| File: | jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp |
| Warning: | line 349, column 11 Value stored to 'mark_inputs' is never read |
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| 1 | /* |
| 2 | * Copyright (c) 2015, 2021, Red Hat, Inc. 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 | |
| 27 | #include "classfile/javaClasses.hpp" |
| 28 | #include "gc/shenandoah/c2/shenandoahSupport.hpp" |
| 29 | #include "gc/shenandoah/c2/shenandoahBarrierSetC2.hpp" |
| 30 | #include "gc/shenandoah/shenandoahBarrierSetAssembler.hpp" |
| 31 | #include "gc/shenandoah/shenandoahForwarding.hpp" |
| 32 | #include "gc/shenandoah/shenandoahHeap.hpp" |
| 33 | #include "gc/shenandoah/shenandoahHeapRegion.hpp" |
| 34 | #include "gc/shenandoah/shenandoahRuntime.hpp" |
| 35 | #include "gc/shenandoah/shenandoahThreadLocalData.hpp" |
| 36 | #include "opto/arraycopynode.hpp" |
| 37 | #include "opto/block.hpp" |
| 38 | #include "opto/callnode.hpp" |
| 39 | #include "opto/castnode.hpp" |
| 40 | #include "opto/movenode.hpp" |
| 41 | #include "opto/phaseX.hpp" |
| 42 | #include "opto/rootnode.hpp" |
| 43 | #include "opto/runtime.hpp" |
| 44 | #include "opto/subnode.hpp" |
| 45 | |
| 46 | bool ShenandoahBarrierC2Support::expand(Compile* C, PhaseIterGVN& igvn) { |
| 47 | ShenandoahBarrierSetC2State* state = ShenandoahBarrierSetC2::bsc2()->state(); |
| 48 | if ((state->iu_barriers_count() + |
| 49 | state->load_reference_barriers_count()) > 0) { |
| 50 | assert(C->post_loop_opts_phase(), "no loop opts allowed")do { if (!(C->post_loop_opts_phase())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 50, "assert(" "C->post_loop_opts_phase()" ") failed", "no loop opts allowed" ); ::breakpoint(); } } while (0); |
| 51 | C->reset_post_loop_opts_phase(); // ... but we know what we are doing |
| 52 | bool attempt_more_loopopts = ShenandoahLoopOptsAfterExpansion; |
| 53 | C->clear_major_progress(); |
| 54 | PhaseIdealLoop::optimize(igvn, LoopOptsShenandoahExpand); |
| 55 | if (C->failing()) return false; |
| 56 | PhaseIdealLoop::verify(igvn); |
| 57 | if (attempt_more_loopopts) { |
| 58 | C->set_major_progress(); |
| 59 | if (!C->optimize_loops(igvn, LoopOptsShenandoahPostExpand)) { |
| 60 | return false; |
| 61 | } |
| 62 | C->clear_major_progress(); |
| 63 | |
| 64 | C->process_for_post_loop_opts_igvn(igvn); |
| 65 | } |
| 66 | C->set_post_loop_opts_phase(); // now for real! |
| 67 | } |
| 68 | return true; |
| 69 | } |
| 70 | |
| 71 | bool ShenandoahBarrierC2Support::is_gc_state_test(Node* iff, int mask) { |
| 72 | if (!UseShenandoahGC) { |
| 73 | return false; |
| 74 | } |
| 75 | assert(iff->is_If(), "bad input")do { if (!(iff->is_If())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 75, "assert(" "iff->is_If()" ") failed", "bad input"); :: breakpoint(); } } while (0); |
| 76 | if (iff->Opcode() != Op_If) { |
| 77 | return false; |
| 78 | } |
| 79 | Node* bol = iff->in(1); |
| 80 | if (!bol->is_Bool() || bol->as_Bool()->_test._test != BoolTest::ne) { |
| 81 | return false; |
| 82 | } |
| 83 | Node* cmp = bol->in(1); |
| 84 | if (cmp->Opcode() != Op_CmpI) { |
| 85 | return false; |
| 86 | } |
| 87 | Node* in1 = cmp->in(1); |
| 88 | Node* in2 = cmp->in(2); |
| 89 | if (in2->find_int_con(-1) != 0) { |
| 90 | return false; |
| 91 | } |
| 92 | if (in1->Opcode() != Op_AndI) { |
| 93 | return false; |
| 94 | } |
| 95 | in2 = in1->in(2); |
| 96 | if (in2->find_int_con(-1) != mask) { |
| 97 | return false; |
| 98 | } |
| 99 | in1 = in1->in(1); |
| 100 | |
| 101 | return is_gc_state_load(in1); |
| 102 | } |
| 103 | |
| 104 | bool ShenandoahBarrierC2Support::is_heap_stable_test(Node* iff) { |
| 105 | return is_gc_state_test(iff, ShenandoahHeap::HAS_FORWARDED); |
| 106 | } |
| 107 | |
| 108 | bool ShenandoahBarrierC2Support::is_gc_state_load(Node *n) { |
| 109 | if (!UseShenandoahGC) { |
| 110 | return false; |
| 111 | } |
| 112 | if (n->Opcode() != Op_LoadB && n->Opcode() != Op_LoadUB) { |
| 113 | return false; |
| 114 | } |
| 115 | Node* addp = n->in(MemNode::Address); |
| 116 | if (!addp->is_AddP()) { |
| 117 | return false; |
| 118 | } |
| 119 | Node* base = addp->in(AddPNode::Address); |
| 120 | Node* off = addp->in(AddPNode::Offset); |
| 121 | if (base->Opcode() != Op_ThreadLocal) { |
| 122 | return false; |
| 123 | } |
| 124 | if (off->find_intptr_t_confind_long_con(-1) != in_bytes(ShenandoahThreadLocalData::gc_state_offset())) { |
| 125 | return false; |
| 126 | } |
| 127 | return true; |
| 128 | } |
| 129 | |
| 130 | bool ShenandoahBarrierC2Support::has_safepoint_between(Node* start, Node* stop, PhaseIdealLoop *phase) { |
| 131 | assert(phase->is_dominator(stop, start), "bad inputs")do { if (!(phase->is_dominator(stop, start))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 131, "assert(" "phase->is_dominator(stop, start)" ") failed" , "bad inputs"); ::breakpoint(); } } while (0); |
| 132 | ResourceMark rm; |
| 133 | Unique_Node_List wq; |
| 134 | wq.push(start); |
| 135 | for (uint next = 0; next < wq.size(); next++) { |
| 136 | Node *m = wq.at(next); |
| 137 | if (m == stop) { |
| 138 | continue; |
| 139 | } |
| 140 | if (m->is_SafePoint() && !m->is_CallLeaf()) { |
| 141 | return true; |
| 142 | } |
| 143 | if (m->is_Region()) { |
| 144 | for (uint i = 1; i < m->req(); i++) { |
| 145 | wq.push(m->in(i)); |
| 146 | } |
| 147 | } else { |
| 148 | wq.push(m->in(0)); |
| 149 | } |
| 150 | } |
| 151 | return false; |
| 152 | } |
| 153 | |
| 154 | #ifdef ASSERT1 |
| 155 | bool ShenandoahBarrierC2Support::verify_helper(Node* in, Node_Stack& phis, VectorSet& visited, verify_type t, bool trace, Unique_Node_List& barriers_used) { |
| 156 | assert(phis.size() == 0, "")do { if (!(phis.size() == 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 156, "assert(" "phis.size() == 0" ") failed", ""); ::breakpoint (); } } while (0); |
| 157 | |
| 158 | while (true) { |
| 159 | if (in->bottom_type() == TypePtr::NULL_PTR) { |
| 160 | if (trace) {tty->print_cr("NULL");} |
| 161 | } else if (!in->bottom_type()->make_ptr()->make_oopptr()) { |
| 162 | if (trace) {tty->print_cr("Non oop");} |
| 163 | } else { |
| 164 | if (in->is_ConstraintCast()) { |
| 165 | in = in->in(1); |
| 166 | continue; |
| 167 | } else if (in->is_AddP()) { |
| 168 | assert(!in->in(AddPNode::Address)->is_top(), "no raw memory access")do { if (!(!in->in(AddPNode::Address)->is_top())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 168, "assert(" "!in->in(AddPNode::Address)->is_top()" ") failed", "no raw memory access"); ::breakpoint(); } } while (0); |
| 169 | in = in->in(AddPNode::Address); |
| 170 | continue; |
| 171 | } else if (in->is_Con()) { |
| 172 | if (trace) { |
| 173 | tty->print("Found constant"); |
| 174 | in->dump(); |
| 175 | } |
| 176 | } else if (in->Opcode() == Op_Parm) { |
| 177 | if (trace) { |
| 178 | tty->print("Found argument"); |
| 179 | } |
| 180 | } else if (in->Opcode() == Op_CreateEx) { |
| 181 | if (trace) { |
| 182 | tty->print("Found create-exception"); |
| 183 | } |
| 184 | } else if (in->Opcode() == Op_LoadP && in->adr_type() == TypeRawPtr::BOTTOM) { |
| 185 | if (trace) { |
| 186 | tty->print("Found raw LoadP (OSR argument?)"); |
| 187 | } |
| 188 | } else if (in->Opcode() == Op_ShenandoahLoadReferenceBarrier) { |
| 189 | if (t == ShenandoahOopStore) { |
| 190 | uint i = 0; |
| 191 | for (; i < phis.size(); i++) { |
| 192 | Node* n = phis.node_at(i); |
| 193 | if (n->Opcode() == Op_ShenandoahIUBarrier) { |
| 194 | break; |
| 195 | } |
| 196 | } |
| 197 | if (i == phis.size()) { |
| 198 | return false; |
| 199 | } |
| 200 | } |
| 201 | barriers_used.push(in); |
| 202 | if (trace) {tty->print("Found barrier"); in->dump();} |
| 203 | } else if (in->Opcode() == Op_ShenandoahIUBarrier) { |
| 204 | if (t != ShenandoahOopStore) { |
| 205 | in = in->in(1); |
| 206 | continue; |
| 207 | } |
| 208 | if (trace) {tty->print("Found enqueue barrier"); in->dump();} |
| 209 | phis.push(in, in->req()); |
| 210 | in = in->in(1); |
| 211 | continue; |
| 212 | } else if (in->is_Proj() && in->in(0)->is_Allocate()) { |
| 213 | if (trace) { |
| 214 | tty->print("Found alloc"); |
| 215 | in->in(0)->dump(); |
| 216 | } |
| 217 | } else if (in->is_Proj() && (in->in(0)->Opcode() == Op_CallStaticJava || in->in(0)->Opcode() == Op_CallDynamicJava)) { |
| 218 | if (trace) { |
| 219 | tty->print("Found Java call"); |
| 220 | } |
| 221 | } else if (in->is_Phi()) { |
| 222 | if (!visited.test_set(in->_idx)) { |
| 223 | if (trace) {tty->print("Pushed phi:"); in->dump();} |
| 224 | phis.push(in, 2); |
| 225 | in = in->in(1); |
| 226 | continue; |
| 227 | } |
| 228 | if (trace) {tty->print("Already seen phi:"); in->dump();} |
| 229 | } else if (in->Opcode() == Op_CMoveP || in->Opcode() == Op_CMoveN) { |
| 230 | if (!visited.test_set(in->_idx)) { |
| 231 | if (trace) {tty->print("Pushed cmovep:"); in->dump();} |
| 232 | phis.push(in, CMoveNode::IfTrue); |
| 233 | in = in->in(CMoveNode::IfFalse); |
| 234 | continue; |
| 235 | } |
| 236 | if (trace) {tty->print("Already seen cmovep:"); in->dump();} |
| 237 | } else if (in->Opcode() == Op_EncodeP || in->Opcode() == Op_DecodeN) { |
| 238 | in = in->in(1); |
| 239 | continue; |
| 240 | } else { |
| 241 | return false; |
| 242 | } |
| 243 | } |
| 244 | bool cont = false; |
| 245 | while (phis.is_nonempty()) { |
| 246 | uint idx = phis.index(); |
| 247 | Node* phi = phis.node(); |
| 248 | if (idx >= phi->req()) { |
| 249 | if (trace) {tty->print("Popped phi:"); phi->dump();} |
| 250 | phis.pop(); |
| 251 | continue; |
| 252 | } |
| 253 | if (trace) {tty->print("Next entry(%d) for phi:", idx); phi->dump();} |
| 254 | in = phi->in(idx); |
| 255 | phis.set_index(idx+1); |
| 256 | cont = true; |
| 257 | break; |
| 258 | } |
| 259 | if (!cont) { |
| 260 | break; |
| 261 | } |
| 262 | } |
| 263 | return true; |
| 264 | } |
| 265 | |
| 266 | void ShenandoahBarrierC2Support::report_verify_failure(const char* msg, Node* n1, Node* n2) { |
| 267 | if (n1 != NULL__null) { |
| 268 | n1->dump(+10); |
| 269 | } |
| 270 | if (n2 != NULL__null) { |
| 271 | n2->dump(+10); |
| 272 | } |
| 273 | fatal("%s", msg)do { (*g_assert_poison) = 'X';; report_fatal(INTERNAL_ERROR, "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 273, "%s", msg); ::breakpoint(); } while (0); |
| 274 | } |
| 275 | |
| 276 | void ShenandoahBarrierC2Support::verify(RootNode* root) { |
| 277 | ResourceMark rm; |
| 278 | Unique_Node_List wq; |
| 279 | GrowableArray<Node*> barriers; |
| 280 | Unique_Node_List barriers_used; |
| 281 | Node_Stack phis(0); |
| 282 | VectorSet visited; |
| 283 | const bool trace = false; |
| 284 | const bool verify_no_useless_barrier = false; |
| 285 | |
| 286 | wq.push(root); |
| 287 | for (uint next = 0; next < wq.size(); next++) { |
| 288 | Node *n = wq.at(next); |
| 289 | if (n->is_Load()) { |
| 290 | const bool trace = false; |
| 291 | if (trace) {tty->print("Verifying"); n->dump();} |
| 292 | if (n->Opcode() == Op_LoadRange || n->Opcode() == Op_LoadKlass || n->Opcode() == Op_LoadNKlass) { |
| 293 | if (trace) {tty->print_cr("Load range/klass");} |
| 294 | } else { |
| 295 | const TypePtr* adr_type = n->as_Load()->adr_type(); |
| 296 | |
| 297 | if (adr_type->isa_oopptr() && adr_type->is_oopptr()->offset() == oopDesc::mark_offset_in_bytes()) { |
| 298 | if (trace) {tty->print_cr("Mark load");} |
| 299 | } else if (adr_type->isa_instptr() && |
| 300 | adr_type->is_instptr()->klass()->is_subtype_of(Compile::current()->env()->Reference_klass()) && |
| 301 | adr_type->is_instptr()->offset() == java_lang_ref_Reference::referent_offset()) { |
| 302 | if (trace) {tty->print_cr("Reference.get()");} |
| 303 | } else if (!verify_helper(n->in(MemNode::Address), phis, visited, ShenandoahLoad, trace, barriers_used)) { |
| 304 | report_verify_failure("Shenandoah verification: Load should have barriers", n); |
| 305 | } |
| 306 | } |
| 307 | } else if (n->is_Store()) { |
| 308 | const bool trace = false; |
| 309 | |
| 310 | if (trace) {tty->print("Verifying"); n->dump();} |
| 311 | if (n->in(MemNode::ValueIn)->bottom_type()->make_oopptr()) { |
| 312 | Node* adr = n->in(MemNode::Address); |
| 313 | bool verify = true; |
| 314 | |
| 315 | if (adr->is_AddP() && adr->in(AddPNode::Base)->is_top()) { |
| 316 | adr = adr->in(AddPNode::Address); |
| 317 | if (adr->is_AddP()) { |
| 318 | assert(adr->in(AddPNode::Base)->is_top(), "")do { if (!(adr->in(AddPNode::Base)->is_top())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 318, "assert(" "adr->in(AddPNode::Base)->is_top()" ") failed" , ""); ::breakpoint(); } } while (0); |
| 319 | adr = adr->in(AddPNode::Address); |
| 320 | if (adr->Opcode() == Op_LoadP && |
| 321 | adr->in(MemNode::Address)->in(AddPNode::Base)->is_top() && |
| 322 | adr->in(MemNode::Address)->in(AddPNode::Address)->Opcode() == Op_ThreadLocal && |
| 323 | adr->in(MemNode::Address)->in(AddPNode::Offset)->find_intptr_t_confind_long_con(-1) == in_bytes(ShenandoahThreadLocalData::satb_mark_queue_buffer_offset())) { |
| 324 | if (trace) {tty->print_cr("SATB prebarrier");} |
| 325 | verify = false; |
| 326 | } |
| 327 | } |
| 328 | } |
| 329 | |
| 330 | if (verify && !verify_helper(n->in(MemNode::ValueIn), phis, visited, ShenandoahIUBarrier ? ShenandoahOopStore : ShenandoahValue, trace, barriers_used)) { |
| 331 | report_verify_failure("Shenandoah verification: Store should have barriers", n); |
| 332 | } |
| 333 | } |
| 334 | if (!verify_helper(n->in(MemNode::Address), phis, visited, ShenandoahStore, trace, barriers_used)) { |
| 335 | report_verify_failure("Shenandoah verification: Store (address) should have barriers", n); |
| 336 | } |
| 337 | } else if (n->Opcode() == Op_CmpP) { |
| 338 | const bool trace = false; |
| 339 | |
| 340 | Node* in1 = n->in(1); |
| 341 | Node* in2 = n->in(2); |
| 342 | if (in1->bottom_type()->isa_oopptr()) { |
| 343 | if (trace) {tty->print("Verifying"); n->dump();} |
| 344 | |
| 345 | bool mark_inputs = false; |
| 346 | if (in1->bottom_type() == TypePtr::NULL_PTR || in2->bottom_type() == TypePtr::NULL_PTR || |
| 347 | (in1->is_Con() || in2->is_Con())) { |
| 348 | if (trace) {tty->print_cr("Comparison against a constant");} |
| 349 | mark_inputs = true; |
Value stored to 'mark_inputs' is never read | |
| 350 | } else if ((in1->is_CheckCastPP() && in1->in(1)->is_Proj() && in1->in(1)->in(0)->is_Allocate()) || |
| 351 | (in2->is_CheckCastPP() && in2->in(1)->is_Proj() && in2->in(1)->in(0)->is_Allocate())) { |
| 352 | if (trace) {tty->print_cr("Comparison with newly alloc'ed object");} |
| 353 | mark_inputs = true; |
| 354 | } else { |
| 355 | assert(in2->bottom_type()->isa_oopptr(), "")do { if (!(in2->bottom_type()->isa_oopptr())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 355, "assert(" "in2->bottom_type()->isa_oopptr()" ") failed" , ""); ::breakpoint(); } } while (0); |
| 356 | |
| 357 | if (!verify_helper(in1, phis, visited, ShenandoahStore, trace, barriers_used) || |
| 358 | !verify_helper(in2, phis, visited, ShenandoahStore, trace, barriers_used)) { |
| 359 | report_verify_failure("Shenandoah verification: Cmp should have barriers", n); |
| 360 | } |
| 361 | } |
| 362 | if (verify_no_useless_barrier && |
| 363 | mark_inputs && |
| 364 | (!verify_helper(in1, phis, visited, ShenandoahValue, trace, barriers_used) || |
| 365 | !verify_helper(in2, phis, visited, ShenandoahValue, trace, barriers_used))) { |
| 366 | phis.clear(); |
| 367 | visited.reset(); |
| 368 | } |
| 369 | } |
| 370 | } else if (n->is_LoadStore()) { |
| 371 | if (n->in(MemNode::ValueIn)->bottom_type()->make_ptr() && |
| 372 | !verify_helper(n->in(MemNode::ValueIn), phis, visited, ShenandoahIUBarrier ? ShenandoahOopStore : ShenandoahValue, trace, barriers_used)) { |
| 373 | report_verify_failure("Shenandoah verification: LoadStore (value) should have barriers", n); |
| 374 | } |
| 375 | |
| 376 | if (n->in(MemNode::Address)->bottom_type()->make_oopptr() && !verify_helper(n->in(MemNode::Address), phis, visited, ShenandoahStore, trace, barriers_used)) { |
| 377 | report_verify_failure("Shenandoah verification: LoadStore (address) should have barriers", n); |
| 378 | } |
| 379 | } else if (n->Opcode() == Op_CallLeafNoFP || n->Opcode() == Op_CallLeaf) { |
| 380 | CallNode* call = n->as_Call(); |
| 381 | |
| 382 | static struct { |
| 383 | const char* name; |
| 384 | struct { |
| 385 | int pos; |
| 386 | verify_type t; |
| 387 | } args[6]; |
| 388 | } calls[] = { |
| 389 | "aescrypt_encryptBlock", |
| 390 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahStore }, { TypeFunc::Parms+2, ShenandoahLoad }, |
| 391 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 392 | "aescrypt_decryptBlock", |
| 393 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahStore }, { TypeFunc::Parms+2, ShenandoahLoad }, |
| 394 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 395 | "multiplyToLen", |
| 396 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+2, ShenandoahLoad }, { TypeFunc::Parms+4, ShenandoahStore }, |
| 397 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 398 | "squareToLen", |
| 399 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+2, ShenandoahLoad }, { -1, ShenandoahNone}, |
| 400 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 401 | "montgomery_multiply", |
| 402 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahLoad }, { TypeFunc::Parms+2, ShenandoahLoad }, |
| 403 | { TypeFunc::Parms+6, ShenandoahStore }, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 404 | "montgomery_square", |
| 405 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahLoad }, { TypeFunc::Parms+5, ShenandoahStore }, |
| 406 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 407 | "mulAdd", |
| 408 | { { TypeFunc::Parms, ShenandoahStore }, { TypeFunc::Parms+1, ShenandoahLoad }, { -1, ShenandoahNone}, |
| 409 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 410 | "vectorizedMismatch", |
| 411 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahLoad }, { -1, ShenandoahNone}, |
| 412 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 413 | "updateBytesCRC32", |
| 414 | { { TypeFunc::Parms+1, ShenandoahLoad }, { -1, ShenandoahNone}, { -1, ShenandoahNone}, |
| 415 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 416 | "updateBytesAdler32", |
| 417 | { { TypeFunc::Parms+1, ShenandoahLoad }, { -1, ShenandoahNone}, { -1, ShenandoahNone}, |
| 418 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 419 | "updateBytesCRC32C", |
| 420 | { { TypeFunc::Parms+1, ShenandoahLoad }, { TypeFunc::Parms+3, ShenandoahLoad}, { -1, ShenandoahNone}, |
| 421 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 422 | "counterMode_AESCrypt", |
| 423 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahStore }, { TypeFunc::Parms+2, ShenandoahLoad }, |
| 424 | { TypeFunc::Parms+3, ShenandoahStore }, { TypeFunc::Parms+5, ShenandoahStore }, { TypeFunc::Parms+6, ShenandoahStore } }, |
| 425 | "cipherBlockChaining_encryptAESCrypt", |
| 426 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahStore }, { TypeFunc::Parms+2, ShenandoahLoad }, |
| 427 | { TypeFunc::Parms+3, ShenandoahLoad }, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 428 | "cipherBlockChaining_decryptAESCrypt", |
| 429 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahStore }, { TypeFunc::Parms+2, ShenandoahLoad }, |
| 430 | { TypeFunc::Parms+3, ShenandoahLoad }, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 431 | "shenandoah_clone_barrier", |
| 432 | { { TypeFunc::Parms, ShenandoahLoad }, { -1, ShenandoahNone}, { -1, ShenandoahNone}, |
| 433 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 434 | "ghash_processBlocks", |
| 435 | { { TypeFunc::Parms, ShenandoahStore }, { TypeFunc::Parms+1, ShenandoahLoad }, { TypeFunc::Parms+2, ShenandoahLoad }, |
| 436 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 437 | "sha1_implCompress", |
| 438 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahStore }, { -1, ShenandoahNone }, |
