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Copy pathFTLJITFinalizer.cpp
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149 lines (120 loc) · 5.03 KB
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/*
* Copyright (C) 2013, 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "FTLJITFinalizer.h"
#if ENABLE(FTL_JIT)
#include "CodeBlockWithJITType.h"
#include "DFGPlan.h"
#include "FTLThunks.h"
#include "ProfilerDatabase.h"
namespace JSC { namespace FTL {
using namespace DFG;
JITFinalizer::JITFinalizer(Plan& plan)
: Finalizer(plan)
{
}
JITFinalizer::~JITFinalizer()
{
}
size_t JITFinalizer::codeSize()
{
size_t result = 0;
if (exitThunksLinkBuffer)
result += exitThunksLinkBuffer->size();
if (entrypointLinkBuffer)
result += entrypointLinkBuffer->size();
if (sideCodeLinkBuffer)
result += sideCodeLinkBuffer->size();
if (handleExceptionsLinkBuffer)
result += handleExceptionsLinkBuffer->size();
for (unsigned i = jitCode->handles().size(); i--;)
result += jitCode->handles()[i]->sizeInBytes();
return result;
}
bool JITFinalizer::finalize()
{
RELEASE_ASSERT_NOT_REACHED();
return false;
}
bool JITFinalizer::finalizeFunction()
{
for (unsigned i = jitCode->handles().size(); i--;) {
MacroAssembler::cacheFlush(
jitCode->handles()[i]->start(), jitCode->handles()[i]->sizeInBytes());
}
if (exitThunksLinkBuffer) {
StackMaps::RecordMap recordMap = jitCode->stackmaps.computeRecordMap();
for (unsigned i = 0; i < osrExit.size(); ++i) {
OSRExitCompilationInfo& info = osrExit[i];
OSRExit& exit = jitCode->osrExit[i];
StackMaps::RecordMap::iterator iter = recordMap.find(exit.m_stackmapID);
if (iter == recordMap.end()) {
// It's OK, it was optimized out.
continue;
}
exitThunksLinkBuffer->link(
info.m_thunkJump,
CodeLocationLabel(
m_plan.vm.getCTIStub(osrExitGenerationThunkGenerator).code()));
}
jitCode->initializeExitThunks(
FINALIZE_DFG_CODE(
*exitThunksLinkBuffer,
("FTL exit thunks for %s", toCString(CodeBlockWithJITType(m_plan.codeBlock.get(), JITCode::FTLJIT)).data())));
} // else this function had no OSR exits, so no exit thunks.
if (sideCodeLinkBuffer) {
// Side code is for special slow paths that we generate ourselves, like for inline
// caches.
for (unsigned i = slowPathCalls.size(); i--;) {
SlowPathCall& call = slowPathCalls[i];
sideCodeLinkBuffer->link(
call.call(),
CodeLocationLabel(m_plan.vm.ftlThunks->getSlowPathCallThunk(m_plan.vm, call.key()).code()));
}
jitCode->addHandle(FINALIZE_DFG_CODE(
*sideCodeLinkBuffer,
("FTL side code for %s",
toCString(CodeBlockWithJITType(m_plan.codeBlock.get(), JITCode::FTLJIT)).data()))
.executableMemory());
}
if (handleExceptionsLinkBuffer) {
jitCode->addHandle(FINALIZE_DFG_CODE(
*handleExceptionsLinkBuffer,
("FTL exception handler for %s",
toCString(CodeBlockWithJITType(m_plan.codeBlock.get(), JITCode::FTLJIT)).data()))
.executableMemory());
}
jitCode->initializeArityCheckEntrypoint(
FINALIZE_DFG_CODE(
*entrypointLinkBuffer,
("FTL entrypoint thunk for %s with LLVM generated code at %p", toCString(CodeBlockWithJITType(m_plan.codeBlock.get(), JITCode::FTLJIT)).data(), function)));
m_plan.codeBlock->setJITCode(jitCode);
m_plan.vm.updateFTLLargestStackSize(jitCode->stackmaps.stackSize());
if (m_plan.compilation)
m_plan.vm.m_perBytecodeProfiler->addCompilation(m_plan.compilation);
return true;
}
} } // namespace JSC::FTL
#endif // ENABLE(FTL_JIT)