true; // start out assuming good things will happen |
| 972 | set_has_unsafe_access(false); |
| 973 | set_max_vector_size(0); |
| 974 | set_clear_upper_avx(false); //false as default for clear upper bits of ymm registers |
| 975 | Copy::zero_to_bytes(_trap_hist, sizeof(_trap_hist)); |
| 976 | set_decompile_count(0); |
| 977 | |
| 978 | set_do_freq_based_layout(_directive->BlockLayoutByFrequencyOption); |
| 979 | _loop_opts_cnt = LoopOptsCount; |
| 980 | set_do_inlining(Inline); |
| 981 | set_max_inline_size(MaxInlineSize); |
| 982 | set_freq_inline_size(FreqInlineSize); |
| 983 | set_do_scheduling(OptoScheduling); |
| 984 | |
| 985 | set_do_vector_loop(false); |
| 986 | |
| 987 | if (AllowVectorizeOnDemand) { |
| 988 | if (has_method() && (_directive->VectorizeOption || _directive->VectorizeDebugOption)) { |
| 989 | set_do_vector_loop(true); |
| 990 | NOT_PRODUCT(if (do_vector_loop() && Verbose) {tty->print("Compile::Init: do vectorized loops (SIMD like) for method %s\n", method()->name()->as_quoted_ascii());})if (do_vector_loop() && Verbose) {tty->print("Compile::Init: do vectorized loops (SIMD like) for method %s\n" , method()->name()->as_quoted_ascii());} |
| 991 | } else if (has_method() && method()->name() != 0 && |
| 992 | method()->intrinsic_id() == vmIntrinsics::_forEachRemaining) { |
| 993 | set_do_vector_loop(true); |
| 994 | } |
| 995 | } |
| 996 | set_use_cmove(UseCMoveUnconditionally /* || do_vector_loop()*/); //TODO: consider do_vector_loop() mandate use_cmove unconditionally |
| 997 | NOT_PRODUCT(if (use_cmove() && Verbose && has_method()) {tty->print("Compile::Init: use CMove without profitability tests for method %s\n", method()->name()->as_quoted_ascii());})if (use_cmove() && Verbose && has_method()) { tty->print("Compile::Init: use CMove without profitability tests for method %s\n" , method()->name()->as_quoted_ascii());} |
| 998 | |
| 999 | set_age_code(has_method() && method()->profile_aging()); |
| 1000 | set_rtm_state(NoRTM); // No RTM lock eliding by default |
| 1001 | _max_node_limit = _directive->MaxNodeLimitOption; |
| 1002 | |
| 1003 | #if INCLUDE_RTM_OPT1 |
| 1004 | if (UseRTMLocking && has_method() && (method()->method_data_or_null() != NULL__null)) { |
| 1005 | int rtm_state = method()->method_data()->rtm_state(); |
| 1006 | if (method_has_option(CompileCommand::NoRTMLockEliding) || ((rtm_state & NoRTM) != 0)) { |
| 1007 | // Don't generate RTM lock eliding code. |
| 1008 | set_rtm_state(NoRTM); |
| 1009 | } else if (method_has_option(CompileCommand::UseRTMLockEliding) || ((rtm_state & UseRTM) != 0) || !UseRTMDeopt) { |
| 1010 | // Generate RTM lock eliding code without abort ratio calculation code. |
| 1011 | set_rtm_state(UseRTM); |
| 1012 | } else if (UseRTMDeopt) { |
| 1013 | // Generate RTM lock eliding code and include abort ratio calculation |
| 1014 | // code if UseRTMDeopt is on. |
| 1015 | set_rtm_state(ProfileRTM); |
| 1016 | } |
| 1017 | } |
| 1018 | #endif |
| 1019 | if (VM_Version::supports_fast_class_init_checks() && has_method() && !is_osr_compilation() && method()->needs_clinit_barrier()) { |
| 1020 | set_clinit_barrier_on_entry(true); |
| 1021 | } |
| 1022 | if (debug_info()->recording_non_safepoints()) { |
| 1023 | set_node_note_array(new(comp_arena()) GrowableArray<Node_Notes*> |
| 1024 | (comp_arena(), 8, 0, NULL__null)); |
| 1025 | set_default_node_notes(Node_Notes::make(this)); |
| 1026 | } |
| 1027 | |
| 1028 | // // -- Initialize types before each compile -- |
| 1029 | // // Update cached type information |
| 1030 | // if( _method && _method->constants() ) |
| 1031 | // Type::update_loaded_types(_method, _method->constants()); |
| 1032 | |
| 1033 | // Init alias_type map. |
| 1034 | if (!do_escape_analysis() && aliaslevel == 3) { |
| 1035 | aliaslevel = 2; // No unique types without escape analysis |
| 1036 | } |
| 1037 | _AliasLevel = aliaslevel; |
| 1038 | const int grow_ats = 16; |
| 1039 | _max_alias_types = grow_ats; |
| 1040 | _alias_types = NEW_ARENA_ARRAY(comp_arena(), AliasType*, grow_ats)(AliasType**) (comp_arena())->Amalloc((grow_ats) * sizeof( AliasType*)); |
| 1041 | AliasType* ats = NEW_ARENA_ARRAY(comp_arena(), AliasType, grow_ats)(AliasType*) (comp_arena())->Amalloc((grow_ats) * sizeof(AliasType )); |
| 1042 | Copy::zero_to_bytes(ats, sizeof(AliasType)*grow_ats); |
| 1043 | { |
| 1044 | for (int i = 0; i < grow_ats; i++) _alias_types[i] = &ats[i]; |
| 1045 | } |
| 1046 | // Initialize the first few types. |
| 1047 | _alias_types[AliasIdxTop]->Init(AliasIdxTop, NULL__null); |
| 1048 | _alias_types[AliasIdxBot]->Init(AliasIdxBot, TypePtr::BOTTOM); |
| 1049 | _alias_types[AliasIdxRaw]->Init(AliasIdxRaw, TypeRawPtr::BOTTOM); |
| 1050 | _num_alias_types = AliasIdxRaw+1; |
| 1051 | // Zero out the alias type cache. |
| 1052 | Copy::zero_to_bytes(_alias_cache, sizeof(_alias_cache)); |
| 1053 | // A NULL adr_type hits in the cache right away. Preload the right answer. |
| 1054 | probe_alias_cache(NULL__null)->_index = AliasIdxTop; |
| 1055 | |
| 1056 | #ifdef ASSERT1 |
| 1057 | _type_verify_symmetry = true; |
| 1058 | _phase_optimize_finished = false; |
| 1059 | _exception_backedge = false; |
| 1060 | #endif |
| 1061 | } |
| 1062 | |
| 1063 | //---------------------------init_start---------------------------------------- |
| 1064 | // Install the StartNode on this compile object. |
| 1065 | void Compile::init_start(StartNode* s) { |
| 1066 | if (failing()) |
| 1067 | return; // already failing |
| 1068 | assert(s == start(), "")do { if (!(s == start())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1068, "assert(" "s == start()" ") failed", ""); ::breakpoint (); } } while (0); |
| 1069 | } |
| 1070 | |
| 1071 | /** |
| 1072 | * Return the 'StartNode'. We must not have a pending failure, since the ideal graph |
| 1073 | * can be in an inconsistent state, i.e., we can get segmentation faults when traversing |
| 1074 | * the ideal graph. |
| 1075 | */ |
| 1076 | StartNode* Compile::start() const { |
| 1077 | assert (!failing(), "Must not have pending failure. Reason is: %s", failure_reason())do { if (!(!failing())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1077, "assert(" "!failing()" ") failed", "Must not have pending failure. Reason is: %s" , failure_reason()); ::breakpoint(); } } while (0); |
| 1078 | for (DUIterator_Fast imax, i = root()->fast_outs(imax); i < imax; i++) { |
| 1079 | Node* start = root()->fast_out(i); |
| 1080 | if (start->is_Start()) { |
| 1081 | return start->as_Start(); |
| 1082 | } |
| 1083 | } |
| 1084 | fatal("Did not find Start node!")do { (*g_assert_poison) = 'X';; report_fatal(INTERNAL_ERROR, "/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1084, "Did not find Start node!"); ::breakpoint(); } while ( 0); |
| 1085 | return NULL__null; |
| 1086 | } |
| 1087 | |
| 1088 | //-------------------------------immutable_memory------------------------------------- |
| 1089 | // Access immutable memory |
| 1090 | Node* Compile::immutable_memory() { |
| 1091 | if (_immutable_memory != NULL__null) { |
| 1092 | return _immutable_memory; |
| 1093 | } |
| 1094 | StartNode* s = start(); |
| 1095 | for (DUIterator_Fast imax, i = s->fast_outs(imax); true; i++) { |
| 1096 | Node *p = s->fast_out(i); |
| 1097 | if (p != s && p->as_Proj()->_con == TypeFunc::Memory) { |
| 1098 | _immutable_memory = p; |
| 1099 | return _immutable_memory; |
| 1100 | } |
| 1101 | } |
| 1102 | ShouldNotReachHere()do { (*g_assert_poison) = 'X';; report_should_not_reach_here( "/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1102); ::breakpoint(); } while (0); |
| 1103 | return NULL__null; |
| 1104 | } |
| 1105 | |
| 1106 | //----------------------set_cached_top_node------------------------------------ |
| 1107 | // Install the cached top node, and make sure Node::is_top works correctly. |
| 1108 | void Compile::set_cached_top_node(Node* tn) { |
| 1109 | if (tn != NULL__null) verify_top(tn); |
| 1110 | Node* old_top = _top; |
| 1111 | _top = tn; |
| 1112 | // Calling Node::setup_is_top allows the nodes the chance to adjust |
| 1113 | // their _out arrays. |
| 1114 | if (_top != NULL__null) _top->setup_is_top(); |
| 1115 | if (old_top != NULL__null) old_top->setup_is_top(); |
| 1116 | assert(_top == NULL || top()->is_top(), "")do { if (!(_top == __null || top()->is_top())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1116, "assert(" "_top == __null || top()->is_top()" ") failed" , ""); ::breakpoint(); } } while (0); |
| 1117 | } |
| 1118 | |
| 1119 | #ifdef ASSERT1 |
| 1120 | uint Compile::count_live_nodes_by_graph_walk() { |
| 1121 | Unique_Node_List useful(comp_arena()); |
| 1122 | // Get useful node list by walking the graph. |
| 1123 | identify_useful_nodes(useful); |
| 1124 | return useful.size(); |
| 1125 | } |
| 1126 | |
| 1127 | void Compile::print_missing_nodes() { |
| 1128 | |
| 1129 | // Return if CompileLog is NULL and PrintIdealNodeCount is false. |
| 1130 | if ((_log == NULL__null) && (! PrintIdealNodeCount)) { |
| 1131 | return; |
| 1132 | } |
| 1133 | |
| 1134 | // This is an expensive function. It is executed only when the user |
| 1135 | // specifies VerifyIdealNodeCount option or otherwise knows the |
| 1136 | // additional work that needs to be done to identify reachable nodes |
| 1137 | // by walking the flow graph and find the missing ones using |
| 1138 | // _dead_node_list. |
| 1139 | |
| 1140 | Unique_Node_List useful(comp_arena()); |
| 1141 | // Get useful node list by walking the graph. |
| 1142 | identify_useful_nodes(useful); |
| 1143 | |
| 1144 | uint l_nodes = C->live_nodes(); |
| 1145 | uint l_nodes_by_walk = useful.size(); |
| 1146 | |
| 1147 | if (l_nodes != l_nodes_by_walk) { |
| 1148 | if (_log != NULL__null) { |
| 1149 | _log->begin_head("mismatched_nodes count='%d'", abs((int) (l_nodes - l_nodes_by_walk))); |
| 1150 | _log->stamp(); |
| 1151 | _log->end_head(); |
| 1152 | } |
| 1153 | VectorSet& useful_member_set = useful.member_set(); |
| 1154 | int last_idx = l_nodes_by_walk; |
| 1155 | for (int i = 0; i < last_idx; i++) { |
| 1156 | if (useful_member_set.test(i)) { |
| 1157 | if (_dead_node_list.test(i)) { |
| 1158 | if (_log != NULL__null) { |
| 1159 | _log->elem("mismatched_node_info node_idx='%d' type='both live and dead'", i); |
| 1160 | } |
| 1161 | if (PrintIdealNodeCount) { |
| 1162 | // Print the log message to tty |
| 1163 | tty->print_cr("mismatched_node idx='%d' both live and dead'", i); |
| 1164 | useful.at(i)->dump(); |
| 1165 | } |
| 1166 | } |
| 1167 | } |
| 1168 | else if (! _dead_node_list.test(i)) { |
| 1169 | if (_log != NULL__null) { |
| 1170 | _log->elem("mismatched_node_info node_idx='%d' type='neither live nor dead'", i); |
| 1171 | } |
| 1172 | if (PrintIdealNodeCount) { |
| 1173 | // Print the log message to tty |
| 1174 | tty->print_cr("mismatched_node idx='%d' type='neither live nor dead'", i); |
| 1175 | } |
| 1176 | } |
| 1177 | } |
| 1178 | if (_log != NULL__null) { |
| 1179 | _log->tail("mismatched_nodes"); |
| 1180 | } |
| 1181 | } |
| 1182 | } |
| 1183 | void Compile::record_modified_node(Node* n) { |
| 1184 | if (_modified_nodes != NULL__null && !_inlining_incrementally && !n->is_Con()) { |
| 1185 | _modified_nodes->push(n); |
| 1186 | } |
| 1187 | } |
| 1188 | |
| 1189 | void Compile::remove_modified_node(Node* n) { |
| 1190 | if (_modified_nodes != NULL__null) { |
| 1191 | _modified_nodes->remove(n); |
| 1192 | } |
| 1193 | } |
| 1194 | #endif |
| 1195 | |
| 1196 | #ifndef PRODUCT |
| 1197 | void Compile::verify_top(Node* tn) const { |
| 1198 | if (tn != NULL__null) { |
| 1199 | assert(tn->is_Con(), "top node must be a constant")do { if (!(tn->is_Con())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1199, "assert(" "tn->is_Con()" ") failed", "top node must be a constant" ); ::breakpoint(); } } while (0); |
| 1200 | assert(((ConNode*)tn)->type() == Type::TOP, "top node must have correct type")do { if (!(((ConNode*)tn)->type() == Type::TOP)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1200, "assert(" "((ConNode*)tn)->type() == Type::TOP" ") failed" , "top node must have correct type"); ::breakpoint(); } } while (0); |
| 1201 | assert(tn->in(0) != NULL, "must have live top node")do { if (!(tn->in(0) != __null)) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1201, "assert(" "tn->in(0) != __null" ") failed", "must have live top node" ); ::breakpoint(); } } while (0); |
| 1202 | } |
| 1203 | } |
| 1204 | #endif |
| 1205 | |
| 1206 | |
| 1207 | ///-------------------Managing Per-Node Debug & Profile Info------------------- |
| 1208 | |
| 1209 | void Compile::grow_node_notes(GrowableArray<Node_Notes*>* arr, int grow_by) { |
| 1210 | guarantee(arr != NULL, "")do { if (!(arr != __null)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1210, "guarantee(" "arr != NULL" ") failed", ""); ::breakpoint (); } } while (0); |
| 1211 | int num_blocks = arr->length(); |
| 1212 | if (grow_by < num_blocks) grow_by = num_blocks; |
| 1213 | int num_notes = grow_by * _node_notes_block_size; |
| 1214 | Node_Notes* notes = NEW_ARENA_ARRAY(node_arena(), Node_Notes, num_notes)(Node_Notes*) (node_arena())->Amalloc((num_notes) * sizeof (Node_Notes)); |
| 1215 | Copy::zero_to_bytes(notes, num_notes * sizeof(Node_Notes)); |
| 1216 | while (num_notes > 0) { |
| 1217 | arr->append(notes); |
| 1218 | notes += _node_notes_block_size; |
| 1219 | num_notes -= _node_notes_block_size; |
| 1220 | } |
| 1221 | assert(num_notes == 0, "exact multiple, please")do { if (!(num_notes == 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1221, "assert(" "num_notes == 0" ") failed", "exact multiple, please" ); ::breakpoint(); } } while (0); |
| 1222 | } |
| 1223 | |
| 1224 | bool Compile::copy_node_notes_to(Node* dest, Node* source) { |
| 1225 | if (source == NULL__null || dest == NULL__null) return false; |
| 1226 | |
| 1227 | if (dest->is_Con()) |
| 1228 | return false; // Do not push debug info onto constants. |
| 1229 | |
| 1230 | #ifdef ASSERT1 |
| 1231 | // Leave a bread crumb trail pointing to the original node: |
| 1232 | if (dest != NULL__null && dest != source && dest->debug_orig() == NULL__null) { |
| 1233 | dest->set_debug_orig(source); |
| 1234 | } |
| 1235 | #endif |
| 1236 | |
| 1237 | if (node_note_array() == NULL__null) |
| 1238 | return false; // Not collecting any notes now. |
| 1239 | |
| 1240 | // This is a copy onto a pre-existing node, which may already have notes. |
| 1241 | // If both nodes have notes, do not overwrite any pre-existing notes. |
| 1242 | Node_Notes* source_notes = node_notes_at(source->_idx); |
| 1243 | if (source_notes == NULL__null || source_notes->is_clear()) return false; |
| 1244 | Node_Notes* dest_notes = node_notes_at(dest->_idx); |
| 1245 | if (dest_notes == NULL__null || dest_notes->is_clear()) { |
| 1246 | return set_node_notes_at(dest->_idx, source_notes); |
| 1247 | } |
| 1248 | |
| 1249 | Node_Notes merged_notes = (*source_notes); |
| 1250 | // The order of operations here ensures that dest notes will win... |
| 1251 | merged_notes.update_from(dest_notes); |
| 1252 | return set_node_notes_at(dest->_idx, &merged_notes); |
| 1253 | } |
| 1254 | |
| 1255 | |
| 1256 | //--------------------------allow_range_check_smearing------------------------- |
| 1257 | // Gating condition for coalescing similar range checks. |
| 1258 | // Sometimes we try 'speculatively' replacing a series of a range checks by a |
| 1259 | // single covering check that is at least as strong as any of them. |
| 1260 | // If the optimization succeeds, the simplified (strengthened) range check |
| 1261 | // will always succeed. If it fails, we will deopt, and then give up |
| 1262 | // on the optimization. |
| 1263 | bool Compile::allow_range_check_smearing() const { |
| 1264 | // If this method has already thrown a range-check, |
| 1265 | // assume it was because we already tried range smearing |
| 1266 | // and it failed. |
| 1267 | uint already_trapped = trap_count(Deoptimization::Reason_range_check); |
| 1268 | return !already_trapped; |
| 1269 | } |
| 1270 | |
| 1271 | |
| 1272 | //------------------------------flatten_alias_type----------------------------- |
| 1273 | const TypePtr *Compile::flatten_alias_type( const TypePtr *tj ) const { |
| 1274 | int offset = tj->offset(); |
| 1275 | TypePtr::PTR ptr = tj->ptr(); |
| 1276 | |
| 1277 | // Known instance (scalarizable allocation) alias only with itself. |
| 1278 | bool is_known_inst = tj->isa_oopptr() != NULL__null && |
| 1279 | tj->is_oopptr()->is_known_instance(); |
| 1280 | |
| 1281 | // Process weird unsafe references. |
| 1282 | if (offset == Type::OffsetBot && (tj->isa_instptr() /*|| tj->isa_klassptr()*/)) { |
| 1283 | assert(InlineUnsafeOps, "indeterminate pointers come only from unsafe ops")do { if (!(InlineUnsafeOps)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1283, "assert(" "InlineUnsafeOps" ") failed", "indeterminate pointers come only from unsafe ops" ); ::breakpoint(); } } while (0); |
| 1284 | assert(!is_known_inst, "scalarizable allocation should not have unsafe references")do { if (!(!is_known_inst)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1284, "assert(" "!is_known_inst" ") failed", "scalarizable allocation should not have unsafe references" ); ::breakpoint(); } } while (0); |
| 1285 | tj = TypeOopPtr::BOTTOM; |
| 1286 | ptr = tj->ptr(); |
| 1287 | offset = tj->offset(); |
| 1288 | } |
| 1289 | |
| 1290 | // Array pointers need some flattening |
| 1291 | const TypeAryPtr *ta = tj->isa_aryptr(); |
| 1292 | if (ta && ta->is_stable()) { |
| 1293 | // Erase stability property for alias analysis. |
| 1294 | tj = ta = ta->cast_to_stable(false); |
| 1295 | } |
| 1296 | if( ta && is_known_inst ) { |
| 1297 | if ( offset != Type::OffsetBot && |
| 1298 | offset > arrayOopDesc::length_offset_in_bytes() ) { |
| 1299 | offset = Type::OffsetBot; // Flatten constant access into array body only |
| 1300 | tj = ta = TypeAryPtr::make(ptr, ta->ary(), ta->klass(), true, offset, ta->instance_id()); |
| 1301 | } |
| 1302 | } else if( ta && _AliasLevel >= 2 ) { |
| 1303 | // For arrays indexed by constant indices, we flatten the alias |
| 1304 | // space to include all of the array body. Only the header, klass |
| 1305 | // and array length can be accessed un-aliased. |
| 1306 | if( offset != Type::OffsetBot ) { |
| 1307 | if( ta->const_oop() ) { // MethodData* or Method* |
| 1308 | offset = Type::OffsetBot; // Flatten constant access into array body |
| 1309 | tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),ta->ary(),ta->klass(),false,offset); |
| 1310 | } else if( offset == arrayOopDesc::length_offset_in_bytes() ) { |
| 1311 | // range is OK as-is. |
| 1312 | tj = ta = TypeAryPtr::RANGE; |
| 1313 | } else if( offset == oopDesc::klass_offset_in_bytes() ) { |
| 1314 | tj = TypeInstPtr::KLASS; // all klass loads look alike |
| 1315 | ta = TypeAryPtr::RANGE; // generic ignored junk |
| 1316 | ptr = TypePtr::BotPTR; |
| 1317 | } else if( offset == oopDesc::mark_offset_in_bytes() ) { |
| 1318 | tj = TypeInstPtr::MARK; |
| 1319 | ta = TypeAryPtr::RANGE; // generic ignored junk |
| 1320 | ptr = TypePtr::BotPTR; |
| 1321 | } else { // Random constant offset into array body |
| 1322 | offset = Type::OffsetBot; // Flatten constant access into array body |
| 1323 | tj = ta = TypeAryPtr::make(ptr,ta->ary(),ta->klass(),false,offset); |
| 1324 | } |
| 1325 | } |
| 1326 | // Arrays of fixed size alias with arrays of unknown size. |
| 1327 | if (ta->size() != TypeInt::POS) { |
| 1328 | const TypeAry *tary = TypeAry::make(ta->elem(), TypeInt::POS); |
| 1329 | tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),tary,ta->klass(),false,offset); |
| 1330 | } |
| 1331 | // Arrays of known objects become arrays of unknown objects. |
| 1332 | if (ta->elem()->isa_narrowoop() && ta->elem() != TypeNarrowOop::BOTTOM) { |
| 1333 | const TypeAry *tary = TypeAry::make(TypeNarrowOop::BOTTOM, ta->size()); |
| 1334 | tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),tary,NULL__null,false,offset); |
| 1335 | } |
| 1336 | if (ta->elem()->isa_oopptr() && ta->elem() != TypeInstPtr::BOTTOM) { |
| 1337 | const TypeAry *tary = TypeAry::make(TypeInstPtr::BOTTOM, ta->size()); |
| 1338 | tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),tary,NULL__null,false,offset); |
| 1339 | } |
| 1340 | // Arrays of bytes and of booleans both use 'bastore' and 'baload' so |
| 1341 | // cannot be distinguished by bytecode alone. |
| 1342 | if (ta->elem() == TypeInt::BOOL) { |
| 1343 | const TypeAry *tary = TypeAry::make(TypeInt::BYTE, ta->size()); |
| 1344 | ciKlass* aklass = ciTypeArrayKlass::make(T_BYTE); |
| 1345 | tj = ta = TypeAryPtr::make(ptr,ta->const_oop(),tary,aklass,false,offset); |
| 1346 | } |
| 1347 | // During the 2nd round of IterGVN, NotNull castings are removed. |
| 1348 | // Make sure the Bottom and NotNull variants alias the same. |
| 1349 | // Also, make sure exact and non-exact variants alias the same. |
| 1350 | if (ptr == TypePtr::NotNull || ta->klass_is_exact() || ta->speculative() != NULL__null) { |
| 1351 | tj = ta = TypeAryPtr::make(TypePtr::BotPTR,ta->ary(),ta->klass(),false,offset); |
| 1352 | } |
| 1353 | } |
| 1354 | |
| 1355 | // Oop pointers need some flattening |
| 1356 | const TypeInstPtr *to = tj->isa_instptr(); |
| 1357 | if( to && _AliasLevel >= 2 && to != TypeOopPtr::BOTTOM ) { |
| 1358 | ciInstanceKlass *k = to->klass()->as_instance_klass(); |
| 1359 | if( ptr == TypePtr::Constant ) { |
| 1360 | if (to->klass() != ciEnv::current()->Class_klass() || |
| 1361 | offset < k->layout_helper_size_in_bytes()) { |
| 1362 | // No constant oop pointers (such as Strings); they alias with |
| 1363 | // unknown strings. |
| 1364 | assert(!is_known_inst, "not scalarizable allocation")do { if (!(!is_known_inst)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1364, "assert(" "!is_known_inst" ") failed", "not scalarizable allocation" ); ::breakpoint(); } } while (0); |
| 1365 | tj = to = TypeInstPtr::make(TypePtr::BotPTR,to->klass(),false,0,offset); |
| 1366 | } |
| 1367 | } else if( is_known_inst ) { |
| 1368 | tj = to; // Keep NotNull and klass_is_exact for instance type |
| 1369 | } else if( ptr == TypePtr::NotNull || to->klass_is_exact() ) { |
| 1370 | // During the 2nd round of IterGVN, NotNull castings are removed. |
| 1371 | // Make sure the Bottom and NotNull variants alias the same. |
| 1372 | // Also, make sure exact and non-exact variants alias the same. |
| 1373 | tj = to = TypeInstPtr::make(TypePtr::BotPTR,to->klass(),false,0,offset); |
| 1374 | } |
| 1375 | if (to->speculative() != NULL__null) { |
| 1376 | tj = to = TypeInstPtr::make(to->ptr(),to->klass(),to->klass_is_exact(),to->const_oop(),to->offset(), to->instance_id()); |
| 1377 | } |
| 1378 | // Canonicalize the holder of this field |
| 1379 | if (offset >= 0 && offset < instanceOopDesc::base_offset_in_bytes()) { |
| 1380 | // First handle header references such as a LoadKlassNode, even if the |
| 1381 | // object's klass is unloaded at compile time (4965979). |
| 1382 | if (!is_known_inst) { // Do it only for non-instance types |
| 1383 | tj = to = TypeInstPtr::make(TypePtr::BotPTR, env()->Object_klass(), false, NULL__null, offset); |
Although the value stored to 'to' is used in the enclosing expression, the value is never actually read from 'to' | |
| 1384 | } |
| 1385 | } else if (offset < 0 || offset >= k->layout_helper_size_in_bytes()) { |
| 1386 | // Static fields are in the space above the normal instance |
| 1387 | // fields in the java.lang.Class instance. |
| 1388 | if (to->klass() != ciEnv::current()->Class_klass()) { |
| 1389 | to = NULL__null; |
| 1390 | tj = TypeOopPtr::BOTTOM; |
| 1391 | offset = tj->offset(); |
| 1392 | } |
| 1393 | } else { |
| 1394 | ciInstanceKlass *canonical_holder = k->get_canonical_holder(offset); |
| 1395 | assert(offset < canonical_holder->layout_helper_size_in_bytes(), "")do { if (!(offset < canonical_holder->layout_helper_size_in_bytes ())) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1395, "assert(" "offset < canonical_holder->layout_helper_size_in_bytes()" ") failed", ""); ::breakpoint(); } } while (0); |
| 1396 | if (!k->equals(canonical_holder) || tj->offset() != offset) { |
| 1397 | if( is_known_inst ) { |
| 1398 | tj = to = TypeInstPtr::make(to->ptr(), canonical_holder, true, NULL__null, offset, to->instance_id()); |
| 1399 | } else { |
| 1400 | tj = to = TypeInstPtr::make(to->ptr(), canonical_holder, false, NULL__null, offset); |
| 1401 | } |
| 1402 | } |
| 1403 | } |
| 1404 | } |
| 1405 | |
| 1406 | // Klass pointers to object array klasses need some flattening |
| 1407 | const TypeKlassPtr *tk = tj->isa_klassptr(); |
| 1408 | if( tk ) { |
| 1409 | // If we are referencing a field within a Klass, we need |
| 1410 | // to assume the worst case of an Object. Both exact and |
| 1411 | // inexact types must flatten to the same alias class so |
| 1412 | // use NotNull as the PTR. |
| 1413 | if ( offset == Type::OffsetBot || (offset >= 0 && (size_t)offset < sizeof(Klass)) ) { |
| 1414 | |
| 1415 | tj = tk = TypeKlassPtr::make(TypePtr::NotNull, |
| 1416 | TypeInstKlassPtr::OBJECT->klass(), |
| 1417 | offset); |
| 1418 | } |
| 1419 | |
| 1420 | ciKlass* klass = tk->klass(); |
| 1421 | if( klass->is_obj_array_klass() ) { |
| 1422 | ciKlass* k = TypeAryPtr::OOPS->klass(); |
| 1423 | if( !k || !k->is_loaded() ) // Only fails for some -Xcomp runs |
| 1424 | k = TypeInstPtr::BOTTOM->klass(); |
| 1425 | tj = tk = TypeKlassPtr::make( TypePtr::NotNull, k, offset ); |
| 1426 | } |
| 1427 | |
| 1428 | // Check for precise loads from the primary supertype array and force them |
| 1429 | // to the supertype cache alias index. Check for generic array loads from |
| 1430 | // the primary supertype array and also force them to the supertype cache |
| 1431 | // alias index. Since the same load can reach both, we need to merge |
| 1432 | // these 2 disparate memories into the same alias class. Since the |
| 1433 | // primary supertype array is read-only, there's no chance of confusion |
| 1434 | // where we bypass an array load and an array store. |
| 1435 | int primary_supers_offset = in_bytes(Klass::primary_supers_offset()); |
| 1436 | if (offset == Type::OffsetBot || |
| 1437 | (offset >= primary_supers_offset && |
| 1438 | offset < (int)(primary_supers_offset + Klass::primary_super_limit() * wordSize)) || |
| 1439 | offset == (int)in_bytes(Klass::secondary_super_cache_offset())) { |
| 1440 | offset = in_bytes(Klass::secondary_super_cache_offset()); |
| 1441 | tj = tk = TypeKlassPtr::make( TypePtr::NotNull, tk->klass(), offset ); |
| 1442 | } |