| 439 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 440 | "sha256_implCompress", |
| 441 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahStore }, { -1, ShenandoahNone }, |
| 442 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 443 | "sha512_implCompress", |
| 444 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahStore }, { -1, ShenandoahNone }, |
| 445 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 446 | "sha1_implCompressMB", |
| 447 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahStore }, { -1, ShenandoahNone }, |
| 448 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 449 | "sha256_implCompressMB", |
| 450 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahStore }, { -1, ShenandoahNone }, |
| 451 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 452 | "sha512_implCompressMB", |
| 453 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+1, ShenandoahStore }, { -1, ShenandoahNone }, |
| 454 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 455 | "encodeBlock", |
| 456 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+3, ShenandoahStore }, { -1, ShenandoahNone }, |
| 457 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 458 | "decodeBlock", |
| 459 | { { TypeFunc::Parms, ShenandoahLoad }, { TypeFunc::Parms+3, ShenandoahStore }, { -1, ShenandoahNone }, |
| 460 | { -1, ShenandoahNone}, { -1, ShenandoahNone}, { -1, ShenandoahNone} }, |
| 461 | }; |
| 462 | |
| 463 | if (call->is_call_to_arraycopystub()) { |
| 464 | Node* dest = NULL__null; |
| 465 | const TypeTuple* args = n->as_Call()->_tf->domain(); |
| 466 | for (uint i = TypeFunc::Parms, j = 0; i < args->cnt(); i++) { |
| 467 | if (args->field_at(i)->isa_ptr()) { |
| 468 | j++; |
| 469 | if (j == 2) { |
| 470 | dest = n->in(i); |
| 471 | break; |
| 472 | } |
| 473 | } |
| 474 | } |
| 475 | if (!verify_helper(n->in(TypeFunc::Parms), phis, visited, ShenandoahLoad, trace, barriers_used) || |
| 476 | !verify_helper(dest, phis, visited, ShenandoahStore, trace, barriers_used)) { |
| 477 | report_verify_failure("Shenandoah verification: ArrayCopy should have barriers", n); |
| 478 | } |
| 479 | } else if (strlen(call->_name) > 5 && |
| 480 | !strcmp(call->_name + strlen(call->_name) - 5, "_fill")) { |
| 481 | if (!verify_helper(n->in(TypeFunc::Parms), phis, visited, ShenandoahStore, trace, barriers_used)) { |
| 482 | report_verify_failure("Shenandoah verification: _fill should have barriers", n); |
| 483 | } |
| 484 | } else if (!strcmp(call->_name, "shenandoah_wb_pre")) { |
| 485 | // skip |
| 486 | } else { |
| 487 | const int calls_len = sizeof(calls) / sizeof(calls[0]); |
| 488 | int i = 0; |
| 489 | for (; i < calls_len; i++) { |
| 490 | if (!strcmp(calls[i].name, call->_name)) { |
| 491 | break; |
| 492 | } |
| 493 | } |
| 494 | if (i != calls_len) { |
| 495 | const uint args_len = sizeof(calls[0].args) / sizeof(calls[0].args[0]); |
| 496 | for (uint j = 0; j < args_len; j++) { |
| 497 | int pos = calls[i].args[j].pos; |
| 498 | if (pos == -1) { |
| 499 | break; |
| 500 | } |
| 501 | if (!verify_helper(call->in(pos), phis, visited, calls[i].args[j].t, trace, barriers_used)) { |
| 502 | report_verify_failure("Shenandoah verification: intrinsic calls should have barriers", n); |
| 503 | } |
| 504 | } |
| 505 | for (uint j = TypeFunc::Parms; j < call->req(); j++) { |
| 506 | if (call->in(j)->bottom_type()->make_ptr() && |
| 507 | call->in(j)->bottom_type()->make_ptr()->isa_oopptr()) { |
| 508 | uint k = 0; |
| 509 | for (; k < args_len && calls[i].args[k].pos != (int)j; k++); |
| 510 | if (k == args_len) { |
| 511 | fatal("arg %d for call %s not covered", j, call->_name)do { (*g_assert_poison) = 'X';; report_fatal(INTERNAL_ERROR, "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 511, "arg %d for call %s not covered", j, call->_name); :: breakpoint(); } while (0); |
| 512 | } |
| 513 | } |
| 514 | } |
| 515 | } else { |
| 516 | for (uint j = TypeFunc::Parms; j < call->req(); j++) { |
| 517 | if (call->in(j)->bottom_type()->make_ptr() && |
| 518 | call->in(j)->bottom_type()->make_ptr()->isa_oopptr()) { |
| 519 | fatal("%s not covered", call->_name)do { (*g_assert_poison) = 'X';; report_fatal(INTERNAL_ERROR, "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 519, "%s not covered", call->_name); ::breakpoint(); } while (0); |
| 520 | } |
| 521 | } |
| 522 | } |
| 523 | } |
| 524 | } else if (n->Opcode() == Op_ShenandoahIUBarrier || n->Opcode() == Op_ShenandoahLoadReferenceBarrier) { |
| 525 | // skip |
| 526 | } else if (n->is_AddP() |
| 527 | || n->is_Phi() |
| 528 | || n->is_ConstraintCast() |
| 529 | || n->Opcode() == Op_Return |
| 530 | || n->Opcode() == Op_CMoveP |
| 531 | || n->Opcode() == Op_CMoveN |
| 532 | || n->Opcode() == Op_Rethrow |
| 533 | || n->is_MemBar() |
| 534 | || n->Opcode() == Op_Conv2B |
| 535 | || n->Opcode() == Op_SafePoint |
| 536 | || n->is_CallJava() |
| 537 | || n->Opcode() == Op_Unlock |
| 538 | || n->Opcode() == Op_EncodeP |
| 539 | || n->Opcode() == Op_DecodeN) { |
| 540 | // nothing to do |
| 541 | } else { |
| 542 | static struct { |
| 543 | int opcode; |
| 544 | struct { |
| 545 | int pos; |
| 546 | verify_type t; |
| 547 | } inputs[2]; |
| 548 | } others[] = { |
| 549 | Op_FastLock, |
| 550 | { { 1, ShenandoahLoad }, { -1, ShenandoahNone} }, |
| 551 | Op_Lock, |
| 552 | { { TypeFunc::Parms, ShenandoahLoad }, { -1, ShenandoahNone} }, |
| 553 | Op_ArrayCopy, |
| 554 | { { ArrayCopyNode::Src, ShenandoahLoad }, { ArrayCopyNode::Dest, ShenandoahStore } }, |
| 555 | Op_StrCompressedCopy, |
| 556 | { { 2, ShenandoahLoad }, { 3, ShenandoahStore } }, |
| 557 | Op_StrInflatedCopy, |
| 558 | { { 2, ShenandoahLoad }, { 3, ShenandoahStore } }, |
| 559 | Op_AryEq, |
| 560 | { { 2, ShenandoahLoad }, { 3, ShenandoahLoad } }, |
| 561 | Op_StrIndexOf, |
| 562 | { { 2, ShenandoahLoad }, { 4, ShenandoahLoad } }, |
| 563 | Op_StrComp, |
| 564 | { { 2, ShenandoahLoad }, { 4, ShenandoahLoad } }, |
| 565 | Op_StrEquals, |
| 566 | { { 2, ShenandoahLoad }, { 3, ShenandoahLoad } }, |
| 567 | Op_EncodeISOArray, |
| 568 | { { 2, ShenandoahLoad }, { 3, ShenandoahStore } }, |
| 569 | Op_HasNegatives, |
| 570 | { { 2, ShenandoahLoad }, { -1, ShenandoahNone} }, |
| 571 | Op_CastP2X, |
| 572 | { { 1, ShenandoahLoad }, { -1, ShenandoahNone} }, |
| 573 | Op_StrIndexOfChar, |
| 574 | { { 2, ShenandoahLoad }, { -1, ShenandoahNone } }, |
| 575 | }; |
| 576 | |
| 577 | const int others_len = sizeof(others) / sizeof(others[0]); |
| 578 | int i = 0; |
| 579 | for (; i < others_len; i++) { |
| 580 | if (others[i].opcode == n->Opcode()) { |
| 581 | break; |
| 582 | } |
| 583 | } |
| 584 | uint stop = n->is_Call() ? n->as_Call()->tf()->domain()->cnt() : n->req(); |
| 585 | if (i != others_len) { |
| 586 | const uint inputs_len = sizeof(others[0].inputs) / sizeof(others[0].inputs[0]); |
| 587 | for (uint j = 0; j < inputs_len; j++) { |
| 588 | int pos = others[i].inputs[j].pos; |
| 589 | if (pos == -1) { |
| 590 | break; |
| 591 | } |
| 592 | if (!verify_helper(n->in(pos), phis, visited, others[i].inputs[j].t, trace, barriers_used)) { |
| 593 | report_verify_failure("Shenandoah verification: intrinsic calls should have barriers", n); |
| 594 | } |
| 595 | } |
| 596 | for (uint j = 1; j < stop; j++) { |
| 597 | if (n->in(j) != NULL__null && n->in(j)->bottom_type()->make_ptr() && |
| 598 | n->in(j)->bottom_type()->make_ptr()->make_oopptr()) { |
| 599 | uint k = 0; |
| 600 | for (; k < inputs_len && others[i].inputs[k].pos != (int)j; k++); |
| 601 | if (k == inputs_len) { |
| 602 | fatal("arg %d for node %s not covered", j, n->Name())do { (*g_assert_poison) = 'X';; report_fatal(INTERNAL_ERROR, "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 602, "arg %d for node %s not covered", j, n->Name()); :: breakpoint(); } while (0); |
| 603 | } |
| 604 | } |
| 605 | } |
| 606 | } else { |
| 607 | for (uint j = 1; j < stop; j++) { |
| 608 | if (n->in(j) != NULL__null && n->in(j)->bottom_type()->make_ptr() && |
| 609 | n->in(j)->bottom_type()->make_ptr()->make_oopptr()) { |
| 610 | fatal("%s not covered", n->Name())do { (*g_assert_poison) = 'X';; report_fatal(INTERNAL_ERROR, "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 610, "%s not covered", n->Name()); ::breakpoint(); } while (0); |
| 611 | } |
| 612 | } |
| 613 | } |
| 614 | } |
| 615 | |
| 616 | if (n->is_SafePoint()) { |
| 617 | SafePointNode* sfpt = n->as_SafePoint(); |
| 618 | if (verify_no_useless_barrier && sfpt->jvms() != NULL__null) { |
| 619 | for (uint i = sfpt->jvms()->scloff(); i < sfpt->jvms()->endoff(); i++) { |
| 620 | if (!verify_helper(sfpt->in(i), phis, visited, ShenandoahLoad, trace, barriers_used)) { |
| 621 | phis.clear(); |
| 622 | visited.reset(); |
| 623 | } |
| 624 | } |
| 625 | } |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | if (verify_no_useless_barrier) { |
| 630 | for (int i = 0; i < barriers.length(); i++) { |
| 631 | Node* n = barriers.at(i); |
| 632 | if (!barriers_used.member(n)) { |
| 633 | tty->print("XXX useless barrier"); n->dump(-2); |
| 634 | ShouldNotReachHere()do { (*g_assert_poison) = 'X';; report_should_not_reach_here( "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 634); ::breakpoint(); } while (0); |
| 635 | } |
| 636 | } |
| 637 | } |
| 638 | } |
| 639 | #endif |
| 640 | |
| 641 | bool ShenandoahBarrierC2Support::is_dominator_same_ctrl(Node* c, Node* d, Node* n, PhaseIdealLoop* phase) { |
| 642 | // That both nodes have the same control is not sufficient to prove |
| 643 | // domination, verify that there's no path from d to n |
| 644 | ResourceMark rm; |
| 645 | Unique_Node_List wq; |
| 646 | wq.push(d); |
| 647 | for (uint next = 0; next < wq.size(); next++) { |
| 648 | Node *m = wq.at(next); |
| 649 | if (m == n) { |
| 650 | return false; |
| 651 | } |
| 652 | if (m->is_Phi() && m->in(0)->is_Loop()) { |
| 653 | assert(phase->ctrl_or_self(m->in(LoopNode::EntryControl)) != c, "following loop entry should lead to new control")do { if (!(phase->ctrl_or_self(m->in(LoopNode::EntryControl )) != c)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 653, "assert(" "phase->ctrl_or_self(m->in(LoopNode::EntryControl)) != c" ") failed", "following loop entry should lead to new control" ); ::breakpoint(); } } while (0); |
| 654 | } else { |
| 655 | if (m->is_Store() || m->is_LoadStore()) { |
| 656 | // Take anti-dependencies into account |
| 657 | Node* mem = m->in(MemNode::Memory); |
| 658 | for (DUIterator_Fast imax, i = mem->fast_outs(imax); i < imax; i++) { |
| 659 | Node* u = mem->fast_out(i); |
| 660 | if (u->is_Load() && phase->C->can_alias(m->adr_type(), phase->C->get_alias_index(u->adr_type())) && |
| 661 | phase->ctrl_or_self(u) == c) { |
| 662 | wq.push(u); |
| 663 | } |
| 664 | } |
| 665 | } |
| 666 | for (uint i = 0; i < m->req(); i++) { |
| 667 | if (m->in(i) != NULL__null && phase->ctrl_or_self(m->in(i)) == c) { |
| 668 | wq.push(m->in(i)); |
| 669 | } |
| 670 | } |
| 671 | } |
| 672 | } |
| 673 | return true; |
| 674 | } |
| 675 | |
| 676 | bool ShenandoahBarrierC2Support::is_dominator(Node* d_c, Node* n_c, Node* d, Node* n, PhaseIdealLoop* phase) { |
| 677 | if (d_c != n_c) { |
| 678 | return phase->is_dominator(d_c, n_c); |
| 679 | } |
| 680 | return is_dominator_same_ctrl(d_c, d, n, phase); |
| 681 | } |
| 682 | |
| 683 | Node* next_mem(Node* mem, int alias) { |
| 684 | Node* res = NULL__null; |
| 685 | if (mem->is_Proj()) { |
| 686 | res = mem->in(0); |
| 687 | } else if (mem->is_SafePoint() || mem->is_MemBar()) { |
| 688 | res = mem->in(TypeFunc::Memory); |
| 689 | } else if (mem->is_Phi()) { |
| 690 | res = mem->in(1); |
| 691 | } else if (mem->is_MergeMem()) { |
| 692 | res = mem->as_MergeMem()->memory_at(alias); |
| 693 | } else if (mem->is_Store() || mem->is_LoadStore() || mem->is_ClearArray()) { |
| 694 | assert(alias == Compile::AliasIdxRaw, "following raw memory can't lead to a barrier")do { if (!(alias == Compile::AliasIdxRaw)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 694, "assert(" "alias == Compile::AliasIdxRaw" ") failed", "following raw memory can't lead to a barrier" ); ::breakpoint(); } } while (0); |
| 695 | res = mem->in(MemNode::Memory); |
| 696 | } else { |
| 697 | #ifdef ASSERT1 |
| 698 | mem->dump(); |
| 699 | #endif |
| 700 | ShouldNotReachHere()do { (*g_assert_poison) = 'X';; report_should_not_reach_here( "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 700); ::breakpoint(); } while (0); |
| 701 | } |
| 702 | return res; |
| 703 | } |
| 704 | |
| 705 | Node* ShenandoahBarrierC2Support::no_branches(Node* c, Node* dom, bool allow_one_proj, PhaseIdealLoop* phase) { |
| 706 | Node* iffproj = NULL__null; |
| 707 | while (c != dom) { |
| 708 | Node* next = phase->idom(c); |
| 709 | assert(next->unique_ctrl_out() == c || c->is_Proj() || c->is_Region(), "multiple control flow out but no proj or region?")do { if (!(next->unique_ctrl_out() == c || c->is_Proj() || c->is_Region())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 709, "assert(" "next->unique_ctrl_out() == c || c->is_Proj() || c->is_Region()" ") failed", "multiple control flow out but no proj or region?" ); ::breakpoint(); } } while (0); |
| 710 | if (c->is_Region()) { |
| 711 | ResourceMark rm; |
| 712 | Unique_Node_List wq; |
| 713 | wq.push(c); |
| 714 | for (uint i = 0; i < wq.size(); i++) { |
| 715 | Node *n = wq.at(i); |
| 716 | if (n == next) { |
| 717 | continue; |
| 718 | } |
| 719 | if (n->is_Region()) { |
| 720 | for (uint j = 1; j < n->req(); j++) { |
| 721 | wq.push(n->in(j)); |
| 722 | } |
| 723 | } else { |
| 724 | wq.push(n->in(0)); |
| 725 | } |
| 726 | } |
| 727 | for (uint i = 0; i < wq.size(); i++) { |
| 728 | Node *n = wq.at(i); |
| 729 | assert(n->is_CFG(), "")do { if (!(n->is_CFG())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 729, "assert(" "n->is_CFG()" ") failed", ""); ::breakpoint (); } } while (0); |
| 730 | if (n->is_Multi()) { |
| 731 | for (DUIterator_Fast jmax, j = n->fast_outs(jmax); j < jmax; j++) { |
| 732 | Node* u = n->fast_out(j); |
| 733 | if (u->is_CFG()) { |
| 734 | if (!wq.member(u) && !u->as_Proj()->is_uncommon_trap_proj(Deoptimization::Reason_none)) { |
| 735 | return NodeSentinel(Node*)-1; |
| 736 | } |
| 737 | } |
| 738 | } |
| 739 | } |
| 740 | } |
| 741 | } else if (c->is_Proj()) { |
| 742 | if (c->is_IfProj()) { |
| 743 | if (c->as_Proj()->is_uncommon_trap_if_pattern(Deoptimization::Reason_none) != NULL__null) { |
| 744 | // continue; |
| 745 | } else { |
| 746 | if (!allow_one_proj) { |
| 747 | return NodeSentinel(Node*)-1; |
| 748 | } |
| 749 | if (iffproj == NULL__null) { |
| 750 | iffproj = c; |
| 751 | } else { |
| 752 | return NodeSentinel(Node*)-1; |
| 753 | } |
| 754 | } |
| 755 | } else if (c->Opcode() == Op_JumpProj) { |
| 756 | return NodeSentinel(Node*)-1; // unsupported |
| 757 | } else if (c->Opcode() == Op_CatchProj) { |
| 758 | return NodeSentinel(Node*)-1; // unsupported |
| 759 | } else if (c->Opcode() == Op_CProj && next->Opcode() == Op_NeverBranch) { |
| 760 | return NodeSentinel(Node*)-1; // unsupported |
| 761 | } else { |
| 762 | assert(next->unique_ctrl_out() == c, "unsupported branch pattern")do { if (!(next->unique_ctrl_out() == c)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 762, "assert(" "next->unique_ctrl_out() == c" ") failed" , "unsupported branch pattern"); ::breakpoint(); } } while (0 ); |
| 763 | } |
| 764 | } |
| 765 | c = next; |
| 766 | } |
| 767 | return iffproj; |
| 768 | } |
| 769 | |
| 770 | Node* ShenandoahBarrierC2Support::dom_mem(Node* mem, Node* ctrl, int alias, Node*& mem_ctrl, PhaseIdealLoop* phase) { |
| 771 | ResourceMark rm; |
| 772 | VectorSet wq; |
| 773 | wq.set(mem->_idx); |
| 774 | mem_ctrl = phase->ctrl_or_self(mem); |
| 775 | while (!phase->is_dominator(mem_ctrl, ctrl) || mem_ctrl == ctrl) { |
| 776 | mem = next_mem(mem, alias); |
| 777 | if (wq.test_set(mem->_idx)) { |
| 778 | return NULL__null; |
| 779 | } |
| 780 | mem_ctrl = phase->ctrl_or_self(mem); |
| 781 | } |
| 782 | if (mem->is_MergeMem()) { |
| 783 | mem = mem->as_MergeMem()->memory_at(alias); |
| 784 | mem_ctrl = phase->ctrl_or_self(mem); |
| 785 | } |
| 786 | return mem; |
| 787 | } |
| 788 | |
| 789 | Node* ShenandoahBarrierC2Support::find_bottom_mem(Node* ctrl, PhaseIdealLoop* phase) { |
| 790 | Node* mem = NULL__null; |
| 791 | Node* c = ctrl; |
| 792 | do { |
| 793 | if (c->is_Region()) { |
| 794 | for (DUIterator_Fast imax, i = c->fast_outs(imax); i < imax && mem == NULL__null; i++) { |
| 795 | Node* u = c->fast_out(i); |
| 796 | if (u->is_Phi() && u->bottom_type() == Type::MEMORY) { |
| 797 | if (u->adr_type() == TypePtr::BOTTOM) { |
| 798 | mem = u; |
| 799 | } |
| 800 | } |
| 801 | } |
| 802 | } else { |
| 803 | if (c->is_Call() && c->as_Call()->adr_type() != NULL__null) { |
| 804 | CallProjections projs; |
| 805 | c->as_Call()->extract_projections(&projs, true, false); |
| 806 | if (projs.fallthrough_memproj != NULL__null) { |
| 807 | if (projs.fallthrough_memproj->adr_type() == TypePtr::BOTTOM) { |
| 808 | if (projs.catchall_memproj == NULL__null) { |
| 809 | mem = projs.fallthrough_memproj; |
| 810 | } else { |
| 811 | if (phase->is_dominator(projs.fallthrough_catchproj, ctrl)) { |
| 812 | mem = projs.fallthrough_memproj; |
| 813 | } else { |
| 814 | assert(phase->is_dominator(projs.catchall_catchproj, ctrl), "one proj must dominate barrier")do { if (!(phase->is_dominator(projs.catchall_catchproj, ctrl ))) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 814, "assert(" "phase->is_dominator(projs.catchall_catchproj, ctrl)" ") failed", "one proj must dominate barrier"); ::breakpoint( ); } } while (0); |
| 815 | mem = projs.catchall_memproj; |
| 816 | } |
| 817 | } |
| 818 | } |
| 819 | } else { |
| 820 | Node* proj = c->as_Call()->proj_out(TypeFunc::Memory); |
| 821 | if (proj != NULL__null && |
| 822 | proj->adr_type() == TypePtr::BOTTOM) { |
| 823 | mem = proj; |
| 824 | } |
| 825 | } |
| 826 | } else { |
| 827 | for (DUIterator_Fast imax, i = c->fast_outs(imax); i < imax; i++) { |
| 828 | Node* u = c->fast_out(i); |
| 829 | if (u->is_Proj() && |
| 830 | u->bottom_type() == Type::MEMORY && |
| 831 | u->adr_type() == TypePtr::BOTTOM) { |
| 832 | assert(c->is_SafePoint() || c->is_MemBar() || c->is_Start(), "")do { if (!(c->is_SafePoint() || c->is_MemBar() || c-> is_Start())) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 832, "assert(" "c->is_SafePoint() || c->is_MemBar() || c->is_Start()" ") failed", ""); ::breakpoint(); } } while (0); |
| 833 | assert(mem == NULL, "only one proj")do { if (!(mem == __null)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 833, "assert(" "mem == __null" ") failed", "only one proj") ; ::breakpoint(); } } while (0); |
| 834 | mem = u; |
| 835 | } |
| 836 | } |
| 837 | assert(!c->is_Call() || c->as_Call()->adr_type() != NULL || mem == NULL, "no mem projection expected")do { if (!(!c->is_Call() || c->as_Call()->adr_type() != __null || mem == __null)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 837, "assert(" "!c->is_Call() || c->as_Call()->adr_type() != __null || mem == __null" ") failed", "no mem projection expected"); ::breakpoint(); } } while (0); |
| 838 | } |
| 839 | } |
| 840 | c = phase->idom(c); |
| 841 | } while (mem == NULL__null); |
| 842 | return mem; |
| 843 | } |
| 844 | |
| 845 | void ShenandoahBarrierC2Support::follow_barrier_uses(Node* n, Node* ctrl, Unique_Node_List& uses, PhaseIdealLoop* phase) { |
| 846 | for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
| 847 | Node* u = n->fast_out(i); |
| 848 | if (!u->is_CFG() && phase->get_ctrl(u) == ctrl && (!u->is_Phi() || !u->in(0)->is_Loop() || u->in(LoopNode::LoopBackControl) != n)) { |
| 849 | uses.push(u); |
| 850 | } |
| 851 | } |
| 852 | } |
| 853 | |
| 854 | static void hide_strip_mined_loop(OuterStripMinedLoopNode* outer, CountedLoopNode* inner, PhaseIdealLoop* phase) { |
