WebKit/Source/JavaScriptCore/ftl/FTLState.cpp at main · WebKit/WebKit · GitHub

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* 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 "FTLState.h"

#if ENABLE(FTL_JIT)

#include "AirCode.h"

#include "AirDisassembler.h"

#include "B3ValueInlines.h"

#include "CodeBlockWithJITType.h"

#include "FTLForOSREntryJITCode.h"

#include "FTLJITCode.h"

#include "FTLJITFinalizer.h"

#include "FTLPatchpointExceptionHandle.h"

#include "Options.h"

#include <wtf/RecursableLambda.h>

namespace JSC { namespace FTL {

using namespace B3;

using namespace DFG;

State::State(Graph& graph)

: graph(graph)

{

switch (graph.m_plan.mode()) {

case JITCompilationMode::FTL: {

jitCode = adoptRef(new JITCode());

break;

}

case JITCompilationMode::FTLForOSREntry: {

RefPtr<ForOSREntryJITCode> code = adoptRef(new ForOSREntryJITCode());

code->initializeEntryBuffer(graph.m_vm, graph.m_profiledBlock->numCalleeLocals());

code->setBytecodeIndex(graph.m_plan.osrEntryBytecodeIndex());

jitCode = code;

break;

}

default:

RELEASE_ASSERT_NOT_REACHED();

break;

}

graph.m_plan.setFinalizer(makeUnique<JITFinalizer>(graph.m_plan));

finalizer = static_cast<JITFinalizer*>(graph.m_plan.finalizer());

proc = makeUniqueWithoutFastMallocCheck<Procedure>(/* usesSIMD = */ false);

proc->setName(graph.m_codeBlock->inferredNameWithHash());

if (graph.m_vm.shouldBuilderPCToCodeOriginMapping() || Options::useIRDump() || Options::useSourceCodeDump())

proc->setNeedsPCToOriginMap();

proc->setOriginPrinter(

[] (PrintStream& out, B3::Origin origin) {

out.print(origin.dfgOrigin());

});

proc->setFrontendData(&graph);

if (RefPtr passes = graph.ionGraphPasses())

proc->setIonGraphPasses(passes.releaseNonNull());

}

void State::dumpDisassembly(PrintStream& out, LinkBuffer& linkBuffer, const ScopedLambda<void(DFG::Node*)>& perDFGNodeCallback)

{

B3::Air::Disassembler* disassembler = proc->code().disassembler();

out.atomically([&](auto&) {

out.print("Generated ", graph.m_plan.mode(), " code for ", CodeBlockWithJITType(graph.m_codeBlock, JITType::FTLJIT), ", instructions size = ", graph.m_codeBlock->instructionsSize(), ":\n");

B3::Value* currentB3Value = nullptr;

DFG::Node* currentDFGNode = nullptr;

UncheckedKeyHashSet<B3::Value*> printedValues;

UncheckedKeyHashSet<DFG::Node*> printedNodes;

const char* dfgPrefix = "DFG " " ";

const char* b3Prefix = "b3 " " ";

const char* airPrefix = "Air " " ";

const char* asmPrefix = "asm " " ";

auto printDFGNode = [&] (DFG::Node* node) {

if (currentDFGNode == node)

return;

currentDFGNode = node;

if (!currentDFGNode)

return;

perDFGNodeCallback(node);

UncheckedKeyHashSet<DFG::Node*> localPrintedNodes;

WTF::Function<void(DFG::Node*)> printNodeRecursive = [&] (DFG::Node* node) {

if (printedNodes.contains(node) || localPrintedNodes.contains(node))

return;

localPrintedNodes.add(node);

graph.doToChildren(node, [&] (Edge child) {

printNodeRecursive(child.node());

});

graph.dump(out, dfgPrefix, node);

};

printNodeRecursive(node);

printedNodes.add(node);

};

auto printB3Value = [&] (B3::Value* value) {

if (currentB3Value == value)

return;

currentB3Value = value;

if (!currentB3Value)

return;

printDFGNode(value->origin().dfgOrigin());

UncheckedKeyHashSet<B3::Value*> localPrintedValues;

auto printValueRecursive = recursableLambda([&] (auto self, B3::Value* value) -> void {

if (printedValues.contains(value) || localPrintedValues.contains(value))

return;

localPrintedValues.add(value);

for (unsigned i = 0; i < value->numChildren(); i++)

self(value->child(i));

out.print(b3Prefix);

value->deepDump(proc.get(), out);

out.print("\n");

});

printValueRecursive(currentB3Value);

printedValues.add(value);

};

B3::Value* prevOrigin = nullptr;

auto forEachInst = [&] (B3::Air::Inst& inst) {

if (inst.origin != prevOrigin) {

printB3Value(inst.origin);

prevOrigin = inst.origin;

}

};

disassembler->dump(proc->code(), out, linkBuffer, airPrefix, asmPrefix, forEachInst);

});

linkBuffer.didAlreadyDisassemble();

}

State::~State() = default;

PropertyInlineCache* State::addPropertyInlineCache()

{

ASSERT(!graph.m_plan.isUnlinked());

if (Options::useHandlerICInFTL())

return jitCode->common.m_handlerPropertyInlineCaches.add();

return jitCode->common.m_repatchingPropertyInlineCaches.add();

}

OptimizingCallLinkInfo* State::addCallLinkInfo(CodeOrigin codeOrigin)

{

return jitCode->common.m_callLinkInfos.add(codeOrigin, graph.m_codeBlock);

}

} } // namespace JSC::FTL

#endif // ENABLE(FTL_JIT)

WebKit/Source/JavaScriptCore/ftl/FTLState.cpp at main · WebKit/WebKit · GitHub

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