| 1443 | } |
| 1444 | |
| 1445 | // Flatten all Raw pointers together. |
| 1446 | if (tj->base() == Type::RawPtr) |
| 1447 | tj = TypeRawPtr::BOTTOM; |
| 1448 | |
| 1449 | if (tj->base() == Type::AnyPtr) |
| 1450 | tj = TypePtr::BOTTOM; // An error, which the caller must check for. |
| 1451 | |
| 1452 | // Flatten all to bottom for now |
| 1453 | switch( _AliasLevel ) { |
| 1454 | case 0: |
| 1455 | tj = TypePtr::BOTTOM; |
| 1456 | break; |
| 1457 | case 1: // Flatten to: oop, static, field or array |
| 1458 | switch (tj->base()) { |
| 1459 | //case Type::AryPtr: tj = TypeAryPtr::RANGE; break; |
| 1460 | case Type::RawPtr: tj = TypeRawPtr::BOTTOM; break; |
| 1461 | case Type::AryPtr: // do not distinguish arrays at all |
| 1462 | case Type::InstPtr: tj = TypeInstPtr::BOTTOM; break; |
| 1463 | case Type::KlassPtr: |
| 1464 | case Type::AryKlassPtr: |
| 1465 | case Type::InstKlassPtr: tj = TypeInstKlassPtr::OBJECT; break; |
| 1466 | case Type::AnyPtr: tj = TypePtr::BOTTOM; break; // caller checks it |
| 1467 | default: ShouldNotReachHere()do { (*g_assert_poison) = 'X';; report_should_not_reach_here( "/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1467); ::breakpoint(); } while (0); |
| 1468 | } |
| 1469 | break; |
| 1470 | case 2: // No collapsing at level 2; keep all splits |
| 1471 | case 3: // No collapsing at level 3; keep all splits |
| 1472 | break; |
| 1473 | default: |
| 1474 | Unimplemented()do { (*g_assert_poison) = 'X';; report_unimplemented("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1474); ::breakpoint(); } while (0); |
| 1475 | } |
| 1476 | |
| 1477 | offset = tj->offset(); |
| 1478 | assert( offset != Type::OffsetTop, "Offset has fallen from constant" )do { if (!(offset != Type::OffsetTop)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1478, "assert(" "offset != Type::OffsetTop" ") failed", "Offset has fallen from constant" ); ::breakpoint(); } } while (0); |
| 1479 | |
| 1480 | assert( (offset != Type::OffsetBot && tj->base() != Type::AryPtr) ||do { if (!((offset != Type::OffsetBot && tj->base( ) != Type::AryPtr) || (offset == Type::OffsetBot && tj ->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes () && tj->base() == Type::AryPtr) || (offset == oopDesc ::klass_offset_in_bytes() && tj->base() == Type::AryPtr ) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr))) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1487, "assert(" "(offset != Type::OffsetBot && tj->base() != Type::AryPtr) || (offset == Type::OffsetBot && tj->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == oopDesc::klass_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr)" ") failed", "For oops, klasses, raw offset must be constant; for arrays the offset is never known" ); ::breakpoint(); } } while (0) |
| 1481 | (offset == Type::OffsetBot && tj->base() == Type::AryPtr) ||do { if (!((offset != Type::OffsetBot && tj->base( ) != Type::AryPtr) || (offset == Type::OffsetBot && tj ->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes () && tj->base() == Type::AryPtr) || (offset == oopDesc ::klass_offset_in_bytes() && tj->base() == Type::AryPtr ) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr))) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1487, "assert(" "(offset != Type::OffsetBot && tj->base() != Type::AryPtr) || (offset == Type::OffsetBot && tj->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == oopDesc::klass_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr)" ") failed", "For oops, klasses, raw offset must be constant; for arrays the offset is never known" ); ::breakpoint(); } } while (0) |
| 1482 | (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) ||do { if (!((offset != Type::OffsetBot && tj->base( ) != Type::AryPtr) || (offset == Type::OffsetBot && tj ->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes () && tj->base() == Type::AryPtr) || (offset == oopDesc ::klass_offset_in_bytes() && tj->base() == Type::AryPtr ) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr))) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1487, "assert(" "(offset != Type::OffsetBot && tj->base() != Type::AryPtr) || (offset == Type::OffsetBot && tj->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == oopDesc::klass_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr)" ") failed", "For oops, klasses, raw offset must be constant; for arrays the offset is never known" ); ::breakpoint(); } } while (0) |
| 1483 | (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) ||do { if (!((offset != Type::OffsetBot && tj->base( ) != Type::AryPtr) || (offset == Type::OffsetBot && tj ->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes () && tj->base() == Type::AryPtr) || (offset == oopDesc ::klass_offset_in_bytes() && tj->base() == Type::AryPtr ) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr))) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1487, "assert(" "(offset != Type::OffsetBot && tj->base() != Type::AryPtr) || (offset == Type::OffsetBot && tj->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == oopDesc::klass_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr)" ") failed", "For oops, klasses, raw offset must be constant; for arrays the offset is never known" ); ::breakpoint(); } } while (0) |
| 1484 | (offset == oopDesc::mark_offset_in_bytes() && tj->base() == Type::AryPtr) ||do { if (!((offset != Type::OffsetBot && tj->base( ) != Type::AryPtr) || (offset == Type::OffsetBot && tj ->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes () && tj->base() == Type::AryPtr) || (offset == oopDesc ::klass_offset_in_bytes() && tj->base() == Type::AryPtr ) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr))) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1487, "assert(" "(offset != Type::OffsetBot && tj->base() != Type::AryPtr) || (offset == Type::OffsetBot && tj->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == oopDesc::klass_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr)" ") failed", "For oops, klasses, raw offset must be constant; for arrays the offset is never known" ); ::breakpoint(); } } while (0) |
| 1485 | (offset == oopDesc::klass_offset_in_bytes() && tj->base() == Type::AryPtr) ||do { if (!((offset != Type::OffsetBot && tj->base( ) != Type::AryPtr) || (offset == Type::OffsetBot && tj ->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes () && tj->base() == Type::AryPtr) || (offset == oopDesc ::klass_offset_in_bytes() && tj->base() == Type::AryPtr ) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr))) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1487, "assert(" "(offset != Type::OffsetBot && tj->base() != Type::AryPtr) || (offset == Type::OffsetBot && tj->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == oopDesc::klass_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr)" ") failed", "For oops, klasses, raw offset must be constant; for arrays the offset is never known" ); ::breakpoint(); } } while (0) |
| 1486 | (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr),do { if (!((offset != Type::OffsetBot && tj->base( ) != Type::AryPtr) || (offset == Type::OffsetBot && tj ->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes () && tj->base() == Type::AryPtr) || (offset == oopDesc ::klass_offset_in_bytes() && tj->base() == Type::AryPtr ) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr))) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1487, "assert(" "(offset != Type::OffsetBot && tj->base() != Type::AryPtr) || (offset == Type::OffsetBot && tj->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == oopDesc::klass_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr)" ") failed", "For oops, klasses, raw offset must be constant; for arrays the offset is never known" ); ::breakpoint(); } } while (0) |
| 1487 | "For oops, klasses, raw offset must be constant; for arrays the offset is never known" )do { if (!((offset != Type::OffsetBot && tj->base( ) != Type::AryPtr) || (offset == Type::OffsetBot && tj ->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes () && tj->base() == Type::AryPtr) || (offset == oopDesc ::klass_offset_in_bytes() && tj->base() == Type::AryPtr ) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr))) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1487, "assert(" "(offset != Type::OffsetBot && tj->base() != Type::AryPtr) || (offset == Type::OffsetBot && tj->base() == Type::AryPtr) || (offset == Type::OffsetBot && tj == TypeOopPtr::BOTTOM) || (offset == Type::OffsetBot && tj == TypePtr::BOTTOM) || (offset == oopDesc::mark_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == oopDesc::klass_offset_in_bytes() && tj->base() == Type::AryPtr) || (offset == arrayOopDesc::length_offset_in_bytes() && tj->base() == Type::AryPtr)" ") failed", "For oops, klasses, raw offset must be constant; for arrays the offset is never known" ); ::breakpoint(); } } while (0); |
| 1488 | assert( tj->ptr() != TypePtr::TopPTR &&do { if (!(tj->ptr() != TypePtr::TopPTR && tj-> ptr() != TypePtr::AnyNull && tj->ptr() != TypePtr:: Null)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1490, "assert(" "tj->ptr() != TypePtr::TopPTR && tj->ptr() != TypePtr::AnyNull && tj->ptr() != TypePtr::Null" ") failed", "No imprecise addresses"); ::breakpoint(); } } while (0) |
| 1489 | tj->ptr() != TypePtr::AnyNull &&do { if (!(tj->ptr() != TypePtr::TopPTR && tj-> ptr() != TypePtr::AnyNull && tj->ptr() != TypePtr:: Null)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1490, "assert(" "tj->ptr() != TypePtr::TopPTR && tj->ptr() != TypePtr::AnyNull && tj->ptr() != TypePtr::Null" ") failed", "No imprecise addresses"); ::breakpoint(); } } while (0) |
| 1490 | tj->ptr() != TypePtr::Null, "No imprecise addresses" )do { if (!(tj->ptr() != TypePtr::TopPTR && tj-> ptr() != TypePtr::AnyNull && tj->ptr() != TypePtr:: Null)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1490, "assert(" "tj->ptr() != TypePtr::TopPTR && tj->ptr() != TypePtr::AnyNull && tj->ptr() != TypePtr::Null" ") failed", "No imprecise addresses"); ::breakpoint(); } } while (0); |
| 1491 | // assert( tj->ptr() != TypePtr::Constant || |
| 1492 | // tj->base() == Type::RawPtr || |
| 1493 | // tj->base() == Type::KlassPtr, "No constant oop addresses" ); |
| 1494 | |
| 1495 | return tj; |
| 1496 | } |
| 1497 | |
| 1498 | void Compile::AliasType::Init(int i, const TypePtr* at) { |
| 1499 | assert(AliasIdxTop <= i && i < Compile::current()->_max_alias_types, "Invalid alias index")do { if (!(AliasIdxTop <= i && i < Compile::current ()->_max_alias_types)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1499, "assert(" "AliasIdxTop <= i && i < Compile::current()->_max_alias_types" ") failed", "Invalid alias index"); ::breakpoint(); } } while (0); |
| 1500 | _index = i; |
| 1501 | _adr_type = at; |
| 1502 | _field = NULL__null; |
| 1503 | _element = NULL__null; |
| 1504 | _is_rewritable = true; // default |
| 1505 | const TypeOopPtr *atoop = (at != NULL__null) ? at->isa_oopptr() : NULL__null; |
| 1506 | if (atoop != NULL__null && atoop->is_known_instance()) { |
| 1507 | const TypeOopPtr *gt = atoop->cast_to_instance_id(TypeOopPtr::InstanceBot); |
| 1508 | _general_index = Compile::current()->get_alias_index(gt); |
| 1509 | } else { |
| 1510 | _general_index = 0; |
| 1511 | } |
| 1512 | } |
| 1513 | |
| 1514 | BasicType Compile::AliasType::basic_type() const { |
| 1515 | if (element() != NULL__null) { |
| 1516 | const Type* element = adr_type()->is_aryptr()->elem(); |
| 1517 | return element->isa_narrowoop() ? T_OBJECT : element->array_element_basic_type(); |
| 1518 | } if (field() != NULL__null) { |
| 1519 | return field()->layout_type(); |
| 1520 | } else { |
| 1521 | return T_ILLEGAL; // unknown |
| 1522 | } |
| 1523 | } |
| 1524 | |
| 1525 | //---------------------------------print_on------------------------------------ |
| 1526 | #ifndef PRODUCT |
| 1527 | void Compile::AliasType::print_on(outputStream* st) { |
| 1528 | if (index() < 10) |
| 1529 | st->print("@ <%d> ", index()); |
| 1530 | else st->print("@ <%d>", index()); |
| 1531 | st->print(is_rewritable() ? " " : " RO"); |
| 1532 | int offset = adr_type()->offset(); |
| 1533 | if (offset == Type::OffsetBot) |
| 1534 | st->print(" +any"); |
| 1535 | else st->print(" +%-3d", offset); |
| 1536 | st->print(" in "); |
| 1537 | adr_type()->dump_on(st); |
| 1538 | const TypeOopPtr* tjp = adr_type()->isa_oopptr(); |
| 1539 | if (field() != NULL__null && tjp) { |
| 1540 | if (tjp->klass() != field()->holder() || |
| 1541 | tjp->offset() != field()->offset_in_bytes()) { |
| 1542 | st->print(" != "); |
| 1543 | field()->print(); |
| 1544 | st->print(" ***"); |
| 1545 | } |
| 1546 | } |
| 1547 | } |
| 1548 | |
| 1549 | void print_alias_types() { |
| 1550 | Compile* C = Compile::current(); |
| 1551 | tty->print_cr("--- Alias types, AliasIdxBot .. %d", C->num_alias_types()-1); |
| 1552 | for (int idx = Compile::AliasIdxBot; idx < C->num_alias_types(); idx++) { |
| 1553 | C->alias_type(idx)->print_on(tty); |
| 1554 | tty->cr(); |
| 1555 | } |
| 1556 | } |
| 1557 | #endif |
| 1558 | |
| 1559 | |
| 1560 | //----------------------------probe_alias_cache-------------------------------- |
| 1561 | Compile::AliasCacheEntry* Compile::probe_alias_cache(const TypePtr* adr_type) { |
| 1562 | intptr_t key = (intptr_t) adr_type; |
| 1563 | key ^= key >> logAliasCacheSize; |
| 1564 | return &_alias_cache[key & right_n_bits(logAliasCacheSize)((((logAliasCacheSize) >= BitsPerWord) ? 0 : (OneBit << (logAliasCacheSize))) - 1)]; |
| 1565 | } |
| 1566 | |
| 1567 | |
| 1568 | //-----------------------------grow_alias_types-------------------------------- |
| 1569 | void Compile::grow_alias_types() { |
| 1570 | const int old_ats = _max_alias_types; // how many before? |
| 1571 | const int new_ats = old_ats; // how many more? |
| 1572 | const int grow_ats = old_ats+new_ats; // how many now? |
| 1573 | _max_alias_types = grow_ats; |
| 1574 | _alias_types = REALLOC_ARENA_ARRAY(comp_arena(), AliasType*, _alias_types, old_ats, grow_ats)(AliasType**) (comp_arena())->Arealloc((char*)(_alias_types ), (old_ats) * sizeof(AliasType*), (grow_ats) * sizeof(AliasType *) ); |
| 1575 | AliasType* ats = NEW_ARENA_ARRAY(comp_arena(), AliasType, new_ats)(AliasType*) (comp_arena())->Amalloc((new_ats) * sizeof(AliasType )); |
| 1576 | Copy::zero_to_bytes(ats, sizeof(AliasType)*new_ats); |
| 1577 | for (int i = 0; i < new_ats; i++) _alias_types[old_ats+i] = &ats[i]; |
| 1578 | } |
| 1579 | |
| 1580 | |
| 1581 | //--------------------------------find_alias_type------------------------------ |
| 1582 | Compile::AliasType* Compile::find_alias_type(const TypePtr* adr_type, bool no_create, ciField* original_field) { |
| 1583 | if (_AliasLevel == 0) |
| 1584 | return alias_type(AliasIdxBot); |
| 1585 | |
| 1586 | AliasCacheEntry* ace = probe_alias_cache(adr_type); |
| 1587 | if (ace->_adr_type == adr_type) { |
| 1588 | return alias_type(ace->_index); |
| 1589 | } |
| 1590 | |
| 1591 | // Handle special cases. |
| 1592 | if (adr_type == NULL__null) return alias_type(AliasIdxTop); |
| 1593 | if (adr_type == TypePtr::BOTTOM) return alias_type(AliasIdxBot); |
| 1594 | |
| 1595 | // Do it the slow way. |
| 1596 | const TypePtr* flat = flatten_alias_type(adr_type); |
| 1597 | |
| 1598 | #ifdef ASSERT1 |
| 1599 | { |
| 1600 | ResourceMark rm; |
| 1601 | assert(flat == flatten_alias_type(flat), "not idempotent: adr_type = %s; flat = %s => %s",do { if (!(flat == flatten_alias_type(flat))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1602, "assert(" "flat == flatten_alias_type(flat)" ") failed" , "not idempotent: adr_type = %s; flat = %s => %s", Type:: str(adr_type), Type::str(flat), Type::str(flatten_alias_type( flat))); ::breakpoint(); } } while (0) |
| 1602 | Type::str(adr_type), Type::str(flat), Type::str(flatten_alias_type(flat)))do { if (!(flat == flatten_alias_type(flat))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1602, "assert(" "flat == flatten_alias_type(flat)" ") failed" , "not idempotent: adr_type = %s; flat = %s => %s", Type:: str(adr_type), Type::str(flat), Type::str(flatten_alias_type( flat))); ::breakpoint(); } } while (0); |
| 1603 | assert(flat != TypePtr::BOTTOM, "cannot alias-analyze an untyped ptr: adr_type = %s",do { if (!(flat != TypePtr::BOTTOM)) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1604, "assert(" "flat != TypePtr::BOTTOM" ") failed", "cannot alias-analyze an untyped ptr: adr_type = %s" , Type::str(adr_type)); ::breakpoint(); } } while (0) |
| 1604 | Type::str(adr_type))do { if (!(flat != TypePtr::BOTTOM)) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1604, "assert(" "flat != TypePtr::BOTTOM" ") failed", "cannot alias-analyze an untyped ptr: adr_type = %s" , Type::str(adr_type)); ::breakpoint(); } } while (0); |
| 1605 | if (flat->isa_oopptr() && !flat->isa_klassptr()) { |
| 1606 | const TypeOopPtr* foop = flat->is_oopptr(); |
| 1607 | // Scalarizable allocations have exact klass always. |
| 1608 | bool exact = !foop->klass_is_exact() || foop->is_known_instance(); |
| 1609 | const TypePtr* xoop = foop->cast_to_exactness(exact)->is_ptr(); |
| 1610 | assert(foop == flatten_alias_type(xoop), "exactness must not affect alias type: foop = %s; xoop = %s",do { if (!(foop == flatten_alias_type(xoop))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1611, "assert(" "foop == flatten_alias_type(xoop)" ") failed" , "exactness must not affect alias type: foop = %s; xoop = %s" , Type::str(foop), Type::str(xoop)); ::breakpoint(); } } while (0) |
| 1611 | Type::str(foop), Type::str(xoop))do { if (!(foop == flatten_alias_type(xoop))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1611, "assert(" "foop == flatten_alias_type(xoop)" ") failed" , "exactness must not affect alias type: foop = %s; xoop = %s" , Type::str(foop), Type::str(xoop)); ::breakpoint(); } } while (0); |
| 1612 | } |
| 1613 | } |
| 1614 | #endif |
| 1615 | |
| 1616 | int idx = AliasIdxTop; |
| 1617 | for (int i = 0; i < num_alias_types(); i++) { |
| 1618 | if (alias_type(i)->adr_type() == flat) { |
| 1619 | idx = i; |
| 1620 | break; |
| 1621 | } |
| 1622 | } |
| 1623 | |
| 1624 | if (idx == AliasIdxTop) { |
| 1625 | if (no_create) return NULL__null; |
| 1626 | // Grow the array if necessary. |
| 1627 | if (_num_alias_types == _max_alias_types) grow_alias_types(); |
| 1628 | // Add a new alias type. |
| 1629 | idx = _num_alias_types++; |
| 1630 | _alias_types[idx]->Init(idx, flat); |
| 1631 | if (flat == TypeInstPtr::KLASS) alias_type(idx)->set_rewritable(false); |
| 1632 | if (flat == TypeAryPtr::RANGE) alias_type(idx)->set_rewritable(false); |
| 1633 | if (flat->isa_instptr()) { |
| 1634 | if (flat->offset() == java_lang_Class::klass_offset() |
| 1635 | && flat->is_instptr()->klass() == env()->Class_klass()) |
| 1636 | alias_type(idx)->set_rewritable(false); |
| 1637 | } |
| 1638 | if (flat->isa_aryptr()) { |
| 1639 | #ifdef ASSERT1 |
| 1640 | const int header_size_min = arrayOopDesc::base_offset_in_bytes(T_BYTE); |
| 1641 | // (T_BYTE has the weakest alignment and size restrictions...) |
| 1642 | assert(flat->offset() < header_size_min, "array body reference must be OffsetBot")do { if (!(flat->offset() < header_size_min)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1642, "assert(" "flat->offset() < header_size_min" ") failed" , "array body reference must be OffsetBot"); ::breakpoint(); } } while (0); |
| 1643 | #endif |
| 1644 | if (flat->offset() == TypePtr::OffsetBot) { |
| 1645 | alias_type(idx)->set_element(flat->is_aryptr()->elem()); |
| 1646 | } |
| 1647 | } |
| 1648 | if (flat->isa_klassptr()) { |
| 1649 | if (flat->offset() == in_bytes(Klass::super_check_offset_offset())) |
| 1650 | alias_type(idx)->set_rewritable(false); |
| 1651 | if (flat->offset() == in_bytes(Klass::modifier_flags_offset())) |
| 1652 | alias_type(idx)->set_rewritable(false); |
| 1653 | if (flat->offset() == in_bytes(Klass::access_flags_offset())) |
| 1654 | alias_type(idx)->set_rewritable(false); |
| 1655 | if (flat->offset() == in_bytes(Klass::java_mirror_offset())) |
| 1656 | alias_type(idx)->set_rewritable(false); |
| 1657 | if (flat->offset() == in_bytes(Klass::secondary_super_cache_offset())) |
| 1658 | alias_type(idx)->set_rewritable(false); |
| 1659 | } |
| 1660 | // %%% (We would like to finalize JavaThread::threadObj_offset(), |
| 1661 | // but the base pointer type is not distinctive enough to identify |
| 1662 | // references into JavaThread.) |
| 1663 | |
| 1664 | // Check for final fields. |
| 1665 | const TypeInstPtr* tinst = flat->isa_instptr(); |
| 1666 | if (tinst && tinst->offset() >= instanceOopDesc::base_offset_in_bytes()) { |
| 1667 | ciField* field; |
| 1668 | if (tinst->const_oop() != NULL__null && |
| 1669 | tinst->klass() == ciEnv::current()->Class_klass() && |
| 1670 | tinst->offset() >= (tinst->klass()->as_instance_klass()->layout_helper_size_in_bytes())) { |
| 1671 | // static field |
| 1672 | ciInstanceKlass* k = tinst->const_oop()->as_instance()->java_lang_Class_klass()->as_instance_klass(); |
| 1673 | field = k->get_field_by_offset(tinst->offset(), true); |
| 1674 | } else { |
| 1675 | ciInstanceKlass *k = tinst->klass()->as_instance_klass(); |
| 1676 | field = k->get_field_by_offset(tinst->offset(), false); |
| 1677 | } |
| 1678 | assert(field == NULL ||do { if (!(field == __null || original_field == __null || (field ->holder() == original_field->holder() && field ->offset() == original_field->offset() && field ->is_static() == original_field->is_static()))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1682, "assert(" "field == __null || original_field == __null || (field->holder() == original_field->holder() && field->offset() == original_field->offset() && field->is_static() == original_field->is_static())" ") failed", "wrong field?"); ::breakpoint(); } } while (0) |
| 1679 | original_field == NULL ||do { if (!(field == __null || original_field == __null || (field ->holder() == original_field->holder() && field ->offset() == original_field->offset() && field ->is_static() == original_field->is_static()))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1682, "assert(" "field == __null || original_field == __null || (field->holder() == original_field->holder() && field->offset() == original_field->offset() && field->is_static() == original_field->is_static())" ") failed", "wrong field?"); ::breakpoint(); } } while (0) |
| 1680 | (field->holder() == original_field->holder() &&do { if (!(field == __null || original_field == __null || (field ->holder() == original_field->holder() && field ->offset() == original_field->offset() && field ->is_static() == original_field->is_static()))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1682, "assert(" "field == __null || original_field == __null || (field->holder() == original_field->holder() && field->offset() == original_field->offset() && field->is_static() == original_field->is_static())" ") failed", "wrong field?"); ::breakpoint(); } } while (0) |
| 1681 | field->offset() == original_field->offset() &&do { if (!(field == __null || original_field == __null || (field ->holder() == original_field->holder() && field ->offset() == original_field->offset() && field ->is_static() == original_field->is_static()))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1682, "assert(" "field == __null || original_field == __null || (field->holder() == original_field->holder() && field->offset() == original_field->offset() && field->is_static() == original_field->is_static())" ") failed", "wrong field?"); ::breakpoint(); } } while (0) |
| 1682 | field->is_static() == original_field->is_static()), "wrong field?")do { if (!(field == __null || original_field == __null || (field ->holder() == original_field->holder() && field ->offset() == original_field->offset() && field ->is_static() == original_field->is_static()))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1682, "assert(" "field == __null || original_field == __null || (field->holder() == original_field->holder() && field->offset() == original_field->offset() && field->is_static() == original_field->is_static())" ") failed", "wrong field?"); ::breakpoint(); } } while (0); |
| 1683 | // Set field() and is_rewritable() attributes. |
| 1684 | if (field != NULL__null) alias_type(idx)->set_field(field); |
| 1685 | } |
| 1686 | } |
| 1687 | |
| 1688 | // Fill the cache for next time. |
| 1689 | ace->_adr_type = adr_type; |
| 1690 | ace->_index = idx; |
| 1691 | assert(alias_type(adr_type) == alias_type(idx), "type must be installed")do { if (!(alias_type(adr_type) == alias_type(idx))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1691, "assert(" "alias_type(adr_type) == alias_type(idx)" ") failed" , "type must be installed"); ::breakpoint(); } } while (0); |
| 1692 | |
| 1693 | // Might as well try to fill the cache for the flattened version, too. |
| 1694 | AliasCacheEntry* face = probe_alias_cache(flat); |
| 1695 | if (face->_adr_type == NULL__null) { |
| 1696 | face->_adr_type = flat; |
| 1697 | face->_index = idx; |
| 1698 | assert(alias_type(flat) == alias_type(idx), "flat type must work too")do { if (!(alias_type(flat) == alias_type(idx))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1698, "assert(" "alias_type(flat) == alias_type(idx)" ") failed" , "flat type must work too"); ::breakpoint(); } } while (0); |
| 1699 | } |
| 1700 | |
| 1701 | return alias_type(idx); |
| 1702 | } |
| 1703 | |
| 1704 | |
| 1705 | Compile::AliasType* Compile::alias_type(ciField* field) { |
| 1706 | const TypeOopPtr* t; |
| 1707 | if (field->is_static()) |
| 1708 | t = TypeInstPtr::make(field->holder()->java_mirror()); |
| 1709 | else |
| 1710 | t = TypeOopPtr::make_from_klass_raw(field->holder()); |
| 1711 | AliasType* atp = alias_type(t->add_offset(field->offset_in_bytes()), field); |
| 1712 | assert((field->is_final() || field->is_stable()) == !atp->is_rewritable(), "must get the rewritable bits correct")do { if (!((field->is_final() || field->is_stable()) == !atp->is_rewritable())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1712, "assert(" "(field->is_final() || field->is_stable()) == !atp->is_rewritable()" ") failed", "must get the rewritable bits correct"); ::breakpoint (); } } while (0); |
| 1713 | return atp; |
| 1714 | } |
| 1715 | |
| 1716 | |
| 1717 | //------------------------------have_alias_type-------------------------------- |
| 1718 | bool Compile::have_alias_type(const TypePtr* adr_type) { |
| 1719 | AliasCacheEntry* ace = probe_alias_cache(adr_type); |
| 1720 | if (ace->_adr_type == adr_type) { |
| 1721 | return true; |
