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Issue 782703002: Cleanup deoptimizer relocation slot preparation. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Comment for x87 port. Created 6 years ago
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1 1
2 // Copyright 2011 the V8 project authors. All rights reserved. 2 // Copyright 2011 the V8 project authors. All rights reserved.
3 // Use of this source code is governed by a BSD-style license that can be 3 // Use of this source code is governed by a BSD-style license that can be
4 // found in the LICENSE file. 4 // found in the LICENSE file.
5 5
6 #include "src/v8.h" 6 #include "src/v8.h"
7 7
8 #include "src/codegen.h" 8 #include "src/codegen.h"
9 #include "src/deoptimizer.h" 9 #include "src/deoptimizer.h"
10 #include "src/full-codegen.h" 10 #include "src/full-codegen.h"
11 #include "src/safepoint-table.h" 11 #include "src/safepoint-table.h"
12 12
13 namespace v8 { 13 namespace v8 {
14 namespace internal { 14 namespace internal {
15 15
16 16
17 int Deoptimizer::patch_size() { 17 int Deoptimizer::patch_size() {
18 const int kCallInstructionSizeInWords = 4; 18 const int kCallInstructionSizeInWords = 4;
19 return kCallInstructionSizeInWords * Assembler::kInstrSize; 19 return kCallInstructionSizeInWords * Assembler::kInstrSize;
20 } 20 }
21 21
22 22
23 void Deoptimizer::EnsureRelocSpaceForLazyDeoptimization(Handle<Code> code) {
24 // Empty because there is no need for relocation information for the code
25 // patching in Deoptimizer::PatchCodeForDeoptimization below.
26 }
27
28
23 void Deoptimizer::PatchCodeForDeoptimization(Isolate* isolate, Code* code) { 29 void Deoptimizer::PatchCodeForDeoptimization(Isolate* isolate, Code* code) {
24 Address code_start_address = code->instruction_start(); 30 Address code_start_address = code->instruction_start();
25 // Invalidate the relocation information, as it will become invalid by the 31 // Invalidate the relocation information, as it will become invalid by the
26 // code patching below, and is not needed any more. 32 // code patching below, and is not needed any more.
27 code->InvalidateRelocation(); 33 code->InvalidateRelocation();
28 34
29 if (FLAG_zap_code_space) { 35 if (FLAG_zap_code_space) {
30 // Fail hard and early if we enter this code object again. 36 // Fail hard and early if we enter this code object again.
31 byte* pointer = code->FindCodeAgeSequence(); 37 byte* pointer = code->FindCodeAgeSequence();
32 if (pointer != NULL) { 38 if (pointer != NULL) {
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392 void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) { 398 void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) {
393 // No out-of-line constant pool support. 399 // No out-of-line constant pool support.
394 UNREACHABLE(); 400 UNREACHABLE();
395 } 401 }
396 402
397 403
398 #undef __ 404 #undef __
399 405
400 406
401 } } // namespace v8::internal 407 } } // namespace v8::internal
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