V8 Project
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v8::internal::compiler::BlockBuilder Class Reference

#include <control-builders.h>

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Public Member Functions

 BlockBuilder (StructuredGraphBuilder *builder)
 
void BeginBlock ()
 
void EndBlock ()
 
virtual void Break ()
 
- Public Member Functions inherited from v8::internal::compiler::ControlBuilder
 ControlBuilder (StructuredGraphBuilder *builder)
 
virtual ~ControlBuilder ()
 
virtual void Continue ()
 

Private Attributes

Environment * break_environment_
 

Additional Inherited Members

- Protected Types inherited from v8::internal::compiler::ControlBuilder
typedef StructuredGraphBuilder Builder
 
typedef StructuredGraphBuilder::Environment Environment
 
- Protected Member Functions inherited from v8::internal::compiler::ControlBuilder
Zone * zone () const
 
Environment * environment ()
 
void set_environment (Environment *env)
 
- Protected Attributes inherited from v8::internal::compiler::ControlBuilder
Builder * builder_
 

Detailed Description

Definition at line 125 of file control-builders.h.

Constructor & Destructor Documentation

◆ BlockBuilder()

v8::internal::compiler::BlockBuilder::BlockBuilder ( StructuredGraphBuilder *  builder)
inlineexplicit

Definition at line 127 of file control-builders.h.

128  : ControlBuilder(builder), break_environment_(NULL) {}
v8::internal::compiler::ControlBuilder::ControlBuilder
ControlBuilder(StructuredGraphBuilder *builder)
Definition: control-builders.h:23
NULL
enable harmony numeric enable harmony object literal extensions Optimize object Array DOM strings and string trace pretenuring decisions of HAllocate instructions Enables optimizations which favor memory size over execution speed maximum source size in bytes considered for a single inlining maximum cumulative number of AST nodes considered for inlining trace the tracking of allocation sites deoptimize every n garbage collections perform array bounds checks elimination analyze liveness of environment slots and zap dead values flushes the cache of optimized code for closures on every GC allow uint32 values on optimize frames if they are used only in safe operations track concurrent recompilation artificial compilation delay in ms do not emit check maps for constant values that have a leaf deoptimize the optimized code if the layout of the maps changes enable context specialization in TurboFan execution budget before interrupt is triggered max percentage of megamorphic generic ICs to allow optimization enable use of SAHF instruction if enable use of VFP3 instructions if available enable use of NEON instructions if enable use of SDIV and UDIV instructions if enable use of MLS instructions if enable loading bit constant by means of movw movt instruction enable unaligned accesses for enable use of d16 d31 registers on ARM this requires VFP3 force all emitted branches to be in long enable alignment of csp to bytes on platforms which prefer the register to always be NULL
Definition: flag-definitions.h:407

Member Function Documentation

◆ BeginBlock()

void v8::internal::compiler::BlockBuilder::BeginBlock ( )

Definition at line 127 of file control-builders.cc.

127  {
128  break_environment_ = environment()->CopyAsUnreachable();
129 }

References break_environment_, v8::internal::compiler::StructuredGraphBuilder::Environment::CopyAsUnreachable(), and v8::internal::compiler::ControlBuilder::environment().

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◆ Break()

void v8::internal::compiler::BlockBuilder::Break ( )
virtual

Reimplemented from v8::internal::compiler::ControlBuilder.

Definition at line 132 of file control-builders.cc.

132  {
133  break_environment_->Merge(environment());
134  environment()->MarkAsUnreachable();
135 }

References break_environment_, v8::internal::compiler::ControlBuilder::environment(), v8::internal::compiler::StructuredGraphBuilder::Environment::MarkAsUnreachable(), and v8::internal::compiler::StructuredGraphBuilder::Environment::Merge().

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◆ EndBlock()

void v8::internal::compiler::BlockBuilder::EndBlock ( )

Definition at line 138 of file control-builders.cc.

138  {
139  break_environment_->Merge(environment());
140  set_environment(break_environment_);
141 }

References break_environment_, v8::internal::compiler::ControlBuilder::environment(), v8::internal::compiler::StructuredGraphBuilder::Environment::Merge(), and v8::internal::compiler::ControlBuilder::set_environment().

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Member Data Documentation

◆ break_environment_

Environment* v8::internal::compiler::BlockBuilder::break_environment_
private

Definition at line 138 of file control-builders.h.

Referenced by BeginBlock(), Break(), and EndBlock().

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