| 1722 | } |
| 1723 | |
| 1724 | // Handle special cases. |
| 1725 | if (adr_type == NULL__null) return true; |
| 1726 | if (adr_type == TypePtr::BOTTOM) return true; |
| 1727 | |
| 1728 | return find_alias_type(adr_type, true, NULL__null) != NULL__null; |
| 1729 | } |
| 1730 | |
| 1731 | //-----------------------------must_alias-------------------------------------- |
| 1732 | // True if all values of the given address type are in the given alias category. |
| 1733 | bool Compile::must_alias(const TypePtr* adr_type, int alias_idx) { |
| 1734 | if (alias_idx == AliasIdxBot) return true; // the universal category |
| 1735 | if (adr_type == NULL__null) return true; // NULL serves as TypePtr::TOP |
| 1736 | if (alias_idx == AliasIdxTop) return false; // the empty category |
| 1737 | if (adr_type->base() == Type::AnyPtr) return false; // TypePtr::BOTTOM or its twins |
| 1738 | |
| 1739 | // the only remaining possible overlap is identity |
| 1740 | int adr_idx = get_alias_index(adr_type); |
| 1741 | assert(adr_idx != AliasIdxBot && adr_idx != AliasIdxTop, "")do { if (!(adr_idx != AliasIdxBot && adr_idx != AliasIdxTop )) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1741, "assert(" "adr_idx != AliasIdxBot && adr_idx != AliasIdxTop" ") failed", ""); ::breakpoint(); } } while (0); |
| 1742 | assert(adr_idx == alias_idx ||do { if (!(adr_idx == alias_idx || (alias_type(alias_idx)-> adr_type() != TypeOopPtr::BOTTOM && adr_type != TypeOopPtr ::BOTTOM))) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1745, "assert(" "adr_idx == alias_idx || (alias_type(alias_idx)->adr_type() != TypeOopPtr::BOTTOM && adr_type != TypeOopPtr::BOTTOM)" ") failed", "should not be testing for overlap with an unsafe pointer" ); ::breakpoint(); } } while (0) |
| 1743 | (alias_type(alias_idx)->adr_type() != TypeOopPtr::BOTTOMdo { if (!(adr_idx == alias_idx || (alias_type(alias_idx)-> adr_type() != TypeOopPtr::BOTTOM && adr_type != TypeOopPtr ::BOTTOM))) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1745, "assert(" "adr_idx == alias_idx || (alias_type(alias_idx)->adr_type() != TypeOopPtr::BOTTOM && adr_type != TypeOopPtr::BOTTOM)" ") failed", "should not be testing for overlap with an unsafe pointer" ); ::breakpoint(); } } while (0) |
| 1744 | && adr_type != TypeOopPtr::BOTTOM),do { if (!(adr_idx == alias_idx || (alias_type(alias_idx)-> adr_type() != TypeOopPtr::BOTTOM && adr_type != TypeOopPtr ::BOTTOM))) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1745, "assert(" "adr_idx == alias_idx || (alias_type(alias_idx)->adr_type() != TypeOopPtr::BOTTOM && adr_type != TypeOopPtr::BOTTOM)" ") failed", "should not be testing for overlap with an unsafe pointer" ); ::breakpoint(); } } while (0) |
| 1745 | "should not be testing for overlap with an unsafe pointer")do { if (!(adr_idx == alias_idx || (alias_type(alias_idx)-> adr_type() != TypeOopPtr::BOTTOM && adr_type != TypeOopPtr ::BOTTOM))) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1745, "assert(" "adr_idx == alias_idx || (alias_type(alias_idx)->adr_type() != TypeOopPtr::BOTTOM && adr_type != TypeOopPtr::BOTTOM)" ") failed", "should not be testing for overlap with an unsafe pointer" ); ::breakpoint(); } } while (0); |
| 1746 | return adr_idx == alias_idx; |
| 1747 | } |
| 1748 | |
| 1749 | //------------------------------can_alias-------------------------------------- |
| 1750 | // True if any values of the given address type are in the given alias category. |
| 1751 | bool Compile::can_alias(const TypePtr* adr_type, int alias_idx) { |
| 1752 | if (alias_idx == AliasIdxTop) return false; // the empty category |
| 1753 | if (adr_type == NULL__null) return false; // NULL serves as TypePtr::TOP |
| 1754 | // Known instance doesn't alias with bottom memory |
| 1755 | if (alias_idx == AliasIdxBot) return !adr_type->is_known_instance(); // the universal category |
| 1756 | if (adr_type->base() == Type::AnyPtr) return !C->get_adr_type(alias_idx)->is_known_instance(); // TypePtr::BOTTOM or its twins |
| 1757 | |
| 1758 | // the only remaining possible overlap is identity |
| 1759 | int adr_idx = get_alias_index(adr_type); |
| 1760 | assert(adr_idx != AliasIdxBot && adr_idx != AliasIdxTop, "")do { if (!(adr_idx != AliasIdxBot && adr_idx != AliasIdxTop )) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1760, "assert(" "adr_idx != AliasIdxBot && adr_idx != AliasIdxTop" ") failed", ""); ::breakpoint(); } } while (0); |
| 1761 | return adr_idx == alias_idx; |
| 1762 | } |
| 1763 | |
| 1764 | //---------------------cleanup_loop_predicates----------------------- |
| 1765 | // Remove the opaque nodes that protect the predicates so that all unused |
| 1766 | // checks and uncommon_traps will be eliminated from the ideal graph |
| 1767 | void Compile::cleanup_loop_predicates(PhaseIterGVN &igvn) { |
| 1768 | if (predicate_count()==0) return; |
| 1769 | for (int i = predicate_count(); i > 0; i--) { |
| 1770 | Node * n = predicate_opaque1_node(i-1); |
| 1771 | assert(n->Opcode() == Op_Opaque1, "must be")do { if (!(n->Opcode() == Op_Opaque1)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1771, "assert(" "n->Opcode() == Op_Opaque1" ") failed", "must be" ); ::breakpoint(); } } while (0); |
| 1772 | igvn.replace_node(n, n->in(1)); |
| 1773 | } |
| 1774 | assert(predicate_count()==0, "should be clean!")do { if (!(predicate_count()==0)) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1774, "assert(" "predicate_count()==0" ") failed", "should be clean!" ); ::breakpoint(); } } while (0); |
| 1775 | } |
| 1776 | |
| 1777 | void Compile::record_for_post_loop_opts_igvn(Node* n) { |
| 1778 | if (!n->for_post_loop_opts_igvn()) { |
| 1779 | assert(!_for_post_loop_igvn.contains(n), "duplicate")do { if (!(!_for_post_loop_igvn.contains(n))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1779, "assert(" "!_for_post_loop_igvn.contains(n)" ") failed" , "duplicate"); ::breakpoint(); } } while (0); |
| 1780 | n->add_flag(Node::NodeFlags::Flag_for_post_loop_opts_igvn); |
| 1781 | _for_post_loop_igvn.append(n); |
| 1782 | } |
| 1783 | } |
| 1784 | |
| 1785 | void Compile::remove_from_post_loop_opts_igvn(Node* n) { |
| 1786 | n->remove_flag(Node::NodeFlags::Flag_for_post_loop_opts_igvn); |
| 1787 | _for_post_loop_igvn.remove(n); |
| 1788 | } |
| 1789 | |
| 1790 | void Compile::process_for_post_loop_opts_igvn(PhaseIterGVN& igvn) { |
| 1791 | // Verify that all previous optimizations produced a valid graph |
| 1792 | // at least to this point, even if no loop optimizations were done. |
| 1793 | PhaseIdealLoop::verify(igvn); |
| 1794 | |
| 1795 | C->set_post_loop_opts_phase(); // no more loop opts allowed |
| 1796 | |
| 1797 | assert(!C->major_progress(), "not cleared")do { if (!(!C->major_progress())) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1797, "assert(" "!C->major_progress()" ") failed", "not cleared" ); ::breakpoint(); } } while (0); |
| 1798 | |
| 1799 | if (_for_post_loop_igvn.length() > 0) { |
| 1800 | while (_for_post_loop_igvn.length() > 0) { |
| 1801 | Node* n = _for_post_loop_igvn.pop(); |
| 1802 | n->remove_flag(Node::NodeFlags::Flag_for_post_loop_opts_igvn); |
| 1803 | igvn._worklist.push(n); |
| 1804 | } |
| 1805 | igvn.optimize(); |
| 1806 | assert(_for_post_loop_igvn.length() == 0, "no more delayed nodes allowed")do { if (!(_for_post_loop_igvn.length() == 0)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1806, "assert(" "_for_post_loop_igvn.length() == 0" ") failed" , "no more delayed nodes allowed"); ::breakpoint(); } } while (0); |
| 1807 | |
| 1808 | // Sometimes IGVN sets major progress (e.g., when processing loop nodes). |
| 1809 | if (C->major_progress()) { |
| 1810 | C->clear_major_progress(); // ensure that major progress is now clear |
| 1811 | } |
| 1812 | } |
| 1813 | } |
| 1814 | |
| 1815 | // StringOpts and late inlining of string methods |
| 1816 | void Compile::inline_string_calls(bool parse_time) { |
| 1817 | { |
| 1818 | // remove useless nodes to make the usage analysis simpler |
| 1819 | ResourceMark rm; |
| 1820 | PhaseRemoveUseless pru(initial_gvn(), for_igvn()); |
| 1821 | } |
| 1822 | |
| 1823 | { |
| 1824 | ResourceMark rm; |
| 1825 | print_method(PHASE_BEFORE_STRINGOPTS, 3); |
| 1826 | PhaseStringOpts pso(initial_gvn(), for_igvn()); |
| 1827 | print_method(PHASE_AFTER_STRINGOPTS, 3); |
| 1828 | } |
| 1829 | |
| 1830 | // now inline anything that we skipped the first time around |
| 1831 | if (!parse_time) { |
| 1832 | _late_inlines_pos = _late_inlines.length(); |
| 1833 | } |
| 1834 | |
| 1835 | while (_string_late_inlines.length() > 0) { |
| 1836 | CallGenerator* cg = _string_late_inlines.pop(); |
| 1837 | cg->do_late_inline(); |
| 1838 | if (failing()) return; |
| 1839 | } |
| 1840 | _string_late_inlines.trunc_to(0); |
| 1841 | } |
| 1842 | |
| 1843 | // Late inlining of boxing methods |
| 1844 | void Compile::inline_boxing_calls(PhaseIterGVN& igvn) { |
| 1845 | if (_boxing_late_inlines.length() > 0) { |
| 1846 | assert(has_boxed_value(), "inconsistent")do { if (!(has_boxed_value())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1846, "assert(" "has_boxed_value()" ") failed", "inconsistent" ); ::breakpoint(); } } while (0); |
| 1847 | |
| 1848 | PhaseGVN* gvn = initial_gvn(); |
| 1849 | set_inlining_incrementally(true); |
| 1850 | |
| 1851 | assert( igvn._worklist.size() == 0, "should be done with igvn" )do { if (!(igvn._worklist.size() == 0)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1851, "assert(" "igvn._worklist.size() == 0" ") failed", "should be done with igvn" ); ::breakpoint(); } } while (0); |
| 1852 | for_igvn()->clear(); |
| 1853 | gvn->replace_with(&igvn); |
| 1854 | |
| 1855 | _late_inlines_pos = _late_inlines.length(); |
| 1856 | |
| 1857 | while (_boxing_late_inlines.length() > 0) { |
| 1858 | CallGenerator* cg = _boxing_late_inlines.pop(); |
| 1859 | cg->do_late_inline(); |
| 1860 | if (failing()) return; |
| 1861 | } |
| 1862 | _boxing_late_inlines.trunc_to(0); |
| 1863 | |
| 1864 | inline_incrementally_cleanup(igvn); |
| 1865 | |
| 1866 | set_inlining_incrementally(false); |
| 1867 | } |
| 1868 | } |
| 1869 | |
| 1870 | bool Compile::inline_incrementally_one() { |
| 1871 | assert(IncrementalInline, "incremental inlining should be on")do { if (!(IncrementalInline)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1871, "assert(" "IncrementalInline" ") failed", "incremental inlining should be on" ); ::breakpoint(); } } while (0); |
| 1872 | |
| 1873 | TracePhase tp("incrementalInline_inline", &timers[_t_incrInline_inline]); |
| 1874 | |
| 1875 | set_inlining_progress(false); |
| 1876 | set_do_cleanup(false); |
| 1877 | |
| 1878 | for (int i = 0; i < _late_inlines.length(); i++) { |
| 1879 | _late_inlines_pos = i+1; |
| 1880 | CallGenerator* cg = _late_inlines.at(i); |
| 1881 | bool does_dispatch = cg->is_virtual_late_inline() || cg->is_mh_late_inline(); |
| 1882 | if (inlining_incrementally() || does_dispatch) { // a call can be either inlined or strength-reduced to a direct call |
| 1883 | cg->do_late_inline(); |
| 1884 | assert(_late_inlines.at(i) == cg, "no insertions before current position allowed")do { if (!(_late_inlines.at(i) == cg)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1884, "assert(" "_late_inlines.at(i) == cg" ") failed", "no insertions before current position allowed" ); ::breakpoint(); } } while (0); |
| 1885 | if (failing()) { |
| 1886 | return false; |
| 1887 | } else if (inlining_progress()) { |
| 1888 | _late_inlines_pos = i+1; // restore the position in case new elements were inserted |
| 1889 | print_method(PHASE_INCREMENTAL_INLINE_STEP, cg->call_node(), 3); |
| 1890 | break; // process one call site at a time |
| 1891 | } |
| 1892 | } else { |
| 1893 | // Ignore late inline direct calls when inlining is not allowed. |
| 1894 | // They are left in the late inline list when node budget is exhausted until the list is fully drained. |
| 1895 | } |
| 1896 | } |
| 1897 | // Remove processed elements. |
| 1898 | _late_inlines.remove_till(_late_inlines_pos); |
| 1899 | _late_inlines_pos = 0; |
| 1900 | |
| 1901 | assert(inlining_progress() || _late_inlines.length() == 0, "no progress")do { if (!(inlining_progress() || _late_inlines.length() == 0 )) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1901, "assert(" "inlining_progress() || _late_inlines.length() == 0" ") failed", "no progress"); ::breakpoint(); } } while (0); |
| 1902 | |
| 1903 | bool needs_cleanup = do_cleanup() || over_inlining_cutoff(); |
| 1904 | |
| 1905 | set_inlining_progress(false); |
| 1906 | set_do_cleanup(false); |
| 1907 | |
| 1908 | bool force_cleanup = directive()->IncrementalInlineForceCleanupOption; |
| 1909 | return (_late_inlines.length() > 0) && !needs_cleanup && !force_cleanup; |
| 1910 | } |
| 1911 | |
| 1912 | void Compile::inline_incrementally_cleanup(PhaseIterGVN& igvn) { |
| 1913 | { |
| 1914 | TracePhase tp("incrementalInline_pru", &timers[_t_incrInline_pru]); |
| 1915 | ResourceMark rm; |
| 1916 | PhaseRemoveUseless pru(initial_gvn(), for_igvn()); |
| 1917 | } |
| 1918 | { |
| 1919 | TracePhase tp("incrementalInline_igvn", &timers[_t_incrInline_igvn]); |
| 1920 | igvn = PhaseIterGVN(initial_gvn()); |
| 1921 | igvn.optimize(); |
| 1922 | } |
| 1923 | print_method(PHASE_INCREMENTAL_INLINE_CLEANUP, 3); |
| 1924 | } |
| 1925 | |
| 1926 | // Perform incremental inlining until bound on number of live nodes is reached |
| 1927 | void Compile::inline_incrementally(PhaseIterGVN& igvn) { |
| 1928 | TracePhase tp("incrementalInline", &timers[_t_incrInline]); |
| 1929 | |
| 1930 | set_inlining_incrementally(true); |
| 1931 | uint low_live_nodes = 0; |
| 1932 | |
| 1933 | while (_late_inlines.length() > 0) { |
| 1934 | if (live_nodes() > (uint)LiveNodeCountInliningCutoff) { |
| 1935 | if (low_live_nodes < (uint)LiveNodeCountInliningCutoff * 8 / 10) { |
| 1936 | TracePhase tp("incrementalInline_ideal", &timers[_t_incrInline_ideal]); |
| 1937 | // PhaseIdealLoop is expensive so we only try it once we are |
| 1938 | // out of live nodes and we only try it again if the previous |
| 1939 | // helped got the number of nodes down significantly |
| 1940 | PhaseIdealLoop::optimize(igvn, LoopOptsNone); |
| 1941 | if (failing()) return; |
| 1942 | low_live_nodes = live_nodes(); |
| 1943 | _major_progress = true; |
| 1944 | } |
| 1945 | |
| 1946 | if (live_nodes() > (uint)LiveNodeCountInliningCutoff) { |
| 1947 | bool do_print_inlining = print_inlining() || print_intrinsics(); |
| 1948 | if (do_print_inlining || log() != NULL__null) { |
| 1949 | // Print inlining message for candidates that we couldn't inline for lack of space. |
| 1950 | for (int i = 0; i < _late_inlines.length(); i++) { |
| 1951 | CallGenerator* cg = _late_inlines.at(i); |
| 1952 | const char* msg = "live nodes > LiveNodeCountInliningCutoff"; |
| 1953 | if (do_print_inlining) { |
| 1954 | cg->print_inlining_late(msg); |
| 1955 | } |
| 1956 | log_late_inline_failure(cg, msg); |
| 1957 | } |
| 1958 | } |
| 1959 | break; // finish |
| 1960 | } |
| 1961 | } |
| 1962 | |
| 1963 | for_igvn()->clear(); |
| 1964 | initial_gvn()->replace_with(&igvn); |
| 1965 | |
| 1966 | while (inline_incrementally_one()) { |
| 1967 | assert(!failing(), "inconsistent")do { if (!(!failing())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1967, "assert(" "!failing()" ") failed", "inconsistent"); :: breakpoint(); } } while (0); |
| 1968 | } |
| 1969 | if (failing()) return; |
| 1970 | |
| 1971 | inline_incrementally_cleanup(igvn); |
| 1972 | |
| 1973 | print_method(PHASE_INCREMENTAL_INLINE_STEP, 3); |
| 1974 | |
| 1975 | if (failing()) return; |
| 1976 | |
| 1977 | if (_late_inlines.length() == 0) { |
| 1978 | break; // no more progress |
| 1979 | } |
| 1980 | } |
| 1981 | assert( igvn._worklist.size() == 0, "should be done with igvn" )do { if (!(igvn._worklist.size() == 0)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1981, "assert(" "igvn._worklist.size() == 0" ") failed", "should be done with igvn" ); ::breakpoint(); } } while (0); |
| 1982 | |
| 1983 | if (_string_late_inlines.length() > 0) { |
| 1984 | assert(has_stringbuilder(), "inconsistent")do { if (!(has_stringbuilder())) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 1984, "assert(" "has_stringbuilder()" ") failed", "inconsistent" ); ::breakpoint(); } } while (0); |
| 1985 | for_igvn()->clear(); |
| 1986 | initial_gvn()->replace_with(&igvn); |
| 1987 | |
| 1988 | inline_string_calls(false); |
| 1989 | |
| 1990 | if (failing()) return; |
| 1991 | |
| 1992 | inline_incrementally_cleanup(igvn); |
| 1993 | } |
| 1994 | |
| 1995 | set_inlining_incrementally(false); |
| 1996 | } |
| 1997 | |
| 1998 | void Compile::process_late_inline_calls_no_inline(PhaseIterGVN& igvn) { |
| 1999 | // "inlining_incrementally() == false" is used to signal that no inlining is allowed |
| 2000 | // (see LateInlineVirtualCallGenerator::do_late_inline_check() for details). |
| 2001 | // Tracking and verification of modified nodes is disabled by setting "_modified_nodes == NULL" |
| 2002 | // as if "inlining_incrementally() == true" were set. |
| 2003 | assert(inlining_incrementally() == false, "not allowed")do { if (!(inlining_incrementally() == false)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2003, "assert(" "inlining_incrementally() == false" ") failed" , "not allowed"); ::breakpoint(); } } while (0); |
| 2004 | assert(_modified_nodes == NULL, "not allowed")do { if (!(_modified_nodes == __null)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2004, "assert(" "_modified_nodes == __null" ") failed", "not allowed" ); ::breakpoint(); } } while (0); |
| 2005 | assert(_late_inlines.length() > 0, "sanity")do { if (!(_late_inlines.length() > 0)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2005, "assert(" "_late_inlines.length() > 0" ") failed", "sanity"); ::breakpoint(); } } while (0); |
| 2006 | |
| 2007 | while (_late_inlines.length() > 0) { |
| 2008 | for_igvn()->clear(); |
| 2009 | initial_gvn()->replace_with(&igvn); |
| 2010 | |
| 2011 | while (inline_incrementally_one()) { |
| 2012 | assert(!failing(), "inconsistent")do { if (!(!failing())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2012, "assert(" "!failing()" ") failed", "inconsistent"); :: breakpoint(); } } while (0); |
| 2013 | } |
| 2014 | if (failing()) return; |
| 2015 | |
| 2016 | inline_incrementally_cleanup(igvn); |
| 2017 | } |
| 2018 | } |
| 2019 | |
| 2020 | bool Compile::optimize_loops(PhaseIterGVN& igvn, LoopOptsMode mode) { |
| 2021 | if (_loop_opts_cnt > 0) { |
| 2022 | debug_only( int cnt = 0; )int cnt = 0;; |
| 2023 | while (major_progress() && (_loop_opts_cnt > 0)) { |
| 2024 | TracePhase tp("idealLoop", &timers[_t_idealLoop]); |
| 2025 | assert( cnt++ < 40, "infinite cycle in loop optimization" )do { if (!(cnt++ < 40)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2025, "assert(" "cnt++ < 40" ") failed", "infinite cycle in loop optimization" ); ::breakpoint(); } } while (0); |
| 2026 | PhaseIdealLoop::optimize(igvn, mode); |
| 2027 | _loop_opts_cnt--; |
| 2028 | if (failing()) return false; |
| 2029 | if (major_progress()) print_method(PHASE_PHASEIDEALLOOP_ITERATIONS, 2); |
| 2030 | } |
| 2031 | } |
| 2032 | return true; |
| 2033 | } |
| 2034 | |
| 2035 | // Remove edges from "root" to each SafePoint at a backward branch. |
| 2036 | // They were inserted during parsing (see add_safepoint()) to make |
| 2037 | // infinite loops without calls or exceptions visible to root, i.e., |
| 2038 | // useful. |
| 2039 | void Compile::remove_root_to_sfpts_edges(PhaseIterGVN& igvn) { |
| 2040 | Node *r = root(); |
| 2041 | if (r != NULL__null) { |
| 2042 | for (uint i = r->req(); i < r->len(); ++i) { |
| 2043 | Node *n = r->in(i); |
| 2044 | if (n != NULL__null && n->is_SafePoint()) { |
| 2045 | r->rm_prec(i); |
| 2046 | if (n->outcnt() == 0) { |
| 2047 | igvn.remove_dead_node(n); |
| 2048 | } |
| 2049 | --i; |
| 2050 | } |
| 2051 | } |
| 2052 | // Parsing may have added top inputs to the root node (Path |
| 2053 | // leading to the Halt node proven dead). Make sure we get a |
| 2054 | // chance to clean them up. |
| 2055 | igvn._worklist.push(r); |
| 2056 | igvn.optimize(); |
| 2057 | } |
| 2058 | } |
| 2059 | |
| 2060 | //------------------------------Optimize--------------------------------------- |
| 2061 | // Given a graph, optimize it. |
| 2062 | void Compile::Optimize() { |
| 2063 | TracePhase tp("optimizer", &timers[_t_optimizer]); |
| 2064 | |
| 2065 | #ifndef PRODUCT |
| 2066 | if (env()->break_at_compile()) { |
| 2067 | BREAKPOINT::breakpoint(); |
| 2068 | } |
| 2069 | |
| 2070 | #endif |
| 2071 | |
| 2072 | BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2(); |
| 2073 | #ifdef ASSERT1 |
| 2074 | bs->verify_gc_barriers(this, BarrierSetC2::BeforeOptimize); |
| 2075 | #endif |
| 2076 | |
| 2077 | ResourceMark rm; |
| 2078 | |
| 2079 | print_inlining_reinit(); |
| 2080 | |
| 2081 | NOT_PRODUCT( verify_graph_edges(); )verify_graph_edges(); |
| 2082 | |
| 2083 | print_method(PHASE_AFTER_PARSING); |
| 2084 | |
| 2085 | { |
| 2086 | // Iterative Global Value Numbering, including ideal transforms |
| 2087 | // Initialize IterGVN with types and values from parse-time GVN |
| 2088 | PhaseIterGVN igvn(initial_gvn()); |
| 2089 | #ifdef ASSERT1 |
| 2090 | _modified_nodes = new (comp_arena()) Unique_Node_List(comp_arena()); |
| 2091 | #endif |
| 2092 | { |
| 2093 | TracePhase tp("iterGVN", &timers[_t_iterGVN]); |
| 2094 | igvn.optimize(); |
| 2095 | } |
| 2096 | |
| 2097 | if (failing()) return; |
| 2098 | |
| 2099 | print_method(PHASE_ITER_GVN1, 2); |
| 2100 | |
| 2101 | inline_incrementally(igvn); |
| 2102 | |
| 2103 | print_method(PHASE_INCREMENTAL_INLINE, 2); |
| 2104 | |
| 2105 | if (failing()) return; |
| 2106 | |
| 2107 | if (eliminate_boxing()) { |
| 2108 | // Inline valueOf() methods now. |
| 2109 | inline_boxing_calls(igvn); |
| 2110 | |
| 2111 | if (AlwaysIncrementalInline) { |
| 2112 | inline_incrementally(igvn); |
| 2113 | } |
| 2114 | |
| 2115 | print_method(PHASE_INCREMENTAL_BOXING_INLINE, 2); |
| 2116 | |
| 2117 | if (failing()) return; |
| 2118 | } |
| 2119 | |
| 2120 | // Remove the speculative part of types and clean up the graph from |
| 2121 | // the extra CastPP nodes whose only purpose is to carry them. Do |
| 2122 | // that early so that optimizations are not disrupted by the extra |
| 2123 | // CastPP nodes. |
| 2124 | remove_speculative_types(igvn); |
| 2125 | |
| 2126 | // No more new expensive nodes will be added to the list from here |
| 2127 | // so keep only the actual candidates for optimizations. |
| 2128 | cleanup_expensive_nodes(igvn); |
| 2129 | |
| 2130 | assert(EnableVectorSupport || !has_vbox_nodes(), "sanity")do { if (!(EnableVectorSupport || !has_vbox_nodes())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2130, "assert(" "EnableVectorSupport || !has_vbox_nodes()" ") failed" , "sanity"); ::breakpoint(); } } while (0); |
| 2131 | if (EnableVectorSupport && has_vbox_nodes()) { |
| 2132 | TracePhase tp("", &timers[_t_vector]); |
| 2133 | PhaseVector pv(igvn); |
| 2134 | pv.optimize_vector_boxes(); |
| 2135 | |
| 2136 | print_method(PHASE_ITER_GVN_AFTER_VECTOR, 2); |
| 2137 | } |
| 2138 | assert(!has_vbox_nodes(), "sanity")do { if (!(!has_vbox_nodes())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2138, "assert(" "!has_vbox_nodes()" ") failed", "sanity"); :: breakpoint(); } } while (0); |
| 2139 | |
| 2140 | if (!failing() && RenumberLiveNodes && live_nodes() + NodeLimitFudgeFactor < unique()) { |
| 2141 | Compile::TracePhase tp("", &timers[_t_renumberLive]); |
| 2142 | initial_gvn()->replace_with(&igvn); |
| 2143 | Unique_Node_List* old_worklist = for_igvn(); |
| 2144 | old_worklist->clear(); |
| 2145 | Unique_Node_List new_worklist(C->comp_arena()); |
| 2146 | { |
| 2147 | ResourceMark rm; |
| 2148 | PhaseRenumberLive prl = PhaseRenumberLive(initial_gvn(), for_igvn(), &new_worklist); |
| 2149 | } |
| 2150 | Unique_Node_List* save_for_igvn = for_igvn(); |
| 2151 | set_for_igvn(&new_worklist); |
| 2152 | igvn = PhaseIterGVN(initial_gvn()); |
| 2153 | igvn.optimize(); |
| 2154 | set_for_igvn(old_worklist); // new_worklist is dead beyond this point |
| 2155 | } |
| 2156 | |
| 2157 | // Now that all inlining is over and no PhaseRemoveUseless will run, cut edge from root to loop |
| 2158 | // safepoints |
| 2159 | remove_root_to_sfpts_edges(igvn); |
| 2160 | |
| 2161 | // Perform escape analysis |
| 2162 | if (do_escape_analysis() && ConnectionGraph::has_candidates(this)) { |
| 2163 | if (has_loops()) { |
| 2164 | // Cleanup graph (remove dead nodes). |
| 2165 | TracePhase tp("idealLoop", &timers[_t_idealLoop]); |
| 2166 | PhaseIdealLoop::optimize(igvn, LoopOptsMaxUnroll); |
| 2167 | if (major_progress()) print_method(PHASE_PHASEIDEAL_BEFORE_EA, 2); |
| 2168 | if (failing()) return; |
| 2169 | } |
| 2170 | bool progress; |
| 2171 | do { |
| 2172 | ConnectionGraph::do_analysis(this, &igvn); |
| 2173 | |
| 2174 | if (failing()) return; |
| 2175 | |
| 2176 | int mcount = macro_count(); // Record number of allocations and locks before IGVN |
| 2177 | |
| 2178 | // Optimize out fields loads from scalar replaceable allocations. |
| 2179 | igvn.optimize(); |
| 2180 | print_method(PHASE_ITER_GVN_AFTER_EA, 2); |
| 2181 | |
| 2182 | if (failing()) return; |
| 2183 | |
| 2184 | if (congraph() != NULL__null && macro_count() > 0) { |
| 2185 | TracePhase tp("macroEliminate", &timers[_t_macroEliminate]); |
| 2186 | PhaseMacroExpand mexp(igvn); |
| 2187 | mexp.eliminate_macro_nodes(); |
| 2188 | igvn.set_delay_transform(false); |
| 2189 | |
| 2190 | igvn.optimize(); |
| 2191 | print_method(PHASE_ITER_GVN_AFTER_ELIMINATION, 2); |
| 2192 | |
| 2193 | if (failing()) return; |
| 2194 | } |
| 2195 | progress = do_iterative_escape_analysis() && |
| 2196 | (macro_count() < mcount) && |
| 2197 | ConnectionGraph::has_candidates(this); |
| 2198 | // Try again if candidates exist and made progress |
| 2199 | // by removing some allocations and/or locks. |
| 2200 | } while (progress); |
| 2201 | } |
| 2202 | |
| 2203 | // Loop transforms on the ideal graph. Range Check Elimination, |
| 2204 | // peeling, unrolling, etc. |
| 2205 | |
| 2206 | // Set loop opts counter |
| 2207 | if((_loop_opts_cnt > 0) && (has_loops() || has_split_ifs())) { |
| 2208 | { |
| 2209 | TracePhase tp("idealLoop", &timers[_t_idealLoop]); |
| 2210 | PhaseIdealLoop::optimize(igvn, LoopOptsDefault); |
| 2211 | _loop_opts_cnt--; |
| 2212 | if (major_progress()) print_method(PHASE_PHASEIDEALLOOP1, 2); |
| 2213 | if (failing()) return; |
| 2214 | } |
| 2215 | // Loop opts pass if partial peeling occurred in previous pass |
