Add super sampler begin and end bytecodes.
authorkeith_miller@apple.com <keith_miller@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Wed, 8 Nov 2017 21:26:33 +0000 (21:26 +0000)
committerkeith_miller@apple.com <keith_miller@apple.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
Wed, 8 Nov 2017 21:26:33 +0000 (21:26 +0000)
commit8a8be0cc574173ba70e01a44726ea8caf9d163b0
tree98f8d2edec16d14fd8110874625f162576298887
parent7e886062650b3a2273b2181ec1182bd7693ddb51
Add super sampler begin and end bytecodes.
https://bugs.webkit.org/show_bug.cgi?id=179376

Reviewed by Filip Pizlo.

This patch adds a way to measure a narrow range of bytecodes for
performance. This is done using the same infrastructure as the
super sampler. I also added a class that helps do the bytecode
checking with RAII. One problem with the current way this is done
is that we don't handle decrementing early exits, either from
branches or exceptions. So, when using this API users need to
ensure that there are no early exits or that those exits don't
occur on the measure code.

* JavaScriptCore.xcodeproj/project.pbxproj:
* bytecode/BytecodeDumper.cpp:
(JSC::BytecodeDumper<Block>::dumpBytecode):
* bytecode/BytecodeList.json:
* bytecode/BytecodeUseDef.h:
(JSC::computeUsesForBytecodeOffset):
(JSC::computeDefsForBytecodeOffset):
* bytecompiler/BytecodeGenerator.cpp:
(JSC::BytecodeGenerator::emitSuperSamplerBegin):
(JSC::BytecodeGenerator::emitSuperSamplerEnd):
* bytecompiler/BytecodeGenerator.h:
* bytecompiler/SuperSamplerBytecodeScope.h: Added.
(JSC::SuperSamplerBytecodeScope::SuperSamplerBytecodeScope):
(JSC::SuperSamplerBytecodeScope::~SuperSamplerBytecodeScope):
* dfg/DFGAbstractInterpreterInlines.h:
(JSC::DFG::AbstractInterpreter<AbstractStateType>::executeEffects):
* dfg/DFGByteCodeParser.cpp:
(JSC::DFG::ByteCodeParser::parseBlock):
* dfg/DFGClobberize.h:
(JSC::DFG::clobberize):
* dfg/DFGClobbersExitState.cpp:
(JSC::DFG::clobbersExitState):
* dfg/DFGDoesGC.cpp:
(JSC::DFG::doesGC):
* dfg/DFGFixupPhase.cpp:
(JSC::DFG::FixupPhase::fixupNode):
* dfg/DFGMayExit.cpp:
* dfg/DFGNodeType.h:
* dfg/DFGPredictionPropagationPhase.cpp:
* dfg/DFGSafeToExecute.h:
(JSC::DFG::safeToExecute):
* dfg/DFGSpeculativeJIT.cpp:
* dfg/DFGSpeculativeJIT32_64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* dfg/DFGSpeculativeJIT64.cpp:
(JSC::DFG::SpeculativeJIT::compile):
* ftl/FTLCapabilities.cpp:
(JSC::FTL::canCompile):
* ftl/FTLLowerDFGToB3.cpp:
(JSC::FTL::DFG::LowerDFGToB3::compileNode):
(JSC::FTL::DFG::LowerDFGToB3::compileSuperSamplerBegin):
(JSC::FTL::DFG::LowerDFGToB3::compileSuperSamplerEnd):
* jit/JIT.cpp:
(JSC::JIT::privateCompileMainPass):
* jit/JIT.h:
* jit/JITOpcodes.cpp:
(JSC::JIT::emit_op_super_sampler_begin):
(JSC::JIT::emit_op_super_sampler_end):
* llint/LLIntSlowPaths.cpp:
(JSC::LLInt::LLINT_SLOW_PATH_DECL):
* llint/LLIntSlowPaths.h:
* llint/LowLevelInterpreter.asm:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@224594 268f45cc-cd09-0410-ab3c-d52691b4dbfc
29 files changed:
Source/JavaScriptCore/ChangeLog
Source/JavaScriptCore/JavaScriptCore.xcodeproj/project.pbxproj
Source/JavaScriptCore/bytecode/BytecodeDumper.cpp
Source/JavaScriptCore/bytecode/BytecodeList.json
Source/JavaScriptCore/bytecode/BytecodeUseDef.h
Source/JavaScriptCore/bytecompiler/BytecodeGenerator.cpp
Source/JavaScriptCore/bytecompiler/BytecodeGenerator.h
Source/JavaScriptCore/bytecompiler/SuperSamplerBytecodeScope.h [new file with mode: 0644]
Source/JavaScriptCore/dfg/DFGAbstractInterpreterInlines.h
Source/JavaScriptCore/dfg/DFGByteCodeParser.cpp
Source/JavaScriptCore/dfg/DFGClobberize.h
Source/JavaScriptCore/dfg/DFGClobbersExitState.cpp
Source/JavaScriptCore/dfg/DFGDoesGC.cpp
Source/JavaScriptCore/dfg/DFGFixupPhase.cpp
Source/JavaScriptCore/dfg/DFGMayExit.cpp
Source/JavaScriptCore/dfg/DFGNodeType.h
Source/JavaScriptCore/dfg/DFGPredictionPropagationPhase.cpp
Source/JavaScriptCore/dfg/DFGSafeToExecute.h
Source/JavaScriptCore/dfg/DFGSpeculativeJIT.cpp
Source/JavaScriptCore/dfg/DFGSpeculativeJIT32_64.cpp
Source/JavaScriptCore/dfg/DFGSpeculativeJIT64.cpp
Source/JavaScriptCore/ftl/FTLCapabilities.cpp
Source/JavaScriptCore/ftl/FTLLowerDFGToB3.cpp
Source/JavaScriptCore/jit/JIT.cpp
Source/JavaScriptCore/jit/JIT.h
Source/JavaScriptCore/jit/JITOpcodes.cpp
Source/JavaScriptCore/llint/LLIntSlowPaths.cpp
Source/JavaScriptCore/llint/LLIntSlowPaths.h
Source/JavaScriptCore/llint/LowLevelInterpreter.asm