BackEdgeTable Class Reference

#include <full-codegen.h>

Public Types
enum	BackEdgeState { INTERRUPT, ON_STACK_REPLACEMENT, OSR_AFTER_STACK_CHECK }

Public Member Functions
	BackEdgeTable (Code *code, DisallowHeapAllocation *required)
uint32_t	length ()
BailoutId	ast_id (uint32_t index)
uint32_t	loop_depth (uint32_t index)
uint32_t	pc_offset (uint32_t index)
Address	pc (uint32_t index)

Static Public Member Functions
static void	Patch (Isolate *isolate, Code *unoptimized_code)
static void	PatchAt (Code *unoptimized_code, Address pc, BackEdgeState target_state, Code *replacement_code)
static void	Revert (Isolate *isolate, Code *unoptimized_code)
static void	AddStackCheck (Handle< Code > code, uint32_t pc_offset)
static void	RemoveStackCheck (Handle< Code > code, uint32_t pc_offset)
static BackEdgeState	GetBackEdgeState (Isolate *isolate, Code *unoptimized_code, Address pc_after)

Detailed Description

Definition at line 880 of file full-codegen.h.

Member Enumeration Documentation

enum BackEdgeState

Enumerator
INTERRUPT
ON_STACK_REPLACEMENT
OSR_AFTER_STACK_CHECK

Definition at line 909 of file full-codegen.h.

Constructor & Destructor Documentation

BackEdgeTable ( Code *  code, DisallowHeapAllocation *  required  )

inline

Definition at line 882 of file full-codegen.h.

References ASSERT, Code::back_edge_table_offset(), Code::instruction_start(), Code::kind(), and Memory::uint32_at().

Member Function Documentation

void AddStackCheck ( Handle< Code >  code, uint32_t  pc_offset  )

static

Definition at line 1694 of file full-codegen.cc.

References Builtins::builtin(), Isolate::builtins(), and v8::internal::pc.

Referenced by v8::internal::RUNTIME_FUNCTION().

BailoutId ast_id ( uint32_t  index )

inline

Definition at line 892 of file full-codegen.h.

References Memory::uint32_at().

Referenced by Code::TranslateAstIdToPcOffset(), and Code::TranslatePcOffsetToAstId().

static BackEdgeState GetBackEdgeState ( Isolate *  isolate, Code *  unoptimized_code, Address  pc_after  )

static

uint32_t length ( )

inline

Definition at line 890 of file full-codegen.h.

Referenced by BackEdgeTable::Patch(), BackEdgeTable::Revert(), Code::TranslateAstIdToPcOffset(), and Code::TranslatePcOffsetToAstId().

uint32_t loop_depth ( uint32_t  index )

inline

Definition at line 897 of file full-codegen.h.

References Memory::uint32_at().

Referenced by BackEdgeTable::Patch(), and BackEdgeTable::Revert().

void Patch ( Isolate *  isolate, Code *  unoptimized_code  )

static

Definition at line 1646 of file full-codegen.cc.

References Code::allow_osr_at_loop_nesting_level(), ASSERT, ASSERT_EQ, Builtins::builtin(), Isolate::builtins(), v8::internal::INTERRUPT, BackEdgeTable::length(), BackEdgeTable::loop_depth(), BackEdgeTable::pc(), and Code::set_back_edges_patched_for_osr().

Referenced by RuntimeProfiler::AttemptOnStackReplacement().

static void PatchAt ( Code *  unoptimized_code, Address  pc, BackEdgeState  target_state, Code *  replacement_code  )

static

Address pc ( uint32_t  index )

inline

Definition at line 905 of file full-codegen.h.

References BackEdgeTable::pc_offset().

Referenced by BackEdgeTable::Patch(), and BackEdgeTable::Revert().

uint32_t pc_offset ( uint32_t  index )

inline

Definition at line 901 of file full-codegen.h.

References Memory::uint32_at().

Referenced by BackEdgeTable::pc(), Code::TranslateAstIdToPcOffset(), and Code::TranslatePcOffsetToAstId().

void RemoveStackCheck ( Handle< Code >  code, uint32_t  pc_offset  )

static

Definition at line 1703 of file full-codegen.cc.

References Builtins::builtin(), Isolate::builtins(), and v8::internal::pc.

Referenced by OptimizingCompilerThread::InstallOptimizedFunctions().

void Revert ( Isolate *  isolate, Code *  unoptimized_code  )

static

Definition at line 1669 of file full-codegen.cc.

References Code::allow_osr_at_loop_nesting_level(), ASSERT, ASSERT_NE, Code::back_edges_patched_for_osr(), Builtins::builtin(), Isolate::builtins(), v8::internal::INTERRUPT, BackEdgeTable::length(), BackEdgeTable::loop_depth(), BackEdgeTable::pc(), Code::set_allow_osr_at_loop_nesting_level(), and Code::set_back_edges_patched_for_osr().

Referenced by v8::internal::RUNTIME_FUNCTION().

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The documentation for this class was generated from the following files:

• src/full-codegen.h
• src/full-codegen.cc