| 2216 | if(PartialPeelLoop && major_progress() && (_loop_opts_cnt > 0)) { |
| 2217 | TracePhase tp("idealLoop", &timers[_t_idealLoop]); |
| 2218 | PhaseIdealLoop::optimize(igvn, LoopOptsSkipSplitIf); |
| 2219 | _loop_opts_cnt--; |
| 2220 | if (major_progress()) print_method(PHASE_PHASEIDEALLOOP2, 2); |
| 2221 | if (failing()) return; |
| 2222 | } |
| 2223 | // Loop opts pass for loop-unrolling before CCP |
| 2224 | if(major_progress() && (_loop_opts_cnt > 0)) { |
| 2225 | TracePhase tp("idealLoop", &timers[_t_idealLoop]); |
| 2226 | PhaseIdealLoop::optimize(igvn, LoopOptsSkipSplitIf); |
| 2227 | _loop_opts_cnt--; |
| 2228 | if (major_progress()) print_method(PHASE_PHASEIDEALLOOP3, 2); |
| 2229 | } |
| 2230 | if (!failing()) { |
| 2231 | // Verify that last round of loop opts produced a valid graph |
| 2232 | PhaseIdealLoop::verify(igvn); |
| 2233 | } |
| 2234 | } |
| 2235 | if (failing()) return; |
| 2236 | |
| 2237 | // Conditional Constant Propagation; |
| 2238 | PhaseCCP ccp( &igvn ); |
| 2239 | assert( true, "Break here to ccp.dump_nodes_and_types(_root,999,1)")do { if (!(true)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2239, "assert(" "true" ") failed", "Break here to ccp.dump_nodes_and_types(_root,999,1)" ); ::breakpoint(); } } while (0); |
| 2240 | { |
| 2241 | TracePhase tp("ccp", &timers[_t_ccp]); |
| 2242 | ccp.do_transform(); |
| 2243 | } |
| 2244 | print_method(PHASE_CCP1, 2); |
| 2245 | |
| 2246 | assert( true, "Break here to ccp.dump_old2new_map()")do { if (!(true)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2246, "assert(" "true" ") failed", "Break here to ccp.dump_old2new_map()" ); ::breakpoint(); } } while (0); |
| 2247 | |
| 2248 | // Iterative Global Value Numbering, including ideal transforms |
| 2249 | { |
| 2250 | TracePhase tp("iterGVN2", &timers[_t_iterGVN2]); |
| 2251 | igvn = ccp; |
| 2252 | igvn.optimize(); |
| 2253 | } |
| 2254 | print_method(PHASE_ITER_GVN2, 2); |
| 2255 | |
| 2256 | if (failing()) return; |
| 2257 | |
| 2258 | // Loop transforms on the ideal graph. Range Check Elimination, |
| 2259 | // peeling, unrolling, etc. |
| 2260 | if (!optimize_loops(igvn, LoopOptsDefault)) { |
| 2261 | return; |
| 2262 | } |
| 2263 | |
| 2264 | if (failing()) return; |
| 2265 | |
| 2266 | C->clear_major_progress(); // ensure that major progress is now clear |
| 2267 | |
| 2268 | process_for_post_loop_opts_igvn(igvn); |
| 2269 | |
| 2270 | #ifdef ASSERT1 |
| 2271 | bs->verify_gc_barriers(this, BarrierSetC2::BeforeMacroExpand); |
| 2272 | #endif |
| 2273 | |
| 2274 | { |
| 2275 | TracePhase tp("macroExpand", &timers[_t_macroExpand]); |
| 2276 | PhaseMacroExpand mex(igvn); |
| 2277 | if (mex.expand_macro_nodes()) { |
| 2278 | assert(failing(), "must bail out w/ explicit message")do { if (!(failing())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2278, "assert(" "failing()" ") failed", "must bail out w/ explicit message" ); ::breakpoint(); } } while (0); |
| 2279 | return; |
| 2280 | } |
| 2281 | print_method(PHASE_MACRO_EXPANSION, 2); |
| 2282 | } |
| 2283 | |
| 2284 | { |
| 2285 | TracePhase tp("barrierExpand", &timers[_t_barrierExpand]); |
| 2286 | if (bs->expand_barriers(this, igvn)) { |
| 2287 | assert(failing(), "must bail out w/ explicit message")do { if (!(failing())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2287, "assert(" "failing()" ") failed", "must bail out w/ explicit message" ); ::breakpoint(); } } while (0); |
| 2288 | return; |
| 2289 | } |
| 2290 | print_method(PHASE_BARRIER_EXPANSION, 2); |
| 2291 | } |
| 2292 | |
| 2293 | if (C->max_vector_size() > 0) { |
| 2294 | C->optimize_logic_cones(igvn); |
| 2295 | igvn.optimize(); |
| 2296 | } |
| 2297 | |
| 2298 | DEBUG_ONLY( _modified_nodes = NULL; )_modified_nodes = __null; |
| 2299 | |
| 2300 | assert(igvn._worklist.size() == 0, "not empty")do { if (!(igvn._worklist.size() == 0)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2300, "assert(" "igvn._worklist.size() == 0" ") failed", "not empty" ); ::breakpoint(); } } while (0); |
| 2301 | |
| 2302 | assert(_late_inlines.length() == 0 || IncrementalInlineMH || IncrementalInlineVirtual, "not empty")do { if (!(_late_inlines.length() == 0 || IncrementalInlineMH || IncrementalInlineVirtual)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2302, "assert(" "_late_inlines.length() == 0 || IncrementalInlineMH || IncrementalInlineVirtual" ") failed", "not empty"); ::breakpoint(); } } while (0); |
| 2303 | |
| 2304 | if (_late_inlines.length() > 0) { |
| 2305 | // More opportunities to optimize virtual and MH calls. |
| 2306 | // Though it's maybe too late to perform inlining, strength-reducing them to direct calls is still an option. |
| 2307 | process_late_inline_calls_no_inline(igvn); |
| 2308 | } |
| 2309 | } // (End scope of igvn; run destructor if necessary for asserts.) |
| 2310 | |
| 2311 | check_no_dead_use(); |
| 2312 | |
| 2313 | process_print_inlining(); |
| 2314 | |
| 2315 | // A method with only infinite loops has no edges entering loops from root |
| 2316 | { |
| 2317 | TracePhase tp("graphReshape", &timers[_t_graphReshaping]); |
| 2318 | if (final_graph_reshaping()) { |
| 2319 | assert(failing(), "must bail out w/ explicit message")do { if (!(failing())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2319, "assert(" "failing()" ") failed", "must bail out w/ explicit message" ); ::breakpoint(); } } while (0); |
| 2320 | return; |
| 2321 | } |
| 2322 | } |
| 2323 | |
| 2324 | print_method(PHASE_OPTIMIZE_FINISHED, 2); |
| 2325 | DEBUG_ONLY(set_phase_optimize_finished();)set_phase_optimize_finished(); |
| 2326 | } |
| 2327 | |
| 2328 | #ifdef ASSERT1 |
| 2329 | void Compile::check_no_dead_use() const { |
| 2330 | ResourceMark rm; |
| 2331 | Unique_Node_List wq; |
| 2332 | wq.push(root()); |
| 2333 | for (uint i = 0; i < wq.size(); ++i) { |
| 2334 | Node* n = wq.at(i); |
| 2335 | for (DUIterator_Fast jmax, j = n->fast_outs(jmax); j < jmax; j++) { |
| 2336 | Node* u = n->fast_out(j); |
| 2337 | if (u->outcnt() == 0 && !u->is_Con()) { |
| 2338 | u->dump(); |
| 2339 | fatal("no reachable node should have no use")do { (*g_assert_poison) = 'X';; report_fatal(INTERNAL_ERROR, "/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2339, "no reachable node should have no use"); ::breakpoint (); } while (0); |
| 2340 | } |
| 2341 | wq.push(u); |
| 2342 | } |
| 2343 | } |
| 2344 | } |
| 2345 | #endif |
| 2346 | |
| 2347 | void Compile::inline_vector_reboxing_calls() { |
| 2348 | if (C->_vector_reboxing_late_inlines.length() > 0) { |
| 2349 | _late_inlines_pos = C->_late_inlines.length(); |
| 2350 | while (_vector_reboxing_late_inlines.length() > 0) { |
| 2351 | CallGenerator* cg = _vector_reboxing_late_inlines.pop(); |
| 2352 | cg->do_late_inline(); |
| 2353 | if (failing()) return; |
| 2354 | print_method(PHASE_INLINE_VECTOR_REBOX, cg->call_node()); |
| 2355 | } |
| 2356 | _vector_reboxing_late_inlines.trunc_to(0); |
| 2357 | } |
| 2358 | } |
| 2359 | |
| 2360 | bool Compile::has_vbox_nodes() { |
| 2361 | if (C->_vector_reboxing_late_inlines.length() > 0) { |
| 2362 | return true; |
| 2363 | } |
| 2364 | for (int macro_idx = C->macro_count() - 1; macro_idx >= 0; macro_idx--) { |
| 2365 | Node * n = C->macro_node(macro_idx); |
| 2366 | assert(n->is_macro(), "only macro nodes expected here")do { if (!(n->is_macro())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2366, "assert(" "n->is_macro()" ") failed", "only macro nodes expected here" ); ::breakpoint(); } } while (0); |
| 2367 | if (n->Opcode() == Op_VectorUnbox || n->Opcode() == Op_VectorBox || n->Opcode() == Op_VectorBoxAllocate) { |
| 2368 | return true; |
| 2369 | } |
| 2370 | } |
| 2371 | return false; |
| 2372 | } |
| 2373 | |
| 2374 | //---------------------------- Bitwise operation packing optimization --------------------------- |
| 2375 | |
| 2376 | static bool is_vector_unary_bitwise_op(Node* n) { |
| 2377 | return n->Opcode() == Op_XorV && |
| 2378 | n->req() == 2 && |
| 2379 | VectorNode::is_vector_bitwise_not_pattern(n); |
| 2380 | } |
| 2381 | |
| 2382 | static bool is_vector_binary_bitwise_op(Node* n) { |
| 2383 | switch (n->Opcode()) { |
| 2384 | case Op_AndV: |
| 2385 | case Op_OrV: |
| 2386 | return n->req() == 2; |
| 2387 | |
| 2388 | case Op_XorV: |
| 2389 | return !is_vector_unary_bitwise_op(n); |
| 2390 | |
| 2391 | default: |
| 2392 | return false; |
| 2393 | } |
| 2394 | } |
| 2395 | |
| 2396 | static bool is_vector_ternary_bitwise_op(Node* n) { |
| 2397 | return n->Opcode() == Op_MacroLogicV; |
| 2398 | } |
| 2399 | |
| 2400 | static bool is_vector_bitwise_op(Node* n) { |
| 2401 | return is_vector_unary_bitwise_op(n) || |
| 2402 | is_vector_binary_bitwise_op(n) || |
| 2403 | is_vector_ternary_bitwise_op(n); |
| 2404 | } |
| 2405 | |
| 2406 | static bool is_vector_bitwise_cone_root(Node* n) { |
| 2407 | if (n->bottom_type()->isa_vectmask() || !is_vector_bitwise_op(n)) { |
| 2408 | return false; |
| 2409 | } |
| 2410 | for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
| 2411 | if (is_vector_bitwise_op(n->fast_out(i))) { |
| 2412 | return false; |
| 2413 | } |
| 2414 | } |
| 2415 | return true; |
| 2416 | } |
| 2417 | |
| 2418 | static uint collect_unique_inputs(Node* n, Unique_Node_List& partition, Unique_Node_List& inputs) { |
| 2419 | uint cnt = 0; |
| 2420 | if (is_vector_bitwise_op(n)) { |
| 2421 | if (VectorNode::is_vector_bitwise_not_pattern(n)) { |
| 2422 | for (uint i = 1; i < n->req(); i++) { |
| 2423 | Node* in = n->in(i); |
| 2424 | bool skip = VectorNode::is_all_ones_vector(in); |
| 2425 | if (!skip && !inputs.member(in)) { |
| 2426 | inputs.push(in); |
| 2427 | cnt++; |
| 2428 | } |
| 2429 | } |
| 2430 | assert(cnt <= 1, "not unary")do { if (!(cnt <= 1)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2430, "assert(" "cnt <= 1" ") failed", "not unary"); ::breakpoint (); } } while (0); |
| 2431 | } else { |
| 2432 | uint last_req = n->req(); |
| 2433 | if (is_vector_ternary_bitwise_op(n)) { |
| 2434 | last_req = n->req() - 1; // skip last input |
| 2435 | } |
| 2436 | for (uint i = 1; i < last_req; i++) { |
| 2437 | Node* def = n->in(i); |
| 2438 | if (!inputs.member(def)) { |
| 2439 | inputs.push(def); |
| 2440 | cnt++; |
| 2441 | } |
| 2442 | } |
| 2443 | } |
| 2444 | partition.push(n); |
| 2445 | } else { // not a bitwise operations |
| 2446 | if (!inputs.member(n)) { |
| 2447 | inputs.push(n); |
| 2448 | cnt++; |
| 2449 | } |
| 2450 | } |
| 2451 | return cnt; |
| 2452 | } |
| 2453 | |
| 2454 | void Compile::collect_logic_cone_roots(Unique_Node_List& list) { |
| 2455 | Unique_Node_List useful_nodes; |
| 2456 | C->identify_useful_nodes(useful_nodes); |
| 2457 | |
| 2458 | for (uint i = 0; i < useful_nodes.size(); i++) { |
| 2459 | Node* n = useful_nodes.at(i); |
| 2460 | if (is_vector_bitwise_cone_root(n)) { |
| 2461 | list.push(n); |
| 2462 | } |
| 2463 | } |
| 2464 | } |
| 2465 | |
| 2466 | Node* Compile::xform_to_MacroLogicV(PhaseIterGVN& igvn, |
| 2467 | const TypeVect* vt, |
| 2468 | Unique_Node_List& partition, |
| 2469 | Unique_Node_List& inputs) { |
| 2470 | assert(partition.size() == 2 || partition.size() == 3, "not supported")do { if (!(partition.size() == 2 || partition.size() == 3)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2470, "assert(" "partition.size() == 2 || partition.size() == 3" ") failed", "not supported"); ::breakpoint(); } } while (0); |
| 2471 | assert(inputs.size() == 2 || inputs.size() == 3, "not supported")do { if (!(inputs.size() == 2 || inputs.size() == 3)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2471, "assert(" "inputs.size() == 2 || inputs.size() == 3" ") failed" , "not supported"); ::breakpoint(); } } while (0); |
| 2472 | assert(Matcher::match_rule_supported_vector(Op_MacroLogicV, vt->length(), vt->element_basic_type()), "not supported")do { if (!(Matcher::match_rule_supported_vector(Op_MacroLogicV , vt->length(), vt->element_basic_type()))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2472, "assert(" "Matcher::match_rule_supported_vector(Op_MacroLogicV, vt->length(), vt->element_basic_type())" ") failed", "not supported"); ::breakpoint(); } } while (0); |
| 2473 | |
| 2474 | Node* in1 = inputs.at(0); |
| 2475 | Node* in2 = inputs.at(1); |
| 2476 | Node* in3 = (inputs.size() == 3 ? inputs.at(2) : in2); |
| 2477 | |
| 2478 | uint func = compute_truth_table(partition, inputs); |
| 2479 | return igvn.transform(MacroLogicVNode::make(igvn, in3, in2, in1, func, vt)); |
| 2480 | } |
| 2481 | |
| 2482 | static uint extract_bit(uint func, uint pos) { |
| 2483 | return (func & (1 << pos)) >> pos; |
| 2484 | } |
| 2485 | |
| 2486 | // |
| 2487 | // A macro logic node represents a truth table. It has 4 inputs, |
| 2488 | // First three inputs corresponds to 3 columns of a truth table |
| 2489 | // and fourth input captures the logic function. |
| 2490 | // |
| 2491 | // eg. fn = (in1 AND in2) OR in3; |
| 2492 | // |
| 2493 | // MacroNode(in1,in2,in3,fn) |
| 2494 | // |
| 2495 | // ----------------- |
| 2496 | // in1 in2 in3 fn |
| 2497 | // ----------------- |
| 2498 | // 0 0 0 0 |
| 2499 | // 0 0 1 1 |
| 2500 | // 0 1 0 0 |
| 2501 | // 0 1 1 1 |
| 2502 | // 1 0 0 0 |
| 2503 | // 1 0 1 1 |
| 2504 | // 1 1 0 1 |
| 2505 | // 1 1 1 1 |
| 2506 | // |
| 2507 | |
| 2508 | uint Compile::eval_macro_logic_op(uint func, uint in1 , uint in2, uint in3) { |
| 2509 | int res = 0; |
| 2510 | for (int i = 0; i < 8; i++) { |
| 2511 | int bit1 = extract_bit(in1, i); |
| 2512 | int bit2 = extract_bit(in2, i); |
| 2513 | int bit3 = extract_bit(in3, i); |
| 2514 | |
| 2515 | int func_bit_pos = (bit1 << 2 | bit2 << 1 | bit3); |
| 2516 | int func_bit = extract_bit(func, func_bit_pos); |
| 2517 | |
| 2518 | res |= func_bit << i; |
| 2519 | } |
| 2520 | return res; |
| 2521 | } |
| 2522 | |
| 2523 | static uint eval_operand(Node* n, ResourceHashtable<Node*,uint>& eval_map) { |
| 2524 | assert(n != NULL, "")do { if (!(n != __null)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2524, "assert(" "n != __null" ") failed", ""); ::breakpoint (); } } while (0); |
| 2525 | assert(eval_map.contains(n), "absent")do { if (!(eval_map.contains(n))) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2525, "assert(" "eval_map.contains(n)" ") failed", "absent" ); ::breakpoint(); } } while (0); |
| 2526 | return *(eval_map.get(n)); |
| 2527 | } |
| 2528 | |
| 2529 | static void eval_operands(Node* n, |
| 2530 | uint& func1, uint& func2, uint& func3, |
| 2531 | ResourceHashtable<Node*,uint>& eval_map) { |
| 2532 | assert(is_vector_bitwise_op(n), "")do { if (!(is_vector_bitwise_op(n))) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2532, "assert(" "is_vector_bitwise_op(n)" ") failed", ""); :: breakpoint(); } } while (0); |
| 2533 | |
| 2534 | if (is_vector_unary_bitwise_op(n)) { |
| 2535 | Node* opnd = n->in(1); |
| 2536 | if (VectorNode::is_vector_bitwise_not_pattern(n) && VectorNode::is_all_ones_vector(opnd)) { |
| 2537 | opnd = n->in(2); |
| 2538 | } |
| 2539 | func1 = eval_operand(opnd, eval_map); |
| 2540 | } else if (is_vector_binary_bitwise_op(n)) { |
| 2541 | func1 = eval_operand(n->in(1), eval_map); |
| 2542 | func2 = eval_operand(n->in(2), eval_map); |
| 2543 | } else { |
| 2544 | assert(is_vector_ternary_bitwise_op(n), "unknown operation")do { if (!(is_vector_ternary_bitwise_op(n))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2544, "assert(" "is_vector_ternary_bitwise_op(n)" ") failed" , "unknown operation"); ::breakpoint(); } } while (0); |
| 2545 | func1 = eval_operand(n->in(1), eval_map); |
| 2546 | func2 = eval_operand(n->in(2), eval_map); |
| 2547 | func3 = eval_operand(n->in(3), eval_map); |
| 2548 | } |
| 2549 | } |
| 2550 | |
| 2551 | uint Compile::compute_truth_table(Unique_Node_List& partition, Unique_Node_List& inputs) { |
| 2552 | assert(inputs.size() <= 3, "sanity")do { if (!(inputs.size() <= 3)) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2552, "assert(" "inputs.size() <= 3" ") failed", "sanity" ); ::breakpoint(); } } while (0); |
| 2553 | ResourceMark rm; |
| 2554 | uint res = 0; |
| 2555 | ResourceHashtable<Node*,uint> eval_map; |
| 2556 | |
| 2557 | // Populate precomputed functions for inputs. |
| 2558 | // Each input corresponds to one column of 3 input truth-table. |
| 2559 | uint input_funcs[] = { 0xAA, // (_, _, a) -> a |
| 2560 | 0xCC, // (_, b, _) -> b |
| 2561 | 0xF0 }; // (c, _, _) -> c |
| 2562 | for (uint i = 0; i < inputs.size(); i++) { |
| 2563 | eval_map.put(inputs.at(i), input_funcs[i]); |
| 2564 | } |
| 2565 | |
| 2566 | for (uint i = 0; i < partition.size(); i++) { |
| 2567 | Node* n = partition.at(i); |
| 2568 | |
| 2569 | uint func1 = 0, func2 = 0, func3 = 0; |
| 2570 | eval_operands(n, func1, func2, func3, eval_map); |
| 2571 | |
| 2572 | switch (n->Opcode()) { |
| 2573 | case Op_OrV: |
| 2574 | assert(func3 == 0, "not binary")do { if (!(func3 == 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2574, "assert(" "func3 == 0" ") failed", "not binary"); ::breakpoint (); } } while (0); |
| 2575 | res = func1 | func2; |
| 2576 | break; |
| 2577 | case Op_AndV: |
| 2578 | assert(func3 == 0, "not binary")do { if (!(func3 == 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2578, "assert(" "func3 == 0" ") failed", "not binary"); ::breakpoint (); } } while (0); |
| 2579 | res = func1 & func2; |
| 2580 | break; |
| 2581 | case Op_XorV: |
| 2582 | if (VectorNode::is_vector_bitwise_not_pattern(n)) { |
| 2583 | assert(func2 == 0 && func3 == 0, "not unary")do { if (!(func2 == 0 && func3 == 0)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2583, "assert(" "func2 == 0 && func3 == 0" ") failed" , "not unary"); ::breakpoint(); } } while (0); |
| 2584 | res = (~func1) & 0xFF; |
| 2585 | } else { |
| 2586 | assert(func3 == 0, "not binary")do { if (!(func3 == 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2586, "assert(" "func3 == 0" ") failed", "not binary"); ::breakpoint (); } } while (0); |
| 2587 | res = func1 ^ func2; |
| 2588 | } |
| 2589 | break; |
| 2590 | case Op_MacroLogicV: |
| 2591 | // Ordering of inputs may change during evaluation of sub-tree |
| 2592 | // containing MacroLogic node as a child node, thus a re-evaluation |
| 2593 | // makes sure that function is evaluated in context of current |
| 2594 | // inputs. |
| 2595 | res = eval_macro_logic_op(n->in(4)->get_int(), func1, func2, func3); |
| 2596 | break; |
| 2597 | |
| 2598 | default: assert(false, "not supported: %s", n->Name())do { if (!(false)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2598, "assert(" "false" ") failed", "not supported: %s", n-> Name()); ::breakpoint(); } } while (0); |
| 2599 | } |
| 2600 | assert(res <= 0xFF, "invalid")do { if (!(res <= 0xFF)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2600, "assert(" "res <= 0xFF" ") failed", "invalid"); :: breakpoint(); } } while (0); |
| 2601 | eval_map.put(n, res); |
| 2602 | } |
| 2603 | return res; |
| 2604 | } |
| 2605 | |
| 2606 | bool Compile::compute_logic_cone(Node* n, Unique_Node_List& partition, Unique_Node_List& inputs) { |
| 2607 | assert(partition.size() == 0, "not empty")do { if (!(partition.size() == 0)) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2607, "assert(" "partition.size() == 0" ") failed", "not empty" ); ::breakpoint(); } } while (0); |
| 2608 | assert(inputs.size() == 0, "not empty")do { if (!(inputs.size() == 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2608, "assert(" "inputs.size() == 0" ") failed", "not empty" ); ::breakpoint(); } } while (0); |
| 2609 | if (is_vector_ternary_bitwise_op(n)) { |
| 2610 | return false; |
| 2611 | } |
| 2612 | |
| 2613 | bool is_unary_op = is_vector_unary_bitwise_op(n); |
| 2614 | if (is_unary_op) { |
| 2615 | assert(collect_unique_inputs(n, partition, inputs) == 1, "not unary")do { if (!(collect_unique_inputs(n, partition, inputs) == 1)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2615, "assert(" "collect_unique_inputs(n, partition, inputs) == 1" ") failed", "not unary"); ::breakpoint(); } } while (0); |
| 2616 | return false; // too few inputs |
| 2617 | } |
| 2618 | |
| 2619 | assert(is_vector_binary_bitwise_op(n), "not binary")do { if (!(is_vector_binary_bitwise_op(n))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2619, "assert(" "is_vector_binary_bitwise_op(n)" ") failed" , "not binary"); ::breakpoint(); } } while (0); |
| 2620 | Node* in1 = n->in(1); |
| 2621 | Node* in2 = n->in(2); |
| 2622 | |
| 2623 | int in1_unique_inputs_cnt = collect_unique_inputs(in1, partition, inputs); |
| 2624 | int in2_unique_inputs_cnt = collect_unique_inputs(in2, partition, inputs); |
| 2625 | partition.push(n); |
| 2626 | |
| 2627 | // Too many inputs? |
| 2628 | if (inputs.size() > 3) { |
| 2629 | partition.clear(); |
| 2630 | inputs.clear(); |
| 2631 | { // Recompute in2 inputs |
| 2632 | Unique_Node_List not_used; |
| 2633 | in2_unique_inputs_cnt = collect_unique_inputs(in2, not_used, not_used); |
| 2634 | } |
| 2635 | // Pick the node with minimum number of inputs. |
| 2636 | if (in1_unique_inputs_cnt >= 3 && in2_unique_inputs_cnt >= 3) { |
| 2637 | return false; // still too many inputs |
| 2638 | } |
| 2639 | // Recompute partition & inputs. |
| 2640 | Node* child = (in1_unique_inputs_cnt < in2_unique_inputs_cnt ? in1 : in2); |
| 2641 | collect_unique_inputs(child, partition, inputs); |
| 2642 | |
| 2643 | Node* other_input = (in1_unique_inputs_cnt < in2_unique_inputs_cnt ? in2 : in1); |
| 2644 | inputs.push(other_input); |
| 2645 | |
| 2646 | partition.push(n); |
| 2647 | } |
| 2648 | |
| 2649 | return (partition.size() == 2 || partition.size() == 3) && |
| 2650 | (inputs.size() == 2 || inputs.size() == 3); |
| 2651 | } |
| 2652 | |
| 2653 | |
| 2654 | void Compile::process_logic_cone_root(PhaseIterGVN &igvn, Node *n, VectorSet &visited) { |
| 2655 | assert(is_vector_bitwise_op(n), "not a root")do { if (!(is_vector_bitwise_op(n))) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2655, "assert(" "is_vector_bitwise_op(n)" ") failed", "not a root" ); ::breakpoint(); } } while (0); |
| 2656 | |
| 2657 | visited.set(n->_idx); |
| 2658 | |
| 2659 | // 1) Do a DFS walk over the logic cone. |
| 2660 | for (uint i = 1; i < n->req(); i++) { |
| 2661 | Node* in = n->in(i); |
| 2662 | if (!visited.test(in->_idx) && is_vector_bitwise_op(in)) { |
| 2663 | process_logic_cone_root(igvn, in, visited); |
| 2664 | } |
| 2665 | } |
| 2666 | |
| 2667 | // 2) Bottom up traversal: Merge node[s] with |
| 2668 | // the parent to form macro logic node. |
| 2669 | Unique_Node_List partition; |
| 2670 | Unique_Node_List inputs; |
| 2671 | if (compute_logic_cone(n, partition, inputs)) { |
| 2672 | const TypeVect* vt = n->bottom_type()->is_vect(); |
| 2673 | Node* macro_logic = xform_to_MacroLogicV(igvn, vt, partition, inputs); |
| 2674 | igvn.replace_node(n, macro_logic); |
| 2675 | } |
| 2676 | } |
| 2677 | |
| 2678 | void Compile::optimize_logic_cones(PhaseIterGVN &igvn) { |
| 2679 | ResourceMark rm; |
| 2680 | if (Matcher::match_rule_supported(Op_MacroLogicV)) { |
| 2681 | Unique_Node_List list; |
| 2682 | collect_logic_cone_roots(list); |
| 2683 | |
| 2684 | while (list.size() > 0) { |
| 2685 | Node* n = list.pop(); |
| 2686 | const TypeVect* vt = n->bottom_type()->is_vect(); |
| 2687 | bool supported = Matcher::match_rule_supported_vector(Op_MacroLogicV, vt->length(), vt->element_basic_type()); |
| 2688 | if (supported) { |
| 2689 | VectorSet visited(comp_arena()); |
| 2690 | process_logic_cone_root(igvn, n, visited); |
| 2691 | } |
| 2692 | } |
| 2693 | } |
| 2694 | } |
| 2695 | |
| 2696 | //------------------------------Code_Gen--------------------------------------- |
| 2697 | // Given a graph, generate code for it |
| 2698 | void Compile::Code_Gen() { |
| 2699 | if (failing()) { |
| 2700 | return; |
| 2701 | } |
| 2702 | |
| 2703 | // Perform instruction selection. You might think we could reclaim Matcher |
| 2704 | // memory PDQ, but actually the Matcher is used in generating spill code. |
| 2705 | // Internals of the Matcher (including some VectorSets) must remain live |
| 2706 | // for awhile - thus I cannot reclaim Matcher memory lest a VectorSet usage |
| 2707 | // set a bit in reclaimed memory. |
| 2708 | |
| 2709 | // In debug mode can dump m._nodes.dump() for mapping of ideal to machine |
| 2710 | // nodes. Mapping is only valid at the root of each matched subtree. |
| 2711 | NOT_PRODUCT( verify_graph_edges(); )verify_graph_edges(); |
| 2712 | |
| 2713 | Matcher matcher; |
| 2714 | _matcher = &matcher; |
| 2715 | { |
| 2716 | TracePhase tp("matcher", &timers[_t_matcher]); |
| 2717 | matcher.match(); |
| 2718 | if (failing()) { |
| 2719 | return; |
| 2720 | } |
| 2721 | } |
| 2722 | // In debug mode can dump m._nodes.dump() for mapping of ideal to machine |
| 2723 | // nodes. Mapping is only valid at the root of each matched subtree. |
| 2724 | NOT_PRODUCT( verify_graph_edges(); )verify_graph_edges(); |
| 2725 | |
| 2726 | // If you have too many nodes, or if matching has failed, bail out |
| 2727 | check_node_count(0, "out of nodes matching instructions"); |
| 2728 | if (failing()) { |
| 2729 | return; |
| 2730 | } |
| 2731 | |
| 2732 | print_method(PHASE_MATCHING, 2); |
| 2733 | |
| 2734 | // Build a proper-looking CFG |
| 2735 | PhaseCFG cfg(node_arena(), root(), matcher); |
| 2736 | _cfg = &cfg; |
| 2737 | { |
| 2738 | TracePhase tp("scheduler", &timers[_t_scheduler]); |
| 2739 | bool success = cfg.do_global_code_motion(); |
| 2740 | if (!success) { |
| 2741 | return; |
| 2742 | } |
| 2743 | |
| 2744 | print_method(PHASE_GLOBAL_CODE_MOTION, 2); |
| 2745 | NOT_PRODUCT( verify_graph_edges(); )verify_graph_edges(); |
| 2746 | cfg.verify(); |
| 2747 | } |
| 2748 | |
| 2749 | PhaseChaitin regalloc(unique(), cfg, matcher, false); |
| 2750 | _regalloc = ®alloc; |
| 2751 | { |
| 2752 | TracePhase tp("regalloc", &timers[_t_registerAllocation]); |
| 2753 | // Perform register allocation. After Chaitin, use-def chains are |
| 2754 | // no longer accurate (at spill code) and so must be ignored. |
| 2755 | // Node->LRG->reg mappings are still accurate. |
| 2756 | _regalloc->Register_Allocate(); |
| 2757 | |
| 2758 | // Bail out if the allocator builds too many nodes |
| 2759 | if (failing()) { |
| 2760 | return; |
| 2761 | } |
| 2762 | } |
| 2763 | |
| 2764 | // Prior to register allocation we kept empty basic blocks in case the |
| 2765 | // the allocator needed a place to spill. After register allocation we |
| 2766 | // are not adding any new instructions. If any basic block is empty, we |
| 2767 | // can now safely remove it. |
| 2768 | { |
