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Issue 47023003: Avoid pre-aging when debugger is active (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Introduce IsCodePreAgingAcitve Created 7 years, 1 month ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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30 #if V8_TARGET_ARCH_X64 30 #if V8_TARGET_ARCH_X64
31 31
32 #include "bootstrapper.h" 32 #include "bootstrapper.h"
33 #include "codegen.h" 33 #include "codegen.h"
34 #include "cpu-profiler.h" 34 #include "cpu-profiler.h"
35 #include "assembler-x64.h" 35 #include "assembler-x64.h"
36 #include "macro-assembler-x64.h" 36 #include "macro-assembler-x64.h"
37 #include "serialize.h" 37 #include "serialize.h"
38 #include "debug.h" 38 #include "debug.h"
39 #include "heap.h" 39 #include "heap.h"
40 #include "isolate-inl.h"
40 41
41 namespace v8 { 42 namespace v8 {
42 namespace internal { 43 namespace internal {
43 44
44 MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size) 45 MacroAssembler::MacroAssembler(Isolate* arg_isolate, void* buffer, int size)
45 : Assembler(arg_isolate, buffer, size), 46 : Assembler(arg_isolate, buffer, size),
46 generating_stub_(false), 47 generating_stub_(false),
47 allow_stub_calls_(true), 48 allow_stub_calls_(true),
48 has_frame_(false), 49 has_frame_(false),
49 root_array_available_(true) { 50 root_array_available_(true) {
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3652 3653
3653 void MacroAssembler::Prologue(PrologueFrameMode frame_mode) { 3654 void MacroAssembler::Prologue(PrologueFrameMode frame_mode) {
3654 if (frame_mode == BUILD_STUB_FRAME) { 3655 if (frame_mode == BUILD_STUB_FRAME) {
3655 push(rbp); // Caller's frame pointer. 3656 push(rbp); // Caller's frame pointer.
3656 movq(rbp, rsp); 3657 movq(rbp, rsp);
3657 push(rsi); // Callee's context. 3658 push(rsi); // Callee's context.
3658 Push(Smi::FromInt(StackFrame::STUB)); 3659 Push(Smi::FromInt(StackFrame::STUB));
3659 } else { 3660 } else {
3660 PredictableCodeSizeScope predictible_code_size_scope(this, 3661 PredictableCodeSizeScope predictible_code_size_scope(this,
3661 kNoCodeAgeSequenceLength); 3662 kNoCodeAgeSequenceLength);
3662 if (FLAG_optimize_for_size && FLAG_age_code) { 3663 if (isolate()->IsCodePreAgingActive()) {
3663 // Pre-age the code. 3664 // Pre-age the code.
3664 Call(isolate()->builtins()->MarkCodeAsExecutedOnce(), 3665 Call(isolate()->builtins()->MarkCodeAsExecutedOnce(),
3665 RelocInfo::CODE_AGE_SEQUENCE); 3666 RelocInfo::CODE_AGE_SEQUENCE);
3666 Nop(kNoCodeAgeSequenceLength - Assembler::kShortCallInstructionLength); 3667 Nop(kNoCodeAgeSequenceLength - Assembler::kShortCallInstructionLength);
3667 } else { 3668 } else {
3668 push(rbp); // Caller's frame pointer. 3669 push(rbp); // Caller's frame pointer.
3669 movq(rbp, rsp); 3670 movq(rbp, rsp);
3670 push(rsi); // Callee's context. 3671 push(rsi); // Callee's context.
3671 push(rdi); // Callee's JS function. 3672 push(rdi); // Callee's JS function.
3672 } 3673 }
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4964 movq(arg_reg_1, isolate, RelocInfo::EXTERNAL_REFERENCE); 4965 movq(arg_reg_1, isolate, RelocInfo::EXTERNAL_REFERENCE);
4965 CallCFunction( 4966 CallCFunction(
4966 ExternalReference::record_object_allocation_function(isolate), 3); 4967 ExternalReference::record_object_allocation_function(isolate), 3);
4967 PopSafepointRegisters(); 4968 PopSafepointRegisters();
4968 } 4969 }
4969 4970
4970 4971
4971 } } // namespace v8::internal 4972 } } // namespace v8::internal
4972 4973
4973 #endif // V8_TARGET_ARCH_X64 4974 #endif // V8_TARGET_ARCH_X64
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