| 855 | OuterStripMinedLoopEndNode* le = inner->outer_loop_end(); |
| 856 | Node* new_outer = new LoopNode(outer->in(LoopNode::EntryControl), outer->in(LoopNode::LoopBackControl)); |
| 857 | phase->register_control(new_outer, phase->get_loop(outer), outer->in(LoopNode::EntryControl)); |
| 858 | Node* new_le = new IfNode(le->in(0), le->in(1), le->_prob, le->_fcnt); |
| 859 | phase->register_control(new_le, phase->get_loop(le), le->in(0)); |
| 860 | phase->lazy_replace(outer, new_outer); |
| 861 | phase->lazy_replace(le, new_le); |
| 862 | inner->clear_strip_mined(); |
| 863 | } |
| 864 | |
| 865 | void ShenandoahBarrierC2Support::test_gc_state(Node*& ctrl, Node* raw_mem, Node*& test_fail_ctrl, |
| 866 | PhaseIdealLoop* phase, int flags) { |
| 867 | PhaseIterGVN& igvn = phase->igvn(); |
| 868 | Node* old_ctrl = ctrl; |
| 869 | |
| 870 | Node* thread = new ThreadLocalNode(); |
| 871 | Node* gc_state_offset = igvn.MakeConXlongcon(in_bytes(ShenandoahThreadLocalData::gc_state_offset())); |
| 872 | Node* gc_state_addr = new AddPNode(phase->C->top(), thread, gc_state_offset); |
| 873 | Node* gc_state = new LoadBNode(old_ctrl, raw_mem, gc_state_addr, |
| 874 | DEBUG_ONLY(phase->C->get_adr_type(Compile::AliasIdxRaw))phase->C->get_adr_type(Compile::AliasIdxRaw) NOT_DEBUG(NULL), |
| 875 | TypeInt::BYTE, MemNode::unordered); |
| 876 | Node* gc_state_and = new AndINode(gc_state, igvn.intcon(flags)); |
| 877 | Node* gc_state_cmp = new CmpINode(gc_state_and, igvn.zerocon(T_INT)); |
| 878 | Node* gc_state_bool = new BoolNode(gc_state_cmp, BoolTest::ne); |
| 879 | |
| 880 | IfNode* gc_state_iff = new IfNode(old_ctrl, gc_state_bool, PROB_UNLIKELY(0.999)(1.0f - (float)(0.999)), COUNT_UNKNOWN(-1.0f)); |
| 881 | ctrl = new IfTrueNode(gc_state_iff); |
| 882 | test_fail_ctrl = new IfFalseNode(gc_state_iff); |
| 883 | |
| 884 | IdealLoopTree* loop = phase->get_loop(old_ctrl); |
| 885 | phase->register_control(gc_state_iff, loop, old_ctrl); |
| 886 | phase->register_control(ctrl, loop, gc_state_iff); |
| 887 | phase->register_control(test_fail_ctrl, loop, gc_state_iff); |
| 888 | |
| 889 | phase->register_new_node(thread, old_ctrl); |
| 890 | phase->register_new_node(gc_state_addr, old_ctrl); |
| 891 | phase->register_new_node(gc_state, old_ctrl); |
| 892 | phase->register_new_node(gc_state_and, old_ctrl); |
| 893 | phase->register_new_node(gc_state_cmp, old_ctrl); |
| 894 | phase->register_new_node(gc_state_bool, old_ctrl); |
| 895 | |
| 896 | phase->set_ctrl(gc_state_offset, phase->C->root()); |
| 897 | |
| 898 | assert(is_gc_state_test(gc_state_iff, flags), "Should match the shape")do { if (!(is_gc_state_test(gc_state_iff, flags))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 898, "assert(" "is_gc_state_test(gc_state_iff, flags)" ") failed" , "Should match the shape"); ::breakpoint(); } } while (0); |
| 899 | } |
| 900 | |
| 901 | void ShenandoahBarrierC2Support::test_null(Node*& ctrl, Node* val, Node*& null_ctrl, PhaseIdealLoop* phase) { |
| 902 | Node* old_ctrl = ctrl; |
| 903 | PhaseIterGVN& igvn = phase->igvn(); |
| 904 | |
| 905 | const Type* val_t = igvn.type(val); |
| 906 | if (val_t->meet(TypePtr::NULL_PTR) == val_t) { |
| 907 | Node* null_cmp = new CmpPNode(val, igvn.zerocon(T_OBJECT)); |
| 908 | Node* null_test = new BoolNode(null_cmp, BoolTest::ne); |
| 909 | |
| 910 | IfNode* null_iff = new IfNode(old_ctrl, null_test, PROB_LIKELY(0.999)((float) (0.999)), COUNT_UNKNOWN(-1.0f)); |
| 911 | ctrl = new IfTrueNode(null_iff); |
| 912 | null_ctrl = new IfFalseNode(null_iff); |
| 913 | |
| 914 | IdealLoopTree* loop = phase->get_loop(old_ctrl); |
| 915 | phase->register_control(null_iff, loop, old_ctrl); |
| 916 | phase->register_control(ctrl, loop, null_iff); |
| 917 | phase->register_control(null_ctrl, loop, null_iff); |
| 918 | |
| 919 | phase->register_new_node(null_cmp, old_ctrl); |
| 920 | phase->register_new_node(null_test, old_ctrl); |
| 921 | } |
| 922 | } |
| 923 | |
| 924 | void ShenandoahBarrierC2Support::test_in_cset(Node*& ctrl, Node*& not_cset_ctrl, Node* val, Node* raw_mem, PhaseIdealLoop* phase) { |
| 925 | Node* old_ctrl = ctrl; |
| 926 | PhaseIterGVN& igvn = phase->igvn(); |
| 927 | |
| 928 | Node* raw_val = new CastP2XNode(old_ctrl, val); |
| 929 | Node* cset_idx = new URShiftXNodeURShiftLNode(raw_val, igvn.intcon(ShenandoahHeapRegion::region_size_bytes_shift_jint())); |
| 930 | |
| 931 | // Figure out the target cset address with raw pointer math. |
| 932 | // This avoids matching AddP+LoadB that would emit inefficient code. |
| 933 | // See JDK-8245465. |
| 934 | Node* cset_addr_ptr = igvn.makecon(TypeRawPtr::make(ShenandoahHeap::in_cset_fast_test_addr())); |
| 935 | Node* cset_addr = new CastP2XNode(old_ctrl, cset_addr_ptr); |
| 936 | Node* cset_load_addr = new AddXNodeAddLNode(cset_addr, cset_idx); |
| 937 | Node* cset_load_ptr = new CastX2PNode(cset_load_addr); |
| 938 | |
| 939 | Node* cset_load = new LoadBNode(old_ctrl, raw_mem, cset_load_ptr, |
| 940 | DEBUG_ONLY(phase->C->get_adr_type(Compile::AliasIdxRaw))phase->C->get_adr_type(Compile::AliasIdxRaw) NOT_DEBUG(NULL), |
| 941 | TypeInt::BYTE, MemNode::unordered); |
| 942 | Node* cset_cmp = new CmpINode(cset_load, igvn.zerocon(T_INT)); |
| 943 | Node* cset_bool = new BoolNode(cset_cmp, BoolTest::ne); |
| 944 | |
| 945 | IfNode* cset_iff = new IfNode(old_ctrl, cset_bool, PROB_UNLIKELY(0.999)(1.0f - (float)(0.999)), COUNT_UNKNOWN(-1.0f)); |
| 946 | ctrl = new IfTrueNode(cset_iff); |
| 947 | not_cset_ctrl = new IfFalseNode(cset_iff); |
| 948 | |
| 949 | IdealLoopTree *loop = phase->get_loop(old_ctrl); |
| 950 | phase->register_control(cset_iff, loop, old_ctrl); |
| 951 | phase->register_control(ctrl, loop, cset_iff); |
| 952 | phase->register_control(not_cset_ctrl, loop, cset_iff); |
| 953 | |
| 954 | phase->set_ctrl(cset_addr_ptr, phase->C->root()); |
| 955 | |
| 956 | phase->register_new_node(raw_val, old_ctrl); |
| 957 | phase->register_new_node(cset_idx, old_ctrl); |
| 958 | phase->register_new_node(cset_addr, old_ctrl); |
| 959 | phase->register_new_node(cset_load_addr, old_ctrl); |
| 960 | phase->register_new_node(cset_load_ptr, old_ctrl); |
| 961 | phase->register_new_node(cset_load, old_ctrl); |
| 962 | phase->register_new_node(cset_cmp, old_ctrl); |
| 963 | phase->register_new_node(cset_bool, old_ctrl); |
| 964 | } |
| 965 | |
| 966 | void ShenandoahBarrierC2Support::call_lrb_stub(Node*& ctrl, Node*& val, Node* load_addr, |
| 967 | DecoratorSet decorators, PhaseIdealLoop* phase) { |
| 968 | IdealLoopTree*loop = phase->get_loop(ctrl); |
| 969 | const TypePtr* obj_type = phase->igvn().type(val)->is_oopptr(); |
| 970 | |
| 971 | address calladdr = NULL__null; |
| 972 | const char* name = NULL__null; |
| 973 | bool is_strong = ShenandoahBarrierSet::is_strong_access(decorators); |
| 974 | bool is_weak = ShenandoahBarrierSet::is_weak_access(decorators); |
| 975 | bool is_phantom = ShenandoahBarrierSet::is_phantom_access(decorators); |
| 976 | bool is_native = ShenandoahBarrierSet::is_native_access(decorators); |
| 977 | bool is_narrow = UseCompressedOops && !is_native; |
| 978 | if (is_strong) { |
| 979 | if (is_narrow) { |
| 980 | calladdr = CAST_FROM_FN_PTR(address, ShenandoahRuntime::load_reference_barrier_strong_narrow)((address)((address_word)(ShenandoahRuntime::load_reference_barrier_strong_narrow ))); |
| 981 | name = "load_reference_barrier_strong_narrow"; |
| 982 | } else { |
| 983 | calladdr = CAST_FROM_FN_PTR(address, ShenandoahRuntime::load_reference_barrier_strong)((address)((address_word)(ShenandoahRuntime::load_reference_barrier_strong ))); |
| 984 | name = "load_reference_barrier_strong"; |
| 985 | } |
| 986 | } else if (is_weak) { |
| 987 | if (is_narrow) { |
| 988 | calladdr = CAST_FROM_FN_PTR(address, ShenandoahRuntime::load_reference_barrier_weak_narrow)((address)((address_word)(ShenandoahRuntime::load_reference_barrier_weak_narrow ))); |
| 989 | name = "load_reference_barrier_weak_narrow"; |
| 990 | } else { |
| 991 | calladdr = CAST_FROM_FN_PTR(address, ShenandoahRuntime::load_reference_barrier_weak)((address)((address_word)(ShenandoahRuntime::load_reference_barrier_weak ))); |
| 992 | name = "load_reference_barrier_weak"; |
| 993 | } |
| 994 | } else { |
| 995 | assert(is_phantom, "only remaining strength")do { if (!(is_phantom)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 995, "assert(" "is_phantom" ") failed", "only remaining strength" ); ::breakpoint(); } } while (0); |
| 996 | if (is_narrow) { |
| 997 | calladdr = CAST_FROM_FN_PTR(address, ShenandoahRuntime::load_reference_barrier_phantom_narrow)((address)((address_word)(ShenandoahRuntime::load_reference_barrier_phantom_narrow ))); |
| 998 | name = "load_reference_barrier_phantom_narrow"; |
| 999 | } else { |
| 1000 | calladdr = CAST_FROM_FN_PTR(address, ShenandoahRuntime::load_reference_barrier_phantom)((address)((address_word)(ShenandoahRuntime::load_reference_barrier_phantom ))); |
| 1001 | name = "load_reference_barrier_phantom"; |
| 1002 | } |
| 1003 | } |
| 1004 | Node* call = new CallLeafNode(ShenandoahBarrierSetC2::shenandoah_load_reference_barrier_Type(), calladdr, name, TypeRawPtr::BOTTOM); |
| 1005 | |
| 1006 | call->init_req(TypeFunc::Control, ctrl); |
| 1007 | call->init_req(TypeFunc::I_O, phase->C->top()); |
| 1008 | call->init_req(TypeFunc::Memory, phase->C->top()); |
| 1009 | call->init_req(TypeFunc::FramePtr, phase->C->top()); |
| 1010 | call->init_req(TypeFunc::ReturnAdr, phase->C->top()); |
| 1011 | call->init_req(TypeFunc::Parms, val); |
| 1012 | call->init_req(TypeFunc::Parms+1, load_addr); |
| 1013 | phase->register_control(call, loop, ctrl); |
| 1014 | ctrl = new ProjNode(call, TypeFunc::Control); |
| 1015 | phase->register_control(ctrl, loop, call); |
| 1016 | val = new ProjNode(call, TypeFunc::Parms); |
| 1017 | phase->register_new_node(val, call); |
| 1018 | val = new CheckCastPPNode(ctrl, val, obj_type); |
| 1019 | phase->register_new_node(val, ctrl); |
| 1020 | } |
| 1021 | |
| 1022 | void ShenandoahBarrierC2Support::fix_ctrl(Node* barrier, Node* region, const MemoryGraphFixer& fixer, Unique_Node_List& uses, Unique_Node_List& uses_to_ignore, uint last, PhaseIdealLoop* phase) { |
| 1023 | Node* ctrl = phase->get_ctrl(barrier); |
| 1024 | Node* init_raw_mem = fixer.find_mem(ctrl, barrier); |
| 1025 | |
| 1026 | // Update the control of all nodes that should be after the |
| 1027 | // barrier control flow |
| 1028 | uses.clear(); |
| 1029 | // Every node that is control dependent on the barrier's input |
| 1030 | // control will be after the expanded barrier. The raw memory (if |
| 1031 | // its memory is control dependent on the barrier's input control) |
| 1032 | // must stay above the barrier. |
| 1033 | uses_to_ignore.clear(); |
| 1034 | if (phase->has_ctrl(init_raw_mem) && phase->get_ctrl(init_raw_mem) == ctrl && !init_raw_mem->is_Phi()) { |
| 1035 | uses_to_ignore.push(init_raw_mem); |
| 1036 | } |
| 1037 | for (uint next = 0; next < uses_to_ignore.size(); next++) { |
| 1038 | Node *n = uses_to_ignore.at(next); |
| 1039 | for (uint i = 0; i < n->req(); i++) { |
| 1040 | Node* in = n->in(i); |
| 1041 | if (in != NULL__null && phase->has_ctrl(in) && phase->get_ctrl(in) == ctrl) { |
| 1042 | uses_to_ignore.push(in); |
| 1043 | } |
| 1044 | } |
| 1045 | } |
| 1046 | for (DUIterator_Fast imax, i = ctrl->fast_outs(imax); i < imax; i++) { |
| 1047 | Node* u = ctrl->fast_out(i); |
| 1048 | if (u->_idx < last && |
| 1049 | u != barrier && |
| 1050 | !uses_to_ignore.member(u) && |
| 1051 | (u->in(0) != ctrl || (!u->is_Region() && !u->is_Phi())) && |
| 1052 | (ctrl->Opcode() != Op_CatchProj || u->Opcode() != Op_CreateEx)) { |
| 1053 | Node* old_c = phase->ctrl_or_self(u); |
| 1054 | Node* c = old_c; |
| 1055 | if (c != ctrl || |
| 1056 | is_dominator_same_ctrl(old_c, barrier, u, phase) || |
| 1057 | ShenandoahBarrierSetC2::is_shenandoah_state_load(u)) { |
| 1058 | phase->igvn().rehash_node_delayed(u); |
| 1059 | int nb = u->replace_edge(ctrl, region, &phase->igvn()); |
| 1060 | if (u->is_CFG()) { |
| 1061 | if (phase->idom(u) == ctrl) { |
| 1062 | phase->set_idom(u, region, phase->dom_depth(region)); |
| 1063 | } |
| 1064 | } else if (phase->get_ctrl(u) == ctrl) { |
| 1065 | assert(u != init_raw_mem, "should leave input raw mem above the barrier")do { if (!(u != init_raw_mem)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1065, "assert(" "u != init_raw_mem" ") failed", "should leave input raw mem above the barrier" ); ::breakpoint(); } } while (0); |
| 1066 | uses.push(u); |
| 1067 | } |
| 1068 | assert(nb == 1, "more than 1 ctrl input?")do { if (!(nb == 1)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1068, "assert(" "nb == 1" ") failed", "more than 1 ctrl input?" ); ::breakpoint(); } } while (0); |
| 1069 | --i, imax -= nb; |
| 1070 | } |
| 1071 | } |
| 1072 | } |
| 1073 | } |
| 1074 | |
| 1075 | static Node* create_phis_on_call_return(Node* ctrl, Node* c, Node* n, Node* n_clone, const CallProjections& projs, PhaseIdealLoop* phase) { |
| 1076 | Node* region = NULL__null; |
| 1077 | while (c != ctrl) { |
| 1078 | if (c->is_Region()) { |
| 1079 | region = c; |
| 1080 | } |
| 1081 | c = phase->idom(c); |
| 1082 | } |
| 1083 | assert(region != NULL, "")do { if (!(region != __null)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1083, "assert(" "region != __null" ") failed", ""); ::breakpoint (); } } while (0); |
| 1084 | Node* phi = new PhiNode(region, n->bottom_type()); |
| 1085 | for (uint j = 1; j < region->req(); j++) { |
| 1086 | Node* in = region->in(j); |
| 1087 | if (phase->is_dominator(projs.fallthrough_catchproj, in)) { |
| 1088 | phi->init_req(j, n); |
| 1089 | } else if (phase->is_dominator(projs.catchall_catchproj, in)) { |
| 1090 | phi->init_req(j, n_clone); |
| 1091 | } else { |
| 1092 | phi->init_req(j, create_phis_on_call_return(ctrl, in, n, n_clone, projs, phase)); |
| 1093 | } |
| 1094 | } |
| 1095 | phase->register_new_node(phi, region); |
| 1096 | return phi; |
| 1097 | } |
| 1098 | |
| 1099 | void ShenandoahBarrierC2Support::pin_and_expand(PhaseIdealLoop* phase) { |
| 1100 | ShenandoahBarrierSetC2State* state = ShenandoahBarrierSetC2::bsc2()->state(); |
| 1101 | |
| 1102 | Unique_Node_List uses; |
| 1103 | for (int i = 0; i < state->iu_barriers_count(); i++) { |
| 1104 | Node* barrier = state->iu_barrier(i); |
| 1105 | Node* ctrl = phase->get_ctrl(barrier); |
| 1106 | IdealLoopTree* loop = phase->get_loop(ctrl); |
| 1107 | Node* head = loop->head(); |
| 1108 | if (head->is_OuterStripMinedLoop()) { |
| 1109 | // Expanding a barrier here will break loop strip mining |
| 1110 | // verification. Transform the loop so the loop nest doesn't |
| 1111 | // appear as strip mined. |
| 1112 | OuterStripMinedLoopNode* outer = head->as_OuterStripMinedLoop(); |
| 1113 | hide_strip_mined_loop(outer, outer->unique_ctrl_out()->as_CountedLoop(), phase); |
| 1114 | } |
| 1115 | } |
| 1116 | |
| 1117 | Node_Stack stack(0); |
| 1118 | Node_List clones; |
| 1119 | for (int i = state->load_reference_barriers_count() - 1; i >= 0; i--) { |
| 1120 | ShenandoahLoadReferenceBarrierNode* lrb = state->load_reference_barrier(i); |
| 1121 | |
| 1122 | Node* ctrl = phase->get_ctrl(lrb); |
| 1123 | Node* val = lrb->in(ShenandoahLoadReferenceBarrierNode::ValueIn); |
| 1124 | |
| 1125 | CallStaticJavaNode* unc = NULL__null; |
| 1126 | Node* unc_ctrl = NULL__null; |
| 1127 | Node* uncasted_val = val; |
| 1128 | |
| 1129 | for (DUIterator_Fast imax, i = lrb->fast_outs(imax); i < imax; i++) { |
| 1130 | Node* u = lrb->fast_out(i); |
| 1131 | if (u->Opcode() == Op_CastPP && |
| 1132 | u->in(0) != NULL__null && |
| 1133 | phase->is_dominator(u->in(0), ctrl)) { |
| 1134 | const Type* u_t = phase->igvn().type(u); |
| 1135 | |
| 1136 | if (u_t->meet(TypePtr::NULL_PTR) != u_t && |
| 1137 | u->in(0)->Opcode() == Op_IfTrue && |
| 1138 | u->in(0)->as_Proj()->is_uncommon_trap_if_pattern(Deoptimization::Reason_none) && |
| 1139 | u->in(0)->in(0)->is_If() && |
| 1140 | u->in(0)->in(0)->in(1)->Opcode() == Op_Bool && |
| 1141 | u->in(0)->in(0)->in(1)->as_Bool()->_test._test == BoolTest::ne && |
| 1142 | u->in(0)->in(0)->in(1)->in(1)->Opcode() == Op_CmpP && |
| 1143 | u->in(0)->in(0)->in(1)->in(1)->in(1) == val && |
| 1144 | u->in(0)->in(0)->in(1)->in(1)->in(2)->bottom_type() == TypePtr::NULL_PTR) { |
| 1145 | IdealLoopTree* loop = phase->get_loop(ctrl); |
| 1146 | IdealLoopTree* unc_loop = phase->get_loop(u->in(0)); |
| 1147 | |
| 1148 | if (!unc_loop->is_member(loop)) { |
| 1149 | continue; |
| 1150 | } |
| 1151 | |
| 1152 | Node* branch = no_branches(ctrl, u->in(0), false, phase); |
| 1153 | assert(branch == NULL || branch == NodeSentinel, "was not looking for a branch")do { if (!(branch == __null || branch == (Node*)-1)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1153, "assert(" "branch == __null || branch == (Node*)-1" ") failed" , "was not looking for a branch"); ::breakpoint(); } } while ( 0); |
| 1154 | if (branch == NodeSentinel(Node*)-1) { |
| 1155 | continue; |
| 1156 | } |
| 1157 | |
| 1158 | Node* iff = u->in(0)->in(0); |
| 1159 | Node* bol = iff->in(1)->clone(); |
| 1160 | Node* cmp = bol->in(1)->clone(); |
| 1161 | cmp->set_req(1, lrb); |
| 1162 | bol->set_req(1, cmp); |
| 1163 | phase->igvn().replace_input_of(iff, 1, bol); |
| 1164 | phase->set_ctrl(lrb, iff->in(0)); |
| 1165 | phase->register_new_node(cmp, iff->in(0)); |
| 1166 | phase->register_new_node(bol, iff->in(0)); |
| 1167 | break; |
| 1168 | } |
| 1169 | } |
| 1170 | } |
| 1171 | if ((ctrl->is_Proj() && ctrl->in(0)->is_CallJava()) || ctrl->is_CallJava()) { |
| 1172 | CallNode* call = ctrl->is_Proj() ? ctrl->in(0)->as_CallJava() : ctrl->as_CallJava(); |
| 1173 | if (call->entry_point() == OptoRuntime::rethrow_stub()) { |
| 1174 | // The rethrow call may have too many projections to be |
| 1175 | // properly handled here. Given there's no reason for a |
| 1176 | // barrier to depend on the call, move it above the call |
| 1177 | stack.push(lrb, 0); |
| 1178 | do { |
| 1179 | Node* n = stack.node(); |
| 1180 | uint idx = stack.index(); |
| 1181 | if (idx < n->req()) { |
| 1182 | Node* in = n->in(idx); |
| 1183 | stack.set_index(idx+1); |
| 1184 | if (in != NULL__null) { |
| 1185 | if (phase->has_ctrl(in)) { |
| 1186 | if (phase->is_dominator(call, phase->get_ctrl(in))) { |
| 1187 | #ifdef ASSERT1 |
| 1188 | for (uint i = 0; i < stack.size(); i++) { |
| 1189 | assert(stack.node_at(i) != in, "node shouldn't have been seen yet")do { if (!(stack.node_at(i) != in)) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1189, "assert(" "stack.node_at(i) != in" ") failed", "node shouldn't have been seen yet" ); ::breakpoint(); } } while (0); |
| 1190 | } |
| 1191 | #endif |
| 1192 | stack.push(in, 0); |
| 1193 | } |
| 1194 | } else { |
| 1195 | assert(phase->is_dominator(in, call->in(0)), "no dependency on the call")do { if (!(phase->is_dominator(in, call->in(0)))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1195, "assert(" "phase->is_dominator(in, call->in(0))" ") failed", "no dependency on the call"); ::breakpoint(); } } while (0); |
| 1196 | } |
| 1197 | } |
| 1198 | } else { |
| 1199 | phase->set_ctrl(n, call->in(0)); |
| 1200 | stack.pop(); |
| 1201 | } |
| 1202 | } while(stack.size() > 0); |
| 1203 | continue; |
| 1204 | } |
| 1205 | CallProjections projs; |
| 1206 | call->extract_projections(&projs, false, false); |
| 1207 | |
| 1208 | #ifdef ASSERT1 |
| 1209 | VectorSet cloned; |
| 1210 | #endif |
| 1211 | Node* lrb_clone = lrb->clone(); |
| 1212 | phase->register_new_node(lrb_clone, projs.catchall_catchproj); |
| 1213 | phase->set_ctrl(lrb, projs.fallthrough_catchproj); |
| 1214 | |
| 1215 | stack.push(lrb, 0); |
| 1216 | clones.push(lrb_clone); |
| 1217 | |
| 1218 | do { |
| 1219 | assert(stack.size() == clones.size(), "")do { if (!(stack.size() == clones.size())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1219, "assert(" "stack.size() == clones.size()" ") failed", ""); ::breakpoint(); } } while (0); |