| 2769 | TracePhase tp("blockOrdering", &timers[_t_blockOrdering]); |
| 2770 | cfg.remove_empty_blocks(); |
| 2771 | if (do_freq_based_layout()) { |
| 2772 | PhaseBlockLayout layout(cfg); |
| 2773 | } else { |
| 2774 | cfg.set_loop_alignment(); |
| 2775 | } |
| 2776 | cfg.fixup_flow(); |
| 2777 | } |
| 2778 | |
| 2779 | // Apply peephole optimizations |
| 2780 | if( OptoPeephole ) { |
| 2781 | TracePhase tp("peephole", &timers[_t_peephole]); |
| 2782 | PhasePeephole peep( _regalloc, cfg); |
| 2783 | peep.do_transform(); |
| 2784 | } |
| 2785 | |
| 2786 | // Do late expand if CPU requires this. |
| 2787 | if (Matcher::require_postalloc_expand) { |
| 2788 | TracePhase tp("postalloc_expand", &timers[_t_postalloc_expand]); |
| 2789 | cfg.postalloc_expand(_regalloc); |
| 2790 | } |
| 2791 | |
| 2792 | // Convert Nodes to instruction bits in a buffer |
| 2793 | { |
| 2794 | TracePhase tp("output", &timers[_t_output]); |
| 2795 | PhaseOutput output; |
| 2796 | output.Output(); |
| 2797 | if (failing()) return; |
| 2798 | output.install(); |
| 2799 | } |
| 2800 | |
| 2801 | print_method(PHASE_FINAL_CODE); |
| 2802 | |
| 2803 | // He's dead, Jim. |
| 2804 | _cfg = (PhaseCFG*)((intptr_t)0xdeadbeef); |
| 2805 | _regalloc = (PhaseChaitin*)((intptr_t)0xdeadbeef); |
| 2806 | } |
| 2807 | |
| 2808 | //------------------------------Final_Reshape_Counts--------------------------- |
| 2809 | // This class defines counters to help identify when a method |
| 2810 | // may/must be executed using hardware with only 24-bit precision. |
| 2811 | struct Final_Reshape_Counts : public StackObj { |
| 2812 | int _call_count; // count non-inlined 'common' calls |
| 2813 | int _float_count; // count float ops requiring 24-bit precision |
| 2814 | int _double_count; // count double ops requiring more precision |
| 2815 | int _java_call_count; // count non-inlined 'java' calls |
| 2816 | int _inner_loop_count; // count loops which need alignment |
| 2817 | VectorSet _visited; // Visitation flags |
| 2818 | Node_List _tests; // Set of IfNodes & PCTableNodes |
| 2819 | |
| 2820 | Final_Reshape_Counts() : |
| 2821 | _call_count(0), _float_count(0), _double_count(0), |
| 2822 | _java_call_count(0), _inner_loop_count(0) { } |
| 2823 | |
| 2824 | void inc_call_count () { _call_count ++; } |
| 2825 | void inc_float_count () { _float_count ++; } |
| 2826 | void inc_double_count() { _double_count++; } |
| 2827 | void inc_java_call_count() { _java_call_count++; } |
| 2828 | void inc_inner_loop_count() { _inner_loop_count++; } |
| 2829 | |
| 2830 | int get_call_count () const { return _call_count ; } |
| 2831 | int get_float_count () const { return _float_count ; } |
| 2832 | int get_double_count() const { return _double_count; } |
| 2833 | int get_java_call_count() const { return _java_call_count; } |
| 2834 | int get_inner_loop_count() const { return _inner_loop_count; } |
| 2835 | }; |
| 2836 | |
| 2837 | // Eliminate trivially redundant StoreCMs and accumulate their |
| 2838 | // precedence edges. |
| 2839 | void Compile::eliminate_redundant_card_marks(Node* n) { |
| 2840 | assert(n->Opcode() == Op_StoreCM, "expected StoreCM")do { if (!(n->Opcode() == Op_StoreCM)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2840, "assert(" "n->Opcode() == Op_StoreCM" ") failed", "expected StoreCM" ); ::breakpoint(); } } while (0); |
| 2841 | if (n->in(MemNode::Address)->outcnt() > 1) { |
| 2842 | // There are multiple users of the same address so it might be |
| 2843 | // possible to eliminate some of the StoreCMs |
| 2844 | Node* mem = n->in(MemNode::Memory); |
| 2845 | Node* adr = n->in(MemNode::Address); |
| 2846 | Node* val = n->in(MemNode::ValueIn); |
| 2847 | Node* prev = n; |
| 2848 | bool done = false; |
| 2849 | // Walk the chain of StoreCMs eliminating ones that match. As |
| 2850 | // long as it's a chain of single users then the optimization is |
| 2851 | // safe. Eliminating partially redundant StoreCMs would require |
| 2852 | // cloning copies down the other paths. |
| 2853 | while (mem->Opcode() == Op_StoreCM && mem->outcnt() == 1 && !done) { |
| 2854 | if (adr == mem->in(MemNode::Address) && |
| 2855 | val == mem->in(MemNode::ValueIn)) { |
| 2856 | // redundant StoreCM |
| 2857 | if (mem->req() > MemNode::OopStore) { |
| 2858 | // Hasn't been processed by this code yet. |
| 2859 | n->add_prec(mem->in(MemNode::OopStore)); |
| 2860 | } else { |
| 2861 | // Already converted to precedence edge |
| 2862 | for (uint i = mem->req(); i < mem->len(); i++) { |
| 2863 | // Accumulate any precedence edges |
| 2864 | if (mem->in(i) != NULL__null) { |
| 2865 | n->add_prec(mem->in(i)); |
| 2866 | } |
| 2867 | } |
| 2868 | // Everything above this point has been processed. |
| 2869 | done = true; |
| 2870 | } |
| 2871 | // Eliminate the previous StoreCM |
| 2872 | prev->set_req(MemNode::Memory, mem->in(MemNode::Memory)); |
| 2873 | assert(mem->outcnt() == 0, "should be dead")do { if (!(mem->outcnt() == 0)) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2873, "assert(" "mem->outcnt() == 0" ") failed", "should be dead" ); ::breakpoint(); } } while (0); |
| 2874 | mem->disconnect_inputs(this); |
| 2875 | } else { |
| 2876 | prev = mem; |
| 2877 | } |
| 2878 | mem = prev->in(MemNode::Memory); |
| 2879 | } |
| 2880 | } |
| 2881 | } |
| 2882 | |
| 2883 | //------------------------------final_graph_reshaping_impl---------------------- |
| 2884 | // Implement items 1-5 from final_graph_reshaping below. |
| 2885 | void Compile::final_graph_reshaping_impl( Node *n, Final_Reshape_Counts &frc) { |
| 2886 | |
| 2887 | if ( n->outcnt() == 0 ) return; // dead node |
| 2888 | uint nop = n->Opcode(); |
| 2889 | |
| 2890 | // Check for 2-input instruction with "last use" on right input. |
| 2891 | // Swap to left input. Implements item (2). |
| 2892 | if( n->req() == 3 && // two-input instruction |
| 2893 | n->in(1)->outcnt() > 1 && // left use is NOT a last use |
| 2894 | (!n->in(1)->is_Phi() || n->in(1)->in(2) != n) && // it is not data loop |
| 2895 | n->in(2)->outcnt() == 1 &&// right use IS a last use |
| 2896 | !n->in(2)->is_Con() ) { // right use is not a constant |
| 2897 | // Check for commutative opcode |
| 2898 | switch( nop ) { |
| 2899 | case Op_AddI: case Op_AddF: case Op_AddD: case Op_AddL: |
| 2900 | case Op_MaxI: case Op_MaxL: case Op_MaxF: case Op_MaxD: |
| 2901 | case Op_MinI: case Op_MinL: case Op_MinF: case Op_MinD: |
| 2902 | case Op_MulI: case Op_MulF: case Op_MulD: case Op_MulL: |
| 2903 | case Op_AndL: case Op_XorL: case Op_OrL: |
| 2904 | case Op_AndI: case Op_XorI: case Op_OrI: { |
| 2905 | // Move "last use" input to left by swapping inputs |
| 2906 | n->swap_edges(1, 2); |
| 2907 | break; |
| 2908 | } |
| 2909 | default: |
| 2910 | break; |
| 2911 | } |
| 2912 | } |
| 2913 | |
| 2914 | #ifdef ASSERT1 |
| 2915 | if( n->is_Mem() ) { |
| 2916 | int alias_idx = get_alias_index(n->as_Mem()->adr_type()); |
| 2917 | assert( n->in(0) != NULL || alias_idx != Compile::AliasIdxRaw ||do { if (!(n->in(0) != __null || alias_idx != Compile::AliasIdxRaw || n->is_Load() && (n->as_Load()->bottom_type ()->isa_oopptr() || LoadNode::is_immutable_value(n->in( MemNode::Address))))) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2921, "assert(" "n->in(0) != __null || alias_idx != Compile::AliasIdxRaw || n->is_Load() && (n->as_Load()->bottom_type()->isa_oopptr() || LoadNode::is_immutable_value(n->in(MemNode::Address)))" ") failed", "raw memory operations should have control edge" ); ::breakpoint(); } } while (0) |
| 2918 | // oop will be recorded in oop map if load crosses safepointdo { if (!(n->in(0) != __null || alias_idx != Compile::AliasIdxRaw || n->is_Load() && (n->as_Load()->bottom_type ()->isa_oopptr() || LoadNode::is_immutable_value(n->in( MemNode::Address))))) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2921, "assert(" "n->in(0) != __null || alias_idx != Compile::AliasIdxRaw || n->is_Load() && (n->as_Load()->bottom_type()->isa_oopptr() || LoadNode::is_immutable_value(n->in(MemNode::Address)))" ") failed", "raw memory operations should have control edge" ); ::breakpoint(); } } while (0) |
| 2919 | n->is_Load() && (n->as_Load()->bottom_type()->isa_oopptr() ||do { if (!(n->in(0) != __null || alias_idx != Compile::AliasIdxRaw || n->is_Load() && (n->as_Load()->bottom_type ()->isa_oopptr() || LoadNode::is_immutable_value(n->in( MemNode::Address))))) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2921, "assert(" "n->in(0) != __null || alias_idx != Compile::AliasIdxRaw || n->is_Load() && (n->as_Load()->bottom_type()->isa_oopptr() || LoadNode::is_immutable_value(n->in(MemNode::Address)))" ") failed", "raw memory operations should have control edge" ); ::breakpoint(); } } while (0) |
| 2920 | LoadNode::is_immutable_value(n->in(MemNode::Address))),do { if (!(n->in(0) != __null || alias_idx != Compile::AliasIdxRaw || n->is_Load() && (n->as_Load()->bottom_type ()->isa_oopptr() || LoadNode::is_immutable_value(n->in( MemNode::Address))))) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2921, "assert(" "n->in(0) != __null || alias_idx != Compile::AliasIdxRaw || n->is_Load() && (n->as_Load()->bottom_type()->isa_oopptr() || LoadNode::is_immutable_value(n->in(MemNode::Address)))" ") failed", "raw memory operations should have control edge" ); ::breakpoint(); } } while (0) |
| 2921 | "raw memory operations should have control edge")do { if (!(n->in(0) != __null || alias_idx != Compile::AliasIdxRaw || n->is_Load() && (n->as_Load()->bottom_type ()->isa_oopptr() || LoadNode::is_immutable_value(n->in( MemNode::Address))))) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2921, "assert(" "n->in(0) != __null || alias_idx != Compile::AliasIdxRaw || n->is_Load() && (n->as_Load()->bottom_type()->isa_oopptr() || LoadNode::is_immutable_value(n->in(MemNode::Address)))" ") failed", "raw memory operations should have control edge" ); ::breakpoint(); } } while (0); |
| 2922 | } |
| 2923 | if (n->is_MemBar()) { |
| 2924 | MemBarNode* mb = n->as_MemBar(); |
| 2925 | if (mb->trailing_store() || mb->trailing_load_store()) { |
| 2926 | assert(mb->leading_membar()->trailing_membar() == mb, "bad membar pair")do { if (!(mb->leading_membar()->trailing_membar() == mb )) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2926, "assert(" "mb->leading_membar()->trailing_membar() == mb" ") failed", "bad membar pair"); ::breakpoint(); } } while (0 ); |
| 2927 | Node* mem = BarrierSet::barrier_set()->barrier_set_c2()->step_over_gc_barrier(mb->in(MemBarNode::Precedent)); |
| 2928 | assert((mb->trailing_store() && mem->is_Store() && mem->as_Store()->is_release()) ||do { if (!((mb->trailing_store() && mem->is_Store () && mem->as_Store()->is_release()) || (mb-> trailing_load_store() && mem->is_LoadStore()))) { ( *g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2929, "assert(" "(mb->trailing_store() && mem->is_Store() && mem->as_Store()->is_release()) || (mb->trailing_load_store() && mem->is_LoadStore())" ") failed", "missing mem op"); ::breakpoint(); } } while (0) |
| 2929 | (mb->trailing_load_store() && mem->is_LoadStore()), "missing mem op")do { if (!((mb->trailing_store() && mem->is_Store () && mem->as_Store()->is_release()) || (mb-> trailing_load_store() && mem->is_LoadStore()))) { ( *g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2929, "assert(" "(mb->trailing_store() && mem->is_Store() && mem->as_Store()->is_release()) || (mb->trailing_load_store() && mem->is_LoadStore())" ") failed", "missing mem op"); ::breakpoint(); } } while (0); |
| 2930 | } else if (mb->leading()) { |
| 2931 | assert(mb->trailing_membar()->leading_membar() == mb, "bad membar pair")do { if (!(mb->trailing_membar()->leading_membar() == mb )) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 2931, "assert(" "mb->trailing_membar()->leading_membar() == mb" ") failed", "bad membar pair"); ::breakpoint(); } } while (0 ); |
| 2932 | } |
| 2933 | } |
| 2934 | #endif |
| 2935 | // Count FPU ops and common calls, implements item (3) |
| 2936 | bool gc_handled = BarrierSet::barrier_set()->barrier_set_c2()->final_graph_reshaping(this, n, nop); |
| 2937 | if (!gc_handled) { |
| 2938 | final_graph_reshaping_main_switch(n, frc, nop); |
| 2939 | } |
| 2940 | |
| 2941 | // Collect CFG split points |
| 2942 | if (n->is_MultiBranch() && !n->is_RangeCheck()) { |
| 2943 | frc._tests.push(n); |
| 2944 | } |
| 2945 | } |
| 2946 | |
| 2947 | void Compile::final_graph_reshaping_main_switch(Node* n, Final_Reshape_Counts& frc, uint nop) { |
| 2948 | switch( nop ) { |
| 2949 | // Count all float operations that may use FPU |
| 2950 | case Op_AddF: |
| 2951 | case Op_SubF: |
| 2952 | case Op_MulF: |
| 2953 | case Op_DivF: |
| 2954 | case Op_NegF: |
| 2955 | case Op_ModF: |
| 2956 | case Op_ConvI2F: |
| 2957 | case Op_ConF: |
| 2958 | case Op_CmpF: |
| 2959 | case Op_CmpF3: |
| 2960 | case Op_StoreF: |
| 2961 | case Op_LoadF: |
| 2962 | // case Op_ConvL2F: // longs are split into 32-bit halves |
| 2963 | frc.inc_float_count(); |
| 2964 | break; |
| 2965 | |
| 2966 | case Op_ConvF2D: |
| 2967 | case Op_ConvD2F: |
| 2968 | frc.inc_float_count(); |
| 2969 | frc.inc_double_count(); |
| 2970 | break; |
| 2971 | |
| 2972 | // Count all double operations that may use FPU |
| 2973 | case Op_AddD: |
| 2974 | case Op_SubD: |
| 2975 | case Op_MulD: |
| 2976 | case Op_DivD: |
| 2977 | case Op_NegD: |
| 2978 | case Op_ModD: |
| 2979 | case Op_ConvI2D: |
| 2980 | case Op_ConvD2I: |
| 2981 | // case Op_ConvL2D: // handled by leaf call |
| 2982 | // case Op_ConvD2L: // handled by leaf call |
| 2983 | case Op_ConD: |
| 2984 | case Op_CmpD: |
| 2985 | case Op_CmpD3: |
| 2986 | case Op_StoreD: |
| 2987 | case Op_LoadD: |
| 2988 | case Op_LoadD_unaligned: |
| 2989 | frc.inc_double_count(); |
| 2990 | break; |
| 2991 | case Op_Opaque1: // Remove Opaque Nodes before matching |
| 2992 | case Op_Opaque2: // Remove Opaque Nodes before matching |
| 2993 | case Op_Opaque3: |
| 2994 | n->subsume_by(n->in(1), this); |
| 2995 | break; |
| 2996 | case Op_CallStaticJava: |
| 2997 | case Op_CallJava: |
| 2998 | case Op_CallDynamicJava: |
| 2999 | frc.inc_java_call_count(); // Count java call site; |
| 3000 | case Op_CallRuntime: |
| 3001 | case Op_CallLeaf: |
| 3002 | case Op_CallLeafVector: |
| 3003 | case Op_CallNative: |
| 3004 | case Op_CallLeafNoFP: { |
| 3005 | assert (n->is_Call(), "")do { if (!(n->is_Call())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3005, "assert(" "n->is_Call()" ") failed", ""); ::breakpoint (); } } while (0); |
| 3006 | CallNode *call = n->as_Call(); |
| 3007 | // Count call sites where the FP mode bit would have to be flipped. |
| 3008 | // Do not count uncommon runtime calls: |
| 3009 | // uncommon_trap, _complete_monitor_locking, _complete_monitor_unlocking, |
| 3010 | // _new_Java, _new_typeArray, _new_objArray, _rethrow_Java, ... |
| 3011 | if (!call->is_CallStaticJava() || !call->as_CallStaticJava()->_name) { |
| 3012 | frc.inc_call_count(); // Count the call site |
| 3013 | } else { // See if uncommon argument is shared |
| 3014 | Node *n = call->in(TypeFunc::Parms); |
| 3015 | int nop = n->Opcode(); |
| 3016 | // Clone shared simple arguments to uncommon calls, item (1). |
| 3017 | if (n->outcnt() > 1 && |
| 3018 | !n->is_Proj() && |
| 3019 | nop != Op_CreateEx && |
| 3020 | nop != Op_CheckCastPP && |
| 3021 | nop != Op_DecodeN && |
| 3022 | nop != Op_DecodeNKlass && |
| 3023 | !n->is_Mem() && |
| 3024 | !n->is_Phi()) { |
| 3025 | Node *x = n->clone(); |
| 3026 | call->set_req(TypeFunc::Parms, x); |
| 3027 | } |
| 3028 | } |
| 3029 | break; |
| 3030 | } |
| 3031 | |
| 3032 | case Op_StoreCM: |
| 3033 | { |
| 3034 | // Convert OopStore dependence into precedence edge |
| 3035 | Node* prec = n->in(MemNode::OopStore); |
| 3036 | n->del_req(MemNode::OopStore); |
| 3037 | n->add_prec(prec); |
| 3038 | eliminate_redundant_card_marks(n); |
| 3039 | } |
| 3040 | |
| 3041 | // fall through |
| 3042 | |
| 3043 | case Op_StoreB: |
| 3044 | case Op_StoreC: |
| 3045 | case Op_StorePConditional: |
| 3046 | case Op_StoreI: |
| 3047 | case Op_StoreL: |
| 3048 | case Op_StoreIConditional: |
| 3049 | case Op_StoreLConditional: |
| 3050 | case Op_CompareAndSwapB: |
| 3051 | case Op_CompareAndSwapS: |
| 3052 | case Op_CompareAndSwapI: |
| 3053 | case Op_CompareAndSwapL: |
| 3054 | case Op_CompareAndSwapP: |
| 3055 | case Op_CompareAndSwapN: |
| 3056 | case Op_WeakCompareAndSwapB: |
| 3057 | case Op_WeakCompareAndSwapS: |
| 3058 | case Op_WeakCompareAndSwapI: |
| 3059 | case Op_WeakCompareAndSwapL: |
| 3060 | case Op_WeakCompareAndSwapP: |
| 3061 | case Op_WeakCompareAndSwapN: |
| 3062 | case Op_CompareAndExchangeB: |
| 3063 | case Op_CompareAndExchangeS: |
| 3064 | case Op_CompareAndExchangeI: |
| 3065 | case Op_CompareAndExchangeL: |
| 3066 | case Op_CompareAndExchangeP: |
| 3067 | case Op_CompareAndExchangeN: |
| 3068 | case Op_GetAndAddS: |
| 3069 | case Op_GetAndAddB: |
| 3070 | case Op_GetAndAddI: |
| 3071 | case Op_GetAndAddL: |
| 3072 | case Op_GetAndSetS: |
| 3073 | case Op_GetAndSetB: |
| 3074 | case Op_GetAndSetI: |
| 3075 | case Op_GetAndSetL: |
| 3076 | case Op_GetAndSetP: |
| 3077 | case Op_GetAndSetN: |
| 3078 | case Op_StoreP: |
| 3079 | case Op_StoreN: |
| 3080 | case Op_StoreNKlass: |
| 3081 | case Op_LoadB: |
| 3082 | case Op_LoadUB: |
| 3083 | case Op_LoadUS: |
| 3084 | case Op_LoadI: |
| 3085 | case Op_LoadKlass: |
| 3086 | case Op_LoadNKlass: |
| 3087 | case Op_LoadL: |
| 3088 | case Op_LoadL_unaligned: |
| 3089 | case Op_LoadPLocked: |
| 3090 | case Op_LoadP: |
| 3091 | case Op_LoadN: |
| 3092 | case Op_LoadRange: |
| 3093 | case Op_LoadS: |
| 3094 | break; |
| 3095 | |
| 3096 | case Op_AddP: { // Assert sane base pointers |
| 3097 | Node *addp = n->in(AddPNode::Address); |
| 3098 | assert( !addp->is_AddP() ||do { if (!(!addp->is_AddP() || addp->in(AddPNode::Base) ->is_top() || addp->in(AddPNode::Base) == n->in(AddPNode ::Base))) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3101, "assert(" "!addp->is_AddP() || addp->in(AddPNode::Base)->is_top() || addp->in(AddPNode::Base) == n->in(AddPNode::Base)" ") failed", "Base pointers must match (addp %u)", addp->_idx ); ::breakpoint(); } } while (0) |
| 3099 | addp->in(AddPNode::Base)->is_top() || // Top OK for allocationdo { if (!(!addp->is_AddP() || addp->in(AddPNode::Base) ->is_top() || addp->in(AddPNode::Base) == n->in(AddPNode ::Base))) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3101, "assert(" "!addp->is_AddP() || addp->in(AddPNode::Base)->is_top() || addp->in(AddPNode::Base) == n->in(AddPNode::Base)" ") failed", "Base pointers must match (addp %u)", addp->_idx ); ::breakpoint(); } } while (0) |
| 3100 | addp->in(AddPNode::Base) == n->in(AddPNode::Base),do { if (!(!addp->is_AddP() || addp->in(AddPNode::Base) ->is_top() || addp->in(AddPNode::Base) == n->in(AddPNode ::Base))) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3101, "assert(" "!addp->is_AddP() || addp->in(AddPNode::Base)->is_top() || addp->in(AddPNode::Base) == n->in(AddPNode::Base)" ") failed", "Base pointers must match (addp %u)", addp->_idx ); ::breakpoint(); } } while (0) |
| 3101 | "Base pointers must match (addp %u)", addp->_idx )do { if (!(!addp->is_AddP() || addp->in(AddPNode::Base) ->is_top() || addp->in(AddPNode::Base) == n->in(AddPNode ::Base))) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3101, "assert(" "!addp->is_AddP() || addp->in(AddPNode::Base)->is_top() || addp->in(AddPNode::Base) == n->in(AddPNode::Base)" ") failed", "Base pointers must match (addp %u)", addp->_idx ); ::breakpoint(); } } while (0); |
| 3102 | #ifdef _LP641 |
| 3103 | if ((UseCompressedOops || UseCompressedClassPointers) && |
| 3104 | addp->Opcode() == Op_ConP && |
| 3105 | addp == n->in(AddPNode::Base) && |
| 3106 | n->in(AddPNode::Offset)->is_Con()) { |
| 3107 | // If the transformation of ConP to ConN+DecodeN is beneficial depends |
| 3108 | // on the platform and on the compressed oops mode. |
| 3109 | // Use addressing with narrow klass to load with offset on x86. |
| 3110 | // Some platforms can use the constant pool to load ConP. |
| 3111 | // Do this transformation here since IGVN will convert ConN back to ConP. |
| 3112 | const Type* t = addp->bottom_type(); |
| 3113 | bool is_oop = t->isa_oopptr() != NULL__null; |
| 3114 | bool is_klass = t->isa_klassptr() != NULL__null; |
| 3115 | |
| 3116 | if ((is_oop && Matcher::const_oop_prefer_decode() ) || |
| 3117 | (is_klass && Matcher::const_klass_prefer_decode())) { |
| 3118 | Node* nn = NULL__null; |
| 3119 | |
| 3120 | int op = is_oop ? Op_ConN : Op_ConNKlass; |
| 3121 | |
| 3122 | // Look for existing ConN node of the same exact type. |
| 3123 | Node* r = root(); |
| 3124 | uint cnt = r->outcnt(); |
| 3125 | for (uint i = 0; i < cnt; i++) { |
| 3126 | Node* m = r->raw_out(i); |
| 3127 | if (m!= NULL__null && m->Opcode() == op && |
| 3128 | m->bottom_type()->make_ptr() == t) { |
| 3129 | nn = m; |
| 3130 | break; |
| 3131 | } |
| 3132 | } |
| 3133 | if (nn != NULL__null) { |
| 3134 | // Decode a narrow oop to match address |
| 3135 | // [R12 + narrow_oop_reg<<3 + offset] |
| 3136 | if (is_oop) { |
| 3137 | nn = new DecodeNNode(nn, t); |
| 3138 | } else { |
| 3139 | nn = new DecodeNKlassNode(nn, t); |
| 3140 | } |
| 3141 | // Check for succeeding AddP which uses the same Base. |
| 3142 | // Otherwise we will run into the assertion above when visiting that guy. |
| 3143 | for (uint i = 0; i < n->outcnt(); ++i) { |
| 3144 | Node *out_i = n->raw_out(i); |
| 3145 | if (out_i && out_i->is_AddP() && out_i->in(AddPNode::Base) == addp) { |
| 3146 | out_i->set_req(AddPNode::Base, nn); |
| 3147 | #ifdef ASSERT1 |
| 3148 | for (uint j = 0; j < out_i->outcnt(); ++j) { |
| 3149 | Node *out_j = out_i->raw_out(j); |
| 3150 | assert(out_j == NULL || !out_j->is_AddP() || out_j->in(AddPNode::Base) != addp,do { if (!(out_j == __null || !out_j->is_AddP() || out_j-> in(AddPNode::Base) != addp)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3151, "assert(" "out_j == __null || !out_j->is_AddP() || out_j->in(AddPNode::Base) != addp" ") failed", "more than 2 AddP nodes in a chain (out_j %u)", out_j ->_idx); ::breakpoint(); } } while (0) |
| 3151 | "more than 2 AddP nodes in a chain (out_j %u)", out_j->_idx)do { if (!(out_j == __null || !out_j->is_AddP() || out_j-> in(AddPNode::Base) != addp)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3151, "assert(" "out_j == __null || !out_j->is_AddP() || out_j->in(AddPNode::Base) != addp" ") failed", "more than 2 AddP nodes in a chain (out_j %u)", out_j ->_idx); ::breakpoint(); } } while (0); |
| 3152 | } |
| 3153 | #endif |
| 3154 | } |
| 3155 | } |
| 3156 | n->set_req(AddPNode::Base, nn); |
| 3157 | n->set_req(AddPNode::Address, nn); |
| 3158 | if (addp->outcnt() == 0) { |
| 3159 | addp->disconnect_inputs(this); |
| 3160 | } |
| 3161 | } |
| 3162 | } |
| 3163 | } |
| 3164 | #endif |
| 3165 | break; |
| 3166 | } |
| 3167 | |
| 3168 | case Op_CastPP: { |
| 3169 | // Remove CastPP nodes to gain more freedom during scheduling but |
| 3170 | // keep the dependency they encode as control or precedence edges |
| 3171 | // (if control is set already) on memory operations. Some CastPP |
| 3172 | // nodes don't have a control (don't carry a dependency): skip |
| 3173 | // those. |
| 3174 | if (n->in(0) != NULL__null) { |
| 3175 | ResourceMark rm; |
| 3176 | Unique_Node_List wq; |
| 3177 | wq.push(n); |
| 3178 | for (uint next = 0; next < wq.size(); ++next) { |
| 3179 | Node *m = wq.at(next); |
| 3180 | for (DUIterator_Fast imax, i = m->fast_outs(imax); i < imax; i++) { |
| 3181 | Node* use = m->fast_out(i); |
| 3182 | if (use->is_Mem() || use->is_EncodeNarrowPtr()) { |
| 3183 | use->ensure_control_or_add_prec(n->in(0)); |
| 3184 | } else { |
| 3185 | switch(use->Opcode()) { |
| 3186 | case Op_AddP: |
| 3187 | case Op_DecodeN: |
| 3188 | case Op_DecodeNKlass: |
| 3189 | case Op_CheckCastPP: |
| 3190 | case Op_CastPP: |
| 3191 | wq.push(use); |
| 3192 | break; |
| 3193 | } |
| 3194 | } |
| 3195 | } |
| 3196 | } |
| 3197 | } |
| 3198 | const bool is_LP64 = LP64_ONLY(true)true NOT_LP64(false); |
| 3199 | if (is_LP64 && n->in(1)->is_DecodeN() && Matcher::gen_narrow_oop_implicit_null_checks()) { |
| 3200 | Node* in1 = n->in(1); |
| 3201 | const Type* t = n->bottom_type(); |
| 3202 | Node* new_in1 = in1->clone(); |
| 3203 | new_in1->as_DecodeN()->set_type(t); |
| 3204 | |
| 3205 | if (!Matcher::narrow_oop_use_complex_address()) { |
| 3206 | // |
| 3207 | // x86, ARM and friends can handle 2 adds in addressing mode |
| 3208 | // and Matcher can fold a DecodeN node into address by using |
| 3209 | // a narrow oop directly and do implicit NULL check in address: |
| 3210 | // |
| 3211 | // [R12 + narrow_oop_reg<<3 + offset] |
| 3212 | // NullCheck narrow_oop_reg |
| 3213 | // |
| 3214 | // On other platforms (Sparc) we have to keep new DecodeN node and |
| 3215 | // use it to do implicit NULL check in address: |
| 3216 | // |
| 3217 | // decode_not_null narrow_oop_reg, base_reg |
| 3218 | // [base_reg + offset] |
| 3219 | // NullCheck base_reg |
| 3220 | // |
| 3221 | // Pin the new DecodeN node to non-null path on these platform (Sparc) |
| 3222 | // to keep the information to which NULL check the new DecodeN node |
| 3223 | // corresponds to use it as value in implicit_null_check(). |
| 3224 | // |
| 3225 | new_in1->set_req(0, n->in(0)); |
| 3226 | } |
| 3227 | |
| 3228 | n->subsume_by(new_in1, this); |
| 3229 | if (in1->outcnt() == 0) { |
| 3230 | in1->disconnect_inputs(this); |
| 3231 | } |
| 3232 | } else { |
| 3233 | n->subsume_by(n->in(1), this); |
| 3234 | if (n->outcnt() == 0) { |
| 3235 | n->disconnect_inputs(this); |
| 3236 | } |
| 3237 | } |
| 3238 | break; |
| 3239 | } |
| 3240 | #ifdef _LP641 |
| 3241 | case Op_CmpP: |
| 3242 | // Do this transformation here to preserve CmpPNode::sub() and |
| 3243 | // other TypePtr related Ideal optimizations (for example, ptr nullness). |
| 3244 | if (n->in(1)->is_DecodeNarrowPtr() || n->in(2)->is_DecodeNarrowPtr()) { |
| 3245 | Node* in1 = n->in(1); |
| 3246 | Node* in2 = n->in(2); |
| 3247 | if (!in1->is_DecodeNarrowPtr()) { |
| 3248 | in2 = in1; |
| 3249 | in1 = n->in(2); |
| 3250 | } |
| 3251 | assert(in1->is_DecodeNarrowPtr(), "sanity")do { if (!(in1->is_DecodeNarrowPtr())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3251, "assert(" "in1->is_DecodeNarrowPtr()" ") failed", "sanity" ); ::breakpoint(); } } while (0); |
| 3252 | |
| 3253 | Node* new_in2 = NULL__null; |
| 3254 | if (in2->is_DecodeNarrowPtr()) { |
