Changeset 277305 in webkit for trunk/Source/JavaScriptCore/jit/JIT.cpp

Timestamp:

May 10, 2021, 4:21:41 PM (4 years ago)

Author:

[email protected]

Message:

Add support to collect stats on cumulative LinkBuffer linked sizes based on profiles.
​https://bugs.webkit.org/show_bug.cgi?id=225617

Reviewed by Saam Barati.

Source/JavaScriptCore:

There are 2 ways to dump the stats:

1. Specify --dumpLinkBufferStats as an argument to the jsc shell.
2. Call $vm.dumpLinkBufferStats() from your JS script to get the stats as a string. e.g.

$vm.print($vm.dumpLinkBufferStats());

Here's an example of what the dump looks like:

Cummulative LinkBuffer profile sizes:

BaselineJIT: 79480320 (75.798340 MB)

DFG: 36108672 (34.435913 MB)

Thunk: 22495360 (21.453247 MB)

InlineCache: 19538521 (18.633386 MB)

FTL: 5186240 (4.945984 MB)

Wasm: 1998272 (1.905701 MB)

YarrJIT: 1331072 (1.269409 MB)

CSSJIT: 0

Uncategorized: 0

The stats are currently grouped into some coarse profiles. If needed, we can
break these down into more fine grain profiles later.

• assembler/LinkBuffer.cpp:

(JSC::LinkBuffer::performFinalization):
(JSC::LinkBuffer::dumpProfileStatistics):

• assembler/LinkBuffer.h:

(JSC::LinkBuffer::LinkBuffer):

• bytecode/InlineAccess.cpp:

(JSC::linkCodeInline):
(JSC::InlineAccess::rewireStubAsJump):

• bytecode/PolymorphicAccess.cpp:

(JSC::PolymorphicAccess::regenerate):

• dfg/DFGJITCompiler.cpp:

(JSC::DFG::JITCompiler::compile):
(JSC::DFG::JITCompiler::compileFunction):

• dfg/DFGOSRExit.cpp:

(JSC::DFG::JSC_DEFINE_JIT_OPERATION):

• dfg/DFGThunks.cpp:

(JSC::DFG::osrExitGenerationThunkGenerator):
(JSC::DFG::osrEntryThunkGenerator):

• ftl/FTLCompile.cpp:

(JSC::FTL::compile):

• ftl/FTLLazySlowPath.cpp:

(JSC::FTL::LazySlowPath::generate):

• ftl/FTLLink.cpp:

(JSC::FTL::link):

• ftl/FTLOSRExitCompiler.cpp:

(JSC::FTL::compileStub):

• ftl/FTLThunks.cpp:

(JSC::FTL::genericGenerationThunkGenerator):
(JSC::FTL::slowPathCallThunkGenerator):

• jit/ExecutableAllocator.cpp:

(JSC::jitWriteThunkGenerator):

• jit/JIT.cpp:

(JSC::JIT::compileWithoutLinking):

• jit/JITMathIC.h:

(JSC::JITMathIC::generateOutOfLine):

• jit/JITOpcodes.cpp:

(JSC::JIT::privateCompileHasIndexedProperty):

• jit/JITOpcodes32_64.cpp:

(JSC::JIT::privateCompileHasIndexedProperty):

• jit/JITPropertyAccess.cpp:

(JSC::JIT::privateCompilePutByVal):
(JSC::JIT::privateCompilePutPrivateNameWithCachedId):
(JSC::JIT::privateCompilePutByValWithCachedId):

• jit/Repatch.cpp:

(JSC::linkPolymorphicCall):

• jit/SpecializedThunkJIT.h:

(JSC::SpecializedThunkJIT::finalize):

• jit/ThunkGenerators.cpp:

(JSC::throwExceptionFromCallSlowPathGenerator):
(JSC::linkCallThunkGenerator):
(JSC::linkPolymorphicCallThunkGenerator):
(JSC::virtualThunkFor):
(JSC::nativeForGenerator):
(JSC::arityFixupGenerator):
(JSC::unreachableGenerator):
(JSC::stringGetByValGenerator):
(JSC::boundFunctionCallGenerator):

• jsc.cpp:

(CommandLine::parseArguments):
(jscmain):

• llint/LLIntThunks.cpp:

(JSC::LLInt::generateThunkWithJumpTo):
(JSC::LLInt::generateThunkWithJumpToPrologue):
(JSC::LLInt::generateThunkWithJumpToLLIntReturnPoint):
(JSC::LLInt::getHostCallReturnValueThunk):
(JSC::LLInt::createJSGateThunk):
(JSC::LLInt::createWasmGateThunk):
(JSC::LLInt::createTailCallGate):
(JSC::LLInt::loopOSREntryGateThunk):
(JSC::LLInt::entryOSREntryGateThunk):
(JSC::LLInt::wasmOSREntryGateThunk):
(JSC::LLInt::exceptionHandlerGateThunk):
(JSC::LLInt::returnFromLLIntGateThunk):
(JSC::LLInt::tagGateThunk):
(JSC::LLInt::untagGateThunk):
(JSC::LLInt::jitCagePtrThunk):

• tools/JSDollarVM.cpp:

(JSC::JSC_DEFINE_HOST_FUNCTION):
(JSC::JSDollarVM::finishCreation):

• wasm/WasmBBQPlan.cpp:

(JSC::Wasm::BBQPlan::work):
(JSC::Wasm::BBQPlan::didCompleteCompilation):

• wasm/WasmBinding.cpp:

(JSC::Wasm::wasmToWasm):

• wasm/WasmLLIntPlan.cpp:

(JSC::Wasm::LLIntPlan::didCompleteCompilation):

• wasm/WasmOMGForOSREntryPlan.cpp:

(JSC::Wasm::OMGForOSREntryPlan::work):

• wasm/WasmOMGPlan.cpp:

(JSC::Wasm::OMGPlan::work):

• wasm/WasmThunks.cpp:

(JSC::Wasm::throwExceptionFromWasmThunkGenerator):
(JSC::Wasm::throwStackOverflowFromWasmThunkGenerator):
(JSC::Wasm::triggerOMGEntryTierUpThunkGenerator):

• wasm/js/WasmToJS.cpp:

(JSC::Wasm::wasmToJS):

• wasm/js/WebAssemblyFunction.cpp:

(JSC::WebAssemblyFunction::jsCallEntrypointSlow):

• yarr/YarrJIT.cpp:

Source/WebCore:

• cssjit/SelectorCompiler.cpp:

(WebCore::SelectorCompiler::SelectorCodeGenerator::compile):

File:

• trunk/Source/JavaScriptCore/jit/JIT.cpp (modified) (1 diff)

trunk/Source/JavaScriptCore/jit/JIT.cpp

@@ -843 +843 @@
     m_pcToCodeOriginMapBuilder.appendItem(label(), PCToCodeOriginMapBuilder::defaultCodeOrigin());
 
-    m_linkBuffer = std::unique_ptr<LinkBuffer>(new LinkBuffer(*this, m_codeBlock, effort));
+    m_linkBuffer = std::unique_ptr<LinkBuffer>(new LinkBuffer(*this, m_codeBlock, LinkBuffer::Profile::BaselineJIT, effort));
 
     MonotonicTime after { };