| 1220 | Node* n = stack.node(); |
| 1221 | #ifdef ASSERT1 |
| 1222 | if (n->is_Load()) { |
| 1223 | Node* mem = n->in(MemNode::Memory); |
| 1224 | for (DUIterator_Fast jmax, j = mem->fast_outs(jmax); j < jmax; j++) { |
| 1225 | Node* u = mem->fast_out(j); |
| 1226 | assert(!u->is_Store() || !u->is_LoadStore() || phase->get_ctrl(u) != ctrl, "anti dependent store?")do { if (!(!u->is_Store() || !u->is_LoadStore() || phase ->get_ctrl(u) != ctrl)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1226, "assert(" "!u->is_Store() || !u->is_LoadStore() || phase->get_ctrl(u) != ctrl" ") failed", "anti dependent store?"); ::breakpoint(); } } while (0); |
| 1227 | } |
| 1228 | } |
| 1229 | #endif |
| 1230 | uint idx = stack.index(); |
| 1231 | Node* n_clone = clones.at(clones.size()-1); |
| 1232 | if (idx < n->outcnt()) { |
| 1233 | Node* u = n->raw_out(idx); |
| 1234 | Node* c = phase->ctrl_or_self(u); |
| 1235 | if (phase->is_dominator(call, c) && phase->is_dominator(c, projs.fallthrough_proj)) { |
| 1236 | stack.set_index(idx+1); |
| 1237 | assert(!u->is_CFG(), "")do { if (!(!u->is_CFG())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1237, "assert(" "!u->is_CFG()" ") failed", ""); ::breakpoint (); } } while (0); |
| 1238 | stack.push(u, 0); |
| 1239 | assert(!cloned.test_set(u->_idx), "only one clone")do { if (!(!cloned.test_set(u->_idx))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1239, "assert(" "!cloned.test_set(u->_idx)" ") failed", "only one clone" ); ::breakpoint(); } } while (0); |
| 1240 | Node* u_clone = u->clone(); |
| 1241 | int nb = u_clone->replace_edge(n, n_clone, &phase->igvn()); |
| 1242 | assert(nb > 0, "should have replaced some uses")do { if (!(nb > 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1242, "assert(" "nb > 0" ") failed", "should have replaced some uses" ); ::breakpoint(); } } while (0); |
| 1243 | phase->register_new_node(u_clone, projs.catchall_catchproj); |
| 1244 | clones.push(u_clone); |
| 1245 | phase->set_ctrl(u, projs.fallthrough_catchproj); |
| 1246 | } else { |
| 1247 | bool replaced = false; |
| 1248 | if (u->is_Phi()) { |
| 1249 | for (uint k = 1; k < u->req(); k++) { |
| 1250 | if (u->in(k) == n) { |
| 1251 | if (phase->is_dominator(projs.catchall_catchproj, u->in(0)->in(k))) { |
| 1252 | phase->igvn().replace_input_of(u, k, n_clone); |
| 1253 | replaced = true; |
| 1254 | } else if (!phase->is_dominator(projs.fallthrough_catchproj, u->in(0)->in(k))) { |
| 1255 | phase->igvn().replace_input_of(u, k, create_phis_on_call_return(ctrl, u->in(0)->in(k), n, n_clone, projs, phase)); |
| 1256 | replaced = true; |
| 1257 | } |
| 1258 | } |
| 1259 | } |
| 1260 | } else { |
| 1261 | if (phase->is_dominator(projs.catchall_catchproj, c)) { |
| 1262 | phase->igvn().rehash_node_delayed(u); |
| 1263 | int nb = u->replace_edge(n, n_clone, &phase->igvn()); |
| 1264 | assert(nb > 0, "should have replaced some uses")do { if (!(nb > 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1264, "assert(" "nb > 0" ") failed", "should have replaced some uses" ); ::breakpoint(); } } while (0); |
| 1265 | replaced = true; |
| 1266 | } else if (!phase->is_dominator(projs.fallthrough_catchproj, c)) { |
| 1267 | if (u->is_If()) { |
| 1268 | // Can't break If/Bool/Cmp chain |
| 1269 | assert(n->is_Bool(), "unexpected If shape")do { if (!(n->is_Bool())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1269, "assert(" "n->is_Bool()" ") failed", "unexpected If shape" ); ::breakpoint(); } } while (0); |
| 1270 | assert(stack.node_at(stack.size()-2)->is_Cmp(), "unexpected If shape")do { if (!(stack.node_at(stack.size()-2)->is_Cmp())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1270, "assert(" "stack.node_at(stack.size()-2)->is_Cmp()" ") failed", "unexpected If shape"); ::breakpoint(); } } while (0); |
| 1271 | assert(n_clone->is_Bool(), "unexpected clone")do { if (!(n_clone->is_Bool())) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1271, "assert(" "n_clone->is_Bool()" ") failed", "unexpected clone" ); ::breakpoint(); } } while (0); |
| 1272 | assert(clones.at(clones.size()-2)->is_Cmp(), "unexpected clone")do { if (!(clones.at(clones.size()-2)->is_Cmp())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1272, "assert(" "clones.at(clones.size()-2)->is_Cmp()" ") failed" , "unexpected clone"); ::breakpoint(); } } while (0); |
| 1273 | Node* bol_clone = n->clone(); |
| 1274 | Node* cmp_clone = stack.node_at(stack.size()-2)->clone(); |
| 1275 | bol_clone->set_req(1, cmp_clone); |
| 1276 | |
| 1277 | Node* nn = stack.node_at(stack.size()-3); |
| 1278 | Node* nn_clone = clones.at(clones.size()-3); |
| 1279 | assert(nn->Opcode() == nn_clone->Opcode(), "mismatch")do { if (!(nn->Opcode() == nn_clone->Opcode())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1279, "assert(" "nn->Opcode() == nn_clone->Opcode()" ") failed" , "mismatch"); ::breakpoint(); } } while (0); |
| 1280 | |
| 1281 | int nb = cmp_clone->replace_edge(nn, create_phis_on_call_return(ctrl, c, nn, nn_clone, projs, phase), |
| 1282 | &phase->igvn()); |
| 1283 | assert(nb > 0, "should have replaced some uses")do { if (!(nb > 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1283, "assert(" "nb > 0" ") failed", "should have replaced some uses" ); ::breakpoint(); } } while (0); |
| 1284 | |
| 1285 | phase->register_new_node(bol_clone, u->in(0)); |
| 1286 | phase->register_new_node(cmp_clone, u->in(0)); |
| 1287 | |
| 1288 | phase->igvn().replace_input_of(u, 1, bol_clone); |
| 1289 | |
| 1290 | } else { |
| 1291 | phase->igvn().rehash_node_delayed(u); |
| 1292 | int nb = u->replace_edge(n, create_phis_on_call_return(ctrl, c, n, n_clone, projs, phase), &phase->igvn()); |
| 1293 | assert(nb > 0, "should have replaced some uses")do { if (!(nb > 0)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1293, "assert(" "nb > 0" ") failed", "should have replaced some uses" ); ::breakpoint(); } } while (0); |
| 1294 | } |
| 1295 | replaced = true; |
| 1296 | } |
| 1297 | } |
| 1298 | if (!replaced) { |
| 1299 | stack.set_index(idx+1); |
| 1300 | } |
| 1301 | } |
| 1302 | } else { |
| 1303 | stack.pop(); |
| 1304 | clones.pop(); |
| 1305 | } |
| 1306 | } while (stack.size() > 0); |
| 1307 | assert(stack.size() == 0 && clones.size() == 0, "")do { if (!(stack.size() == 0 && clones.size() == 0)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1307, "assert(" "stack.size() == 0 && clones.size() == 0" ") failed", ""); ::breakpoint(); } } while (0); |
| 1308 | } |
| 1309 | } |
| 1310 | |
| 1311 | for (int i = 0; i < state->load_reference_barriers_count(); i++) { |
| 1312 | ShenandoahLoadReferenceBarrierNode* lrb = state->load_reference_barrier(i); |
| 1313 | Node* ctrl = phase->get_ctrl(lrb); |
| 1314 | IdealLoopTree* loop = phase->get_loop(ctrl); |
| 1315 | Node* head = loop->head(); |
| 1316 | if (head->is_OuterStripMinedLoop()) { |
| 1317 | // Expanding a barrier here will break loop strip mining |
| 1318 | // verification. Transform the loop so the loop nest doesn't |
| 1319 | // appear as strip mined. |
| 1320 | OuterStripMinedLoopNode* outer = head->as_OuterStripMinedLoop(); |
| 1321 | hide_strip_mined_loop(outer, outer->unique_ctrl_out()->as_CountedLoop(), phase); |
| 1322 | } |
| 1323 | } |
| 1324 | |
| 1325 | // Expand load-reference-barriers |
| 1326 | MemoryGraphFixer fixer(Compile::AliasIdxRaw, true, phase); |
| 1327 | Unique_Node_List uses_to_ignore; |
| 1328 | for (int i = state->load_reference_barriers_count() - 1; i >= 0; i--) { |
| 1329 | ShenandoahLoadReferenceBarrierNode* lrb = state->load_reference_barrier(i); |
| 1330 | uint last = phase->C->unique(); |
| 1331 | Node* ctrl = phase->get_ctrl(lrb); |
| 1332 | Node* val = lrb->in(ShenandoahLoadReferenceBarrierNode::ValueIn); |
| 1333 | |
| 1334 | Node* orig_ctrl = ctrl; |
| 1335 | |
| 1336 | Node* raw_mem = fixer.find_mem(ctrl, lrb); |
| 1337 | |
| 1338 | IdealLoopTree *loop = phase->get_loop(ctrl); |
| 1339 | |
| 1340 | Node* heap_stable_ctrl = NULL__null; |
| 1341 | Node* null_ctrl = NULL__null; |
| 1342 | |
| 1343 | assert(val->bottom_type()->make_oopptr(), "need oop")do { if (!(val->bottom_type()->make_oopptr())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1343, "assert(" "val->bottom_type()->make_oopptr()" ") failed" , "need oop"); ::breakpoint(); } } while (0); |
| 1344 | assert(val->bottom_type()->make_oopptr()->const_oop() == NULL, "expect non-constant")do { if (!(val->bottom_type()->make_oopptr()->const_oop () == __null)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1344, "assert(" "val->bottom_type()->make_oopptr()->const_oop() == __null" ") failed", "expect non-constant"); ::breakpoint(); } } while (0); |
| 1345 | |
| 1346 | enum { _heap_stable = 1, _evac_path, _not_cset, PATH_LIMIT }; |
| 1347 | Node* region = new RegionNode(PATH_LIMIT); |
| 1348 | Node* val_phi = new PhiNode(region, val->bottom_type()->is_oopptr()); |
| 1349 | |
| 1350 | // Stable path. |
| 1351 | int flags = ShenandoahHeap::HAS_FORWARDED; |
| 1352 | if (!ShenandoahBarrierSet::is_strong_access(lrb->decorators())) { |
| 1353 | flags |= ShenandoahHeap::WEAK_ROOTS; |
| 1354 | } |
| 1355 | test_gc_state(ctrl, raw_mem, heap_stable_ctrl, phase, flags); |
| 1356 | IfNode* heap_stable_iff = heap_stable_ctrl->in(0)->as_If(); |
| 1357 | |
| 1358 | // Heap stable case |
| 1359 | region->init_req(_heap_stable, heap_stable_ctrl); |
| 1360 | val_phi->init_req(_heap_stable, val); |
| 1361 | |
| 1362 | // Test for in-cset, unless it's a native-LRB. Native LRBs need to return NULL |
| 1363 | // even for non-cset objects to prevent ressurrection of such objects. |
| 1364 | // Wires !in_cset(obj) to slot 2 of region and phis |
| 1365 | Node* not_cset_ctrl = NULL__null; |
| 1366 | if (ShenandoahBarrierSet::is_strong_access(lrb->decorators())) { |
| 1367 | test_in_cset(ctrl, not_cset_ctrl, val, raw_mem, phase); |
| 1368 | } |
| 1369 | if (not_cset_ctrl != NULL__null) { |
| 1370 | region->init_req(_not_cset, not_cset_ctrl); |
| 1371 | val_phi->init_req(_not_cset, val); |
| 1372 | } else { |
| 1373 | region->del_req(_not_cset); |
| 1374 | val_phi->del_req(_not_cset); |
| 1375 | } |
| 1376 | |
| 1377 | // Resolve object when orig-value is in cset. |
| 1378 | // Make the unconditional resolve for fwdptr. |
| 1379 | |
| 1380 | // Call lrb-stub and wire up that path in slots 4 |
| 1381 | Node* result_mem = NULL__null; |
| 1382 | |
| 1383 | Node* addr; |
| 1384 | if (ShenandoahSelfFixing) { |
| 1385 | VectorSet visited; |
| 1386 | addr = get_load_addr(phase, visited, lrb); |
| 1387 | } else { |
| 1388 | addr = phase->igvn().zerocon(T_OBJECT); |
| 1389 | } |
| 1390 | if (addr->Opcode() == Op_AddP) { |
| 1391 | Node* orig_base = addr->in(AddPNode::Base); |
| 1392 | Node* base = new CheckCastPPNode(ctrl, orig_base, orig_base->bottom_type(), ConstraintCastNode::StrongDependency); |
| 1393 | phase->register_new_node(base, ctrl); |
| 1394 | if (addr->in(AddPNode::Base) == addr->in((AddPNode::Address))) { |
| 1395 | // Field access |
| 1396 | addr = addr->clone(); |
| 1397 | addr->set_req(AddPNode::Base, base); |
| 1398 | addr->set_req(AddPNode::Address, base); |
| 1399 | phase->register_new_node(addr, ctrl); |
| 1400 | } else { |
| 1401 | Node* addr2 = addr->in(AddPNode::Address); |
| 1402 | if (addr2->Opcode() == Op_AddP && addr2->in(AddPNode::Base) == addr2->in(AddPNode::Address) && |
| 1403 | addr2->in(AddPNode::Base) == orig_base) { |
| 1404 | addr2 = addr2->clone(); |
| 1405 | addr2->set_req(AddPNode::Base, base); |
| 1406 | addr2->set_req(AddPNode::Address, base); |
| 1407 | phase->register_new_node(addr2, ctrl); |
| 1408 | addr = addr->clone(); |
| 1409 | addr->set_req(AddPNode::Base, base); |
| 1410 | addr->set_req(AddPNode::Address, addr2); |
| 1411 | phase->register_new_node(addr, ctrl); |
| 1412 | } |
| 1413 | } |
| 1414 | } |
| 1415 | call_lrb_stub(ctrl, val, addr, lrb->decorators(), phase); |
| 1416 | region->init_req(_evac_path, ctrl); |
| 1417 | val_phi->init_req(_evac_path, val); |
| 1418 | |
| 1419 | phase->register_control(region, loop, heap_stable_iff); |
| 1420 | Node* out_val = val_phi; |
| 1421 | phase->register_new_node(val_phi, region); |
| 1422 | |
| 1423 | fix_ctrl(lrb, region, fixer, uses, uses_to_ignore, last, phase); |
| 1424 | |
| 1425 | ctrl = orig_ctrl; |
| 1426 | |
| 1427 | phase->igvn().replace_node(lrb, out_val); |
| 1428 | |
| 1429 | follow_barrier_uses(out_val, ctrl, uses, phase); |
| 1430 | |
| 1431 | for(uint next = 0; next < uses.size(); next++ ) { |
| 1432 | Node *n = uses.at(next); |
| 1433 | assert(phase->get_ctrl(n) == ctrl, "bad control")do { if (!(phase->get_ctrl(n) == ctrl)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1433, "assert(" "phase->get_ctrl(n) == ctrl" ") failed", "bad control"); ::breakpoint(); } } while (0); |
| 1434 | assert(n != raw_mem, "should leave input raw mem above the barrier")do { if (!(n != raw_mem)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1434, "assert(" "n != raw_mem" ") failed", "should leave input raw mem above the barrier" ); ::breakpoint(); } } while (0); |
| 1435 | phase->set_ctrl(n, region); |
| 1436 | follow_barrier_uses(n, ctrl, uses, phase); |
| 1437 | } |
| 1438 | } |
| 1439 | // Done expanding load-reference-barriers. |
| 1440 | assert(ShenandoahBarrierSetC2::bsc2()->state()->load_reference_barriers_count() == 0, "all load reference barrier nodes should have been replaced")do { if (!(ShenandoahBarrierSetC2::bsc2()->state()->load_reference_barriers_count () == 0)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1440, "assert(" "ShenandoahBarrierSetC2::bsc2()->state()->load_reference_barriers_count() == 0" ") failed", "all load reference barrier nodes should have been replaced" ); ::breakpoint(); } } while (0); |
| 1441 | |
| 1442 | for (int i = state->iu_barriers_count() - 1; i >= 0; i--) { |
| 1443 | Node* barrier = state->iu_barrier(i); |
| 1444 | Node* pre_val = barrier->in(1); |
| 1445 | |
| 1446 | if (phase->igvn().type(pre_val)->higher_equal(TypePtr::NULL_PTR)) { |
| 1447 | ShouldNotReachHere()do { (*g_assert_poison) = 'X';; report_should_not_reach_here( "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1447); ::breakpoint(); } while (0); |
| 1448 | continue; |
| 1449 | } |
| 1450 | |
| 1451 | Node* ctrl = phase->get_ctrl(barrier); |
| 1452 | |
| 1453 | if (ctrl->is_Proj() && ctrl->in(0)->is_CallJava()) { |
| 1454 | assert(is_dominator(phase->get_ctrl(pre_val), ctrl->in(0)->in(0), pre_val, ctrl->in(0), phase), "can't move")do { if (!(is_dominator(phase->get_ctrl(pre_val), ctrl-> in(0)->in(0), pre_val, ctrl->in(0), phase))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1454, "assert(" "is_dominator(phase->get_ctrl(pre_val), ctrl->in(0)->in(0), pre_val, ctrl->in(0), phase)" ") failed", "can't move"); ::breakpoint(); } } while (0); |
| 1455 | ctrl = ctrl->in(0)->in(0); |
| 1456 | phase->set_ctrl(barrier, ctrl); |
| 1457 | } else if (ctrl->is_CallRuntime()) { |
| 1458 | assert(is_dominator(phase->get_ctrl(pre_val), ctrl->in(0), pre_val, ctrl, phase), "can't move")do { if (!(is_dominator(phase->get_ctrl(pre_val), ctrl-> in(0), pre_val, ctrl, phase))) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1458, "assert(" "is_dominator(phase->get_ctrl(pre_val), ctrl->in(0), pre_val, ctrl, phase)" ") failed", "can't move"); ::breakpoint(); } } while (0); |
| 1459 | ctrl = ctrl->in(0); |
| 1460 | phase->set_ctrl(barrier, ctrl); |
| 1461 | } |
| 1462 | |
| 1463 | Node* init_ctrl = ctrl; |
| 1464 | IdealLoopTree* loop = phase->get_loop(ctrl); |
| 1465 | Node* raw_mem = fixer.find_mem(ctrl, barrier); |
| 1466 | Node* init_raw_mem = raw_mem; |
| 1467 | Node* raw_mem_for_ctrl = fixer.find_mem(ctrl, NULL__null); |
| 1468 | Node* heap_stable_ctrl = NULL__null; |
| 1469 | Node* null_ctrl = NULL__null; |
| 1470 | uint last = phase->C->unique(); |
| 1471 | |
| 1472 | enum { _heap_stable = 1, _heap_unstable, PATH_LIMIT }; |
| 1473 | Node* region = new RegionNode(PATH_LIMIT); |
| 1474 | Node* phi = PhiNode::make(region, raw_mem, Type::MEMORY, TypeRawPtr::BOTTOM); |
| 1475 | |
| 1476 | enum { _fast_path = 1, _slow_path, _null_path, PATH_LIMIT2 }; |
| 1477 | Node* region2 = new RegionNode(PATH_LIMIT2); |
| 1478 | Node* phi2 = PhiNode::make(region2, raw_mem, Type::MEMORY, TypeRawPtr::BOTTOM); |
| 1479 | |
| 1480 | // Stable path. |
| 1481 | test_gc_state(ctrl, raw_mem, heap_stable_ctrl, phase, ShenandoahHeap::MARKING); |
| 1482 | region->init_req(_heap_stable, heap_stable_ctrl); |
| 1483 | phi->init_req(_heap_stable, raw_mem); |
| 1484 | |
| 1485 | // Null path |
| 1486 | Node* reg2_ctrl = NULL__null; |
| 1487 | test_null(ctrl, pre_val, null_ctrl, phase); |
| 1488 | if (null_ctrl != NULL__null) { |
| 1489 | reg2_ctrl = null_ctrl->in(0); |
| 1490 | region2->init_req(_null_path, null_ctrl); |
| 1491 | phi2->init_req(_null_path, raw_mem); |
| 1492 | } else { |
| 1493 | region2->del_req(_null_path); |
| 1494 | phi2->del_req(_null_path); |
| 1495 | } |
| 1496 | |
| 1497 | const int index_offset = in_bytes(ShenandoahThreadLocalData::satb_mark_queue_index_offset()); |
| 1498 | const int buffer_offset = in_bytes(ShenandoahThreadLocalData::satb_mark_queue_buffer_offset()); |
| 1499 | Node* thread = new ThreadLocalNode(); |
| 1500 | phase->register_new_node(thread, ctrl); |
| 1501 | Node* buffer_adr = new AddPNode(phase->C->top(), thread, phase->igvn().MakeConXlongcon(buffer_offset)); |
| 1502 | phase->register_new_node(buffer_adr, ctrl); |
| 1503 | Node* index_adr = new AddPNode(phase->C->top(), thread, phase->igvn().MakeConXlongcon(index_offset)); |
| 1504 | phase->register_new_node(index_adr, ctrl); |
| 1505 | |
| 1506 | BasicType index_bt = TypeX_XTypeLong::LONG->basic_type(); |
| 1507 | assert(sizeof(size_t) == type2aelembytes(index_bt), "Loading Shenandoah SATBMarkQueue::_index with wrong size.")do { if (!(sizeof(size_t) == type2aelembytes(index_bt))) { (* g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1507, "assert(" "sizeof(size_t) == type2aelembytes(index_bt)" ") failed", "Loading Shenandoah SATBMarkQueue::_index with wrong size." ); ::breakpoint(); } } while (0); |
| 1508 | const TypePtr* adr_type = TypeRawPtr::BOTTOM; |
| 1509 | Node* index = new LoadXNodeLoadLNode(ctrl, raw_mem, index_adr, adr_type, TypeX_XTypeLong::LONG, MemNode::unordered); |
| 1510 | phase->register_new_node(index, ctrl); |
| 1511 | Node* index_cmp = new CmpXNodeCmpLNode(index, phase->igvn().MakeConXlongcon(0)); |
| 1512 | phase->register_new_node(index_cmp, ctrl); |
| 1513 | Node* index_test = new BoolNode(index_cmp, BoolTest::ne); |
| 1514 | phase->register_new_node(index_test, ctrl); |
| 1515 | IfNode* queue_full_iff = new IfNode(ctrl, index_test, PROB_LIKELY(0.999)((float) (0.999)), COUNT_UNKNOWN(-1.0f)); |
| 1516 | if (reg2_ctrl == NULL__null) reg2_ctrl = queue_full_iff; |
| 1517 | phase->register_control(queue_full_iff, loop, ctrl); |
| 1518 | Node* not_full = new IfTrueNode(queue_full_iff); |
| 1519 | phase->register_control(not_full, loop, queue_full_iff); |
| 1520 | Node* full = new IfFalseNode(queue_full_iff); |
| 1521 | phase->register_control(full, loop, queue_full_iff); |
| 1522 | |
| 1523 | ctrl = not_full; |
| 1524 | |
| 1525 | Node* next_index = new SubXNodeSubLNode(index, phase->igvn().MakeConXlongcon(sizeof(intptr_t))); |
| 1526 | phase->register_new_node(next_index, ctrl); |
| 1527 | |
| 1528 | Node* buffer = new LoadPNode(ctrl, raw_mem, buffer_adr, adr_type, TypeRawPtr::NOTNULL, MemNode::unordered); |
| 1529 | phase->register_new_node(buffer, ctrl); |
| 1530 | Node *log_addr = new AddPNode(phase->C->top(), buffer, next_index); |
| 1531 | phase->register_new_node(log_addr, ctrl); |
| 1532 | Node* log_store = new StorePNode(ctrl, raw_mem, log_addr, adr_type, pre_val, MemNode::unordered); |
| 1533 | phase->register_new_node(log_store, ctrl); |
| 1534 | // update the index |