| 3255 | assert(in2->Opcode() == in1->Opcode(), "must be same node type")do { if (!(in2->Opcode() == in1->Opcode())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3255, "assert(" "in2->Opcode() == in1->Opcode()" ") failed" , "must be same node type"); ::breakpoint(); } } while (0); |
| 3256 | new_in2 = in2->in(1); |
| 3257 | } else if (in2->Opcode() == Op_ConP) { |
| 3258 | const Type* t = in2->bottom_type(); |
| 3259 | if (t == TypePtr::NULL_PTR) { |
| 3260 | assert(in1->is_DecodeN(), "compare klass to null?")do { if (!(in1->is_DecodeN())) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3260, "assert(" "in1->is_DecodeN()" ") failed", "compare klass to null?" ); ::breakpoint(); } } while (0); |
| 3261 | // Don't convert CmpP null check into CmpN if compressed |
| 3262 | // oops implicit null check is not generated. |
| 3263 | // This will allow to generate normal oop implicit null check. |
| 3264 | if (Matcher::gen_narrow_oop_implicit_null_checks()) |
| 3265 | new_in2 = ConNode::make(TypeNarrowOop::NULL_PTR); |
| 3266 | // |
| 3267 | // This transformation together with CastPP transformation above |
| 3268 | // will generated code for implicit NULL checks for compressed oops. |
| 3269 | // |
| 3270 | // The original code after Optimize() |
| 3271 | // |
| 3272 | // LoadN memory, narrow_oop_reg |
| 3273 | // decode narrow_oop_reg, base_reg |
| 3274 | // CmpP base_reg, NULL |
| 3275 | // CastPP base_reg // NotNull |
| 3276 | // Load [base_reg + offset], val_reg |
| 3277 | // |
| 3278 | // after these transformations will be |
| 3279 | // |
| 3280 | // LoadN memory, narrow_oop_reg |
| 3281 | // CmpN narrow_oop_reg, NULL |
| 3282 | // decode_not_null narrow_oop_reg, base_reg |
| 3283 | // Load [base_reg + offset], val_reg |
| 3284 | // |
| 3285 | // and the uncommon path (== NULL) will use narrow_oop_reg directly |
| 3286 | // since narrow oops can be used in debug info now (see the code in |
| 3287 | // final_graph_reshaping_walk()). |
| 3288 | // |
| 3289 | // At the end the code will be matched to |
| 3290 | // on x86: |
| 3291 | // |
| 3292 | // Load_narrow_oop memory, narrow_oop_reg |
| 3293 | // Load [R12 + narrow_oop_reg<<3 + offset], val_reg |
| 3294 | // NullCheck narrow_oop_reg |
| 3295 | // |
| 3296 | // and on sparc: |
| 3297 | // |
| 3298 | // Load_narrow_oop memory, narrow_oop_reg |
| 3299 | // decode_not_null narrow_oop_reg, base_reg |
| 3300 | // Load [base_reg + offset], val_reg |
| 3301 | // NullCheck base_reg |
| 3302 | // |
| 3303 | } else if (t->isa_oopptr()) { |
| 3304 | new_in2 = ConNode::make(t->make_narrowoop()); |
| 3305 | } else if (t->isa_klassptr()) { |
| 3306 | new_in2 = ConNode::make(t->make_narrowklass()); |
| 3307 | } |
| 3308 | } |
| 3309 | if (new_in2 != NULL__null) { |
| 3310 | Node* cmpN = new CmpNNode(in1->in(1), new_in2); |
| 3311 | n->subsume_by(cmpN, this); |
| 3312 | if (in1->outcnt() == 0) { |
| 3313 | in1->disconnect_inputs(this); |
| 3314 | } |
| 3315 | if (in2->outcnt() == 0) { |
| 3316 | in2->disconnect_inputs(this); |
| 3317 | } |
| 3318 | } |
| 3319 | } |
| 3320 | break; |
| 3321 | |
| 3322 | case Op_DecodeN: |
| 3323 | case Op_DecodeNKlass: |
| 3324 | assert(!n->in(1)->is_EncodeNarrowPtr(), "should be optimized out")do { if (!(!n->in(1)->is_EncodeNarrowPtr())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3324, "assert(" "!n->in(1)->is_EncodeNarrowPtr()" ") failed" , "should be optimized out"); ::breakpoint(); } } while (0); |
| 3325 | // DecodeN could be pinned when it can't be fold into |
| 3326 | // an address expression, see the code for Op_CastPP above. |
| 3327 | assert(n->in(0) == NULL || (UseCompressedOops && !Matcher::narrow_oop_use_complex_address()), "no control")do { if (!(n->in(0) == __null || (UseCompressedOops && !Matcher::narrow_oop_use_complex_address()))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3327, "assert(" "n->in(0) == __null || (UseCompressedOops && !Matcher::narrow_oop_use_complex_address())" ") failed", "no control"); ::breakpoint(); } } while (0); |
| 3328 | break; |
| 3329 | |
| 3330 | case Op_EncodeP: |
| 3331 | case Op_EncodePKlass: { |
| 3332 | Node* in1 = n->in(1); |
| 3333 | if (in1->is_DecodeNarrowPtr()) { |
| 3334 | n->subsume_by(in1->in(1), this); |
| 3335 | } else if (in1->Opcode() == Op_ConP) { |
| 3336 | const Type* t = in1->bottom_type(); |
| 3337 | if (t == TypePtr::NULL_PTR) { |
| 3338 | assert(t->isa_oopptr(), "null klass?")do { if (!(t->isa_oopptr())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3338, "assert(" "t->isa_oopptr()" ") failed", "null klass?" ); ::breakpoint(); } } while (0); |
| 3339 | n->subsume_by(ConNode::make(TypeNarrowOop::NULL_PTR), this); |
| 3340 | } else if (t->isa_oopptr()) { |
| 3341 | n->subsume_by(ConNode::make(t->make_narrowoop()), this); |
| 3342 | } else if (t->isa_klassptr()) { |
| 3343 | n->subsume_by(ConNode::make(t->make_narrowklass()), this); |
| 3344 | } |
| 3345 | } |
| 3346 | if (in1->outcnt() == 0) { |
| 3347 | in1->disconnect_inputs(this); |
| 3348 | } |
| 3349 | break; |
| 3350 | } |
| 3351 | |
| 3352 | case Op_Proj: { |
| 3353 | if (OptimizeStringConcat || IncrementalInline) { |
| 3354 | ProjNode* proj = n->as_Proj(); |
| 3355 | if (proj->_is_io_use) { |
| 3356 | assert(proj->_con == TypeFunc::I_O || proj->_con == TypeFunc::Memory, "")do { if (!(proj->_con == TypeFunc::I_O || proj->_con == TypeFunc::Memory)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3356, "assert(" "proj->_con == TypeFunc::I_O || proj->_con == TypeFunc::Memory" ") failed", ""); ::breakpoint(); } } while (0); |
| 3357 | // Separate projections were used for the exception path which |
| 3358 | // are normally removed by a late inline. If it wasn't inlined |
| 3359 | // then they will hang around and should just be replaced with |
| 3360 | // the original one. Merge them. |
| 3361 | Node* non_io_proj = proj->in(0)->as_Multi()->proj_out_or_null(proj->_con, false /*is_io_use*/); |
| 3362 | if (non_io_proj != NULL__null) { |
| 3363 | proj->subsume_by(non_io_proj , this); |
| 3364 | } |
| 3365 | } |
| 3366 | } |
| 3367 | break; |
| 3368 | } |
| 3369 | |
| 3370 | case Op_Phi: |
| 3371 | if (n->as_Phi()->bottom_type()->isa_narrowoop() || n->as_Phi()->bottom_type()->isa_narrowklass()) { |
| 3372 | // The EncodeP optimization may create Phi with the same edges |
| 3373 | // for all paths. It is not handled well by Register Allocator. |
| 3374 | Node* unique_in = n->in(1); |
| 3375 | assert(unique_in != NULL, "")do { if (!(unique_in != __null)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3375, "assert(" "unique_in != __null" ") failed", ""); ::breakpoint (); } } while (0); |
| 3376 | uint cnt = n->req(); |
| 3377 | for (uint i = 2; i < cnt; i++) { |
| 3378 | Node* m = n->in(i); |
| 3379 | assert(m != NULL, "")do { if (!(m != __null)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3379, "assert(" "m != __null" ") failed", ""); ::breakpoint (); } } while (0); |
| 3380 | if (unique_in != m) |
| 3381 | unique_in = NULL__null; |
| 3382 | } |
| 3383 | if (unique_in != NULL__null) { |
| 3384 | n->subsume_by(unique_in, this); |
| 3385 | } |
| 3386 | } |
| 3387 | break; |
| 3388 | |
| 3389 | #endif |
| 3390 | |
| 3391 | #ifdef ASSERT1 |
| 3392 | case Op_CastII: |
| 3393 | // Verify that all range check dependent CastII nodes were removed. |
| 3394 | if (n->isa_CastII()->has_range_check()) { |
| 3395 | n->dump(3); |
| 3396 | assert(false, "Range check dependent CastII node was not removed")do { if (!(false)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3396, "assert(" "false" ") failed", "Range check dependent CastII node was not removed" ); ::breakpoint(); } } while (0); |
| 3397 | } |
| 3398 | break; |
| 3399 | #endif |
| 3400 | |
| 3401 | case Op_ModI: |
| 3402 | if (UseDivMod) { |
| 3403 | // Check if a%b and a/b both exist |
| 3404 | Node* d = n->find_similar(Op_DivI); |
| 3405 | if (d) { |
| 3406 | // Replace them with a fused divmod if supported |
| 3407 | if (Matcher::has_match_rule(Op_DivModI)) { |
| 3408 | DivModINode* divmod = DivModINode::make(n); |
| 3409 | d->subsume_by(divmod->div_proj(), this); |
| 3410 | n->subsume_by(divmod->mod_proj(), this); |
| 3411 | } else { |
| 3412 | // replace a%b with a-((a/b)*b) |
| 3413 | Node* mult = new MulINode(d, d->in(2)); |
| 3414 | Node* sub = new SubINode(d->in(1), mult); |
| 3415 | n->subsume_by(sub, this); |
| 3416 | } |
| 3417 | } |
| 3418 | } |
| 3419 | break; |
| 3420 | |
| 3421 | case Op_ModL: |
| 3422 | if (UseDivMod) { |
| 3423 | // Check if a%b and a/b both exist |
| 3424 | Node* d = n->find_similar(Op_DivL); |
| 3425 | if (d) { |
| 3426 | // Replace them with a fused divmod if supported |
| 3427 | if (Matcher::has_match_rule(Op_DivModL)) { |
| 3428 | DivModLNode* divmod = DivModLNode::make(n); |
| 3429 | d->subsume_by(divmod->div_proj(), this); |
| 3430 | n->subsume_by(divmod->mod_proj(), this); |
| 3431 | } else { |
| 3432 | // replace a%b with a-((a/b)*b) |
| 3433 | Node* mult = new MulLNode(d, d->in(2)); |
| 3434 | Node* sub = new SubLNode(d->in(1), mult); |
| 3435 | n->subsume_by(sub, this); |
| 3436 | } |
| 3437 | } |
| 3438 | } |
| 3439 | break; |
| 3440 | |
| 3441 | case Op_LoadVector: |
| 3442 | case Op_StoreVector: |
| 3443 | case Op_LoadVectorGather: |
| 3444 | case Op_StoreVectorScatter: |
| 3445 | case Op_LoadVectorGatherMasked: |
| 3446 | case Op_StoreVectorScatterMasked: |
| 3447 | case Op_VectorCmpMasked: |
| 3448 | case Op_VectorMaskGen: |
| 3449 | case Op_LoadVectorMasked: |
| 3450 | case Op_StoreVectorMasked: |
| 3451 | break; |
| 3452 | |
| 3453 | case Op_AddReductionVI: |
| 3454 | case Op_AddReductionVL: |
| 3455 | case Op_AddReductionVF: |
| 3456 | case Op_AddReductionVD: |
| 3457 | case Op_MulReductionVI: |
| 3458 | case Op_MulReductionVL: |
| 3459 | case Op_MulReductionVF: |
| 3460 | case Op_MulReductionVD: |
| 3461 | case Op_MinReductionV: |
| 3462 | case Op_MaxReductionV: |
| 3463 | case Op_AndReductionV: |
| 3464 | case Op_OrReductionV: |
| 3465 | case Op_XorReductionV: |
| 3466 | break; |
| 3467 | |
| 3468 | case Op_PackB: |
| 3469 | case Op_PackS: |
| 3470 | case Op_PackI: |
| 3471 | case Op_PackF: |
| 3472 | case Op_PackL: |
| 3473 | case Op_PackD: |
| 3474 | if (n->req()-1 > 2) { |
| 3475 | // Replace many operand PackNodes with a binary tree for matching |
| 3476 | PackNode* p = (PackNode*) n; |
| 3477 | Node* btp = p->binary_tree_pack(1, n->req()); |
| 3478 | n->subsume_by(btp, this); |
| 3479 | } |
| 3480 | break; |
| 3481 | case Op_Loop: |
| 3482 | assert(!n->as_Loop()->is_loop_nest_inner_loop() || _loop_opts_cnt == 0, "should have been turned into a counted loop")do { if (!(!n->as_Loop()->is_loop_nest_inner_loop() || _loop_opts_cnt == 0)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3482, "assert(" "!n->as_Loop()->is_loop_nest_inner_loop() || _loop_opts_cnt == 0" ") failed", "should have been turned into a counted loop"); :: breakpoint(); } } while (0); |
| 3483 | case Op_CountedLoop: |
| 3484 | case Op_LongCountedLoop: |
| 3485 | case Op_OuterStripMinedLoop: |
| 3486 | if (n->as_Loop()->is_inner_loop()) { |
| 3487 | frc.inc_inner_loop_count(); |
| 3488 | } |
| 3489 | n->as_Loop()->verify_strip_mined(0); |
| 3490 | break; |
| 3491 | case Op_LShiftI: |
| 3492 | case Op_RShiftI: |
| 3493 | case Op_URShiftI: |
| 3494 | case Op_LShiftL: |
| 3495 | case Op_RShiftL: |
| 3496 | case Op_URShiftL: |
| 3497 | if (Matcher::need_masked_shift_count) { |
| 3498 | // The cpu's shift instructions don't restrict the count to the |
| 3499 | // lower 5/6 bits. We need to do the masking ourselves. |
| 3500 | Node* in2 = n->in(2); |
| 3501 | juint mask = (n->bottom_type() == TypeInt::INT) ? (BitsPerInt - 1) : (BitsPerLong - 1); |
| 3502 | const TypeInt* t = in2->find_int_type(); |
| 3503 | if (t != NULL__null && t->is_con()) { |
| 3504 | juint shift = t->get_con(); |
| 3505 | if (shift > mask) { // Unsigned cmp |
| 3506 | n->set_req(2, ConNode::make(TypeInt::make(shift & mask))); |
| 3507 | } |
| 3508 | } else { |
| 3509 | if (t == NULL__null || t->_lo < 0 || t->_hi > (int)mask) { |
| 3510 | Node* shift = new AndINode(in2, ConNode::make(TypeInt::make(mask))); |
| 3511 | n->set_req(2, shift); |
| 3512 | } |
| 3513 | } |
| 3514 | if (in2->outcnt() == 0) { // Remove dead node |
| 3515 | in2->disconnect_inputs(this); |
| 3516 | } |
| 3517 | } |
| 3518 | break; |
| 3519 | case Op_MemBarStoreStore: |
| 3520 | case Op_MemBarRelease: |
| 3521 | // Break the link with AllocateNode: it is no longer useful and |
| 3522 | // confuses register allocation. |
| 3523 | if (n->req() > MemBarNode::Precedent) { |
| 3524 | n->set_req(MemBarNode::Precedent, top()); |
| 3525 | } |
| 3526 | break; |
| 3527 | case Op_MemBarAcquire: { |
| 3528 | if (n->as_MemBar()->trailing_load() && n->req() > MemBarNode::Precedent) { |
| 3529 | // At parse time, the trailing MemBarAcquire for a volatile load |
| 3530 | // is created with an edge to the load. After optimizations, |
| 3531 | // that input may be a chain of Phis. If those phis have no |
| 3532 | // other use, then the MemBarAcquire keeps them alive and |
| 3533 | // register allocation can be confused. |
| 3534 | ResourceMark rm; |
| 3535 | Unique_Node_List wq; |
| 3536 | wq.push(n->in(MemBarNode::Precedent)); |
| 3537 | n->set_req(MemBarNode::Precedent, top()); |
| 3538 | while (wq.size() > 0) { |
| 3539 | Node* m = wq.pop(); |
| 3540 | if (m->outcnt() == 0) { |
| 3541 | for (uint j = 0; j < m->req(); j++) { |
| 3542 | Node* in = m->in(j); |
| 3543 | if (in != NULL__null) { |
| 3544 | wq.push(in); |
| 3545 | } |
| 3546 | } |
| 3547 | m->disconnect_inputs(this); |
| 3548 | } |
| 3549 | } |
| 3550 | } |
| 3551 | break; |
| 3552 | } |
| 3553 | case Op_Blackhole: |
| 3554 | break; |
| 3555 | case Op_RangeCheck: { |
| 3556 | RangeCheckNode* rc = n->as_RangeCheck(); |
| 3557 | Node* iff = new IfNode(rc->in(0), rc->in(1), rc->_prob, rc->_fcnt); |
| 3558 | n->subsume_by(iff, this); |
| 3559 | frc._tests.push(iff); |
| 3560 | break; |
| 3561 | } |
| 3562 | case Op_ConvI2L: { |
| 3563 | if (!Matcher::convi2l_type_required) { |
| 3564 | // Code generation on some platforms doesn't need accurate |
| 3565 | // ConvI2L types. Widening the type can help remove redundant |
| 3566 | // address computations. |
| 3567 | n->as_Type()->set_type(TypeLong::INT); |
| 3568 | ResourceMark rm; |
| 3569 | Unique_Node_List wq; |
| 3570 | wq.push(n); |
| 3571 | for (uint next = 0; next < wq.size(); next++) { |
| 3572 | Node *m = wq.at(next); |
| 3573 | |
| 3574 | for(;;) { |
| 3575 | // Loop over all nodes with identical inputs edges as m |
| 3576 | Node* k = m->find_similar(m->Opcode()); |
| 3577 | if (k == NULL__null) { |
| 3578 | break; |
| 3579 | } |
| 3580 | // Push their uses so we get a chance to remove node made |
| 3581 | // redundant |
| 3582 | for (DUIterator_Fast imax, i = k->fast_outs(imax); i < imax; i++) { |
| 3583 | Node* u = k->fast_out(i); |
| 3584 | if (u->Opcode() == Op_LShiftL || |
| 3585 | u->Opcode() == Op_AddL || |
| 3586 | u->Opcode() == Op_SubL || |
| 3587 | u->Opcode() == Op_AddP) { |
| 3588 | wq.push(u); |
| 3589 | } |
| 3590 | } |
| 3591 | // Replace all nodes with identical edges as m with m |
| 3592 | k->subsume_by(m, this); |
| 3593 | } |
| 3594 | } |
| 3595 | } |
| 3596 | break; |
| 3597 | } |
| 3598 | case Op_CmpUL: { |
| 3599 | if (!Matcher::has_match_rule(Op_CmpUL)) { |
| 3600 | // No support for unsigned long comparisons |
| 3601 | ConINode* sign_pos = new ConINode(TypeInt::make(BitsPerLong - 1)); |
| 3602 | Node* sign_bit_mask = new RShiftLNode(n->in(1), sign_pos); |
| 3603 | Node* orl = new OrLNode(n->in(1), sign_bit_mask); |
| 3604 | ConLNode* remove_sign_mask = new ConLNode(TypeLong::make(max_jlong)); |
| 3605 | Node* andl = new AndLNode(orl, remove_sign_mask); |
| 3606 | Node* cmp = new CmpLNode(andl, n->in(2)); |
| 3607 | n->subsume_by(cmp, this); |
| 3608 | } |
| 3609 | break; |
| 3610 | } |
| 3611 | default: |
| 3612 | assert(!n->is_Call(), "")do { if (!(!n->is_Call())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3612, "assert(" "!n->is_Call()" ") failed", ""); ::breakpoint (); } } while (0); |
| 3613 | assert(!n->is_Mem(), "")do { if (!(!n->is_Mem())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3613, "assert(" "!n->is_Mem()" ") failed", ""); ::breakpoint (); } } while (0); |
| 3614 | assert(nop != Op_ProfileBoolean, "should be eliminated during IGVN")do { if (!(nop != Op_ProfileBoolean)) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3614, "assert(" "nop != Op_ProfileBoolean" ") failed", "should be eliminated during IGVN" ); ::breakpoint(); } } while (0); |
| 3615 | break; |
| 3616 | } |
| 3617 | } |
| 3618 | |
| 3619 | //------------------------------final_graph_reshaping_walk--------------------- |
| 3620 | // Replacing Opaque nodes with their input in final_graph_reshaping_impl(), |
| 3621 | // requires that the walk visits a node's inputs before visiting the node. |
| 3622 | void Compile::final_graph_reshaping_walk( Node_Stack &nstack, Node *root, Final_Reshape_Counts &frc ) { |
| 3623 | Unique_Node_List sfpt; |
| 3624 | |
| 3625 | frc._visited.set(root->_idx); // first, mark node as visited |
| 3626 | uint cnt = root->req(); |
| 3627 | Node *n = root; |
| 3628 | uint i = 0; |
| 3629 | while (true) { |
| 3630 | if (i < cnt) { |
| 3631 | // Place all non-visited non-null inputs onto stack |
| 3632 | Node* m = n->in(i); |
| 3633 | ++i; |
| 3634 | if (m != NULL__null && !frc._visited.test_set(m->_idx)) { |
| 3635 | if (m->is_SafePoint() && m->as_SafePoint()->jvms() != NULL__null) { |
| 3636 | // compute worst case interpreter size in case of a deoptimization |
| 3637 | update_interpreter_frame_size(m->as_SafePoint()->jvms()->interpreter_frame_size()); |
| 3638 | |
| 3639 | sfpt.push(m); |
| 3640 | } |
| 3641 | cnt = m->req(); |
| 3642 | nstack.push(n, i); // put on stack parent and next input's index |
| 3643 | n = m; |
| 3644 | i = 0; |
| 3645 | } |
| 3646 | } else { |
| 3647 | // Now do post-visit work |
| 3648 | final_graph_reshaping_impl( n, frc ); |
| 3649 | if (nstack.is_empty()) |
| 3650 | break; // finished |
| 3651 | n = nstack.node(); // Get node from stack |
| 3652 | cnt = n->req(); |
| 3653 | i = nstack.index(); |
| 3654 | nstack.pop(); // Shift to the next node on stack |
| 3655 | } |
| 3656 | } |
| 3657 | |
| 3658 | // Skip next transformation if compressed oops are not used. |
| 3659 | if ((UseCompressedOops && !Matcher::gen_narrow_oop_implicit_null_checks()) || |
| 3660 | (!UseCompressedOops && !UseCompressedClassPointers)) |
| 3661 | return; |
| 3662 | |
| 3663 | // Go over safepoints nodes to skip DecodeN/DecodeNKlass nodes for debug edges. |
| 3664 | // It could be done for an uncommon traps or any safepoints/calls |
| 3665 | // if the DecodeN/DecodeNKlass node is referenced only in a debug info. |
| 3666 | while (sfpt.size() > 0) { |
| 3667 | n = sfpt.pop(); |
| 3668 | JVMState *jvms = n->as_SafePoint()->jvms(); |
| 3669 | assert(jvms != NULL, "sanity")do { if (!(jvms != __null)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3669, "assert(" "jvms != __null" ") failed", "sanity"); ::breakpoint (); } } while (0); |
| 3670 | int start = jvms->debug_start(); |
| 3671 | int end = n->req(); |
| 3672 | bool is_uncommon = (n->is_CallStaticJava() && |
| 3673 | n->as_CallStaticJava()->uncommon_trap_request() != 0); |
| 3674 | for (int j = start; j < end; j++) { |
| 3675 | Node* in = n->in(j); |
| 3676 | if (in->is_DecodeNarrowPtr()) { |
| 3677 | bool safe_to_skip = true; |
| 3678 | if (!is_uncommon ) { |
| 3679 | // Is it safe to skip? |
| 3680 | for (uint i = 0; i < in->outcnt(); i++) { |
| 3681 | Node* u = in->raw_out(i); |
| 3682 | if (!u->is_SafePoint() || |
| 3683 | (u->is_Call() && u->as_Call()->has_non_debug_use(n))) { |
| 3684 | safe_to_skip = false; |
| 3685 | } |
| 3686 | } |
| 3687 | } |
| 3688 | if (safe_to_skip) { |
| 3689 | n->set_req(j, in->in(1)); |
| 3690 | } |
| 3691 | if (in->outcnt() == 0) { |
| 3692 | in->disconnect_inputs(this); |
| 3693 | } |
| 3694 | } |
| 3695 | } |
| 3696 | } |
| 3697 | } |
| 3698 | |
| 3699 | //------------------------------final_graph_reshaping-------------------------- |
| 3700 | // Final Graph Reshaping. |
| 3701 | // |
| 3702 | // (1) Clone simple inputs to uncommon calls, so they can be scheduled late |
| 3703 | // and not commoned up and forced early. Must come after regular |
| 3704 | // optimizations to avoid GVN undoing the cloning. Clone constant |
| 3705 | // inputs to Loop Phis; these will be split by the allocator anyways. |
| 3706 | // Remove Opaque nodes. |
| 3707 | // (2) Move last-uses by commutative operations to the left input to encourage |
| 3708 | // Intel update-in-place two-address operations and better register usage |
| 3709 | // on RISCs. Must come after regular optimizations to avoid GVN Ideal |
| 3710 | // calls canonicalizing them back. |
| 3711 | // (3) Count the number of double-precision FP ops, single-precision FP ops |
| 3712 | // and call sites. On Intel, we can get correct rounding either by |
| 3713 | // forcing singles to memory (requires extra stores and loads after each |
| 3714 | // FP bytecode) or we can set a rounding mode bit (requires setting and |
| 3715 | // clearing the mode bit around call sites). The mode bit is only used |
| 3716 | // if the relative frequency of single FP ops to calls is low enough. |
| 3717 | // This is a key transform for SPEC mpeg_audio. |
| 3718 | // (4) Detect infinite loops; blobs of code reachable from above but not |
| 3719 | // below. Several of the Code_Gen algorithms fail on such code shapes, |
| 3720 | // so we simply bail out. Happens a lot in ZKM.jar, but also happens |
| 3721 | // from time to time in other codes (such as -Xcomp finalizer loops, etc). |
| 3722 | // Detection is by looking for IfNodes where only 1 projection is |
| 3723 | // reachable from below or CatchNodes missing some targets. |
| 3724 | // (5) Assert for insane oop offsets in debug mode. |
| 3725 | |
| 3726 | bool Compile::final_graph_reshaping() { |
| 3727 | // an infinite loop may have been eliminated by the optimizer, |
| 3728 | // in which case the graph will be empty. |
| 3729 | if (root()->req() == 1) { |
| 3730 | record_method_not_compilable("trivial infinite loop"); |
| 3731 | return true; |
| 3732 | } |
| 3733 | |
| 3734 | // Expensive nodes have their control input set to prevent the GVN |
| 3735 | // from freely commoning them. There's no GVN beyond this point so |
| 3736 | // no need to keep the control input. We want the expensive nodes to |
| 3737 | // be freely moved to the least frequent code path by gcm. |
| 3738 | assert(OptimizeExpensiveOps || expensive_count() == 0, "optimization off but list non empty?")do { if (!(OptimizeExpensiveOps || expensive_count() == 0)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3738, "assert(" "OptimizeExpensiveOps || expensive_count() == 0" ") failed", "optimization off but list non empty?"); ::breakpoint (); } } while (0); |
| 3739 | for (int i = 0; i < expensive_count(); i++) { |
| 3740 | _expensive_nodes.at(i)->set_req(0, NULL__null); |
| 3741 | } |
| 3742 | |
| 3743 | Final_Reshape_Counts frc; |
| 3744 | |
| 3745 | // Visit everybody reachable! |
| 3746 | // Allocate stack of size C->live_nodes()/2 to avoid frequent realloc |
| 3747 | Node_Stack nstack(live_nodes() >> 1); |
| 3748 | final_graph_reshaping_walk(nstack, root(), frc); |
| 3749 | |
| 3750 | // Check for unreachable (from below) code (i.e., infinite loops). |
| 3751 | for( uint i = 0; i < frc._tests.size(); i++ ) { |
| 3752 | MultiBranchNode *n = frc._tests[i]->as_MultiBranch(); |
| 3753 | // Get number of CFG targets. |
| 3754 | // Note that PCTables include exception targets after calls. |
| 3755 | uint required_outcnt = n->required_outcnt(); |
| 3756 | if (n->outcnt() != required_outcnt) { |
| 3757 | // Check for a few special cases. Rethrow Nodes never take the |
| 3758 | // 'fall-thru' path, so expected kids is 1 less. |
| 3759 | if (n->is_PCTable() && n->in(0) && n->in(0)->in(0)) { |
| 3760 | if (n->in(0)->in(0)->is_Call()) { |
| 3761 | CallNode *call = n->in(0)->in(0)->as_Call(); |
| 3762 | if (call->entry_point() == OptoRuntime::rethrow_stub()) { |
| 3763 | required_outcnt--; // Rethrow always has 1 less kid |
| 3764 | } else if (call->req() > TypeFunc::Parms && |
| 3765 | call->is_CallDynamicJava()) { |
| 3766 | // Check for null receiver. In such case, the optimizer has |
| 3767 | // detected that the virtual call will always result in a null |
| 3768 | // pointer exception. The fall-through projection of this CatchNode |
| 3769 | // will not be populated. |
| 3770 | Node *arg0 = call->in(TypeFunc::Parms); |
| 3771 | if (arg0->is_Type() && |
| 3772 | arg0->as_Type()->type()->higher_equal(TypePtr::NULL_PTR)) { |
| 3773 | required_outcnt--; |
| 3774 | } |
| 3775 | } else if (call->entry_point() == OptoRuntime::new_array_Java() && |
| 3776 | call->req() > TypeFunc::Parms+1 && |
| 3777 | call->is_CallStaticJava()) { |
| 3778 | // Check for negative array length. In such case, the optimizer has |
| 3779 | // detected that the allocation attempt will always result in an |
| 3780 | // exception. There is no fall-through projection of this CatchNode . |
| 3781 | Node *arg1 = call->in(TypeFunc::Parms+1); |
| 3782 | if (arg1->is_Type() && |
| 3783 | arg1->as_Type()->type()->join(TypeInt::POS)->empty()) { |
| 3784 | required_outcnt--; |
| 3785 | } |
| 3786 | } |
| 3787 | } |
| 3788 | } |
| 3789 | // Recheck with a better notion of 'required_outcnt' |
| 3790 | if (n->outcnt() != required_outcnt) { |
| 3791 | record_method_not_compilable("malformed control flow"); |
| 3792 | return true; // Not all targets reachable! |
| 3793 | } |
| 3794 | } |
| 3795 | // Check that I actually visited all kids. Unreached kids |
| 3796 | // must be infinite loops. |
| 3797 | for (DUIterator_Fast jmax, j = n->fast_outs(jmax); j < jmax; j++) |
| 3798 | if (!frc._visited.test(n->fast_out(j)->_idx)) { |
| 3799 | record_method_not_compilable("infinite loop"); |
| 3800 | return true; // Found unvisited kid; must be unreach |
| 3801 | } |
| 3802 | |
| 3803 | // Here so verification code in final_graph_reshaping_walk() |
| 3804 | // always see an OuterStripMinedLoopEnd |
| 3805 | if (n->is_OuterStripMinedLoopEnd() || n->is_LongCountedLoopEnd()) { |
| 3806 | IfNode* init_iff = n->as_If(); |
| 3807 | Node* iff = new IfNode(init_iff->in(0), init_iff->in(1), init_iff->_prob, init_iff->_fcnt); |
| 3808 | n->subsume_by(iff, this); |
| 3809 | } |
| 3810 | } |
| 3811 | |
| 3812 | #ifdef IA32 |
| 3813 | // If original bytecodes contained a mixture of floats and doubles |
| 3814 | // check if the optimizer has made it homogenous, item (3). |
| 3815 | if (UseSSE == 0 && |
| 3816 | frc.get_float_count() > 32 && |
