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/*
* Copyright (C) 2011, 2012, 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 "DFGDriver.h"
#include "JSObject.h"
#include "JSString.h"
#include "CodeBlock.h"
#include "DFGJITCode.h"
#include "DFGPlan.h"
#include "DFGThunks.h"
#include "DFGWorklist.h"
#include "JITCode.h"
#include "JSCInlines.h"
#include "Options.h"
#include "SamplingTool.h"
#include <wtf/Atomics.h>
#if ENABLE(FTL_JIT)
#include "FTLThunks.h"
#endif
namespace JSC { namespace DFG {
static unsigned numCompilations;
unsigned getNumCompilations()
{
return numCompilations;
}
#if ENABLE(DFG_JIT)
static CompilationResult compileImpl(
VM& vm, CodeBlock* codeBlock, CodeBlock* profiledDFGCodeBlock, CompilationMode mode,
unsigned osrEntryBytecodeIndex, const Operands<JSValue>& mustHandleValues,
PassRefPtr<DeferredCompilationCallback> callback)
{
SamplingRegion samplingRegion("DFG Compilation (Driver)");
numCompilations++;
ASSERT(codeBlock);
ASSERT(codeBlock->alternative());
ASSERT(codeBlock->alternative()->jitType() == JITCode::BaselineJIT);
ASSERT(!profiledDFGCodeBlock || profiledDFGCodeBlock->jitType() == JITCode::DFGJIT);
if (logCompilationChanges(mode))
dataLog("DFG(Driver) compiling ", *codeBlock, " with ", mode, ", number of instructions = ", codeBlock->instructionCount(), "\n");
// Make sure that any stubs that the DFG is going to use are initialized. We want to
// make sure that all JIT code generation does finalization on the main thread.
vm.getCTIStub(osrExitGenerationThunkGenerator);
vm.getCTIStub(throwExceptionFromCallSlowPathGenerator);
if (mode == DFGMode) {
vm.getCTIStub(linkCallThunkGenerator);
vm.getCTIStub(linkConstructThunkGenerator);
vm.getCTIStub(linkClosureCallThunkGenerator);
vm.getCTIStub(virtualCallThunkGenerator);
vm.getCTIStub(virtualConstructThunkGenerator);
} else {
vm.getCTIStub(linkCallThatPreservesRegsThunkGenerator);
vm.getCTIStub(linkConstructThatPreservesRegsThunkGenerator);
vm.getCTIStub(linkClosureCallThatPreservesRegsThunkGenerator);
vm.getCTIStub(virtualCallThatPreservesRegsThunkGenerator);
vm.getCTIStub(virtualConstructThatPreservesRegsThunkGenerator);
}
if (CallEdgeLog::isEnabled())
vm.ensureCallEdgeLog().processLog();
RefPtr<Plan> plan = adoptRef(
new Plan(codeBlock, profiledDFGCodeBlock, mode, osrEntryBytecodeIndex, mustHandleValues));
if (Options::enableConcurrentJIT()) {
Worklist* worklist = ensureGlobalWorklistFor(mode);
plan->callback = callback;
if (logCompilationChanges(mode))
dataLog("Deferring DFG compilation of ", *codeBlock, " with queue length ", worklist->queueLength(), ".\n");
worklist->enqueue(plan);
return CompilationDeferred;
}
plan->compileInThread(*vm.dfgState, 0);
return plan->finalizeWithoutNotifyingCallback();
}
#else // ENABLE(DFG_JIT)
static CompilationResult compileImpl(
VM&, CodeBlock*, CodeBlock*, CompilationMode, unsigned, const Operands<JSValue>&,
PassRefPtr<DeferredCompilationCallback>)
{
return CompilationFailed;
}
#endif // ENABLE(DFG_JIT)
CompilationResult compile(
VM& vm, CodeBlock* codeBlock, CodeBlock* profiledDFGCodeBlock, CompilationMode mode,
unsigned osrEntryBytecodeIndex, const Operands<JSValue>& mustHandleValues,
PassRefPtr<DeferredCompilationCallback> passedCallback)
{
RefPtr<DeferredCompilationCallback> callback = passedCallback;
CompilationResult result = compileImpl(
vm, codeBlock, profiledDFGCodeBlock, mode, osrEntryBytecodeIndex, mustHandleValues,
callback);
if (result != CompilationDeferred)
callback->compilationDidComplete(codeBlock, result);
return result;
}
} } // namespace JSC::DFG
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