| 1535 | Node* index_update = new StoreXNodeStoreLNode(ctrl, log_store, index_adr, adr_type, next_index, MemNode::unordered); |
| 1536 | phase->register_new_node(index_update, ctrl); |
| 1537 | |
| 1538 | // Fast-path case |
| 1539 | region2->init_req(_fast_path, ctrl); |
| 1540 | phi2->init_req(_fast_path, index_update); |
| 1541 | |
| 1542 | ctrl = full; |
| 1543 | |
| 1544 | Node* base = find_bottom_mem(ctrl, phase); |
| 1545 | |
| 1546 | MergeMemNode* mm = MergeMemNode::make(base); |
| 1547 | mm->set_memory_at(Compile::AliasIdxRaw, raw_mem); |
| 1548 | phase->register_new_node(mm, ctrl); |
| 1549 | |
| 1550 | Node* call = new CallLeafNode(ShenandoahBarrierSetC2::write_ref_field_pre_entry_Type(), CAST_FROM_FN_PTR(address, ShenandoahRuntime::write_ref_field_pre_entry)((address)((address_word)(ShenandoahRuntime::write_ref_field_pre_entry ))), "shenandoah_wb_pre", TypeRawPtr::BOTTOM); |
| 1551 | call->init_req(TypeFunc::Control, ctrl); |
| 1552 | call->init_req(TypeFunc::I_O, phase->C->top()); |
| 1553 | call->init_req(TypeFunc::Memory, mm); |
| 1554 | call->init_req(TypeFunc::FramePtr, phase->C->top()); |
| 1555 | call->init_req(TypeFunc::ReturnAdr, phase->C->top()); |
| 1556 | call->init_req(TypeFunc::Parms, pre_val); |
| 1557 | call->init_req(TypeFunc::Parms+1, thread); |
| 1558 | phase->register_control(call, loop, ctrl); |
| 1559 | |
| 1560 | Node* ctrl_proj = new ProjNode(call, TypeFunc::Control); |
| 1561 | phase->register_control(ctrl_proj, loop, call); |
| 1562 | Node* mem_proj = new ProjNode(call, TypeFunc::Memory); |
| 1563 | phase->register_new_node(mem_proj, call); |
| 1564 | |
| 1565 | // Slow-path case |
| 1566 | region2->init_req(_slow_path, ctrl_proj); |
| 1567 | phi2->init_req(_slow_path, mem_proj); |
| 1568 | |
| 1569 | phase->register_control(region2, loop, reg2_ctrl); |
| 1570 | phase->register_new_node(phi2, region2); |
| 1571 | |
| 1572 | region->init_req(_heap_unstable, region2); |
| 1573 | phi->init_req(_heap_unstable, phi2); |
| 1574 | |
| 1575 | phase->register_control(region, loop, heap_stable_ctrl->in(0)); |
| 1576 | phase->register_new_node(phi, region); |
| 1577 | |
| 1578 | fix_ctrl(barrier, region, fixer, uses, uses_to_ignore, last, phase); |
| 1579 | for(uint next = 0; next < uses.size(); next++ ) { |
| 1580 | Node *n = uses.at(next); |
| 1581 | assert(phase->get_ctrl(n) == init_ctrl, "bad control")do { if (!(phase->get_ctrl(n) == init_ctrl)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1581, "assert(" "phase->get_ctrl(n) == init_ctrl" ") failed" , "bad control"); ::breakpoint(); } } while (0); |
| 1582 | assert(n != init_raw_mem, "should leave input raw mem above the barrier")do { if (!(n != init_raw_mem)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1582, "assert(" "n != init_raw_mem" ") failed", "should leave input raw mem above the barrier" ); ::breakpoint(); } } while (0); |
| 1583 | phase->set_ctrl(n, region); |
| 1584 | follow_barrier_uses(n, init_ctrl, uses, phase); |
| 1585 | } |
| 1586 | fixer.fix_mem(init_ctrl, region, init_raw_mem, raw_mem_for_ctrl, phi, uses); |
| 1587 | |
| 1588 | phase->igvn().replace_node(barrier, pre_val); |
| 1589 | } |
| 1590 | assert(state->iu_barriers_count() == 0, "all enqueue barrier nodes should have been replaced")do { if (!(state->iu_barriers_count() == 0)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1590, "assert(" "state->iu_barriers_count() == 0" ") failed" , "all enqueue barrier nodes should have been replaced"); ::breakpoint (); } } while (0); |
| 1591 | |
| 1592 | } |
| 1593 | |
| 1594 | Node* ShenandoahBarrierC2Support::get_load_addr(PhaseIdealLoop* phase, VectorSet& visited, Node* in) { |
| 1595 | if (visited.test_set(in->_idx)) { |
| 1596 | return NULL__null; |
| 1597 | } |
| 1598 | switch (in->Opcode()) { |
| 1599 | case Op_Proj: |
| 1600 | return get_load_addr(phase, visited, in->in(0)); |
| 1601 | case Op_CastPP: |
| 1602 | case Op_CheckCastPP: |
| 1603 | case Op_DecodeN: |
| 1604 | case Op_EncodeP: |
| 1605 | return get_load_addr(phase, visited, in->in(1)); |
| 1606 | case Op_LoadN: |
| 1607 | case Op_LoadP: |
| 1608 | return in->in(MemNode::Address); |
| 1609 | case Op_CompareAndExchangeN: |
| 1610 | case Op_CompareAndExchangeP: |
| 1611 | case Op_GetAndSetN: |
| 1612 | case Op_GetAndSetP: |
| 1613 | case Op_ShenandoahCompareAndExchangeP: |
| 1614 | case Op_ShenandoahCompareAndExchangeN: |
| 1615 | // Those instructions would just have stored a different |
| 1616 | // value into the field. No use to attempt to fix it at this point. |
| 1617 | return phase->igvn().zerocon(T_OBJECT); |
| 1618 | case Op_CMoveP: |
| 1619 | case Op_CMoveN: { |
| 1620 | Node* t = get_load_addr(phase, visited, in->in(CMoveNode::IfTrue)); |
| 1621 | Node* f = get_load_addr(phase, visited, in->in(CMoveNode::IfFalse)); |
| 1622 | // Handle unambiguous cases: single address reported on both branches. |
| 1623 | if (t != NULL__null && f == NULL__null) return t; |
| 1624 | if (t == NULL__null && f != NULL__null) return f; |
| 1625 | if (t != NULL__null && t == f) return t; |
| 1626 | // Ambiguity. |
| 1627 | return phase->igvn().zerocon(T_OBJECT); |
| 1628 | } |
| 1629 | case Op_Phi: { |
| 1630 | Node* addr = NULL__null; |
| 1631 | for (uint i = 1; i < in->req(); i++) { |
| 1632 | Node* addr1 = get_load_addr(phase, visited, in->in(i)); |
| 1633 | if (addr == NULL__null) { |
| 1634 | addr = addr1; |
| 1635 | } |
| 1636 | if (addr != addr1) { |
| 1637 | return phase->igvn().zerocon(T_OBJECT); |
| 1638 | } |
| 1639 | } |
| 1640 | return addr; |
| 1641 | } |
| 1642 | case Op_ShenandoahLoadReferenceBarrier: |
| 1643 | return get_load_addr(phase, visited, in->in(ShenandoahLoadReferenceBarrierNode::ValueIn)); |
| 1644 | case Op_ShenandoahIUBarrier: |
| 1645 | return get_load_addr(phase, visited, in->in(1)); |
| 1646 | case Op_CallDynamicJava: |
| 1647 | case Op_CallLeaf: |
| 1648 | case Op_CallStaticJava: |
| 1649 | case Op_ConN: |
| 1650 | case Op_ConP: |
| 1651 | case Op_Parm: |
| 1652 | case Op_CreateEx: |
| 1653 | return phase->igvn().zerocon(T_OBJECT); |
| 1654 | default: |
| 1655 | #ifdef ASSERT1 |
| 1656 | fatal("Unknown node in get_load_addr: %s", NodeClassNames[in->Opcode()])do { (*g_assert_poison) = 'X';; report_fatal(INTERNAL_ERROR, "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1656, "Unknown node in get_load_addr: %s", NodeClassNames[in ->Opcode()]); ::breakpoint(); } while (0); |
| 1657 | #endif |
| 1658 | return phase->igvn().zerocon(T_OBJECT); |
| 1659 | } |
| 1660 | |
| 1661 | } |
| 1662 | |
| 1663 | void ShenandoahBarrierC2Support::move_gc_state_test_out_of_loop(IfNode* iff, PhaseIdealLoop* phase) { |
| 1664 | IdealLoopTree *loop = phase->get_loop(iff); |
| 1665 | Node* loop_head = loop->_head; |
| 1666 | Node* entry_c = loop_head->in(LoopNode::EntryControl); |
| 1667 | |
| 1668 | Node* bol = iff->in(1); |
| 1669 | Node* cmp = bol->in(1); |
| 1670 | Node* andi = cmp->in(1); |
| 1671 | Node* load = andi->in(1); |
| 1672 | |
| 1673 | assert(is_gc_state_load(load), "broken")do { if (!(is_gc_state_load(load))) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1673, "assert(" "is_gc_state_load(load)" ") failed", "broken" ); ::breakpoint(); } } while (0); |
| 1674 | if (!phase->is_dominator(load->in(0), entry_c)) { |
| 1675 | Node* mem_ctrl = NULL__null; |
| 1676 | Node* mem = dom_mem(load->in(MemNode::Memory), loop_head, Compile::AliasIdxRaw, mem_ctrl, phase); |
| 1677 | load = load->clone(); |
| 1678 | load->set_req(MemNode::Memory, mem); |
| 1679 | load->set_req(0, entry_c); |
| 1680 | phase->register_new_node(load, entry_c); |
| 1681 | andi = andi->clone(); |
| 1682 | andi->set_req(1, load); |
| 1683 | phase->register_new_node(andi, entry_c); |
| 1684 | cmp = cmp->clone(); |
| 1685 | cmp->set_req(1, andi); |
| 1686 | phase->register_new_node(cmp, entry_c); |
| 1687 | bol = bol->clone(); |
| 1688 | bol->set_req(1, cmp); |
| 1689 | phase->register_new_node(bol, entry_c); |
| 1690 | |
| 1691 | phase->igvn().replace_input_of(iff, 1, bol); |
| 1692 | } |
| 1693 | } |
| 1694 | |
| 1695 | bool ShenandoahBarrierC2Support::identical_backtoback_ifs(Node* n, PhaseIdealLoop* phase) { |
| 1696 | if (!n->is_If() || n->is_CountedLoopEnd()) { |
| 1697 | return false; |
| 1698 | } |
| 1699 | Node* region = n->in(0); |
| 1700 | |
| 1701 | if (!region->is_Region()) { |
| 1702 | return false; |
| 1703 | } |
| 1704 | Node* dom = phase->idom(region); |
| 1705 | if (!dom->is_If()) { |
| 1706 | return false; |
| 1707 | } |
| 1708 | |
| 1709 | if (!is_heap_stable_test(n) || !is_heap_stable_test(dom)) { |
| 1710 | return false; |
| 1711 | } |
| 1712 | |
| 1713 | IfNode* dom_if = dom->as_If(); |
| 1714 | Node* proj_true = dom_if->proj_out(1); |
| 1715 | Node* proj_false = dom_if->proj_out(0); |
| 1716 | |
| 1717 | for (uint i = 1; i < region->req(); i++) { |
| 1718 | if (phase->is_dominator(proj_true, region->in(i))) { |
| 1719 | continue; |
| 1720 | } |
| 1721 | if (phase->is_dominator(proj_false, region->in(i))) { |
| 1722 | continue; |
| 1723 | } |
| 1724 | return false; |
| 1725 | } |
| 1726 | |
| 1727 | return true; |
| 1728 | } |
| 1729 | |
| 1730 | void ShenandoahBarrierC2Support::merge_back_to_back_tests(Node* n, PhaseIdealLoop* phase) { |
| 1731 | assert(is_heap_stable_test(n), "no other tests")do { if (!(is_heap_stable_test(n))) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1731, "assert(" "is_heap_stable_test(n)" ") failed", "no other tests" ); ::breakpoint(); } } while (0); |
| 1732 | if (identical_backtoback_ifs(n, phase)) { |
| 1733 | Node* n_ctrl = n->in(0); |
| 1734 | if (phase->can_split_if(n_ctrl)) { |
| 1735 | IfNode* dom_if = phase->idom(n_ctrl)->as_If(); |
| 1736 | if (is_heap_stable_test(n)) { |
| 1737 | Node* gc_state_load = n->in(1)->in(1)->in(1)->in(1); |
| 1738 | assert(is_gc_state_load(gc_state_load), "broken")do { if (!(is_gc_state_load(gc_state_load))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1738, "assert(" "is_gc_state_load(gc_state_load)" ") failed" , "broken"); ::breakpoint(); } } while (0); |
| 1739 | Node* dom_gc_state_load = dom_if->in(1)->in(1)->in(1)->in(1); |
| 1740 | assert(is_gc_state_load(dom_gc_state_load), "broken")do { if (!(is_gc_state_load(dom_gc_state_load))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1740, "assert(" "is_gc_state_load(dom_gc_state_load)" ") failed" , "broken"); ::breakpoint(); } } while (0); |
| 1741 | if (gc_state_load != dom_gc_state_load) { |
| 1742 | phase->igvn().replace_node(gc_state_load, dom_gc_state_load); |
| 1743 | } |
| 1744 | } |
| 1745 | PhiNode* bolphi = PhiNode::make_blank(n_ctrl, n->in(1)); |
| 1746 | Node* proj_true = dom_if->proj_out(1); |
| 1747 | Node* proj_false = dom_if->proj_out(0); |
| 1748 | Node* con_true = phase->igvn().makecon(TypeInt::ONE); |
| 1749 | Node* con_false = phase->igvn().makecon(TypeInt::ZERO); |
| 1750 | |
| 1751 | for (uint i = 1; i < n_ctrl->req(); i++) { |
| 1752 | if (phase->is_dominator(proj_true, n_ctrl->in(i))) { |
| 1753 | bolphi->init_req(i, con_true); |
| 1754 | } else { |
| 1755 | assert(phase->is_dominator(proj_false, n_ctrl->in(i)), "bad if")do { if (!(phase->is_dominator(proj_false, n_ctrl->in(i )))) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1755, "assert(" "phase->is_dominator(proj_false, n_ctrl->in(i))" ") failed", "bad if"); ::breakpoint(); } } while (0); |
| 1756 | bolphi->init_req(i, con_false); |
| 1757 | } |
| 1758 | } |
| 1759 | phase->register_new_node(bolphi, n_ctrl); |
| 1760 | phase->igvn().replace_input_of(n, 1, bolphi); |
| 1761 | phase->do_split_if(n); |
| 1762 | } |
| 1763 | } |
| 1764 | } |
| 1765 | |
| 1766 | IfNode* ShenandoahBarrierC2Support::find_unswitching_candidate(const IdealLoopTree* loop, PhaseIdealLoop* phase) { |
| 1767 | // Find first invariant test that doesn't exit the loop |
| 1768 | LoopNode *head = loop->_head->as_Loop(); |
| 1769 | IfNode* unswitch_iff = NULL__null; |
| 1770 | Node* n = head->in(LoopNode::LoopBackControl); |
| 1771 | int loop_has_sfpts = -1; |
| 1772 | while (n != head) { |
| 1773 | Node* n_dom = phase->idom(n); |
| 1774 | if (n->is_Region()) { |
| 1775 | if (n_dom->is_If()) { |
| 1776 | IfNode* iff = n_dom->as_If(); |
| 1777 | if (iff->in(1)->is_Bool()) { |
| 1778 | BoolNode* bol = iff->in(1)->as_Bool(); |
| 1779 | if (bol->in(1)->is_Cmp()) { |
| 1780 | // If condition is invariant and not a loop exit, |
| 1781 | // then found reason to unswitch. |
| 1782 | if (is_heap_stable_test(iff) && |
| 1783 | (loop_has_sfpts == -1 || loop_has_sfpts == 0)) { |
| 1784 | assert(!loop->is_loop_exit(iff), "both branches should be in the loop")do { if (!(!loop->is_loop_exit(iff))) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1784, "assert(" "!loop->is_loop_exit(iff)" ") failed", "both branches should be in the loop" ); ::breakpoint(); } } while (0); |
| 1785 | if (loop_has_sfpts == -1) { |
| 1786 | for(uint i = 0; i < loop->_body.size(); i++) { |
| 1787 | Node *m = loop->_body[i]; |
| 1788 | if (m->is_SafePoint() && !m->is_CallLeaf()) { |
| 1789 | loop_has_sfpts = 1; |
| 1790 | break; |
| 1791 | } |
| 1792 | } |
| 1793 | if (loop_has_sfpts == -1) { |
| 1794 | loop_has_sfpts = 0; |
| 1795 | } |
| 1796 | } |
| 1797 | if (!loop_has_sfpts) { |
| 1798 | unswitch_iff = iff; |
| 1799 | } |
| 1800 | } |
| 1801 | } |
| 1802 | } |
| 1803 | } |
| 1804 | } |
| 1805 | n = n_dom; |
| 1806 | } |
| 1807 | return unswitch_iff; |
| 1808 | } |
| 1809 | |
| 1810 | |
| 1811 | void ShenandoahBarrierC2Support::optimize_after_expansion(VectorSet &visited, Node_Stack &stack, Node_List &old_new, PhaseIdealLoop* phase) { |
| 1812 | Node_List heap_stable_tests; |
| 1813 | stack.push(phase->C->start(), 0); |
| 1814 | do { |
| 1815 | Node* n = stack.node(); |
| 1816 | uint i = stack.index(); |
| 1817 | |
| 1818 | if (i < n->outcnt()) { |
| 1819 | Node* u = n->raw_out(i); |
| 1820 | stack.set_index(i+1); |
| 1821 | if (!visited.test_set(u->_idx)) { |
| 1822 | stack.push(u, 0); |
| 1823 | } |
| 1824 | } else { |
| 1825 | stack.pop(); |
| 1826 | if (n->is_If() && is_heap_stable_test(n)) { |
| 1827 | heap_stable_tests.push(n); |
| 1828 | } |
| 1829 | } |
| 1830 | } while (stack.size() > 0); |
| 1831 | |
| 1832 | for (uint i = 0; i < heap_stable_tests.size(); i++) { |
| 1833 | Node* n = heap_stable_tests.at(i); |
| 1834 | assert(is_heap_stable_test(n), "only evacuation test")do { if (!(is_heap_stable_test(n))) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1834, "assert(" "is_heap_stable_test(n)" ") failed", "only evacuation test" ); ::breakpoint(); } } while (0); |
| 1835 | merge_back_to_back_tests(n, phase); |
| 1836 | } |
| 1837 | |
| 1838 | if (!phase->C->major_progress()) { |
| 1839 | VectorSet seen; |
| 1840 | for (uint i = 0; i < heap_stable_tests.size(); i++) { |
| 1841 | Node* n = heap_stable_tests.at(i); |
| 1842 | IdealLoopTree* loop = phase->get_loop(n); |
| 1843 | if (loop != phase->ltree_root() && |
| 1844 | loop->_child == NULL__null && |
| 1845 | !loop->_irreducible) { |
| 1846 | Node* head = loop->_head; |
| 1847 | if (head->is_Loop() && |
| 1848 | (!head->is_CountedLoop() || head->as_CountedLoop()->is_main_loop() || head->as_CountedLoop()->is_normal_loop()) && |
| 1849 | !seen.test_set(head->_idx)) { |
| 1850 | IfNode* iff = find_unswitching_candidate(loop, phase); |
| 1851 | if (iff != NULL__null) { |
| 1852 | Node* bol = iff->in(1); |
| 1853 | if (head->as_Loop()->is_strip_mined()) { |
| 1854 | head->as_Loop()->verify_strip_mined(0); |
| 1855 | } |
| 1856 | move_gc_state_test_out_of_loop(iff, phase); |
| 1857 | |
| 1858 | AutoNodeBudget node_budget(phase); |
| 1859 | |
| 1860 | if (loop->policy_unswitching(phase)) { |
| 1861 | if (head->as_Loop()->is_strip_mined()) { |
| 1862 | OuterStripMinedLoopNode* outer = head->as_CountedLoop()->outer_loop(); |
| 1863 | hide_strip_mined_loop(outer, head->as_CountedLoop(), phase); |
| 1864 | } |
| 1865 | phase->do_unswitching(loop, old_new); |
| 1866 | } else { |
| 1867 | // Not proceeding with unswitching. Move load back in |
| 1868 | // the loop. |
| 1869 | phase->igvn().replace_input_of(iff, 1, bol); |
| 1870 | } |
| 1871 | } |
| 1872 | } |
| 1873 | } |
| 1874 | } |
| 1875 | } |
| 1876 | } |
| 1877 | |
| 1878 | ShenandoahIUBarrierNode::ShenandoahIUBarrierNode(Node* val) : Node(NULL__null, val) { |
| 1879 | ShenandoahBarrierSetC2::bsc2()->state()->add_iu_barrier(this); |
| 1880 | } |
| 1881 | |
| 1882 | const Type* ShenandoahIUBarrierNode::bottom_type() const { |
| 1883 | if (in(1) == NULL__null || in(1)->is_top()) { |
| 1884 | return Type::TOP; |
| 1885 | } |
| 1886 | const Type* t = in(1)->bottom_type(); |
| 1887 | if (t == TypePtr::NULL_PTR) { |
| 1888 | return t; |
| 1889 | } |
| 1890 | return t->is_oopptr(); |
| 1891 | } |
| 1892 | |
| 1893 | const Type* ShenandoahIUBarrierNode::Value(PhaseGVN* phase) const { |
| 1894 | if (in(1) == NULL__null) { |
| 1895 | return Type::TOP; |
| 1896 | } |
| 1897 | const Type* t = phase->type(in(1)); |
| 1898 | if (t == Type::TOP) { |
| 1899 | return Type::TOP; |
| 1900 | } |
| 1901 | if (t == TypePtr::NULL_PTR) { |
| 1902 | return t; |
| 1903 | } |
| 1904 | return t->is_oopptr(); |
| 1905 | } |
| 1906 | |
| 1907 | int ShenandoahIUBarrierNode::needed(Node* n) { |
| 1908 | if (n == NULL__null || |
| 1909 | n->is_Allocate() || |
| 1910 | n->Opcode() == Op_ShenandoahIUBarrier || |
| 1911 | n->bottom_type() == TypePtr::NULL_PTR || |
| 1912 | (n->bottom_type()->make_oopptr() != NULL__null && n->bottom_type()->make_oopptr()->const_oop() != NULL__null)) { |
| 1913 | return NotNeeded; |
| 1914 | } |
| 1915 | if (n->is_Phi() || |
| 1916 | n->is_CMove()) { |
| 1917 | return MaybeNeeded; |
| 1918 | } |
| 1919 | return Needed; |
| 1920 | } |
| 1921 | |
| 1922 | Node* ShenandoahIUBarrierNode::next(Node* n) { |
| 1923 | for (;;) { |
| 1924 | if (n == NULL__null) { |
| 1925 | return n; |
| 1926 | } else if (n->bottom_type() == TypePtr::NULL_PTR) { |
| 1927 | return n; |
| 1928 | } else if (n->bottom_type()->make_oopptr() != NULL__null && n->bottom_type()->make_oopptr()->const_oop() != NULL__null) { |
| 1929 | return n; |
| 1930 | } else if (n->is_ConstraintCast() || |
| 1931 | n->Opcode() == Op_DecodeN || |
| 1932 | n->Opcode() == Op_EncodeP) { |
| 1933 | n = n->in(1); |
| 1934 | } else if (n->is_Proj()) { |
| 1935 | n = n->in(0); |
| 1936 | } else { |
| 1937 | return n; |
| 1938 | } |
| 1939 | } |
| 1940 | ShouldNotReachHere()do { (*g_assert_poison) = 'X';; report_should_not_reach_here( "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1940); ::breakpoint(); } while (0); |
| 1941 | return NULL__null; |
| 1942 | } |
| 1943 | |
| 1944 | Node* ShenandoahIUBarrierNode::Identity(PhaseGVN* phase) { |
| 1945 | PhaseIterGVN* igvn = phase->is_IterGVN(); |
| 1946 | |
| 1947 | Node* n = next(in(1)); |
| 1948 | |
| 1949 | int cont = needed(n); |
| 1950 | |
| 1951 | if (cont == NotNeeded) { |
| 1952 | return in(1); |
| 1953 | } else if (cont == MaybeNeeded) { |
| 1954 | if (igvn == NULL__null) { |
| 1955 | phase->record_for_igvn(this); |
| 1956 | return this; |
| 1957 | } else { |
| 1958 | ResourceMark rm; |
| 1959 | Unique_Node_List wq; |
| 1960 | uint wq_i = 0; |
| 1961 | |
| 1962 | for (;;) { |
| 1963 | if (n->is_Phi()) { |
| 1964 | for (uint i = 1; i < n->req(); i++) { |
| 1965 | Node* m = n->in(i); |
| 1966 | if (m != NULL__null) { |
| 1967 | wq.push(m); |
| 1968 | } |
| 1969 | } |
| 1970 | } else { |
| 1971 | assert(n->is_CMove(), "nothing else here")do { if (!(n->is_CMove())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 1971, "assert(" "n->is_CMove()" ") failed", "nothing else here" ); ::breakpoint(); } } while (0); |
| 1972 | Node* m = n->in(CMoveNode::IfFalse); |
| 1973 | wq.push(m); |
| 1974 | m = n->in(CMoveNode::IfTrue); |
| 1975 | wq.push(m); |
| 1976 | } |
| 1977 | Node* orig_n = NULL__null; |
| 1978 | do { |
| 1979 | if (wq_i >= wq.size()) { |
| 1980 | return in(1); |
| 1981 | } |
| 1982 | n = wq.at(wq_i); |
| 1983 | wq_i++; |