| 3817 | frc.get_double_count() == 0 && |
| 3818 | (10 * frc.get_call_count() < frc.get_float_count()) ) { |
| 3819 | set_24_bit_selection_and_mode(false, true); |
| 3820 | } |
| 3821 | #endif // IA32 |
| 3822 | |
| 3823 | set_java_calls(frc.get_java_call_count()); |
| 3824 | set_inner_loops(frc.get_inner_loop_count()); |
| 3825 | |
| 3826 | // No infinite loops, no reason to bail out. |
| 3827 | return false; |
| 3828 | } |
| 3829 | |
| 3830 | //-----------------------------too_many_traps---------------------------------- |
| 3831 | // Report if there are too many traps at the current method and bci. |
| 3832 | // Return true if there was a trap, and/or PerMethodTrapLimit is exceeded. |
| 3833 | bool Compile::too_many_traps(ciMethod* method, |
| 3834 | int bci, |
| 3835 | Deoptimization::DeoptReason reason) { |
| 3836 | ciMethodData* md = method->method_data(); |
| 3837 | if (md->is_empty()) { |
| 3838 | // Assume the trap has not occurred, or that it occurred only |
| 3839 | // because of a transient condition during start-up in the interpreter. |
| 3840 | return false; |
| 3841 | } |
| 3842 | ciMethod* m = Deoptimization::reason_is_speculate(reason) ? this->method() : NULL__null; |
| 3843 | if (md->has_trap_at(bci, m, reason) != 0) { |
| 3844 | // Assume PerBytecodeTrapLimit==0, for a more conservative heuristic. |
| 3845 | // Also, if there are multiple reasons, or if there is no per-BCI record, |
| 3846 | // assume the worst. |
| 3847 | if (log()) |
| 3848 | log()->elem("observe trap='%s' count='%d'", |
| 3849 | Deoptimization::trap_reason_name(reason), |
| 3850 | md->trap_count(reason)); |
| 3851 | return true; |
| 3852 | } else { |
| 3853 | // Ignore method/bci and see if there have been too many globally. |
| 3854 | return too_many_traps(reason, md); |
| 3855 | } |
| 3856 | } |
| 3857 | |
| 3858 | // Less-accurate variant which does not require a method and bci. |
| 3859 | bool Compile::too_many_traps(Deoptimization::DeoptReason reason, |
| 3860 | ciMethodData* logmd) { |
| 3861 | if (trap_count(reason) >= Deoptimization::per_method_trap_limit(reason)) { |
| 3862 | // Too many traps globally. |
| 3863 | // Note that we use cumulative trap_count, not just md->trap_count. |
| 3864 | if (log()) { |
| 3865 | int mcount = (logmd == NULL__null)? -1: (int)logmd->trap_count(reason); |
| 3866 | log()->elem("observe trap='%s' count='0' mcount='%d' ccount='%d'", |
| 3867 | Deoptimization::trap_reason_name(reason), |
| 3868 | mcount, trap_count(reason)); |
| 3869 | } |
| 3870 | return true; |
| 3871 | } else { |
| 3872 | // The coast is clear. |
| 3873 | return false; |
| 3874 | } |
| 3875 | } |
| 3876 | |
| 3877 | //--------------------------too_many_recompiles-------------------------------- |
| 3878 | // Report if there are too many recompiles at the current method and bci. |
| 3879 | // Consults PerBytecodeRecompilationCutoff and PerMethodRecompilationCutoff. |
| 3880 | // Is not eager to return true, since this will cause the compiler to use |
| 3881 | // Action_none for a trap point, to avoid too many recompilations. |
| 3882 | bool Compile::too_many_recompiles(ciMethod* method, |
| 3883 | int bci, |
| 3884 | Deoptimization::DeoptReason reason) { |
| 3885 | ciMethodData* md = method->method_data(); |
| 3886 | if (md->is_empty()) { |
| 3887 | // Assume the trap has not occurred, or that it occurred only |
| 3888 | // because of a transient condition during start-up in the interpreter. |
| 3889 | return false; |
| 3890 | } |
| 3891 | // Pick a cutoff point well within PerBytecodeRecompilationCutoff. |
| 3892 | uint bc_cutoff = (uint) PerBytecodeRecompilationCutoff / 8; |
| 3893 | uint m_cutoff = (uint) PerMethodRecompilationCutoff / 2 + 1; // not zero |
| 3894 | Deoptimization::DeoptReason per_bc_reason |
| 3895 | = Deoptimization::reason_recorded_per_bytecode_if_any(reason); |
| 3896 | ciMethod* m = Deoptimization::reason_is_speculate(reason) ? this->method() : NULL__null; |
| 3897 | if ((per_bc_reason == Deoptimization::Reason_none |
| 3898 | || md->has_trap_at(bci, m, reason) != 0) |
| 3899 | // The trap frequency measure we care about is the recompile count: |
| 3900 | && md->trap_recompiled_at(bci, m) |
| 3901 | && md->overflow_recompile_count() >= bc_cutoff) { |
| 3902 | // Do not emit a trap here if it has already caused recompilations. |
| 3903 | // Also, if there are multiple reasons, or if there is no per-BCI record, |
| 3904 | // assume the worst. |
| 3905 | if (log()) |
| 3906 | log()->elem("observe trap='%s recompiled' count='%d' recompiles2='%d'", |
| 3907 | Deoptimization::trap_reason_name(reason), |
| 3908 | md->trap_count(reason), |
| 3909 | md->overflow_recompile_count()); |
| 3910 | return true; |
| 3911 | } else if (trap_count(reason) != 0 |
| 3912 | && decompile_count() >= m_cutoff) { |
| 3913 | // Too many recompiles globally, and we have seen this sort of trap. |
| 3914 | // Use cumulative decompile_count, not just md->decompile_count. |
| 3915 | if (log()) |
| 3916 | log()->elem("observe trap='%s' count='%d' mcount='%d' decompiles='%d' mdecompiles='%d'", |
| 3917 | Deoptimization::trap_reason_name(reason), |
| 3918 | md->trap_count(reason), trap_count(reason), |
| 3919 | md->decompile_count(), decompile_count()); |
| 3920 | return true; |
| 3921 | } else { |
| 3922 | // The coast is clear. |
| 3923 | return false; |
| 3924 | } |
| 3925 | } |
| 3926 | |
| 3927 | // Compute when not to trap. Used by matching trap based nodes and |
| 3928 | // NullCheck optimization. |
| 3929 | void Compile::set_allowed_deopt_reasons() { |
| 3930 | _allowed_reasons = 0; |
| 3931 | if (is_method_compilation()) { |
| 3932 | for (int rs = (int)Deoptimization::Reason_none+1; rs < Compile::trapHistLength; rs++) { |
| 3933 | assert(rs < BitsPerInt, "recode bit map")do { if (!(rs < BitsPerInt)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 3933, "assert(" "rs < BitsPerInt" ") failed", "recode bit map" ); ::breakpoint(); } } while (0); |
| 3934 | if (!too_many_traps((Deoptimization::DeoptReason) rs)) { |
| 3935 | _allowed_reasons |= nth_bit(rs)(((rs) >= BitsPerWord) ? 0 : (OneBit << (rs))); |
| 3936 | } |
| 3937 | } |
| 3938 | } |
| 3939 | } |
| 3940 | |
| 3941 | bool Compile::needs_clinit_barrier(ciMethod* method, ciMethod* accessing_method) { |
| 3942 | return method->is_static() && needs_clinit_barrier(method->holder(), accessing_method); |
| 3943 | } |
| 3944 | |
| 3945 | bool Compile::needs_clinit_barrier(ciField* field, ciMethod* accessing_method) { |
| 3946 | return field->is_static() && needs_clinit_barrier(field->holder(), accessing_method); |
| 3947 | } |
| 3948 | |
| 3949 | bool Compile::needs_clinit_barrier(ciInstanceKlass* holder, ciMethod* accessing_method) { |
| 3950 | if (holder->is_initialized()) { |
| 3951 | return false; |
| 3952 | } |
| 3953 | if (holder->is_being_initialized()) { |
| 3954 | if (accessing_method->holder() == holder) { |
| 3955 | // Access inside a class. The barrier can be elided when access happens in <clinit>, |
| 3956 | // <init>, or a static method. In all those cases, there was an initialization |
| 3957 | // barrier on the holder klass passed. |
| 3958 | if (accessing_method->is_static_initializer() || |
| 3959 | accessing_method->is_object_initializer() || |
| 3960 | accessing_method->is_static()) { |
| 3961 | return false; |
| 3962 | } |
| 3963 | } else if (accessing_method->holder()->is_subclass_of(holder)) { |
| 3964 | // Access from a subclass. The barrier can be elided only when access happens in <clinit>. |
| 3965 | // In case of <init> or a static method, the barrier is on the subclass is not enough: |
| 3966 | // child class can become fully initialized while its parent class is still being initialized. |
| 3967 | if (accessing_method->is_static_initializer()) { |
| 3968 | return false; |
| 3969 | } |
| 3970 | } |
| 3971 | ciMethod* root = method(); // the root method of compilation |
| 3972 | if (root != accessing_method) { |
| 3973 | return needs_clinit_barrier(holder, root); // check access in the context of compilation root |
| 3974 | } |
| 3975 | } |
| 3976 | return true; |
| 3977 | } |
| 3978 | |
| 3979 | #ifndef PRODUCT |
| 3980 | //------------------------------verify_graph_edges--------------------------- |
| 3981 | // Walk the Graph and verify that there is a one-to-one correspondence |
| 3982 | // between Use-Def edges and Def-Use edges in the graph. |
| 3983 | void Compile::verify_graph_edges(bool no_dead_code) { |
| 3984 | if (VerifyGraphEdges) { |
| 3985 | Unique_Node_List visited; |
| 3986 | // Call recursive graph walk to check edges |
| 3987 | _root->verify_edges(visited); |
| 3988 | if (no_dead_code) { |
| 3989 | // Now make sure that no visited node is used by an unvisited node. |
| 3990 | bool dead_nodes = false; |
| 3991 | Unique_Node_List checked; |
| 3992 | while (visited.size() > 0) { |
| 3993 | Node* n = visited.pop(); |
| 3994 | checked.push(n); |
| 3995 | for (uint i = 0; i < n->outcnt(); i++) { |
| 3996 | Node* use = n->raw_out(i); |
| 3997 | if (checked.member(use)) continue; // already checked |
| 3998 | if (visited.member(use)) continue; // already in the graph |
| 3999 | if (use->is_Con()) continue; // a dead ConNode is OK |
| 4000 | // At this point, we have found a dead node which is DU-reachable. |
| 4001 | if (!dead_nodes) { |
| 4002 | tty->print_cr("*** Dead nodes reachable via DU edges:"); |
| 4003 | dead_nodes = true; |
| 4004 | } |
| 4005 | use->dump(2); |
| 4006 | tty->print_cr("---"); |
| 4007 | checked.push(use); // No repeats; pretend it is now checked. |
| 4008 | } |
| 4009 | } |
| 4010 | assert(!dead_nodes, "using nodes must be reachable from root")do { if (!(!dead_nodes)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4010, "assert(" "!dead_nodes" ") failed", "using nodes must be reachable from root" ); ::breakpoint(); } } while (0); |
| 4011 | } |
| 4012 | } |
| 4013 | } |
| 4014 | #endif |
| 4015 | |
| 4016 | // The Compile object keeps track of failure reasons separately from the ciEnv. |
| 4017 | // This is required because there is not quite a 1-1 relation between the |
| 4018 | // ciEnv and its compilation task and the Compile object. Note that one |
| 4019 | // ciEnv might use two Compile objects, if C2Compiler::compile_method decides |
| 4020 | // to backtrack and retry without subsuming loads. Other than this backtracking |
| 4021 | // behavior, the Compile's failure reason is quietly copied up to the ciEnv |
| 4022 | // by the logic in C2Compiler. |
| 4023 | void Compile::record_failure(const char* reason) { |
| 4024 | if (log() != NULL__null) { |
| 4025 | log()->elem("failure reason='%s' phase='compile'", reason); |
| 4026 | } |
| 4027 | if (_failure_reason == NULL__null) { |
| 4028 | // Record the first failure reason. |
| 4029 | _failure_reason = reason; |
| 4030 | } |
| 4031 | |
| 4032 | if (!C->failure_reason_is(C2Compiler::retry_no_subsuming_loads())) { |
| 4033 | C->print_method(PHASE_FAILURE); |
| 4034 | } |
| 4035 | _root = NULL__null; // flush the graph, too |
| 4036 | } |
| 4037 | |
| 4038 | Compile::TracePhase::TracePhase(const char* name, elapsedTimer* accumulator) |
| 4039 | : TraceTime(name, accumulator, CITime, CITimeVerbose), |
| 4040 | _phase_name(name), _dolog(CITimeVerbose) |
| 4041 | { |
| 4042 | if (_dolog) { |
| 4043 | C = Compile::current(); |
| 4044 | _log = C->log(); |
| 4045 | } else { |
| 4046 | C = NULL__null; |
| 4047 | _log = NULL__null; |
| 4048 | } |
| 4049 | if (_log != NULL__null) { |
| 4050 | _log->begin_head("phase name='%s' nodes='%d' live='%d'", _phase_name, C->unique(), C->live_nodes()); |
| 4051 | _log->stamp(); |
| 4052 | _log->end_head(); |
| 4053 | } |
| 4054 | } |
| 4055 | |
| 4056 | Compile::TracePhase::~TracePhase() { |
| 4057 | |
| 4058 | C = Compile::current(); |
| 4059 | if (_dolog) { |
| 4060 | _log = C->log(); |
| 4061 | } else { |
| 4062 | _log = NULL__null; |
| 4063 | } |
| 4064 | |
| 4065 | #ifdef ASSERT1 |
| 4066 | if (PrintIdealNodeCount) { |
| 4067 | tty->print_cr("phase name='%s' nodes='%d' live='%d' live_graph_walk='%d'", |
| 4068 | _phase_name, C->unique(), C->live_nodes(), C->count_live_nodes_by_graph_walk()); |
| 4069 | } |
| 4070 | |
| 4071 | if (VerifyIdealNodeCount) { |
| 4072 | Compile::current()->print_missing_nodes(); |
| 4073 | } |
| 4074 | #endif |
| 4075 | |
| 4076 | if (_log != NULL__null) { |
| 4077 | _log->done("phase name='%s' nodes='%d' live='%d'", _phase_name, C->unique(), C->live_nodes()); |
| 4078 | } |
| 4079 | } |
| 4080 | |
| 4081 | //----------------------------static_subtype_check----------------------------- |
| 4082 | // Shortcut important common cases when superklass is exact: |
| 4083 | // (0) superklass is java.lang.Object (can occur in reflective code) |
| 4084 | // (1) subklass is already limited to a subtype of superklass => always ok |
| 4085 | // (2) subklass does not overlap with superklass => always fail |
| 4086 | // (3) superklass has NO subtypes and we can check with a simple compare. |
| 4087 | int Compile::static_subtype_check(ciKlass* superk, ciKlass* subk) { |
| 4088 | if (StressReflectiveCode) { |
| 4089 | return SSC_full_test; // Let caller generate the general case. |
| 4090 | } |
| 4091 | |
| 4092 | if (superk == env()->Object_klass()) { |
| 4093 | return SSC_always_true; // (0) this test cannot fail |
| 4094 | } |
| 4095 | |
| 4096 | ciType* superelem = superk; |
| 4097 | ciType* subelem = subk; |
| 4098 | if (superelem->is_array_klass()) { |
| 4099 | superelem = superelem->as_array_klass()->base_element_type(); |
| 4100 | } |
| 4101 | if (subelem->is_array_klass()) { |
| 4102 | subelem = subelem->as_array_klass()->base_element_type(); |
| 4103 | } |
| 4104 | |
| 4105 | if (!subk->is_interface()) { // cannot trust static interface types yet |
| 4106 | if (subk->is_subtype_of(superk)) { |
| 4107 | return SSC_always_true; // (1) false path dead; no dynamic test needed |
| 4108 | } |
| 4109 | if (!(superelem->is_klass() && superelem->as_klass()->is_interface()) && |
| 4110 | !(subelem->is_klass() && subelem->as_klass()->is_interface()) && |
| 4111 | !superk->is_subtype_of(subk)) { |
| 4112 | return SSC_always_false; // (2) true path dead; no dynamic test needed |
| 4113 | } |
| 4114 | } |
| 4115 | |
| 4116 | // If casting to an instance klass, it must have no subtypes |
| 4117 | if (superk->is_interface()) { |
| 4118 | // Cannot trust interfaces yet. |
| 4119 | // %%% S.B. superk->nof_implementors() == 1 |
| 4120 | } else if (superelem->is_instance_klass()) { |
| 4121 | ciInstanceKlass* ik = superelem->as_instance_klass(); |
| 4122 | if (!ik->has_subklass() && !ik->is_interface()) { |
| 4123 | if (!ik->is_final()) { |
| 4124 | // Add a dependency if there is a chance of a later subclass. |
| 4125 | dependencies()->assert_leaf_type(ik); |
| 4126 | } |
| 4127 | return SSC_easy_test; // (3) caller can do a simple ptr comparison |
| 4128 | } |
| 4129 | } else { |
| 4130 | // A primitive array type has no subtypes. |
| 4131 | return SSC_easy_test; // (3) caller can do a simple ptr comparison |
| 4132 | } |
| 4133 | |
| 4134 | return SSC_full_test; |
| 4135 | } |
| 4136 | |
| 4137 | Node* Compile::conv_I2X_index(PhaseGVN* phase, Node* idx, const TypeInt* sizetype, Node* ctrl) { |
| 4138 | #ifdef _LP641 |
| 4139 | // The scaled index operand to AddP must be a clean 64-bit value. |
| 4140 | // Java allows a 32-bit int to be incremented to a negative |
| 4141 | // value, which appears in a 64-bit register as a large |
| 4142 | // positive number. Using that large positive number as an |
| 4143 | // operand in pointer arithmetic has bad consequences. |
| 4144 | // On the other hand, 32-bit overflow is rare, and the possibility |
| 4145 | // can often be excluded, if we annotate the ConvI2L node with |
| 4146 | // a type assertion that its value is known to be a small positive |
| 4147 | // number. (The prior range check has ensured this.) |
| 4148 | // This assertion is used by ConvI2LNode::Ideal. |
| 4149 | int index_max = max_jint - 1; // array size is max_jint, index is one less |
| 4150 | if (sizetype != NULL__null) index_max = sizetype->_hi - 1; |
| 4151 | const TypeInt* iidxtype = TypeInt::make(0, index_max, Type::WidenMax); |
| 4152 | idx = constrained_convI2L(phase, idx, iidxtype, ctrl); |
| 4153 | #endif |
| 4154 | return idx; |
| 4155 | } |
| 4156 | |
| 4157 | // Convert integer value to a narrowed long type dependent on ctrl (for example, a range check) |
| 4158 | Node* Compile::constrained_convI2L(PhaseGVN* phase, Node* value, const TypeInt* itype, Node* ctrl, bool carry_dependency) { |
| 4159 | if (ctrl != NULL__null) { |
| 4160 | // Express control dependency by a CastII node with a narrow type. |
| 4161 | value = new CastIINode(value, itype, carry_dependency ? ConstraintCastNode::StrongDependency : ConstraintCastNode::RegularDependency, true /* range check dependency */); |
| 4162 | // Make the CastII node dependent on the control input to prevent the narrowed ConvI2L |
| 4163 | // node from floating above the range check during loop optimizations. Otherwise, the |
| 4164 | // ConvI2L node may be eliminated independently of the range check, causing the data path |
| 4165 | // to become TOP while the control path is still there (although it's unreachable). |
| 4166 | value->set_req(0, ctrl); |
| 4167 | value = phase->transform(value); |
| 4168 | } |
| 4169 | const TypeLong* ltype = TypeLong::make(itype->_lo, itype->_hi, itype->_widen); |
| 4170 | return phase->transform(new ConvI2LNode(value, ltype)); |
| 4171 | } |
| 4172 | |
| 4173 | void Compile::print_inlining_stream_free() { |
| 4174 | if (_print_inlining_stream != NULL__null) { |
| 4175 | _print_inlining_stream->~stringStream(); |
| 4176 | _print_inlining_stream = NULL__null; |
| 4177 | } |
| 4178 | } |
| 4179 | |
| 4180 | // The message about the current inlining is accumulated in |
| 4181 | // _print_inlining_stream and transfered into the _print_inlining_list |
| 4182 | // once we know whether inlining succeeds or not. For regular |
| 4183 | // inlining, messages are appended to the buffer pointed by |
| 4184 | // _print_inlining_idx in the _print_inlining_list. For late inlining, |
| 4185 | // a new buffer is added after _print_inlining_idx in the list. This |
| 4186 | // way we can update the inlining message for late inlining call site |
| 4187 | // when the inlining is attempted again. |
| 4188 | void Compile::print_inlining_init() { |
| 4189 | if (print_inlining() || print_intrinsics()) { |
| 4190 | // print_inlining_init is actually called several times. |
| 4191 | print_inlining_stream_free(); |
| 4192 | _print_inlining_stream = new stringStream(); |
| 4193 | _print_inlining_list = new (comp_arena())GrowableArray<PrintInliningBuffer*>(comp_arena(), 1, 1, new PrintInliningBuffer()); |
| 4194 | } |
| 4195 | } |
| 4196 | |
| 4197 | void Compile::print_inlining_reinit() { |
| 4198 | if (print_inlining() || print_intrinsics()) { |
| 4199 | print_inlining_stream_free(); |
| 4200 | // Re allocate buffer when we change ResourceMark |
| 4201 | _print_inlining_stream = new stringStream(); |
| 4202 | } |
| 4203 | } |
| 4204 | |
| 4205 | void Compile::print_inlining_reset() { |
| 4206 | _print_inlining_stream->reset(); |
| 4207 | } |
| 4208 | |
| 4209 | void Compile::print_inlining_commit() { |
| 4210 | assert(print_inlining() || print_intrinsics(), "PrintInlining off?")do { if (!(print_inlining() || print_intrinsics())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4210, "assert(" "print_inlining() || print_intrinsics()" ") failed" , "PrintInlining off?"); ::breakpoint(); } } while (0); |
| 4211 | // Transfer the message from _print_inlining_stream to the current |
| 4212 | // _print_inlining_list buffer and clear _print_inlining_stream. |
| 4213 | _print_inlining_list->at(_print_inlining_idx)->ss()->write(_print_inlining_stream->base(), _print_inlining_stream->size()); |
| 4214 | print_inlining_reset(); |
| 4215 | } |
| 4216 | |
| 4217 | void Compile::print_inlining_push() { |
| 4218 | // Add new buffer to the _print_inlining_list at current position |
| 4219 | _print_inlining_idx++; |
| 4220 | _print_inlining_list->insert_before(_print_inlining_idx, new PrintInliningBuffer()); |
| 4221 | } |
| 4222 | |
| 4223 | Compile::PrintInliningBuffer* Compile::print_inlining_current() { |
| 4224 | return _print_inlining_list->at(_print_inlining_idx); |
| 4225 | } |
| 4226 | |
| 4227 | void Compile::print_inlining_update(CallGenerator* cg) { |
| 4228 | if (print_inlining() || print_intrinsics()) { |
| 4229 | if (cg->is_late_inline()) { |
| 4230 | if (print_inlining_current()->cg() != cg && |
| 4231 | (print_inlining_current()->cg() != NULL__null || |
| 4232 | print_inlining_current()->ss()->size() != 0)) { |
| 4233 | print_inlining_push(); |
| 4234 | } |
| 4235 | print_inlining_commit(); |
| 4236 | print_inlining_current()->set_cg(cg); |
| 4237 | } else { |
| 4238 | if (print_inlining_current()->cg() != NULL__null) { |
| 4239 | print_inlining_push(); |
| 4240 | } |
| 4241 | print_inlining_commit(); |
| 4242 | } |
| 4243 | } |
| 4244 | } |
| 4245 | |
| 4246 | void Compile::print_inlining_move_to(CallGenerator* cg) { |
| 4247 | // We resume inlining at a late inlining call site. Locate the |
| 4248 | // corresponding inlining buffer so that we can update it. |
| 4249 | if (print_inlining() || print_intrinsics()) { |
| 4250 | for (int i = 0; i < _print_inlining_list->length(); i++) { |
| 4251 | if (_print_inlining_list->at(i)->cg() == cg) { |
| 4252 | _print_inlining_idx = i; |
| 4253 | return; |
| 4254 | } |
| 4255 | } |
| 4256 | ShouldNotReachHere()do { (*g_assert_poison) = 'X';; report_should_not_reach_here( "/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4256); ::breakpoint(); } while (0); |
| 4257 | } |
| 4258 | } |
| 4259 | |
| 4260 | void Compile::print_inlining_update_delayed(CallGenerator* cg) { |
| 4261 | if (print_inlining() || print_intrinsics()) { |
| 4262 | assert(_print_inlining_stream->size() > 0, "missing inlining msg")do { if (!(_print_inlining_stream->size() > 0)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4262, "assert(" "_print_inlining_stream->size() > 0" ") failed" , "missing inlining msg"); ::breakpoint(); } } while (0); |
| 4263 | assert(print_inlining_current()->cg() == cg, "wrong entry")do { if (!(print_inlining_current()->cg() == cg)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4263, "assert(" "print_inlining_current()->cg() == cg" ") failed" , "wrong entry"); ::breakpoint(); } } while (0); |
| 4264 | // replace message with new message |
| 4265 | _print_inlining_list->at_put(_print_inlining_idx, new PrintInliningBuffer()); |
| 4266 | print_inlining_commit(); |
| 4267 | print_inlining_current()->set_cg(cg); |
| 4268 | } |
| 4269 | } |
| 4270 | |
| 4271 | void Compile::print_inlining_assert_ready() { |
| 4272 | assert(!_print_inlining || _print_inlining_stream->size() == 0, "loosing data")do { if (!(!_print_inlining || _print_inlining_stream->size () == 0)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4272, "assert(" "!_print_inlining || _print_inlining_stream->size() == 0" ") failed", "loosing data"); ::breakpoint(); } } while (0); |
| 4273 | } |
| 4274 | |
| 4275 | void Compile::process_print_inlining() { |
| 4276 | assert(_late_inlines.length() == 0, "not drained yet")do { if (!(_late_inlines.length() == 0)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4276, "assert(" "_late_inlines.length() == 0" ") failed", "not drained yet" ); ::breakpoint(); } } while (0); |
| 4277 | if (print_inlining() || print_intrinsics()) { |
| 4278 | ResourceMark rm; |
| 4279 | stringStream ss; |
| 4280 | assert(_print_inlining_list != NULL, "process_print_inlining should be called only once.")do { if (!(_print_inlining_list != __null)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4280, "assert(" "_print_inlining_list != __null" ") failed" , "process_print_inlining should be called only once."); ::breakpoint (); } } while (0); |
| 4281 | for (int i = 0; i < _print_inlining_list->length(); i++) { |
| 4282 | PrintInliningBuffer* pib = _print_inlining_list->at(i); |
| 4283 | ss.print("%s", pib->ss()->as_string()); |
| 4284 | delete pib; |
| 4285 | DEBUG_ONLY(_print_inlining_list->at_put(i, NULL))_print_inlining_list->at_put(i, __null); |
| 4286 | } |
| 4287 | // Reset _print_inlining_list, it only contains destructed objects. |
| 4288 | // It is on the arena, so it will be freed when the arena is reset. |
| 4289 | _print_inlining_list = NULL__null; |
| 4290 | // _print_inlining_stream won't be used anymore, either. |
| 4291 | print_inlining_stream_free(); |
| 4292 | size_t end = ss.size(); |
| 4293 | _print_inlining_output = NEW_ARENA_ARRAY(comp_arena(), char, end+1)(char*) (comp_arena())->Amalloc((end+1) * sizeof(char)); |
| 4294 | strncpy(_print_inlining_output, ss.base(), end+1); |
| 4295 | _print_inlining_output[end] = 0; |
| 4296 | } |
| 4297 | } |
| 4298 | |
| 4299 | void Compile::dump_print_inlining() { |
| 4300 | if (_print_inlining_output != NULL__null) { |
| 4301 | tty->print_raw(_print_inlining_output); |
| 4302 | } |
| 4303 | } |
| 4304 | |
| 4305 | void Compile::log_late_inline(CallGenerator* cg) { |
| 4306 | if (log() != NULL__null) { |
| 4307 | log()->head("late_inline method='%d' inline_id='" JLONG_FORMAT"%" "l" "d" "'", log()->identify(cg->method()), |
| 4308 | cg->unique_id()); |
| 4309 | JVMState* p = cg->call_node()->jvms(); |
| 4310 | while (p != NULL__null) { |
| 4311 | log()->elem("jvms bci='%d' method='%d'", p->bci(), log()->identify(p->method())); |
| 4312 | p = p->caller(); |
| 4313 | } |
| 4314 | log()->tail("late_inline"); |
| 4315 | } |
| 4316 | } |
| 4317 | |
| 4318 | void Compile::log_late_inline_failure(CallGenerator* cg, const char* msg) { |
| 4319 | log_late_inline(cg); |
| 4320 | if (log() != NULL__null) { |
| 4321 | log()->inline_fail(msg); |
| 4322 | } |
| 4323 | } |
| 4324 | |
| 4325 | void Compile::log_inline_id(CallGenerator* cg) { |
| 4326 | if (log() != NULL__null) { |
| 4327 | // The LogCompilation tool needs a unique way to identify late |
| 4328 | // inline call sites. This id must be unique for this call site in |
| 4329 | // this compilation. Try to have it unique across compilations as |
| 4330 | // well because it can be convenient when grepping through the log |
| 4331 | // file. |
| 4332 | // Distinguish OSR compilations from others in case CICountOSR is |
| 4333 | // on. |
| 4334 | jlong id = ((jlong)unique()) + (((jlong)compile_id()) << 33) + (CICountOSR && is_osr_compilation() ? ((jlong)1) << 32 : 0); |
| 4335 | cg->set_unique_id(id); |
