mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
synced 2025-04-07 09:21:41 +00:00
142 lines
4.7 KiB
C++
142 lines
4.7 KiB
C++
/*
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* Copyright (C) 2015-2020 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "B3Generate.h"
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#if ENABLE(B3_JIT)
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#include "AirGenerate.h"
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#include "B3Common.h"
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#include "B3DuplicateTails.h"
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#include "B3EliminateCommonSubexpressions.h"
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#include "B3EliminateDeadCode.h"
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#include "B3FixSSA.h"
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#include "B3FoldPathConstants.h"
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#include "B3HoistLoopInvariantValues.h"
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#include "B3InferSwitches.h"
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#include "B3LegalizeMemoryOffsets.h"
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#include "B3LowerMacros.h"
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#include "B3LowerMacrosAfterOptimizations.h"
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#include "B3LowerToAir.h"
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#include "B3MoveConstants.h"
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#include "B3OptimizeAssociativeExpressionTrees.h"
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#include "B3Procedure.h"
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#include "B3ReduceDoubleToFloat.h"
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#include "B3ReduceLoopStrength.h"
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#include "B3ReduceStrength.h"
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#include "B3TimingScope.h"
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#include "B3Validate.h"
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namespace JSC { namespace B3 {
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void prepareForGeneration(Procedure& procedure)
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{
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TimingScope timingScope("prepareForGeneration");
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generateToAir(procedure);
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Air::prepareForGeneration(procedure.code());
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}
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void generate(Procedure& procedure, CCallHelpers& jit)
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{
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Air::generate(procedure.code(), jit);
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}
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void generateToAir(Procedure& procedure)
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{
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TimingScope timingScope("generateToAir");
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if (shouldDumpIR(B3Mode) && !shouldDumpIRAtEachPhase(B3Mode)) {
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dataLog(tierName, "Initial B3:\n");
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dataLog(procedure);
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}
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// We don't require the incoming IR to have predecessors computed.
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procedure.resetReachability();
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if (shouldValidateIR())
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validate(procedure);
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if (procedure.optLevel() >= 2) {
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reduceDoubleToFloat(procedure);
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reduceStrength(procedure);
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// FIXME: Re-enable B3 hoistLoopInvariantValues
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// https://bugs.webkit.org/show_bug.cgi?id=212651
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if (Options::useB3HoistLoopInvariantValues())
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hoistLoopInvariantValues(procedure);
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if (eliminateCommonSubexpressions(procedure))
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eliminateCommonSubexpressions(procedure);
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eliminateDeadCode(procedure);
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inferSwitches(procedure);
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reduceLoopStrength(procedure);
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if (Options::useB3TailDup())
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duplicateTails(procedure);
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fixSSA(procedure);
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foldPathConstants(procedure);
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// FIXME: Add more optimizations here.
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// https://bugs.webkit.org/show_bug.cgi?id=150507
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} else if (procedure.optLevel() >= 1) {
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// FIXME: Explore better "quick mode" optimizations.
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reduceStrength(procedure);
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}
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// This puts the IR in quirks mode.
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lowerMacros(procedure);
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if (procedure.optLevel() >= 2) {
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optimizeAssociativeExpressionTrees(procedure);
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reduceStrength(procedure);
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// FIXME: Add more optimizations here.
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// https://bugs.webkit.org/show_bug.cgi?id=150507
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}
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lowerMacrosAfterOptimizations(procedure);
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legalizeMemoryOffsets(procedure);
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moveConstants(procedure);
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eliminateDeadCode(procedure);
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// FIXME: We should run pureCSE here to clean up some platform specific changes from the previous phases.
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// https://bugs.webkit.org/show_bug.cgi?id=164873
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if (shouldValidateIR())
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validate(procedure);
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// If we're doing super verbose dumping, the phase scope of any phase will already do a dump.
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// Note that lowerToAir() acts like a phase in this regard.
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if (shouldDumpIR(B3Mode) && !shouldDumpIRAtEachPhase(B3Mode)) {
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dataLog("B3 after ", procedure.lastPhaseName(), ", before generation:\n");
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dataLog(procedure);
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}
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lowerToAir(procedure);
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}
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} } // namespace JSC::B3
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#endif // ENABLE(B3_JIT)
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