| 1984 | orig_n = n; |
| 1985 | n = next(n); |
| 1986 | cont = needed(n); |
| 1987 | if (cont == Needed) { |
| 1988 | return this; |
| 1989 | } |
| 1990 | } while (cont != MaybeNeeded || (orig_n != n && wq.member(n))); |
| 1991 | } |
| 1992 | } |
| 1993 | } |
| 1994 | |
| 1995 | return this; |
| 1996 | } |
| 1997 | |
| 1998 | #ifdef ASSERT1 |
| 1999 | static bool has_never_branch(Node* root) { |
| 2000 | for (uint i = 1; i < root->req(); i++) { |
| 2001 | Node* in = root->in(i); |
| 2002 | if (in != NULL__null && in->Opcode() == Op_Halt && in->in(0)->is_Proj() && in->in(0)->in(0)->Opcode() == Op_NeverBranch) { |
| 2003 | return true; |
| 2004 | } |
| 2005 | } |
| 2006 | return false; |
| 2007 | } |
| 2008 | #endif |
| 2009 | |
| 2010 | void MemoryGraphFixer::collect_memory_nodes() { |
| 2011 | Node_Stack stack(0); |
| 2012 | VectorSet visited; |
| 2013 | Node_List regions; |
| 2014 | |
| 2015 | // Walk the raw memory graph and create a mapping from CFG node to |
| 2016 | // memory node. Exclude phis for now. |
| 2017 | stack.push(_phase->C->root(), 1); |
| 2018 | do { |
| 2019 | Node* n = stack.node(); |
| 2020 | int opc = n->Opcode(); |
| 2021 | uint i = stack.index(); |
| 2022 | if (i < n->req()) { |
| 2023 | Node* mem = NULL__null; |
| 2024 | if (opc == Op_Root) { |
| 2025 | Node* in = n->in(i); |
| 2026 | int in_opc = in->Opcode(); |
| 2027 | if (in_opc == Op_Return || in_opc == Op_Rethrow) { |
| 2028 | mem = in->in(TypeFunc::Memory); |
| 2029 | } else if (in_opc == Op_Halt) { |
| 2030 | if (in->in(0)->is_Region()) { |
| 2031 | Node* r = in->in(0); |
| 2032 | for (uint j = 1; j < r->req(); j++) { |
| 2033 | assert(r->in(j)->Opcode() != Op_NeverBranch, "")do { if (!(r->in(j)->Opcode() != Op_NeverBranch)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2033, "assert(" "r->in(j)->Opcode() != Op_NeverBranch" ") failed", ""); ::breakpoint(); } } while (0); |
| 2034 | } |
| 2035 | } else { |
| 2036 | Node* proj = in->in(0); |
| 2037 | assert(proj->is_Proj(), "")do { if (!(proj->is_Proj())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2037, "assert(" "proj->is_Proj()" ") failed", ""); ::breakpoint (); } } while (0); |
| 2038 | Node* in = proj->in(0); |
| 2039 | assert(in->is_CallStaticJava() || in->Opcode() == Op_NeverBranch || in->Opcode() == Op_Catch || proj->is_IfProj(), "")do { if (!(in->is_CallStaticJava() || in->Opcode() == Op_NeverBranch || in->Opcode() == Op_Catch || proj->is_IfProj())) { ( *g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2039, "assert(" "in->is_CallStaticJava() || in->Opcode() == Op_NeverBranch || in->Opcode() == Op_Catch || proj->is_IfProj()" ") failed", ""); ::breakpoint(); } } while (0); |
| 2040 | if (in->is_CallStaticJava()) { |
| 2041 | mem = in->in(TypeFunc::Memory); |
| 2042 | } else if (in->Opcode() == Op_Catch) { |
| 2043 | Node* call = in->in(0)->in(0); |
| 2044 | assert(call->is_Call(), "")do { if (!(call->is_Call())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2044, "assert(" "call->is_Call()" ") failed", ""); ::breakpoint (); } } while (0); |
| 2045 | mem = call->in(TypeFunc::Memory); |
| 2046 | } else if (in->Opcode() == Op_NeverBranch) { |
| 2047 | mem = collect_memory_for_infinite_loop(in); |
| 2048 | } |
| 2049 | } |
| 2050 | } else { |
| 2051 | #ifdef ASSERT1 |
| 2052 | n->dump(); |
| 2053 | in->dump(); |
| 2054 | #endif |
| 2055 | ShouldNotReachHere()do { (*g_assert_poison) = 'X';; report_should_not_reach_here( "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2055); ::breakpoint(); } while (0); |
| 2056 | } |
| 2057 | } else { |
| 2058 | assert(n->is_Phi() && n->bottom_type() == Type::MEMORY, "")do { if (!(n->is_Phi() && n->bottom_type() == Type ::MEMORY)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2058, "assert(" "n->is_Phi() && n->bottom_type() == Type::MEMORY" ") failed", ""); ::breakpoint(); } } while (0); |
| 2059 | assert(n->adr_type() == TypePtr::BOTTOM || _phase->C->get_alias_index(n->adr_type()) == _alias, "")do { if (!(n->adr_type() == TypePtr::BOTTOM || _phase-> C->get_alias_index(n->adr_type()) == _alias)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2059, "assert(" "n->adr_type() == TypePtr::BOTTOM || _phase->C->get_alias_index(n->adr_type()) == _alias" ") failed", ""); ::breakpoint(); } } while (0); |
| 2060 | mem = n->in(i); |
| 2061 | } |
| 2062 | i++; |
| 2063 | stack.set_index(i); |
| 2064 | if (mem == NULL__null) { |
| 2065 | continue; |
| 2066 | } |
| 2067 | for (;;) { |
| 2068 | if (visited.test_set(mem->_idx) || mem->is_Start()) { |
| 2069 | break; |
| 2070 | } |
| 2071 | if (mem->is_Phi()) { |
| 2072 | stack.push(mem, 2); |
| 2073 | mem = mem->in(1); |
| 2074 | } else if (mem->is_Proj()) { |
| 2075 | stack.push(mem, mem->req()); |
| 2076 | mem = mem->in(0); |
| 2077 | } else if (mem->is_SafePoint() || mem->is_MemBar()) { |
| 2078 | mem = mem->in(TypeFunc::Memory); |
| 2079 | } else if (mem->is_MergeMem()) { |
| 2080 | MergeMemNode* mm = mem->as_MergeMem(); |
| 2081 | mem = mm->memory_at(_alias); |
| 2082 | } else if (mem->is_Store() || mem->is_LoadStore() || mem->is_ClearArray()) { |
| 2083 | assert(_alias == Compile::AliasIdxRaw, "")do { if (!(_alias == Compile::AliasIdxRaw)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2083, "assert(" "_alias == Compile::AliasIdxRaw" ") failed" , ""); ::breakpoint(); } } while (0); |
| 2084 | stack.push(mem, mem->req()); |
| 2085 | mem = mem->in(MemNode::Memory); |
| 2086 | } else { |
| 2087 | #ifdef ASSERT1 |
| 2088 | mem->dump(); |
| 2089 | #endif |
| 2090 | ShouldNotReachHere()do { (*g_assert_poison) = 'X';; report_should_not_reach_here( "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2090); ::breakpoint(); } while (0); |
| 2091 | } |
| 2092 | } |
| 2093 | } else { |
| 2094 | if (n->is_Phi()) { |
| 2095 | // Nothing |
| 2096 | } else if (!n->is_Root()) { |
| 2097 | Node* c = get_ctrl(n); |
| 2098 | _memory_nodes.map(c->_idx, n); |
| 2099 | } |
| 2100 | stack.pop(); |
| 2101 | } |
| 2102 | } while(stack.is_nonempty()); |
| 2103 | |
| 2104 | // Iterate over CFG nodes in rpo and propagate memory state to |
| 2105 | // compute memory state at regions, creating new phis if needed. |
| 2106 | Node_List rpo_list; |
| 2107 | visited.clear(); |
| 2108 | _phase->rpo(_phase->C->root(), stack, visited, rpo_list); |
| 2109 | Node* root = rpo_list.pop(); |
| 2110 | assert(root == _phase->C->root(), "")do { if (!(root == _phase->C->root())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2110, "assert(" "root == _phase->C->root()" ") failed" , ""); ::breakpoint(); } } while (0); |
| 2111 | |
| 2112 | const bool trace = false; |
| 2113 | #ifdef ASSERT1 |
| 2114 | if (trace) { |
| 2115 | for (int i = rpo_list.size() - 1; i >= 0; i--) { |
| 2116 | Node* c = rpo_list.at(i); |
| 2117 | if (_memory_nodes[c->_idx] != NULL__null) { |
| 2118 | tty->print("X %d", c->_idx); _memory_nodes[c->_idx]->dump(); |
| 2119 | } |
| 2120 | } |
| 2121 | } |
| 2122 | #endif |
| 2123 | uint last = _phase->C->unique(); |
| 2124 | |
| 2125 | #ifdef ASSERT1 |
| 2126 | uint16_t max_depth = 0; |
| 2127 | for (LoopTreeIterator iter(_phase->ltree_root()); !iter.done(); iter.next()) { |
| 2128 | IdealLoopTree* lpt = iter.current(); |
| 2129 | max_depth = MAX2(max_depth, lpt->_nest); |
| 2130 | } |
| 2131 | #endif |
| 2132 | |
| 2133 | bool progress = true; |
| 2134 | int iteration = 0; |
| 2135 | Node_List dead_phis; |
| 2136 | while (progress) { |
| 2137 | progress = false; |
| 2138 | iteration++; |
| 2139 | assert(iteration <= 2+max_depth || _phase->C->has_irreducible_loop() || has_never_branch(_phase->C->root()), "")do { if (!(iteration <= 2+max_depth || _phase->C->has_irreducible_loop () || has_never_branch(_phase->C->root()))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2139, "assert(" "iteration <= 2+max_depth || _phase->C->has_irreducible_loop() || has_never_branch(_phase->C->root())" ") failed", ""); ::breakpoint(); } } while (0); |
| 2140 | if (trace) { tty->print_cr("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"); } |
| 2141 | |
| 2142 | for (int i = rpo_list.size() - 1; i >= 0; i--) { |
| 2143 | Node* c = rpo_list.at(i); |
| 2144 | |
| 2145 | Node* prev_mem = _memory_nodes[c->_idx]; |
| 2146 | if (c->is_Region() && (_include_lsm || !c->is_OuterStripMinedLoop())) { |
| 2147 | Node* prev_region = regions[c->_idx]; |
| 2148 | Node* unique = NULL__null; |
| 2149 | for (uint j = 1; j < c->req() && unique != NodeSentinel(Node*)-1; j++) { |
| 2150 | Node* m = _memory_nodes[c->in(j)->_idx]; |
| 2151 | assert(m != NULL || (c->is_Loop() && j == LoopNode::LoopBackControl && iteration == 1) || _phase->C->has_irreducible_loop() || has_never_branch(_phase->C->root()), "expect memory state")do { if (!(m != __null || (c->is_Loop() && j == LoopNode ::LoopBackControl && iteration == 1) || _phase->C-> has_irreducible_loop() || has_never_branch(_phase->C->root ()))) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2151, "assert(" "m != __null || (c->is_Loop() && j == LoopNode::LoopBackControl && iteration == 1) || _phase->C->has_irreducible_loop() || has_never_branch(_phase->C->root())" ") failed", "expect memory state"); ::breakpoint(); } } while (0); |
| 2152 | if (m != NULL__null) { |
| 2153 | if (m == prev_region && ((c->is_Loop() && j == LoopNode::LoopBackControl) || (prev_region->is_Phi() && prev_region->in(0) == c))) { |
| 2154 | assert(c->is_Loop() && j == LoopNode::LoopBackControl || _phase->C->has_irreducible_loop() || has_never_branch(_phase->C->root()), "")do { if (!(c->is_Loop() && j == LoopNode::LoopBackControl || _phase->C->has_irreducible_loop() || has_never_branch (_phase->C->root()))) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2154, "assert(" "c->is_Loop() && j == LoopNode::LoopBackControl || _phase->C->has_irreducible_loop() || has_never_branch(_phase->C->root())" ") failed", ""); ::breakpoint(); } } while (0); |
| 2155 | // continue |
| 2156 | } else if (unique == NULL__null) { |
| 2157 | unique = m; |
| 2158 | } else if (m == unique) { |
| 2159 | // continue |
| 2160 | } else { |
| 2161 | unique = NodeSentinel(Node*)-1; |
| 2162 | } |
| 2163 | } |
| 2164 | } |
| 2165 | assert(unique != NULL, "empty phi???")do { if (!(unique != __null)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2165, "assert(" "unique != __null" ") failed", "empty phi???" ); ::breakpoint(); } } while (0); |
| 2166 | if (unique != NodeSentinel(Node*)-1) { |
| 2167 | if (prev_region != NULL__null && prev_region->is_Phi() && prev_region->in(0) == c) { |
| 2168 | dead_phis.push(prev_region); |
| 2169 | } |
| 2170 | regions.map(c->_idx, unique); |
| 2171 | } else { |
| 2172 | Node* phi = NULL__null; |
| 2173 | if (prev_region != NULL__null && prev_region->is_Phi() && prev_region->in(0) == c && prev_region->_idx >= last) { |
| 2174 | phi = prev_region; |
| 2175 | for (uint k = 1; k < c->req(); k++) { |
| 2176 | Node* m = _memory_nodes[c->in(k)->_idx]; |
| 2177 | assert(m != NULL, "expect memory state")do { if (!(m != __null)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2177, "assert(" "m != __null" ") failed", "expect memory state" ); ::breakpoint(); } } while (0); |
| 2178 | phi->set_req(k, m); |
| 2179 | } |
| 2180 | } else { |
| 2181 | for (DUIterator_Fast jmax, j = c->fast_outs(jmax); j < jmax && phi == NULL__null; j++) { |
| 2182 | Node* u = c->fast_out(j); |
| 2183 | if (u->is_Phi() && u->bottom_type() == Type::MEMORY && |
| 2184 | (u->adr_type() == TypePtr::BOTTOM || _phase->C->get_alias_index(u->adr_type()) == _alias)) { |
| 2185 | phi = u; |
| 2186 | for (uint k = 1; k < c->req() && phi != NULL__null; k++) { |
| 2187 | Node* m = _memory_nodes[c->in(k)->_idx]; |
| 2188 | assert(m != NULL, "expect memory state")do { if (!(m != __null)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2188, "assert(" "m != __null" ") failed", "expect memory state" ); ::breakpoint(); } } while (0); |
| 2189 | if (u->in(k) != m) { |
| 2190 | phi = NodeSentinel(Node*)-1; |
| 2191 | } |
| 2192 | } |
| 2193 | } |
| 2194 | } |
| 2195 | if (phi == NodeSentinel(Node*)-1) { |
| 2196 | phi = new PhiNode(c, Type::MEMORY, _phase->C->get_adr_type(_alias)); |
| 2197 | for (uint k = 1; k < c->req(); k++) { |
| 2198 | Node* m = _memory_nodes[c->in(k)->_idx]; |
| 2199 | assert(m != NULL, "expect memory state")do { if (!(m != __null)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2199, "assert(" "m != __null" ") failed", "expect memory state" ); ::breakpoint(); } } while (0); |
| 2200 | phi->init_req(k, m); |
| 2201 | } |
| 2202 | } |
| 2203 | } |
| 2204 | if (phi != NULL__null) { |
| 2205 | regions.map(c->_idx, phi); |
| 2206 | } else { |
| 2207 | assert(c->unique_ctrl_out()->Opcode() == Op_Halt, "expected memory state")do { if (!(c->unique_ctrl_out()->Opcode() == Op_Halt)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2207, "assert(" "c->unique_ctrl_out()->Opcode() == Op_Halt" ") failed", "expected memory state"); ::breakpoint(); } } while (0); |
| 2208 | } |
| 2209 | } |
| 2210 | Node* current_region = regions[c->_idx]; |
| 2211 | if (current_region != prev_region) { |
| 2212 | progress = true; |
| 2213 | if (prev_region == prev_mem) { |
| 2214 | _memory_nodes.map(c->_idx, current_region); |
| 2215 | } |
| 2216 | } |
| 2217 | } else if (prev_mem == NULL__null || prev_mem->is_Phi() || ctrl_or_self(prev_mem) != c) { |
| 2218 | Node* m = _memory_nodes[_phase->idom(c)->_idx]; |
| 2219 | assert(m != NULL || c->Opcode() == Op_Halt, "expect memory state")do { if (!(m != __null || c->Opcode() == Op_Halt)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2219, "assert(" "m != __null || c->Opcode() == Op_Halt" ") failed" , "expect memory state"); ::breakpoint(); } } while (0); |
| 2220 | if (m != prev_mem) { |
| 2221 | _memory_nodes.map(c->_idx, m); |
| 2222 | progress = true; |
| 2223 | } |
| 2224 | } |
| 2225 | #ifdef ASSERT1 |
| 2226 | if (trace) { tty->print("X %d", c->_idx); _memory_nodes[c->_idx]->dump(); } |
| 2227 | #endif |
| 2228 | } |
| 2229 | } |
| 2230 | |
| 2231 | // Replace existing phi with computed memory state for that region |
| 2232 | // if different (could be a new phi or a dominating memory node if |
| 2233 | // that phi was found to be useless). |
| 2234 | while (dead_phis.size() > 0) { |
| 2235 | Node* n = dead_phis.pop(); |
| 2236 | n->replace_by(_phase->C->top()); |
| 2237 | n->destruct(&_phase->igvn()); |
| 2238 | } |
| 2239 | for (int i = rpo_list.size() - 1; i >= 0; i--) { |
| 2240 | Node* c = rpo_list.at(i); |
| 2241 | if (c->is_Region() && (_include_lsm || !c->is_OuterStripMinedLoop())) { |
| 2242 | Node* n = regions[c->_idx]; |
| 2243 | assert(n != NULL || c->unique_ctrl_out()->Opcode() == Op_Halt, "expected memory state")do { if (!(n != __null || c->unique_ctrl_out()->Opcode( ) == Op_Halt)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2243, "assert(" "n != __null || c->unique_ctrl_out()->Opcode() == Op_Halt" ") failed", "expected memory state"); ::breakpoint(); } } while (0); |
| 2244 | if (n != NULL__null && n->is_Phi() && n->_idx >= last && n->in(0) == c) { |
| 2245 | _phase->register_new_node(n, c); |
| 2246 | } |
| 2247 | } |
| 2248 | } |
| 2249 | for (int i = rpo_list.size() - 1; i >= 0; i--) { |
| 2250 | Node* c = rpo_list.at(i); |
| 2251 | if (c->is_Region() && (_include_lsm || !c->is_OuterStripMinedLoop())) { |
| 2252 | Node* n = regions[c->_idx]; |
| 2253 | assert(n != NULL || c->unique_ctrl_out()->Opcode() == Op_Halt, "expected memory state")do { if (!(n != __null || c->unique_ctrl_out()->Opcode( ) == Op_Halt)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2253, "assert(" "n != __null || c->unique_ctrl_out()->Opcode() == Op_Halt" ") failed", "expected memory state"); ::breakpoint(); } } while (0); |
| 2254 | for (DUIterator_Fast imax, i = c->fast_outs(imax); i < imax; i++) { |
| 2255 | Node* u = c->fast_out(i); |
| 2256 | if (u->is_Phi() && u->bottom_type() == Type::MEMORY && |
| 2257 | u != n) { |
| 2258 | assert(c->unique_ctrl_out()->Opcode() != Op_Halt, "expected memory state")do { if (!(c->unique_ctrl_out()->Opcode() != Op_Halt)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2258, "assert(" "c->unique_ctrl_out()->Opcode() != Op_Halt" ") failed", "expected memory state"); ::breakpoint(); } } while (0); |
| 2259 | if (u->adr_type() == TypePtr::BOTTOM) { |
| 2260 | fix_memory_uses(u, n, n, c); |
| 2261 | } else if (_phase->C->get_alias_index(u->adr_type()) == _alias) { |
| 2262 | _phase->lazy_replace(u, n); |
| 2263 | --i; --imax; |
| 2264 | } |
| 2265 | } |
| 2266 | } |
| 2267 | } |
| 2268 | } |
| 2269 | } |
| 2270 | |
| 2271 | Node* MemoryGraphFixer::collect_memory_for_infinite_loop(const Node* in) { |
| 2272 | Node* mem = NULL__null; |
| 2273 | Node* head = in->in(0); |
| 2274 | assert(head->is_Region(), "unexpected infinite loop graph shape")do { if (!(head->is_Region())) { (*g_assert_poison) = 'X'; ; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2274, "assert(" "head->is_Region()" ") failed", "unexpected infinite loop graph shape" ); ::breakpoint(); } } while (0); |
| 2275 | |
| 2276 | Node* phi_mem = NULL__null; |
| 2277 | for (DUIterator_Fast jmax, j = head->fast_outs(jmax); j < jmax; j++) { |
| 2278 | Node* u = head->fast_out(j); |
| 2279 | if (u->is_Phi() && u->bottom_type() == Type::MEMORY) { |
| 2280 | if (_phase->C->get_alias_index(u->adr_type()) == _alias) { |
| 2281 | assert(phi_mem == NULL || phi_mem->adr_type() == TypePtr::BOTTOM, "")do { if (!(phi_mem == __null || phi_mem->adr_type() == TypePtr ::BOTTOM)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2281, "assert(" "phi_mem == __null || phi_mem->adr_type() == TypePtr::BOTTOM" ") failed", ""); ::breakpoint(); } } while (0); |
| 2282 | phi_mem = u; |
| 2283 | } else if (u->adr_type() == TypePtr::BOTTOM) { |
| 2284 | assert(phi_mem == NULL || _phase->C->get_alias_index(phi_mem->adr_type()) == _alias, "")do { if (!(phi_mem == __null || _phase->C->get_alias_index (phi_mem->adr_type()) == _alias)) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2284, "assert(" "phi_mem == __null || _phase->C->get_alias_index(phi_mem->adr_type()) == _alias" ") failed", ""); ::breakpoint(); } } while (0); |
| 2285 | if (phi_mem == NULL__null) { |
| 2286 | phi_mem = u; |
| 2287 | } |
| 2288 | } |
| 2289 | } |
| 2290 | } |
| 2291 | if (phi_mem == NULL__null) { |
| 2292 | ResourceMark rm; |
| 2293 | Node_Stack stack(0); |
| 2294 | stack.push(head, 1); |
| 2295 | do { |
| 2296 | Node* n = stack.node(); |
| 2297 | uint i = stack.index(); |
| 2298 | if (i >= n->req()) { |
| 2299 | stack.pop(); |
| 2300 | } else { |
| 2301 | stack.set_index(i + 1); |
| 2302 | Node* c = n->in(i); |
| 2303 | assert(c != head, "should have found a safepoint on the way")do { if (!(c != head)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2303, "assert(" "c != head" ") failed", "should have found a safepoint on the way" ); ::breakpoint(); } } while (0); |
| 2304 | if (stack.size() != 1 || _phase->is_dominator(head, c)) { |
| 2305 | for (;;) { |
| 2306 | if (c->is_Region()) { |
| 2307 | stack.push(c, 1); |
| 2308 | break; |
| 2309 | } else if (c->is_SafePoint() && !c->is_CallLeaf()) { |
| 2310 | Node* m = c->in(TypeFunc::Memory); |
| 2311 | if (m->is_MergeMem()) { |
| 2312 | m = m->as_MergeMem()->memory_at(_alias); |
| 2313 | } |
| 2314 | assert(mem == NULL || mem == m, "several memory states")do { if (!(mem == __null || mem == m)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2314, "assert(" "mem == __null || mem == m" ") failed", "several memory states" ); ::breakpoint(); } } while (0); |
| 2315 | mem = m; |
| 2316 | break; |
| 2317 | } else { |
| 2318 | assert(c != c->in(0), "")do { if (!(c != c->in(0))) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2318, "assert(" "c != c->in(0)" ") failed", ""); ::breakpoint (); } } while (0); |
| 2319 | c = c->in(0); |
| 2320 | } |
| 2321 | } |
| 2322 | } |
| 2323 | } |
| 2324 | } while (stack.size() > 0); |