| 4336 | log()->elem("inline_id id='" JLONG_FORMAT"%" "l" "d" "'", id); |
| 4337 | } |
| 4338 | } |
| 4339 | |
| 4340 | void Compile::log_inline_failure(const char* msg) { |
| 4341 | if (C->log() != NULL__null) { |
| 4342 | C->log()->inline_fail(msg); |
| 4343 | } |
| 4344 | } |
| 4345 | |
| 4346 | |
| 4347 | // Dump inlining replay data to the stream. |
| 4348 | // Don't change thread state and acquire any locks. |
| 4349 | void Compile::dump_inline_data(outputStream* out) { |
| 4350 | InlineTree* inl_tree = ilt(); |
| 4351 | if (inl_tree != NULL__null) { |
| 4352 | out->print(" inline %d", inl_tree->count()); |
| 4353 | inl_tree->dump_replay_data(out); |
| 4354 | } |
| 4355 | } |
| 4356 | |
| 4357 | int Compile::cmp_expensive_nodes(Node* n1, Node* n2) { |
| 4358 | if (n1->Opcode() < n2->Opcode()) return -1; |
| 4359 | else if (n1->Opcode() > n2->Opcode()) return 1; |
| 4360 | |
| 4361 | assert(n1->req() == n2->req(), "can't compare %s nodes: n1->req() = %d, n2->req() = %d", NodeClassNames[n1->Opcode()], n1->req(), n2->req())do { if (!(n1->req() == n2->req())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4361, "assert(" "n1->req() == n2->req()" ") failed", "can't compare %s nodes: n1->req() = %d, n2->req() = %d" , NodeClassNames[n1->Opcode()], n1->req(), n2->req() ); ::breakpoint(); } } while (0); |
| 4362 | for (uint i = 1; i < n1->req(); i++) { |
| 4363 | if (n1->in(i) < n2->in(i)) return -1; |
| 4364 | else if (n1->in(i) > n2->in(i)) return 1; |
| 4365 | } |
| 4366 | |
| 4367 | return 0; |
| 4368 | } |
| 4369 | |
| 4370 | int Compile::cmp_expensive_nodes(Node** n1p, Node** n2p) { |
| 4371 | Node* n1 = *n1p; |
| 4372 | Node* n2 = *n2p; |
| 4373 | |
| 4374 | return cmp_expensive_nodes(n1, n2); |
| 4375 | } |
| 4376 | |
| 4377 | void Compile::sort_expensive_nodes() { |
| 4378 | if (!expensive_nodes_sorted()) { |
| 4379 | _expensive_nodes.sort(cmp_expensive_nodes); |
| 4380 | } |
| 4381 | } |
| 4382 | |
| 4383 | bool Compile::expensive_nodes_sorted() const { |
| 4384 | for (int i = 1; i < _expensive_nodes.length(); i++) { |
| 4385 | if (cmp_expensive_nodes(_expensive_nodes.adr_at(i), _expensive_nodes.adr_at(i-1)) < 0) { |
| 4386 | return false; |
| 4387 | } |
| 4388 | } |
| 4389 | return true; |
| 4390 | } |
| 4391 | |
| 4392 | bool Compile::should_optimize_expensive_nodes(PhaseIterGVN &igvn) { |
| 4393 | if (_expensive_nodes.length() == 0) { |
| 4394 | return false; |
| 4395 | } |
| 4396 | |
| 4397 | assert(OptimizeExpensiveOps, "optimization off?")do { if (!(OptimizeExpensiveOps)) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4397, "assert(" "OptimizeExpensiveOps" ") failed", "optimization off?" ); ::breakpoint(); } } while (0); |
| 4398 | |
| 4399 | // Take this opportunity to remove dead nodes from the list |
| 4400 | int j = 0; |
| 4401 | for (int i = 0; i < _expensive_nodes.length(); i++) { |
| 4402 | Node* n = _expensive_nodes.at(i); |
| 4403 | if (!n->is_unreachable(igvn)) { |
| 4404 | assert(n->is_expensive(), "should be expensive")do { if (!(n->is_expensive())) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4404, "assert(" "n->is_expensive()" ") failed", "should be expensive" ); ::breakpoint(); } } while (0); |
| 4405 | _expensive_nodes.at_put(j, n); |
| 4406 | j++; |
| 4407 | } |
| 4408 | } |
| 4409 | _expensive_nodes.trunc_to(j); |
| 4410 | |
| 4411 | // Then sort the list so that similar nodes are next to each other |
| 4412 | // and check for at least two nodes of identical kind with same data |
| 4413 | // inputs. |
| 4414 | sort_expensive_nodes(); |
| 4415 | |
| 4416 | for (int i = 0; i < _expensive_nodes.length()-1; i++) { |
| 4417 | if (cmp_expensive_nodes(_expensive_nodes.adr_at(i), _expensive_nodes.adr_at(i+1)) == 0) { |
| 4418 | return true; |
| 4419 | } |
| 4420 | } |
| 4421 | |
| 4422 | return false; |
| 4423 | } |
| 4424 | |
| 4425 | void Compile::cleanup_expensive_nodes(PhaseIterGVN &igvn) { |
| 4426 | if (_expensive_nodes.length() == 0) { |
| 4427 | return; |
| 4428 | } |
| 4429 | |
| 4430 | assert(OptimizeExpensiveOps, "optimization off?")do { if (!(OptimizeExpensiveOps)) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4430, "assert(" "OptimizeExpensiveOps" ") failed", "optimization off?" ); ::breakpoint(); } } while (0); |
| 4431 | |
| 4432 | // Sort to bring similar nodes next to each other and clear the |
| 4433 | // control input of nodes for which there's only a single copy. |
| 4434 | sort_expensive_nodes(); |
| 4435 | |
| 4436 | int j = 0; |
| 4437 | int identical = 0; |
| 4438 | int i = 0; |
| 4439 | bool modified = false; |
| 4440 | for (; i < _expensive_nodes.length()-1; i++) { |
| 4441 | assert(j <= i, "can't write beyond current index")do { if (!(j <= i)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4441, "assert(" "j <= i" ") failed", "can't write beyond current index" ); ::breakpoint(); } } while (0); |
| 4442 | if (_expensive_nodes.at(i)->Opcode() == _expensive_nodes.at(i+1)->Opcode()) { |
| 4443 | identical++; |
| 4444 | _expensive_nodes.at_put(j++, _expensive_nodes.at(i)); |
| 4445 | continue; |
| 4446 | } |
| 4447 | if (identical > 0) { |
| 4448 | _expensive_nodes.at_put(j++, _expensive_nodes.at(i)); |
| 4449 | identical = 0; |
| 4450 | } else { |
| 4451 | Node* n = _expensive_nodes.at(i); |
| 4452 | igvn.replace_input_of(n, 0, NULL__null); |
| 4453 | igvn.hash_insert(n); |
| 4454 | modified = true; |
| 4455 | } |
| 4456 | } |
| 4457 | if (identical > 0) { |
| 4458 | _expensive_nodes.at_put(j++, _expensive_nodes.at(i)); |
| 4459 | } else if (_expensive_nodes.length() >= 1) { |
| 4460 | Node* n = _expensive_nodes.at(i); |
| 4461 | igvn.replace_input_of(n, 0, NULL__null); |
| 4462 | igvn.hash_insert(n); |
| 4463 | modified = true; |
| 4464 | } |
| 4465 | _expensive_nodes.trunc_to(j); |
| 4466 | if (modified) { |
| 4467 | igvn.optimize(); |
| 4468 | } |
| 4469 | } |
| 4470 | |
| 4471 | void Compile::add_expensive_node(Node * n) { |
| 4472 | assert(!_expensive_nodes.contains(n), "duplicate entry in expensive list")do { if (!(!_expensive_nodes.contains(n))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4472, "assert(" "!_expensive_nodes.contains(n)" ") failed", "duplicate entry in expensive list"); ::breakpoint(); } } while (0); |
| 4473 | assert(n->is_expensive(), "expensive nodes with non-null control here only")do { if (!(n->is_expensive())) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4473, "assert(" "n->is_expensive()" ") failed", "expensive nodes with non-null control here only" ); ::breakpoint(); } } while (0); |
| 4474 | assert(!n->is_CFG() && !n->is_Mem(), "no cfg or memory nodes here")do { if (!(!n->is_CFG() && !n->is_Mem())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4474, "assert(" "!n->is_CFG() && !n->is_Mem()" ") failed", "no cfg or memory nodes here"); ::breakpoint(); } } while (0); |
| 4475 | if (OptimizeExpensiveOps) { |
| 4476 | _expensive_nodes.append(n); |
| 4477 | } else { |
| 4478 | // Clear control input and let IGVN optimize expensive nodes if |
| 4479 | // OptimizeExpensiveOps is off. |
| 4480 | n->set_req(0, NULL__null); |
| 4481 | } |
| 4482 | } |
| 4483 | |
| 4484 | /** |
| 4485 | * Track coarsened Lock and Unlock nodes. |
| 4486 | */ |
| 4487 | |
| 4488 | class Lock_List : public Node_List { |
| 4489 | uint _origin_cnt; |
| 4490 | public: |
| 4491 | Lock_List(Arena *a, uint cnt) : Node_List(a), _origin_cnt(cnt) {} |
| 4492 | uint origin_cnt() const { return _origin_cnt; } |
| 4493 | }; |
| 4494 | |
| 4495 | void Compile::add_coarsened_locks(GrowableArray<AbstractLockNode*>& locks) { |
| 4496 | int length = locks.length(); |
| 4497 | if (length > 0) { |
| 4498 | // Have to keep this list until locks elimination during Macro nodes elimination. |
| 4499 | Lock_List* locks_list = new (comp_arena()) Lock_List(comp_arena(), length); |
| 4500 | for (int i = 0; i < length; i++) { |
| 4501 | AbstractLockNode* lock = locks.at(i); |
| 4502 | assert(lock->is_coarsened(), "expecting only coarsened AbstractLock nodes, but got '%s'[%d] node", lock->Name(), lock->_idx)do { if (!(lock->is_coarsened())) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4502, "assert(" "lock->is_coarsened()" ") failed", "expecting only coarsened AbstractLock nodes, but got '%s'[%d] node" , lock->Name(), lock->_idx); ::breakpoint(); } } while ( 0); |
| 4503 | locks_list->push(lock); |
| 4504 | } |
| 4505 | _coarsened_locks.append(locks_list); |
| 4506 | } |
| 4507 | } |
| 4508 | |
| 4509 | void Compile::remove_useless_coarsened_locks(Unique_Node_List& useful) { |
| 4510 | int count = coarsened_count(); |
| 4511 | for (int i = 0; i < count; i++) { |
| 4512 | Node_List* locks_list = _coarsened_locks.at(i); |
| 4513 | for (uint j = 0; j < locks_list->size(); j++) { |
| 4514 | Node* lock = locks_list->at(j); |
| 4515 | assert(lock->is_AbstractLock(), "sanity")do { if (!(lock->is_AbstractLock())) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4515, "assert(" "lock->is_AbstractLock()" ") failed", "sanity" ); ::breakpoint(); } } while (0); |
| 4516 | if (!useful.member(lock)) { |
| 4517 | locks_list->yank(lock); |
| 4518 | } |
| 4519 | } |
| 4520 | } |
| 4521 | } |
| 4522 | |
| 4523 | void Compile::remove_coarsened_lock(Node* n) { |
| 4524 | if (n->is_AbstractLock()) { |
| 4525 | int count = coarsened_count(); |
| 4526 | for (int i = 0; i < count; i++) { |
| 4527 | Node_List* locks_list = _coarsened_locks.at(i); |
| 4528 | locks_list->yank(n); |
| 4529 | } |
| 4530 | } |
| 4531 | } |
| 4532 | |
| 4533 | bool Compile::coarsened_locks_consistent() { |
| 4534 | int count = coarsened_count(); |
| 4535 | for (int i = 0; i < count; i++) { |
| 4536 | bool unbalanced = false; |
| 4537 | bool modified = false; // track locks kind modifications |
| 4538 | Lock_List* locks_list = (Lock_List*)_coarsened_locks.at(i); |
| 4539 | uint size = locks_list->size(); |
| 4540 | if (size == 0) { |
| 4541 | unbalanced = false; // All locks were eliminated - good |
| 4542 | } else if (size != locks_list->origin_cnt()) { |
| 4543 | unbalanced = true; // Some locks were removed from list |
| 4544 | } else { |
| 4545 | for (uint j = 0; j < size; j++) { |
| 4546 | Node* lock = locks_list->at(j); |
| 4547 | // All nodes in group should have the same state (modified or not) |
| 4548 | if (!lock->as_AbstractLock()->is_coarsened()) { |
| 4549 | if (j == 0) { |
| 4550 | // first on list was modified, the rest should be too for consistency |
| 4551 | modified = true; |
| 4552 | } else if (!modified) { |
| 4553 | // this lock was modified but previous locks on the list were not |
| 4554 | unbalanced = true; |
| 4555 | break; |
| 4556 | } |
| 4557 | } else if (modified) { |
| 4558 | // previous locks on list were modified but not this lock |
| 4559 | unbalanced = true; |
| 4560 | break; |
| 4561 | } |
| 4562 | } |
| 4563 | } |
| 4564 | if (unbalanced) { |
| 4565 | // unbalanced monitor enter/exit - only some [un]lock nodes were removed or modified |
| 4566 | #ifdef ASSERT1 |
| 4567 | if (PrintEliminateLocks) { |
| 4568 | tty->print_cr("=== unbalanced coarsened locks ==="); |
| 4569 | for (uint l = 0; l < size; l++) { |
| 4570 | locks_list->at(l)->dump(); |
| 4571 | } |
| 4572 | } |
| 4573 | #endif |
| 4574 | record_failure(C2Compiler::retry_no_locks_coarsening()); |
| 4575 | return false; |
| 4576 | } |
| 4577 | } |
| 4578 | return true; |
| 4579 | } |
| 4580 | |
| 4581 | /** |
| 4582 | * Remove the speculative part of types and clean up the graph |
| 4583 | */ |
| 4584 | void Compile::remove_speculative_types(PhaseIterGVN &igvn) { |
| 4585 | if (UseTypeSpeculation) { |
| 4586 | Unique_Node_List worklist; |
| 4587 | worklist.push(root()); |
| 4588 | int modified = 0; |
| 4589 | // Go over all type nodes that carry a speculative type, drop the |
| 4590 | // speculative part of the type and enqueue the node for an igvn |
| 4591 | // which may optimize it out. |
| 4592 | for (uint next = 0; next < worklist.size(); ++next) { |
| 4593 | Node *n = worklist.at(next); |
| 4594 | if (n->is_Type()) { |
| 4595 | TypeNode* tn = n->as_Type(); |
| 4596 | const Type* t = tn->type(); |
| 4597 | const Type* t_no_spec = t->remove_speculative(); |
| 4598 | if (t_no_spec != t) { |
| 4599 | bool in_hash = igvn.hash_delete(n); |
| 4600 | assert(in_hash, "node should be in igvn hash table")do { if (!(in_hash)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4600, "assert(" "in_hash" ") failed", "node should be in igvn hash table" ); ::breakpoint(); } } while (0); |
| 4601 | tn->set_type(t_no_spec); |
| 4602 | igvn.hash_insert(n); |
| 4603 | igvn._worklist.push(n); // give it a chance to go away |
| 4604 | modified++; |
| 4605 | } |
| 4606 | } |
| 4607 | // Iterate over outs - endless loops is unreachable from below |
| 4608 | for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
| 4609 | Node *m = n->fast_out(i); |
| 4610 | if (not_a_node(m)) { |
| 4611 | continue; |
| 4612 | } |
| 4613 | worklist.push(m); |
| 4614 | } |
| 4615 | } |
| 4616 | // Drop the speculative part of all types in the igvn's type table |
| 4617 | igvn.remove_speculative_types(); |
| 4618 | if (modified > 0) { |
| 4619 | igvn.optimize(); |
| 4620 | } |
| 4621 | #ifdef ASSERT1 |
| 4622 | // Verify that after the IGVN is over no speculative type has resurfaced |
| 4623 | worklist.clear(); |
| 4624 | worklist.push(root()); |
| 4625 | for (uint next = 0; next < worklist.size(); ++next) { |
| 4626 | Node *n = worklist.at(next); |
| 4627 | const Type* t = igvn.type_or_null(n); |
| 4628 | assert((t == NULL) || (t == t->remove_speculative()), "no more speculative types")do { if (!((t == __null) || (t == t->remove_speculative()) )) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4628, "assert(" "(t == __null) || (t == t->remove_speculative())" ") failed", "no more speculative types"); ::breakpoint(); } } while (0); |
| 4629 | if (n->is_Type()) { |
| 4630 | t = n->as_Type()->type(); |
| 4631 | assert(t == t->remove_speculative(), "no more speculative types")do { if (!(t == t->remove_speculative())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4631, "assert(" "t == t->remove_speculative()" ") failed" , "no more speculative types"); ::breakpoint(); } } while (0); |
| 4632 | } |
| 4633 | // Iterate over outs - endless loops is unreachable from below |
| 4634 | for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
| 4635 | Node *m = n->fast_out(i); |
| 4636 | if (not_a_node(m)) { |
| 4637 | continue; |
| 4638 | } |
| 4639 | worklist.push(m); |
| 4640 | } |
| 4641 | } |
| 4642 | igvn.check_no_speculative_types(); |
| 4643 | #endif |
| 4644 | } |
| 4645 | } |
| 4646 | |
| 4647 | // Auxiliary methods to support randomized stressing/fuzzing. |
| 4648 | |
| 4649 | int Compile::random() { |
| 4650 | _stress_seed = os::next_random(_stress_seed); |
| 4651 | return static_cast<int>(_stress_seed); |
| 4652 | } |
| 4653 | |
| 4654 | // This method can be called the arbitrary number of times, with current count |
| 4655 | // as the argument. The logic allows selecting a single candidate from the |
| 4656 | // running list of candidates as follows: |
| 4657 | // int count = 0; |
| 4658 | // Cand* selected = null; |
| 4659 | // while(cand = cand->next()) { |
| 4660 | // if (randomized_select(++count)) { |
| 4661 | // selected = cand; |
| 4662 | // } |
| 4663 | // } |
| 4664 | // |
| 4665 | // Including count equalizes the chances any candidate is "selected". |
| 4666 | // This is useful when we don't have the complete list of candidates to choose |
| 4667 | // from uniformly. In this case, we need to adjust the randomicity of the |
| 4668 | // selection, or else we will end up biasing the selection towards the latter |
| 4669 | // candidates. |
| 4670 | // |
| 4671 | // Quick back-envelope calculation shows that for the list of n candidates |
| 4672 | // the equal probability for the candidate to persist as "best" can be |
| 4673 | // achieved by replacing it with "next" k-th candidate with the probability |
| 4674 | // of 1/k. It can be easily shown that by the end of the run, the |
| 4675 | // probability for any candidate is converged to 1/n, thus giving the |
| 4676 | // uniform distribution among all the candidates. |
| 4677 | // |
| 4678 | // We don't care about the domain size as long as (RANDOMIZED_DOMAIN / count) is large. |
| 4679 | #define RANDOMIZED_DOMAIN_POW29 29 |
| 4680 | #define RANDOMIZED_DOMAIN(1 << 29) (1 << RANDOMIZED_DOMAIN_POW29) |
| 4681 | #define RANDOMIZED_DOMAIN_MASK((1 << (29 + 1)) - 1) ((1 << (RANDOMIZED_DOMAIN_POW29 + 1)) - 1) |
| 4682 | bool Compile::randomized_select(int count) { |
| 4683 | assert(count > 0, "only positive")do { if (!(count > 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4683, "assert(" "count > 0" ") failed", "only positive") ; ::breakpoint(); } } while (0); |
| 4684 | return (random() & RANDOMIZED_DOMAIN_MASK((1 << (29 + 1)) - 1)) < (RANDOMIZED_DOMAIN(1 << 29) / count); |
| 4685 | } |
| 4686 | |
| 4687 | CloneMap& Compile::clone_map() { return _clone_map; } |
| 4688 | void Compile::set_clone_map(Dict* d) { _clone_map._dict = d; } |
| 4689 | |
| 4690 | void NodeCloneInfo::dump() const { |
| 4691 | tty->print(" {%d:%d} ", idx(), gen()); |
| 4692 | } |
| 4693 | |
| 4694 | void CloneMap::clone(Node* old, Node* nnn, int gen) { |
| 4695 | uint64_t val = value(old->_idx); |
| 4696 | NodeCloneInfo cio(val); |
| 4697 | assert(val != 0, "old node should be in the map")do { if (!(val != 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4697, "assert(" "val != 0" ") failed", "old node should be in the map" ); ::breakpoint(); } } while (0); |
| 4698 | NodeCloneInfo cin(cio.idx(), gen + cio.gen()); |
| 4699 | insert(nnn->_idx, cin.get()); |
| 4700 | #ifndef PRODUCT |
| 4701 | if (is_debug()) { |
| 4702 | tty->print_cr("CloneMap::clone inserted node %d info {%d:%d} into CloneMap", nnn->_idx, cin.idx(), cin.gen()); |
| 4703 | } |
| 4704 | #endif |
| 4705 | } |
| 4706 | |
| 4707 | void CloneMap::verify_insert_and_clone(Node* old, Node* nnn, int gen) { |
| 4708 | NodeCloneInfo cio(value(old->_idx)); |
| 4709 | if (cio.get() == 0) { |
| 4710 | cio.set(old->_idx, 0); |
| 4711 | insert(old->_idx, cio.get()); |
| 4712 | #ifndef PRODUCT |
| 4713 | if (is_debug()) { |
| 4714 | tty->print_cr("CloneMap::verify_insert_and_clone inserted node %d info {%d:%d} into CloneMap", old->_idx, cio.idx(), cio.gen()); |
| 4715 | } |
| 4716 | #endif |
| 4717 | } |
| 4718 | clone(old, nnn, gen); |
| 4719 | } |
| 4720 | |
| 4721 | int CloneMap::max_gen() const { |
| 4722 | int g = 0; |
| 4723 | DictI di(_dict); |
| 4724 | for(; di.test(); ++di) { |
| 4725 | int t = gen(di._key); |
| 4726 | if (g < t) { |
| 4727 | g = t; |
| 4728 | #ifndef PRODUCT |
| 4729 | if (is_debug()) { |
| 4730 | tty->print_cr("CloneMap::max_gen() update max=%d from %d", g, _2_node_idx_t(di._key)); |
| 4731 | } |
| 4732 | #endif |
| 4733 | } |
| 4734 | } |
| 4735 | return g; |
| 4736 | } |
| 4737 | |
| 4738 | void CloneMap::dump(node_idx_t key) const { |
| 4739 | uint64_t val = value(key); |
| 4740 | if (val != 0) { |
| 4741 | NodeCloneInfo ni(val); |
| 4742 | ni.dump(); |
| 4743 | } |
| 4744 | } |
| 4745 | |
| 4746 | // Move Allocate nodes to the start of the list |
| 4747 | void Compile::sort_macro_nodes() { |
| 4748 | int count = macro_count(); |
| 4749 | int allocates = 0; |
| 4750 | for (int i = 0; i < count; i++) { |
| 4751 | Node* n = macro_node(i); |
| 4752 | if (n->is_Allocate()) { |
| 4753 | if (i != allocates) { |
| 4754 | Node* tmp = macro_node(allocates); |
| 4755 | _macro_nodes.at_put(allocates, n); |
| 4756 | _macro_nodes.at_put(i, tmp); |
| 4757 | } |
| 4758 | allocates++; |
| 4759 | } |
| 4760 | } |
| 4761 | } |
| 4762 | |
| 4763 | void Compile::print_method(CompilerPhaseType cpt, const char *name, int level) { |
| 4764 | EventCompilerPhase event; |
| 4765 | if (event.should_commit()) { |
| 4766 | CompilerEvent::PhaseEvent::post(event, C->_latest_stage_start_counter, cpt, C->_compile_id, level); |
| 4767 | } |
| 4768 | #ifndef PRODUCT |
| 4769 | if (should_print(level)) { |
| 4770 | _printer->print_method(name, level); |
| 4771 | } |
| 4772 | #endif |
| 4773 | C->_latest_stage_start_counter.stamp(); |
| 4774 | } |
| 4775 | |
| 4776 | void Compile::print_method(CompilerPhaseType cpt, int level, int idx) { |
| 4777 | char output[1024]; |
| 4778 | #ifndef PRODUCT |
| 4779 | if (idx != 0) { |
| 4780 | jio_snprintf(output, sizeof(output), "%s:%d", CompilerPhaseTypeHelper::to_string(cpt), idx); |
| 4781 | } else { |
| 4782 | jio_snprintf(output, sizeof(output), "%s", CompilerPhaseTypeHelper::to_string(cpt)); |
| 4783 | } |
| 4784 | #endif |
| 4785 | print_method(cpt, output, level); |
| 4786 | } |
| 4787 | |
| 4788 | void Compile::print_method(CompilerPhaseType cpt, Node* n, int level) { |
| 4789 | ResourceMark rm; |
| 4790 | stringStream ss; |
| 4791 | ss.print_raw(CompilerPhaseTypeHelper::to_string(cpt)); |
| 4792 | if (n != NULL__null) { |
| 4793 | ss.print(": %d %s ", n->_idx, NodeClassNames[n->Opcode()]); |
| 4794 | } else { |
| 4795 | ss.print_raw(": NULL"); |
| 4796 | } |
| 4797 | C->print_method(cpt, ss.as_string(), level); |
| 4798 | } |
| 4799 | |
| 4800 | void Compile::end_method(int level) { |
| 4801 | EventCompilerPhase event; |
| 4802 | if (event.should_commit()) { |
| 4803 | CompilerEvent::PhaseEvent::post(event, C->_latest_stage_start_counter, PHASE_END, C->_compile_id, level); |
| 4804 | } |
| 4805 | |
| 4806 | #ifndef PRODUCT |
| 4807 | if (_method != NULL__null && should_print(level)) { |
| 4808 | _printer->end_method(); |
| 4809 | } |
| 4810 | #endif |
| 4811 | } |
| 4812 | |
| 4813 | |
| 4814 | #ifndef PRODUCT |
| 4815 | IdealGraphPrinter* Compile::_debug_file_printer = NULL__null; |
| 4816 | IdealGraphPrinter* Compile::_debug_network_printer = NULL__null; |
| 4817 | |
| 4818 | // Called from debugger. Prints method to the default file with the default phase name. |
| 4819 | // This works regardless of any Ideal Graph Visualizer flags set or not. |
| 4820 | void igv_print() { |
| 4821 | Compile::current()->igv_print_method_to_file(); |
| 4822 | } |
| 4823 | |
| 4824 | // Same as igv_print() above but with a specified phase name. |
| 4825 | void igv_print(const char* phase_name) { |
| 4826 | Compile::current()->igv_print_method_to_file(phase_name); |
| 4827 | } |
| 4828 | |
| 4829 | // Called from debugger. Prints method with the default phase name to the default network or the one specified with |
| 4830 | // the network flags for the Ideal Graph Visualizer, or to the default file depending on the 'network' argument. |
| 4831 | // This works regardless of any Ideal Graph Visualizer flags set or not. |
| 4832 | void igv_print(bool network) { |
| 4833 | if (network) { |
| 4834 | Compile::current()->igv_print_method_to_network(); |
| 4835 | } else { |
| 4836 | Compile::current()->igv_print_method_to_file(); |
| 4837 | } |
| 4838 | } |
| 4839 | |
| 4840 | // Same as igv_print(bool network) above but with a specified phase name. |
| 4841 | void igv_print(bool network, const char* phase_name) { |
| 4842 | if (network) { |
| 4843 | Compile::current()->igv_print_method_to_network(phase_name); |
| 4844 | } else { |
| 4845 | Compile::current()->igv_print_method_to_file(phase_name); |
| 4846 | } |
| 4847 | } |
| 4848 | |
| 4849 | // Called from debugger. Normal write to the default _printer. Only works if Ideal Graph Visualizer printing flags are set. |
| 4850 | void igv_print_default() { |
| 4851 | Compile::current()->print_method(PHASE_DEBUG, 0); |
| 4852 | } |
| 4853 | |
| 4854 | // Called from debugger, especially when replaying a trace in which the program state cannot be altered like with rr replay. |
| 4855 | // A method is appended to an existing default file with the default phase name. This means that igv_append() must follow |
| 4856 | // an earlier igv_print(*) call which sets up the file. This works regardless of any Ideal Graph Visualizer flags set or not. |
| 4857 | void igv_append() { |
| 4858 | Compile::current()->igv_print_method_to_file("Debug", true); |
| 4859 | } |
| 4860 | |
| 4861 | // Same as igv_append() above but with a specified phase name. |
| 4862 | void igv_append(const char* phase_name) { |
| 4863 | Compile::current()->igv_print_method_to_file(phase_name, true); |
| 4864 | } |
| 4865 | |
| 4866 | void Compile::igv_print_method_to_file(const char* phase_name, bool append) { |
| 4867 | const char* file_name = "custom_debug.xml"; |
| 4868 | if (_debug_file_printer == NULL__null) { |
| 4869 | _debug_file_printer = new IdealGraphPrinter(C, file_name, append); |
| 4870 | } else { |
| 4871 | _debug_file_printer->update_compiled_method(C->method()); |
| 4872 | } |
| 4873 | tty->print_cr("Method %s to %s", append ? "appended" : "printed", file_name); |
| 4874 | _debug_file_printer->print(phase_name, (Node*)C->root()); |
| 4875 | } |
| 4876 | |
| 4877 | void Compile::igv_print_method_to_network(const char* phase_name) { |
| 4878 | if (_debug_network_printer == NULL__null) { |
| 4879 | _debug_network_printer = new IdealGraphPrinter(C); |
| 4880 | } else { |
| 4881 | _debug_network_printer->update_compiled_method(C->method()); |
| 4882 | } |
| 4883 | tty->print_cr("Method printed over network stream to IGV"); |
| 4884 | _debug_network_printer->print(phase_name, (Node*)C->root()); |
| 4885 | } |
| 4886 | #endif |
| 4887 | |
| 4888 | void Compile::add_native_invoker(RuntimeStub* stub) { |
| 4889 | _native_invokers.append(stub); |
| 4890 | } |
| 4891 | |
| 4892 | Node* Compile::narrow_value(BasicType bt, Node* value, const Type* type, PhaseGVN* phase, bool transform_res) { |
| 4893 | if (type != NULL__null && phase->type(value)->higher_equal(type)) { |
| 4894 | return value; |
| 4895 | } |
| 4896 | Node* result = NULL__null; |
| 4897 | if (bt == T_BYTE) { |
| 4898 | result = phase->transform(new LShiftINode(value, phase->intcon(24))); |
| 4899 | result = new RShiftINode(result, phase->intcon(24)); |
| 4900 | } else if (bt == T_BOOLEAN) { |
| 4901 | result = new AndINode(value, phase->intcon(0xFF)); |
| 4902 | } else if (bt == T_CHAR) { |
| 4903 | result = new AndINode(value,phase->intcon(0xFFFF)); |
| 4904 | } else { |
| 4905 | assert(bt == T_SHORT, "unexpected narrow type")do { if (!(bt == T_SHORT)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/opto/compile.cpp" , 4905, "assert(" "bt == T_SHORT" ") failed", "unexpected narrow type" ); ::breakpoint(); } } while (0); |
| 4906 | result = phase->transform(new LShiftINode(value, phase->intcon(16))); |
| 4907 | result = new RShiftINode(result, phase->intcon(16)); |
| 4908 | } |
| 4909 | if (transform_res) { |
| 4910 | result = phase->transform(result); |
| 4911 | } |
| 4912 | return result; |
| 4913 | } |
| 4914 |