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Side by Side Diff: runtime/vm/deopt_instructions.cc

Issue 2098573004: DBC: CheckClassInstr (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: Address comments Created 4 years, 5 months ago
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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 #include "vm/deopt_instructions.h" 5 #include "vm/deopt_instructions.h"
6 6
7 #include "vm/assembler.h" 7 #include "vm/assembler.h"
8 #include "vm/code_patcher.h" 8 #include "vm/code_patcher.h"
9 #include "vm/compiler.h" 9 #include "vm/compiler.h"
10 #include "vm/intermediate_language.h" 10 #include "vm/intermediate_language.h"
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685 void Execute(DeoptContext* deopt_context, intptr_t* dest_addr) { 685 void Execute(DeoptContext* deopt_context, intptr_t* dest_addr) {
686 Function& function = Function::Handle(deopt_context->zone()); 686 Function& function = Function::Handle(deopt_context->zone());
687 function ^= deopt_context->ObjectAt(object_table_index_); 687 function ^= deopt_context->ObjectAt(object_table_index_);
688 if (function.IsNull()) { 688 if (function.IsNull()) {
689 *reinterpret_cast<RawObject**>(dest_addr) = deopt_context->is_lazy_deopt() 689 *reinterpret_cast<RawObject**>(dest_addr) = deopt_context->is_lazy_deopt()
690 ? StubCode::DeoptimizeLazy_entry()->code() 690 ? StubCode::DeoptimizeLazy_entry()->code()
691 : StubCode::Deoptimize_entry()->code(); 691 : StubCode::Deoptimize_entry()->code();
692 return; 692 return;
693 } 693 }
694 694
695 #if !defined(TARGET_ARCH_DBC)
696 // We don't always have the Code object for the frame's corresponding 695 // We don't always have the Code object for the frame's corresponding
697 // unoptimized code as it may have been collected. Use a stub as the pc 696 // unoptimized code as it may have been collected. Use a stub as the pc
698 // marker until we can recreate that Code object during deferred 697 // marker until we can recreate that Code object during deferred
699 // materialization to maintain the invariant that Dart frames always have 698 // materialization to maintain the invariant that Dart frames always have
700 // a pc marker. 699 // a pc marker.
701 *reinterpret_cast<RawObject**>(dest_addr) = 700 *reinterpret_cast<RawObject**>(dest_addr) =
702 StubCode::FrameAwaitingMaterialization_entry()->code(); 701 StubCode::FrameAwaitingMaterialization_entry()->code();
703 #endif
704 deopt_context->DeferPcMarkerMaterialization(object_table_index_, dest_addr); 702 deopt_context->DeferPcMarkerMaterialization(object_table_index_, dest_addr);
705 } 703 }
706 704
707 private: 705 private:
708 intptr_t object_table_index_; 706 intptr_t object_table_index_;
709 707
710 DISALLOW_COPY_AND_ASSIGN(DeoptPcMarkerInstr); 708 DISALLOW_COPY_AND_ASSIGN(DeoptPcMarkerInstr);
711 }; 709 };
712 710
713 711
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1342 Smi* offset, 1340 Smi* offset,
1343 TypedData* info, 1341 TypedData* info,
1344 Smi* reason) { 1342 Smi* reason) {
1345 intptr_t i = index * kEntrySize; 1343 intptr_t i = index * kEntrySize;
1346 *offset ^= table.At(i); 1344 *offset ^= table.At(i);
1347 *info ^= table.At(i + 1); 1345 *info ^= table.At(i + 1);
1348 *reason ^= table.At(i + 2); 1346 *reason ^= table.At(i + 2);
1349 } 1347 }
1350 1348
1351 } // namespace dart 1349 } // namespace dart
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