| 2325 | assert(mem != NULL, "should have found safepoint")do { if (!(mem != __null)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2325, "assert(" "mem != __null" ") failed", "should have found safepoint" ); ::breakpoint(); } } while (0); |
| 2326 | } else { |
| 2327 | mem = phi_mem; |
| 2328 | } |
| 2329 | return mem; |
| 2330 | } |
| 2331 | |
| 2332 | Node* MemoryGraphFixer::get_ctrl(Node* n) const { |
| 2333 | Node* c = _phase->get_ctrl(n); |
| 2334 | if (n->is_Proj() && n->in(0) != NULL__null && n->in(0)->is_Call()) { |
| 2335 | assert(c == n->in(0), "")do { if (!(c == n->in(0))) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2335, "assert(" "c == n->in(0)" ") failed", ""); ::breakpoint (); } } while (0); |
| 2336 | CallNode* call = c->as_Call(); |
| 2337 | CallProjections projs; |
| 2338 | call->extract_projections(&projs, true, false); |
| 2339 | if (projs.catchall_memproj != NULL__null) { |
| 2340 | if (projs.fallthrough_memproj == n) { |
| 2341 | c = projs.fallthrough_catchproj; |
| 2342 | } else { |
| 2343 | assert(projs.catchall_memproj == n, "")do { if (!(projs.catchall_memproj == n)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2343, "assert(" "projs.catchall_memproj == n" ") failed", "" ); ::breakpoint(); } } while (0); |
| 2344 | c = projs.catchall_catchproj; |
| 2345 | } |
| 2346 | } |
| 2347 | } |
| 2348 | return c; |
| 2349 | } |
| 2350 | |
| 2351 | Node* MemoryGraphFixer::ctrl_or_self(Node* n) const { |
| 2352 | if (_phase->has_ctrl(n)) |
| 2353 | return get_ctrl(n); |
| 2354 | else { |
| 2355 | assert (n->is_CFG(), "must be a CFG node")do { if (!(n->is_CFG())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2355, "assert(" "n->is_CFG()" ") failed", "must be a CFG node" ); ::breakpoint(); } } while (0); |
| 2356 | return n; |
| 2357 | } |
| 2358 | } |
| 2359 | |
| 2360 | bool MemoryGraphFixer::mem_is_valid(Node* m, Node* c) const { |
| 2361 | return m != NULL__null && get_ctrl(m) == c; |
| 2362 | } |
| 2363 | |
| 2364 | Node* MemoryGraphFixer::find_mem(Node* ctrl, Node* n) const { |
| 2365 | assert(n == NULL || _phase->ctrl_or_self(n) == ctrl, "")do { if (!(n == __null || _phase->ctrl_or_self(n) == ctrl) ) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2365, "assert(" "n == __null || _phase->ctrl_or_self(n) == ctrl" ") failed", ""); ::breakpoint(); } } while (0); |
| 2366 | assert(!ctrl->is_Call() || ctrl == n, "projection expected")do { if (!(!ctrl->is_Call() || ctrl == n)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2366, "assert(" "!ctrl->is_Call() || ctrl == n" ") failed" , "projection expected"); ::breakpoint(); } } while (0); |
| 2367 | #ifdef ASSERT1 |
| 2368 | if ((ctrl->is_Proj() && ctrl->in(0)->is_Call()) || |
| 2369 | (ctrl->is_Catch() && ctrl->in(0)->in(0)->is_Call())) { |
| 2370 | CallNode* call = ctrl->is_Proj() ? ctrl->in(0)->as_Call() : ctrl->in(0)->in(0)->as_Call(); |
| 2371 | int mems = 0; |
| 2372 | for (DUIterator_Fast imax, i = call->fast_outs(imax); i < imax; i++) { |
| 2373 | Node* u = call->fast_out(i); |
| 2374 | if (u->bottom_type() == Type::MEMORY) { |
| 2375 | mems++; |
| 2376 | } |
| 2377 | } |
| 2378 | assert(mems <= 1, "No node right after call if multiple mem projections")do { if (!(mems <= 1)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2378, "assert(" "mems <= 1" ") failed", "No node right after call if multiple mem projections" ); ::breakpoint(); } } while (0); |
| 2379 | } |
| 2380 | #endif |
| 2381 | Node* mem = _memory_nodes[ctrl->_idx]; |
| 2382 | Node* c = ctrl; |
| 2383 | while (!mem_is_valid(mem, c) && |
| 2384 | (!c->is_CatchProj() || mem == NULL__null || c->in(0)->in(0)->in(0) != get_ctrl(mem))) { |
| 2385 | c = _phase->idom(c); |
| 2386 | mem = _memory_nodes[c->_idx]; |
| 2387 | } |
| 2388 | if (n != NULL__null && mem_is_valid(mem, c)) { |
| 2389 | while (!ShenandoahBarrierC2Support::is_dominator_same_ctrl(c, mem, n, _phase) && _phase->ctrl_or_self(mem) == ctrl) { |
| 2390 | mem = next_mem(mem, _alias); |
| 2391 | } |
| 2392 | if (mem->is_MergeMem()) { |
| 2393 | mem = mem->as_MergeMem()->memory_at(_alias); |
| 2394 | } |
| 2395 | if (!mem_is_valid(mem, c)) { |
| 2396 | do { |
| 2397 | c = _phase->idom(c); |
| 2398 | mem = _memory_nodes[c->_idx]; |
| 2399 | } while (!mem_is_valid(mem, c) && |
| 2400 | (!c->is_CatchProj() || mem == NULL__null || c->in(0)->in(0)->in(0) != get_ctrl(mem))); |
| 2401 | } |
| 2402 | } |
| 2403 | assert(mem->bottom_type() == Type::MEMORY, "")do { if (!(mem->bottom_type() == Type::MEMORY)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2403, "assert(" "mem->bottom_type() == Type::MEMORY" ") failed" , ""); ::breakpoint(); } } while (0); |
| 2404 | return mem; |
| 2405 | } |
| 2406 | |
| 2407 | bool MemoryGraphFixer::has_mem_phi(Node* region) const { |
| 2408 | for (DUIterator_Fast imax, i = region->fast_outs(imax); i < imax; i++) { |
| 2409 | Node* use = region->fast_out(i); |
| 2410 | if (use->is_Phi() && use->bottom_type() == Type::MEMORY && |
| 2411 | (_phase->C->get_alias_index(use->adr_type()) == _alias)) { |
| 2412 | return true; |
| 2413 | } |
| 2414 | } |
| 2415 | return false; |
| 2416 | } |
| 2417 | |
| 2418 | void MemoryGraphFixer::fix_mem(Node* ctrl, Node* new_ctrl, Node* mem, Node* mem_for_ctrl, Node* new_mem, Unique_Node_List& uses) { |
| 2419 | assert(_phase->ctrl_or_self(new_mem) == new_ctrl, "")do { if (!(_phase->ctrl_or_self(new_mem) == new_ctrl)) { ( *g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2419, "assert(" "_phase->ctrl_or_self(new_mem) == new_ctrl" ") failed", ""); ::breakpoint(); } } while (0); |
| 2420 | const bool trace = false; |
| 2421 | DEBUG_ONLY(if (trace) { tty->print("ZZZ control is"); ctrl->dump(); })if (trace) { tty->print("ZZZ control is"); ctrl->dump() ; }; |
| 2422 | DEBUG_ONLY(if (trace) { tty->print("ZZZ mem is"); mem->dump(); })if (trace) { tty->print("ZZZ mem is"); mem->dump(); }; |
| 2423 | GrowableArray<Node*> phis; |
| 2424 | if (mem_for_ctrl != mem) { |
| 2425 | Node* old = mem_for_ctrl; |
| 2426 | Node* prev = NULL__null; |
| 2427 | while (old != mem) { |
| 2428 | prev = old; |
| 2429 | if (old->is_Store() || old->is_ClearArray() || old->is_LoadStore()) { |
| 2430 | assert(_alias == Compile::AliasIdxRaw, "")do { if (!(_alias == Compile::AliasIdxRaw)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2430, "assert(" "_alias == Compile::AliasIdxRaw" ") failed" , ""); ::breakpoint(); } } while (0); |
| 2431 | old = old->in(MemNode::Memory); |
| 2432 | } else if (old->Opcode() == Op_SCMemProj) { |
| 2433 | assert(_alias == Compile::AliasIdxRaw, "")do { if (!(_alias == Compile::AliasIdxRaw)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2433, "assert(" "_alias == Compile::AliasIdxRaw" ") failed" , ""); ::breakpoint(); } } while (0); |
| 2434 | old = old->in(0); |
| 2435 | } else { |
| 2436 | ShouldNotReachHere()do { (*g_assert_poison) = 'X';; report_should_not_reach_here( "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2436); ::breakpoint(); } while (0); |
| 2437 | } |
| 2438 | } |
| 2439 | assert(prev != NULL, "")do { if (!(prev != __null)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2439, "assert(" "prev != __null" ") failed", ""); ::breakpoint (); } } while (0); |
| 2440 | if (new_ctrl != ctrl) { |
| 2441 | _memory_nodes.map(ctrl->_idx, mem); |
| 2442 | _memory_nodes.map(new_ctrl->_idx, mem_for_ctrl); |
| 2443 | } |
| 2444 | uint input = (uint)MemNode::Memory; |
| 2445 | _phase->igvn().replace_input_of(prev, input, new_mem); |
| 2446 | } else { |
| 2447 | uses.clear(); |
| 2448 | _memory_nodes.map(new_ctrl->_idx, new_mem); |
| 2449 | uses.push(new_ctrl); |
| 2450 | for(uint next = 0; next < uses.size(); next++ ) { |
| 2451 | Node *n = uses.at(next); |
| 2452 | assert(n->is_CFG(), "")do { if (!(n->is_CFG())) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2452, "assert(" "n->is_CFG()" ") failed", ""); ::breakpoint (); } } while (0); |
| 2453 | DEBUG_ONLY(if (trace) { tty->print("ZZZ ctrl"); n->dump(); })if (trace) { tty->print("ZZZ ctrl"); n->dump(); }; |
| 2454 | for (DUIterator_Fast imax, i = n->fast_outs(imax); i < imax; i++) { |
| 2455 | Node* u = n->fast_out(i); |
| 2456 | if (!u->is_Root() && u->is_CFG() && u != n) { |
| 2457 | Node* m = _memory_nodes[u->_idx]; |
| 2458 | if (u->is_Region() && (!u->is_OuterStripMinedLoop() || _include_lsm) && |
| 2459 | !has_mem_phi(u) && |
| 2460 | u->unique_ctrl_out()->Opcode() != Op_Halt) { |
| 2461 | DEBUG_ONLY(if (trace) { tty->print("ZZZ region"); u->dump(); })if (trace) { tty->print("ZZZ region"); u->dump(); }; |
| 2462 | DEBUG_ONLY(if (trace && m != NULL) { tty->print("ZZZ mem"); m->dump(); })if (trace && m != __null) { tty->print("ZZZ mem"); m->dump(); }; |
| 2463 | |
| 2464 | if (!mem_is_valid(m, u) || !m->is_Phi()) { |
| 2465 | bool push = true; |
| 2466 | bool create_phi = true; |
| 2467 | if (_phase->is_dominator(new_ctrl, u)) { |
| 2468 | create_phi = false; |
| 2469 | } |
| 2470 | if (create_phi) { |
| 2471 | Node* phi = new PhiNode(u, Type::MEMORY, _phase->C->get_adr_type(_alias)); |
| 2472 | _phase->register_new_node(phi, u); |
| 2473 | phis.push(phi); |
| 2474 | DEBUG_ONLY(if (trace) { tty->print("ZZZ new phi"); phi->dump(); })if (trace) { tty->print("ZZZ new phi"); phi->dump(); }; |
| 2475 | if (!mem_is_valid(m, u)) { |
| 2476 | DEBUG_ONLY(if (trace) { tty->print("ZZZ setting mem"); phi->dump(); })if (trace) { tty->print("ZZZ setting mem"); phi->dump() ; }; |
| 2477 | _memory_nodes.map(u->_idx, phi); |
| 2478 | } else { |
| 2479 | DEBUG_ONLY(if (trace) { tty->print("ZZZ NOT setting mem"); m->dump(); })if (trace) { tty->print("ZZZ NOT setting mem"); m->dump (); }; |
| 2480 | for (;;) { |
| 2481 | assert(m->is_Mem() || m->is_LoadStore() || m->is_Proj(), "")do { if (!(m->is_Mem() || m->is_LoadStore() || m->is_Proj ())) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2481, "assert(" "m->is_Mem() || m->is_LoadStore() || m->is_Proj()" ") failed", ""); ::breakpoint(); } } while (0); |
| 2482 | Node* next = NULL__null; |
| 2483 | if (m->is_Proj()) { |
| 2484 | next = m->in(0); |
| 2485 | } else { |
| 2486 | assert(m->is_Mem() || m->is_LoadStore(), "")do { if (!(m->is_Mem() || m->is_LoadStore())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2486, "assert(" "m->is_Mem() || m->is_LoadStore()" ") failed" , ""); ::breakpoint(); } } while (0); |
| 2487 | assert(_alias == Compile::AliasIdxRaw, "")do { if (!(_alias == Compile::AliasIdxRaw)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2487, "assert(" "_alias == Compile::AliasIdxRaw" ") failed" , ""); ::breakpoint(); } } while (0); |
| 2488 | next = m->in(MemNode::Memory); |
| 2489 | } |
| 2490 | if (_phase->get_ctrl(next) != u) { |
| 2491 | break; |
| 2492 | } |
| 2493 | if (next->is_MergeMem()) { |
| 2494 | assert(_phase->get_ctrl(next->as_MergeMem()->memory_at(_alias)) != u, "")do { if (!(_phase->get_ctrl(next->as_MergeMem()->memory_at (_alias)) != u)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2494, "assert(" "_phase->get_ctrl(next->as_MergeMem()->memory_at(_alias)) != u" ") failed", ""); ::breakpoint(); } } while (0); |
| 2495 | break; |
| 2496 | } |
| 2497 | if (next->is_Phi()) { |
| 2498 | assert(next->adr_type() == TypePtr::BOTTOM && next->in(0) == u, "")do { if (!(next->adr_type() == TypePtr::BOTTOM && next ->in(0) == u)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2498, "assert(" "next->adr_type() == TypePtr::BOTTOM && next->in(0) == u" ") failed", ""); ::breakpoint(); } } while (0); |
| 2499 | break; |
| 2500 | } |
| 2501 | m = next; |
| 2502 | } |
| 2503 | |
| 2504 | DEBUG_ONLY(if (trace) { tty->print("ZZZ setting to phi"); m->dump(); })if (trace) { tty->print("ZZZ setting to phi"); m->dump( ); }; |
| 2505 | assert(m->is_Mem() || m->is_LoadStore(), "")do { if (!(m->is_Mem() || m->is_LoadStore())) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2505, "assert(" "m->is_Mem() || m->is_LoadStore()" ") failed" , ""); ::breakpoint(); } } while (0); |
| 2506 | uint input = (uint)MemNode::Memory; |
| 2507 | _phase->igvn().replace_input_of(m, input, phi); |
| 2508 | push = false; |
| 2509 | } |
| 2510 | } else { |
| 2511 | DEBUG_ONLY(if (trace) { tty->print("ZZZ skipping region"); u->dump(); })if (trace) { tty->print("ZZZ skipping region"); u->dump (); }; |
| 2512 | } |
| 2513 | if (push) { |
| 2514 | uses.push(u); |
| 2515 | } |
| 2516 | } |
| 2517 | } else if (!mem_is_valid(m, u) && |
| 2518 | !(u->Opcode() == Op_CProj && u->in(0)->Opcode() == Op_NeverBranch && u->as_Proj()->_con == 1)) { |
| 2519 | uses.push(u); |
| 2520 | } |
| 2521 | } |
| 2522 | } |
| 2523 | } |
| 2524 | for (int i = 0; i < phis.length(); i++) { |
| 2525 | Node* n = phis.at(i); |
| 2526 | Node* r = n->in(0); |
| 2527 | DEBUG_ONLY(if (trace) { tty->print("ZZZ fixing new phi"); n->dump(); })if (trace) { tty->print("ZZZ fixing new phi"); n->dump( ); }; |
| 2528 | for (uint j = 1; j < n->req(); j++) { |
| 2529 | Node* m = find_mem(r->in(j), NULL__null); |
| 2530 | _phase->igvn().replace_input_of(n, j, m); |
| 2531 | DEBUG_ONLY(if (trace) { tty->print("ZZZ fixing new phi: %d", j); m->dump(); })if (trace) { tty->print("ZZZ fixing new phi: %d", j); m-> dump(); }; |
| 2532 | } |
| 2533 | } |
| 2534 | } |
| 2535 | uint last = _phase->C->unique(); |
| 2536 | MergeMemNode* mm = NULL__null; |
| 2537 | int alias = _alias; |
| 2538 | DEBUG_ONLY(if (trace) { tty->print("ZZZ raw mem is"); mem->dump(); })if (trace) { tty->print("ZZZ raw mem is"); mem->dump(); }; |
| 2539 | // Process loads first to not miss an anti-dependency: if the memory |
| 2540 | // edge of a store is updated before a load is processed then an |
| 2541 | // anti-dependency may be missed. |
| 2542 | for (DUIterator i = mem->outs(); mem->has_out(i); i++) { |
| 2543 | Node* u = mem->out(i); |
| 2544 | if (u->_idx < last && u->is_Load() && _phase->C->get_alias_index(u->adr_type()) == alias) { |
| 2545 | Node* m = find_mem(_phase->get_ctrl(u), u); |
| 2546 | if (m != mem) { |
| 2547 | DEBUG_ONLY(if (trace) { tty->print("ZZZ setting memory of use"); u->dump(); })if (trace) { tty->print("ZZZ setting memory of use"); u-> dump(); }; |
| 2548 | _phase->igvn().replace_input_of(u, MemNode::Memory, m); |
| 2549 | --i; |
| 2550 | } |
| 2551 | } |
| 2552 | } |
| 2553 | for (DUIterator i = mem->outs(); mem->has_out(i); i++) { |
| 2554 | Node* u = mem->out(i); |
| 2555 | if (u->_idx < last) { |
| 2556 | if (u->is_Mem()) { |
| 2557 | if (_phase->C->get_alias_index(u->adr_type()) == alias) { |
| 2558 | Node* m = find_mem(_phase->get_ctrl(u), u); |
| 2559 | if (m != mem) { |
| 2560 | DEBUG_ONLY(if (trace) { tty->print("ZZZ setting memory of use"); u->dump(); })if (trace) { tty->print("ZZZ setting memory of use"); u-> dump(); }; |
| 2561 | _phase->igvn().replace_input_of(u, MemNode::Memory, m); |
| 2562 | --i; |
| 2563 | } |
| 2564 | } |
| 2565 | } else if (u->is_MergeMem()) { |
| 2566 | MergeMemNode* u_mm = u->as_MergeMem(); |
| 2567 | if (u_mm->memory_at(alias) == mem) { |
| 2568 | MergeMemNode* newmm = NULL__null; |
| 2569 | for (DUIterator_Fast jmax, j = u->fast_outs(jmax); j < jmax; j++) { |
| 2570 | Node* uu = u->fast_out(j); |
| 2571 | assert(!uu->is_MergeMem(), "chain of MergeMems?")do { if (!(!uu->is_MergeMem())) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2571, "assert(" "!uu->is_MergeMem()" ") failed", "chain of MergeMems?" ); ::breakpoint(); } } while (0); |
| 2572 | if (uu->is_Phi()) { |
| 2573 | assert(uu->adr_type() == TypePtr::BOTTOM, "")do { if (!(uu->adr_type() == TypePtr::BOTTOM)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2573, "assert(" "uu->adr_type() == TypePtr::BOTTOM" ") failed" , ""); ::breakpoint(); } } while (0); |
| 2574 | Node* region = uu->in(0); |
| 2575 | int nb = 0; |
| 2576 | for (uint k = 1; k < uu->req(); k++) { |
| 2577 | if (uu->in(k) == u) { |
| 2578 | Node* m = find_mem(region->in(k), NULL__null); |
| 2579 | if (m != mem) { |
| 2580 | DEBUG_ONLY(if (trace) { tty->print("ZZZ setting memory of phi %d", k); uu->dump(); })if (trace) { tty->print("ZZZ setting memory of phi %d", k) ; uu->dump(); }; |
| 2581 | newmm = clone_merge_mem(u, mem, m, _phase->ctrl_or_self(m), i); |
| 2582 | if (newmm != u) { |
| 2583 | _phase->igvn().replace_input_of(uu, k, newmm); |
| 2584 | nb++; |
| 2585 | --jmax; |
| 2586 | } |
| 2587 | } |
| 2588 | } |
| 2589 | } |
| 2590 | if (nb > 0) { |
| 2591 | --j; |
| 2592 | } |
| 2593 | } else { |
| 2594 | Node* m = find_mem(_phase->ctrl_or_self(uu), uu); |
| 2595 | if (m != mem) { |
| 2596 | DEBUG_ONLY(if (trace) { tty->print("ZZZ setting memory of use"); uu->dump(); })if (trace) { tty->print("ZZZ setting memory of use"); uu-> dump(); }; |
| 2597 | newmm = clone_merge_mem(u, mem, m, _phase->ctrl_or_self(m), i); |
| 2598 | if (newmm != u) { |
| 2599 | _phase->igvn().replace_input_of(uu, uu->find_edge(u), newmm); |
| 2600 | --j, --jmax; |
| 2601 | } |
| 2602 | } |
| 2603 | } |
| 2604 | } |
| 2605 | } |
| 2606 | } else if (u->is_Phi()) { |
| 2607 | assert(u->bottom_type() == Type::MEMORY, "what else?")do { if (!(u->bottom_type() == Type::MEMORY)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2607, "assert(" "u->bottom_type() == Type::MEMORY" ") failed" , "what else?"); ::breakpoint(); } } while (0); |
| 2608 | if (_phase->C->get_alias_index(u->adr_type()) == alias || u->adr_type() == TypePtr::BOTTOM) { |
| 2609 | Node* region = u->in(0); |
| 2610 | bool replaced = false; |
| 2611 | for (uint j = 1; j < u->req(); j++) { |
| 2612 | if (u->in(j) == mem) { |
| 2613 | Node* m = find_mem(region->in(j), NULL__null); |
| 2614 | Node* nnew = m; |
| 2615 | if (m != mem) { |
| 2616 | if (u->adr_type() == TypePtr::BOTTOM) { |
| 2617 | mm = allocate_merge_mem(mem, m, _phase->ctrl_or_self(m)); |
| 2618 | nnew = mm; |
| 2619 | } |
| 2620 | DEBUG_ONLY(if (trace) { tty->print("ZZZ setting memory of phi %d", j); u->dump(); })if (trace) { tty->print("ZZZ setting memory of phi %d", j) ; u->dump(); }; |
| 2621 | _phase->igvn().replace_input_of(u, j, nnew); |
| 2622 | replaced = true; |
| 2623 | } |
| 2624 | } |
| 2625 | } |
| 2626 | if (replaced) { |
| 2627 | --i; |
| 2628 | } |
| 2629 | } |
| 2630 | } else if ((u->adr_type() == TypePtr::BOTTOM && u->Opcode() != Op_StrInflatedCopy) || |
| 2631 | u->adr_type() == NULL__null) { |
| 2632 | assert(u->adr_type() != NULL ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava ()->uncommon_trap_request() != 0) || (u->is_CallStaticJava () && u->as_CallStaticJava()->_entry_point == OptoRuntime ::rethrow_stub()) || u->Opcode() == Op_CallLeaf)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2638, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", ""); ::breakpoint(); } } while (0) |
| 2633 | u->Opcode() == Op_Rethrow ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava ()->uncommon_trap_request() != 0) || (u->is_CallStaticJava () && u->as_CallStaticJava()->_entry_point == OptoRuntime ::rethrow_stub()) || u->Opcode() == Op_CallLeaf)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2638, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", ""); ::breakpoint(); } } while (0) |
| 2634 | u->Opcode() == Op_Return ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava ()->uncommon_trap_request() != 0) || (u->is_CallStaticJava () && u->as_CallStaticJava()->_entry_point == OptoRuntime ::rethrow_stub()) || u->Opcode() == Op_CallLeaf)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2638, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", ""); ::breakpoint(); } } while (0) |
| 2635 | u->Opcode() == Op_SafePoint ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava ()->uncommon_trap_request() != 0) || (u->is_CallStaticJava () && u->as_CallStaticJava()->_entry_point == OptoRuntime ::rethrow_stub()) || u->Opcode() == Op_CallLeaf)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2638, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", ""); ::breakpoint(); } } while (0) |
