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/*
* Copyright (C) 2011-2021 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 "CodeBlock.h"
#include "DFGJITCode.h"
#include "DFGPlan.h"
#include "DFGThunks.h"
#include "FunctionAllowlist.h"
#include "JITCode.h"
#include "JITWorklist.h"
#include "Options.h"
#include "ThunkGenerators.h"
#include "TypeProfilerLog.h"
#include <wtf/NeverDestroyed.h>
namespace JSC { namespace DFG {
static unsigned numCompilations;
unsigned getNumCompilations()
{
return numCompilations;
}
#if ENABLE(DFG_JIT)
static FunctionAllowlist& ensureGlobalDFGAllowlist()
{
static LazyNeverDestroyed<FunctionAllowlist> dfgAllowlist;
static std::once_flag initializeAllowlistFlag;
std::call_once(initializeAllowlistFlag, [] {
const char* functionAllowlistFile = Options::dfgAllowlist();
dfgAllowlist.construct(functionAllowlistFile);
});
return dfgAllowlist;
}
static CompilationResult compileImpl(
VM& vm, CodeBlock* codeBlock, CodeBlock* profiledDFGCodeBlock, JITCompilationMode mode,
BytecodeIndex osrEntryBytecodeIndex, Operands<std::optional<JSValue>>&& mustHandleValues,
Ref<DeferredCompilationCallback>&& callback)
{
if (!Options::bytecodeRangeToDFGCompile().isInRange(codeBlock->instructionsSize())
|| !ensureGlobalDFGAllowlist().contains(codeBlock))
return CompilationFailed;
numCompilations++;
ASSERT(codeBlock);
ASSERT(codeBlock->alternative());
ASSERT(JITCode::isBaselineCode(codeBlock->alternative()->jitType()));
ASSERT(!profiledDFGCodeBlock || profiledDFGCodeBlock->jitType() == JITType::DFGJIT);
dataLogLnIf(logCompilationChanges(mode), "DFG(Driver) compiling ", *codeBlock, " with ", mode, ", instructions size = ", codeBlock->instructionsSize());
if (vm.typeProfiler())
vm.typeProfilerLog()->processLogEntries(vm, "Preparing for DFG compilation."_s);
Ref<Plan> plan = adoptRef(*new Plan(codeBlock, profiledDFGCodeBlock, mode, osrEntryBytecodeIndex, WTFMove(mustHandleValues)));
plan->setCallback(WTFMove(callback));
JITWorklist& worklist = JITWorklist::ensureGlobalWorklist();
dataLogLnIf(Options::useConcurrentJIT() && logCompilationChanges(mode), "Deferring DFG compilation of ", *codeBlock, " with queue length ", worklist.queueLength(), ".\n");
return worklist.enqueue(WTFMove(plan));
}
#else // ENABLE(DFG_JIT)
static CompilationResult compileImpl(
VM&, CodeBlock*, CodeBlock*, JITCompilationMode, BytecodeIndex, const Operands<std::optional<JSValue>>&,
Ref<DeferredCompilationCallback>&&)
{
return CompilationFailed;
}
#endif // ENABLE(DFG_JIT)
CompilationResult compile(
VM& vm, CodeBlock* codeBlock, CodeBlock* profiledDFGCodeBlock, JITCompilationMode mode,
BytecodeIndex osrEntryBytecodeIndex, Operands<std::optional<JSValue>>&& mustHandleValues,
Ref<DeferredCompilationCallback>&& callback)
{
return compileImpl(vm, codeBlock, profiledDFGCodeBlock, mode, osrEntryBytecodeIndex, WTFMove(mustHandleValues), callback.copyRef());
}
} } // namespace JSC::DFG
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