| 2636 | (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava ()->uncommon_trap_request() != 0) || (u->is_CallStaticJava () && u->as_CallStaticJava()->_entry_point == OptoRuntime ::rethrow_stub()) || u->Opcode() == Op_CallLeaf)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2638, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", ""); ::breakpoint(); } } while (0) |
| 2637 | (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava ()->uncommon_trap_request() != 0) || (u->is_CallStaticJava () && u->as_CallStaticJava()->_entry_point == OptoRuntime ::rethrow_stub()) || u->Opcode() == Op_CallLeaf)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2638, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", ""); ::breakpoint(); } } while (0) |
| 2638 | u->Opcode() == Op_CallLeaf, "")do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava ()->uncommon_trap_request() != 0) || (u->is_CallStaticJava () && u->as_CallStaticJava()->_entry_point == OptoRuntime ::rethrow_stub()) || u->Opcode() == Op_CallLeaf)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2638, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", ""); ::breakpoint(); } } while (0); |
| 2639 | Node* m = find_mem(_phase->ctrl_or_self(u), u); |
| 2640 | if (m != mem) { |
| 2641 | mm = allocate_merge_mem(mem, m, _phase->get_ctrl(m)); |
| 2642 | _phase->igvn().replace_input_of(u, u->find_edge(mem), mm); |
| 2643 | --i; |
| 2644 | } |
| 2645 | } else if (_phase->C->get_alias_index(u->adr_type()) == alias) { |
| 2646 | Node* m = find_mem(_phase->ctrl_or_self(u), u); |
| 2647 | if (m != mem) { |
| 2648 | DEBUG_ONLY(if (trace) { tty->print("ZZZ setting memory of use"); u->dump(); })if (trace) { tty->print("ZZZ setting memory of use"); u-> dump(); }; |
| 2649 | _phase->igvn().replace_input_of(u, u->find_edge(mem), m); |
| 2650 | --i; |
| 2651 | } |
| 2652 | } else if (u->adr_type() != TypePtr::BOTTOM && |
| 2653 | _memory_nodes[_phase->ctrl_or_self(u)->_idx] == u) { |
| 2654 | Node* m = find_mem(_phase->ctrl_or_self(u), u); |
| 2655 | assert(m != mem, "")do { if (!(m != mem)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2655, "assert(" "m != mem" ") failed", ""); ::breakpoint(); } } while (0); |
| 2656 | // u is on the wrong slice... |
| 2657 | assert(u->is_ClearArray(), "")do { if (!(u->is_ClearArray())) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2657, "assert(" "u->is_ClearArray()" ") failed", ""); :: breakpoint(); } } while (0); |
| 2658 | DEBUG_ONLY(if (trace) { tty->print("ZZZ setting memory of use"); u->dump(); })if (trace) { tty->print("ZZZ setting memory of use"); u-> dump(); }; |
| 2659 | _phase->igvn().replace_input_of(u, u->find_edge(mem), m); |
| 2660 | --i; |
| 2661 | } |
| 2662 | } |
| 2663 | } |
| 2664 | #ifdef ASSERT1 |
| 2665 | assert(new_mem->outcnt() > 0, "")do { if (!(new_mem->outcnt() > 0)) { (*g_assert_poison) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2665, "assert(" "new_mem->outcnt() > 0" ") failed", "" ); ::breakpoint(); } } while (0); |
| 2666 | for (int i = 0; i < phis.length(); i++) { |
| 2667 | Node* n = phis.at(i); |
| 2668 | assert(n->outcnt() > 0, "new phi must have uses now")do { if (!(n->outcnt() > 0)) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2668, "assert(" "n->outcnt() > 0" ") failed", "new phi must have uses now" ); ::breakpoint(); } } while (0); |
| 2669 | } |
| 2670 | #endif |
| 2671 | } |
| 2672 | |
| 2673 | MergeMemNode* MemoryGraphFixer::allocate_merge_mem(Node* mem, Node* rep_proj, Node* rep_ctrl) const { |
| 2674 | MergeMemNode* mm = MergeMemNode::make(mem); |
| 2675 | mm->set_memory_at(_alias, rep_proj); |
| 2676 | _phase->register_new_node(mm, rep_ctrl); |
| 2677 | return mm; |
| 2678 | } |
| 2679 | |
| 2680 | MergeMemNode* MemoryGraphFixer::clone_merge_mem(Node* u, Node* mem, Node* rep_proj, Node* rep_ctrl, DUIterator& i) const { |
| 2681 | MergeMemNode* newmm = NULL__null; |
| 2682 | MergeMemNode* u_mm = u->as_MergeMem(); |
| 2683 | Node* c = _phase->get_ctrl(u); |
| 2684 | if (_phase->is_dominator(c, rep_ctrl)) { |
| 2685 | c = rep_ctrl; |
| 2686 | } else { |
| 2687 | assert(_phase->is_dominator(rep_ctrl, c), "one must dominate the other")do { if (!(_phase->is_dominator(rep_ctrl, c))) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2687, "assert(" "_phase->is_dominator(rep_ctrl, c)" ") failed" , "one must dominate the other"); ::breakpoint(); } } while ( 0); |
| 2688 | } |
| 2689 | if (u->outcnt() == 1) { |
| 2690 | if (u->req() > (uint)_alias && u->in(_alias) == mem) { |
| 2691 | _phase->igvn().replace_input_of(u, _alias, rep_proj); |
| 2692 | --i; |
| 2693 | } else { |
| 2694 | _phase->igvn().rehash_node_delayed(u); |
| 2695 | u_mm->set_memory_at(_alias, rep_proj); |
| 2696 | } |
| 2697 | newmm = u_mm; |
| 2698 | _phase->set_ctrl_and_loop(u, c); |
| 2699 | } else { |
| 2700 | // can't simply clone u and then change one of its input because |
| 2701 | // it adds and then removes an edge which messes with the |
| 2702 | // DUIterator |
| 2703 | newmm = MergeMemNode::make(u_mm->base_memory()); |
| 2704 | for (uint j = 0; j < u->req(); j++) { |
| 2705 | if (j < newmm->req()) { |
| 2706 | if (j == (uint)_alias) { |
| 2707 | newmm->set_req(j, rep_proj); |
| 2708 | } else if (newmm->in(j) != u->in(j)) { |
| 2709 | newmm->set_req(j, u->in(j)); |
| 2710 | } |
| 2711 | } else if (j == (uint)_alias) { |
| 2712 | newmm->add_req(rep_proj); |
| 2713 | } else { |
| 2714 | newmm->add_req(u->in(j)); |
| 2715 | } |
| 2716 | } |
| 2717 | if ((uint)_alias >= u->req()) { |
| 2718 | newmm->set_memory_at(_alias, rep_proj); |
| 2719 | } |
| 2720 | _phase->register_new_node(newmm, c); |
| 2721 | } |
| 2722 | return newmm; |
| 2723 | } |
| 2724 | |
| 2725 | bool MemoryGraphFixer::should_process_phi(Node* phi) const { |
| 2726 | if (phi->adr_type() == TypePtr::BOTTOM) { |
| 2727 | Node* region = phi->in(0); |
| 2728 | for (DUIterator_Fast jmax, j = region->fast_outs(jmax); j < jmax; j++) { |
| 2729 | Node* uu = region->fast_out(j); |
| 2730 | if (uu->is_Phi() && uu != phi && uu->bottom_type() == Type::MEMORY && _phase->C->get_alias_index(uu->adr_type()) == _alias) { |
| 2731 | return false; |
| 2732 | } |
| 2733 | } |
| 2734 | return true; |
| 2735 | } |
| 2736 | return _phase->C->get_alias_index(phi->adr_type()) == _alias; |
| 2737 | } |
| 2738 | |
| 2739 | void MemoryGraphFixer::fix_memory_uses(Node* mem, Node* replacement, Node* rep_proj, Node* rep_ctrl) const { |
| 2740 | uint last = _phase-> C->unique(); |
| 2741 | MergeMemNode* mm = NULL__null; |
| 2742 | assert(mem->bottom_type() == Type::MEMORY, "")do { if (!(mem->bottom_type() == Type::MEMORY)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2742, "assert(" "mem->bottom_type() == Type::MEMORY" ") failed" , ""); ::breakpoint(); } } while (0); |
| 2743 | for (DUIterator i = mem->outs(); mem->has_out(i); i++) { |
| 2744 | Node* u = mem->out(i); |
| 2745 | if (u != replacement && u->_idx < last) { |
| 2746 | if (u->is_MergeMem()) { |
| 2747 | MergeMemNode* u_mm = u->as_MergeMem(); |
| 2748 | if (u_mm->memory_at(_alias) == mem) { |
| 2749 | MergeMemNode* newmm = NULL__null; |
| 2750 | for (DUIterator_Fast jmax, j = u->fast_outs(jmax); j < jmax; j++) { |
| 2751 | Node* uu = u->fast_out(j); |
| 2752 | assert(!uu->is_MergeMem(), "chain of MergeMems?")do { if (!(!uu->is_MergeMem())) { (*g_assert_poison) = 'X' ;; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2752, "assert(" "!uu->is_MergeMem()" ") failed", "chain of MergeMems?" ); ::breakpoint(); } } while (0); |
| 2753 | if (uu->is_Phi()) { |
| 2754 | if (should_process_phi(uu)) { |
| 2755 | Node* region = uu->in(0); |
| 2756 | int nb = 0; |
| 2757 | for (uint k = 1; k < uu->req(); k++) { |
| 2758 | if (uu->in(k) == u && _phase->is_dominator(rep_ctrl, region->in(k))) { |
| 2759 | if (newmm == NULL__null) { |
| 2760 | newmm = clone_merge_mem(u, mem, rep_proj, rep_ctrl, i); |
| 2761 | } |
| 2762 | if (newmm != u) { |
| 2763 | _phase->igvn().replace_input_of(uu, k, newmm); |
| 2764 | nb++; |
| 2765 | --jmax; |
| 2766 | } |
| 2767 | } |
| 2768 | } |
| 2769 | if (nb > 0) { |
| 2770 | --j; |
| 2771 | } |
| 2772 | } |
| 2773 | } else { |
| 2774 | if (rep_ctrl != uu && ShenandoahBarrierC2Support::is_dominator(rep_ctrl, _phase->ctrl_or_self(uu), replacement, uu, _phase)) { |
| 2775 | if (newmm == NULL__null) { |
| 2776 | newmm = clone_merge_mem(u, mem, rep_proj, rep_ctrl, i); |
| 2777 | } |
| 2778 | if (newmm != u) { |
| 2779 | _phase->igvn().replace_input_of(uu, uu->find_edge(u), newmm); |
| 2780 | --j, --jmax; |
| 2781 | } |
| 2782 | } |
| 2783 | } |
| 2784 | } |
| 2785 | } |
| 2786 | } else if (u->is_Phi()) { |
| 2787 | assert(u->bottom_type() == Type::MEMORY, "what else?")do { if (!(u->bottom_type() == Type::MEMORY)) { (*g_assert_poison ) = 'X';; report_vm_error("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2787, "assert(" "u->bottom_type() == Type::MEMORY" ") failed" , "what else?"); ::breakpoint(); } } while (0); |
| 2788 | Node* region = u->in(0); |
| 2789 | if (should_process_phi(u)) { |
| 2790 | bool replaced = false; |
| 2791 | for (uint j = 1; j < u->req(); j++) { |
| 2792 | if (u->in(j) == mem && _phase->is_dominator(rep_ctrl, region->in(j))) { |
| 2793 | Node* nnew = rep_proj; |
| 2794 | if (u->adr_type() == TypePtr::BOTTOM) { |
| 2795 | if (mm == NULL__null) { |
| 2796 | mm = allocate_merge_mem(mem, rep_proj, rep_ctrl); |
| 2797 | } |
| 2798 | nnew = mm; |
| 2799 | } |
| 2800 | _phase->igvn().replace_input_of(u, j, nnew); |
| 2801 | replaced = true; |
| 2802 | } |
| 2803 | } |
| 2804 | if (replaced) { |
| 2805 | --i; |
| 2806 | } |
| 2807 | |
| 2808 | } |
| 2809 | } else if ((u->adr_type() == TypePtr::BOTTOM && u->Opcode() != Op_StrInflatedCopy) || |
| 2810 | u->adr_type() == NULL__null) { |
| 2811 | assert(u->adr_type() != NULL ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava ()->_entry_point == OptoRuntime::rethrow_stub()) || u-> Opcode() == Op_CallLeaf)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2819, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", "%s", u->Name()); ::breakpoint(); } } while ( 0) |
| 2812 | u->Opcode() == Op_Rethrow ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava ()->_entry_point == OptoRuntime::rethrow_stub()) || u-> Opcode() == Op_CallLeaf)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2819, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", "%s", u->Name()); ::breakpoint(); } } while ( 0) |
| 2813 | u->Opcode() == Op_Return ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava ()->_entry_point == OptoRuntime::rethrow_stub()) || u-> Opcode() == Op_CallLeaf)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2819, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", "%s", u->Name()); ::breakpoint(); } } while ( 0) |
| 2814 | u->Opcode() == Op_SafePoint ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava ()->_entry_point == OptoRuntime::rethrow_stub()) || u-> Opcode() == Op_CallLeaf)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2819, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", "%s", u->Name()); ::breakpoint(); } } while ( 0) |
| 2815 | u->Opcode() == Op_StoreIConditional ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava ()->_entry_point == OptoRuntime::rethrow_stub()) || u-> Opcode() == Op_CallLeaf)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2819, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", "%s", u->Name()); ::breakpoint(); } } while ( 0) |
| 2816 | u->Opcode() == Op_StoreLConditional ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava ()->_entry_point == OptoRuntime::rethrow_stub()) || u-> Opcode() == Op_CallLeaf)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2819, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", "%s", u->Name()); ::breakpoint(); } } while ( 0) |
| 2817 | (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava ()->_entry_point == OptoRuntime::rethrow_stub()) || u-> Opcode() == Op_CallLeaf)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2819, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", "%s", u->Name()); ::breakpoint(); } } while ( 0) |
| 2818 | (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) ||do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava ()->_entry_point == OptoRuntime::rethrow_stub()) || u-> Opcode() == Op_CallLeaf)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2819, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", "%s", u->Name()); ::breakpoint(); } } while ( 0) |
| 2819 | u->Opcode() == Op_CallLeaf, "%s", u->Name())do { if (!(u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava ()->_entry_point == OptoRuntime::rethrow_stub()) || u-> Opcode() == Op_CallLeaf)) { (*g_assert_poison) = 'X';; report_vm_error ("/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2819, "assert(" "u->adr_type() != __null || u->Opcode() == Op_Rethrow || u->Opcode() == Op_Return || u->Opcode() == Op_SafePoint || u->Opcode() == Op_StoreIConditional || u->Opcode() == Op_StoreLConditional || (u->is_CallStaticJava() && u->as_CallStaticJava()->uncommon_trap_request() != 0) || (u->is_CallStaticJava() && u->as_CallStaticJava()->_entry_point == OptoRuntime::rethrow_stub()) || u->Opcode() == Op_CallLeaf" ") failed", "%s", u->Name()); ::breakpoint(); } } while ( 0); |
| 2820 | if (ShenandoahBarrierC2Support::is_dominator(rep_ctrl, _phase->ctrl_or_self(u), replacement, u, _phase)) { |
| 2821 | if (mm == NULL__null) { |
| 2822 | mm = allocate_merge_mem(mem, rep_proj, rep_ctrl); |
| 2823 | } |
| 2824 | _phase->igvn().replace_input_of(u, u->find_edge(mem), mm); |
| 2825 | --i; |
| 2826 | } |
| 2827 | } else if (_phase->C->get_alias_index(u->adr_type()) == _alias) { |
| 2828 | if (ShenandoahBarrierC2Support::is_dominator(rep_ctrl, _phase->ctrl_or_self(u), replacement, u, _phase)) { |
| 2829 | _phase->igvn().replace_input_of(u, u->find_edge(mem), rep_proj); |
| 2830 | --i; |
| 2831 | } |
| 2832 | } |
| 2833 | } |
| 2834 | } |
| 2835 | } |
| 2836 | |
| 2837 | ShenandoahLoadReferenceBarrierNode::ShenandoahLoadReferenceBarrierNode(Node* ctrl, Node* obj, DecoratorSet decorators) |
| 2838 | : Node(ctrl, obj), _decorators(decorators) { |
| 2839 | ShenandoahBarrierSetC2::bsc2()->state()->add_load_reference_barrier(this); |
| 2840 | } |
| 2841 | |
| 2842 | DecoratorSet ShenandoahLoadReferenceBarrierNode::decorators() const { |
| 2843 | return _decorators; |
| 2844 | } |
| 2845 | |
| 2846 | uint ShenandoahLoadReferenceBarrierNode::size_of() const { |
| 2847 | return sizeof(*this); |
| 2848 | } |
| 2849 | |
| 2850 | static DecoratorSet mask_decorators(DecoratorSet decorators) { |
| 2851 | return decorators & (ON_STRONG_OOP_REF | ON_WEAK_OOP_REF | ON_PHANTOM_OOP_REF | ON_UNKNOWN_OOP_REF | IN_NATIVE); |
| 2852 | } |
| 2853 | |
| 2854 | uint ShenandoahLoadReferenceBarrierNode::hash() const { |
| 2855 | uint hash = Node::hash(); |
| 2856 | hash += mask_decorators(_decorators); |
| 2857 | return hash; |
| 2858 | } |
| 2859 | |
| 2860 | bool ShenandoahLoadReferenceBarrierNode::cmp( const Node &n ) const { |
| 2861 | return Node::cmp(n) && n.Opcode() == Op_ShenandoahLoadReferenceBarrier && |
| 2862 | mask_decorators(_decorators) == mask_decorators(((const ShenandoahLoadReferenceBarrierNode&)n)._decorators); |
| 2863 | } |
| 2864 | |
| 2865 | const Type* ShenandoahLoadReferenceBarrierNode::bottom_type() const { |
| 2866 | if (in(ValueIn) == NULL__null || in(ValueIn)->is_top()) { |
| 2867 | return Type::TOP; |
| 2868 | } |
| 2869 | const Type* t = in(ValueIn)->bottom_type(); |
| 2870 | if (t == TypePtr::NULL_PTR) { |
| 2871 | return t; |
| 2872 | } |
| 2873 | |
| 2874 | if (ShenandoahBarrierSet::is_strong_access(decorators())) { |
| 2875 | return t; |
| 2876 | } |
| 2877 | |
| 2878 | return t->meet(TypePtr::NULL_PTR); |
| 2879 | } |
| 2880 | |
| 2881 | const Type* ShenandoahLoadReferenceBarrierNode::Value(PhaseGVN* phase) const { |
| 2882 | // Either input is TOP ==> the result is TOP |
| 2883 | const Type *t2 = phase->type(in(ValueIn)); |
| 2884 | if( t2 == Type::TOP ) return Type::TOP; |
| 2885 | |
| 2886 | if (t2 == TypePtr::NULL_PTR) { |
| 2887 | return t2; |
| 2888 | } |
| 2889 | |
| 2890 | if (ShenandoahBarrierSet::is_strong_access(decorators())) { |
| 2891 | return t2; |
| 2892 | } |
| 2893 | |
| 2894 | return t2->meet(TypePtr::NULL_PTR); |
| 2895 | } |
| 2896 | |
| 2897 | Node* ShenandoahLoadReferenceBarrierNode::Identity(PhaseGVN* phase) { |
| 2898 | Node* value = in(ValueIn); |
| 2899 | if (!needs_barrier(phase, value)) { |
| 2900 | return value; |
| 2901 | } |
| 2902 | return this; |
| 2903 | } |
| 2904 | |
| 2905 | bool ShenandoahLoadReferenceBarrierNode::needs_barrier(PhaseGVN* phase, Node* n) { |
| 2906 | Unique_Node_List visited; |
| 2907 | return needs_barrier_impl(phase, n, visited); |
| 2908 | } |
| 2909 | |
| 2910 | bool ShenandoahLoadReferenceBarrierNode::needs_barrier_impl(PhaseGVN* phase, Node* n, Unique_Node_List &visited) { |
| 2911 | if (n == NULL__null) return false; |
| 2912 | if (visited.member(n)) { |
| 2913 | return false; // Been there. |
| 2914 | } |
| 2915 | visited.push(n); |
| 2916 | |
| 2917 | if (n->is_Allocate()) { |
| 2918 | // tty->print_cr("optimize barrier on alloc"); |
| 2919 | return false; |
| 2920 | } |
| 2921 | if (n->is_Call()) { |
| 2922 | // tty->print_cr("optimize barrier on call"); |
| 2923 | return false; |
| 2924 | } |
| 2925 | |
| 2926 | const Type* type = phase->type(n); |
| 2927 | if (type == Type::TOP) { |
| 2928 | return false; |
| 2929 | } |
| 2930 | if (type->make_ptr()->higher_equal(TypePtr::NULL_PTR)) { |
| 2931 | // tty->print_cr("optimize barrier on null"); |
| 2932 | return false; |
| 2933 | } |
| 2934 | if (type->make_oopptr() && type->make_oopptr()->const_oop() != NULL__null) { |
| 2935 | // tty->print_cr("optimize barrier on constant"); |
| 2936 | return false; |
| 2937 | } |
| 2938 | |
| 2939 | switch (n->Opcode()) { |
| 2940 | case Op_AddP: |
| 2941 | return true; // TODO: Can refine? |
| 2942 | case Op_LoadP: |
| 2943 | case Op_ShenandoahCompareAndExchangeN: |
| 2944 | case Op_ShenandoahCompareAndExchangeP: |
| 2945 | case Op_CompareAndExchangeN: |
| 2946 | case Op_CompareAndExchangeP: |
| 2947 | case Op_GetAndSetN: |
| 2948 | case Op_GetAndSetP: |
| 2949 | return true; |
| 2950 | case Op_Phi: { |
| 2951 | for (uint i = 1; i < n->req(); i++) { |
| 2952 | if (needs_barrier_impl(phase, n->in(i), visited)) return true; |
| 2953 | } |
| 2954 | return false; |
| 2955 | } |
| 2956 | case Op_CheckCastPP: |
| 2957 | case Op_CastPP: |
| 2958 | return needs_barrier_impl(phase, n->in(1), visited); |
| 2959 | case Op_Proj: |
| 2960 | return needs_barrier_impl(phase, n->in(0), visited); |
| 2961 | case Op_ShenandoahLoadReferenceBarrier: |
| 2962 | // tty->print_cr("optimize barrier on barrier"); |
| 2963 | return false; |
| 2964 | case Op_Parm: |
| 2965 | // tty->print_cr("optimize barrier on input arg"); |
| 2966 | return false; |
| 2967 | case Op_DecodeN: |
| 2968 | case Op_EncodeP: |
| 2969 | return needs_barrier_impl(phase, n->in(1), visited); |
| 2970 | case Op_LoadN: |
| 2971 | return true; |
| 2972 | case Op_CMoveN: |
| 2973 | case Op_CMoveP: |
| 2974 | return needs_barrier_impl(phase, n->in(2), visited) || |
| 2975 | needs_barrier_impl(phase, n->in(3), visited); |
| 2976 | case Op_ShenandoahIUBarrier: |
| 2977 | return needs_barrier_impl(phase, n->in(1), visited); |
| 2978 | case Op_CreateEx: |
| 2979 | return false; |
| 2980 | default: |
| 2981 | break; |
| 2982 | } |
| 2983 | #ifdef ASSERT1 |
| 2984 | tty->print("need barrier on?: "); |
| 2985 | tty->print_cr("ins:"); |
| 2986 | n->dump(2); |
| 2987 | tty->print_cr("outs:"); |
| 2988 | n->dump(-2); |
| 2989 | ShouldNotReachHere()do { (*g_assert_poison) = 'X';; report_should_not_reach_here( "/home/daniel/Projects/java/jdk/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp" , 2989); ::breakpoint(); } while (0); |
| 2990 | #endif |
| 2991 | return true; |
| 2992 | } |