Source/JavaScriptCore/b3/B3Generate.cpp

/*
 * Copyright (C) 2015 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
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 */

#include "config.h"
#include "B3Generate.h"

#if ENABLE(B3_JIT)

#include "AirCode.h"
#include "AirGenerate.h"
#include "AirInstInlines.h"
#include "B3Common.h"
#include "B3LowerMacros.h"
#include "B3LowerToAir.h"
#include "B3MoveConstants.h"
#include "B3Procedure.h"
#include "B3ReduceStrength.h"
#include "B3TimingScope.h"
#include "B3Validate.h"

namespace JSC { namespace B3 {

void generate(Procedure& procedure, CCallHelpers& jit)
{
    TimingScope timingScope("generate");

    Air::Code code(procedure);
    generateToAir(procedure, code);
    Air::generate(code, jit);
}

void generateToAir(Procedure& procedure, Air::Code& code)
{
    TimingScope timingScope("generateToAir");
    
    // We don't require the incoming IR to have predecessors computed.
    procedure.resetReachability();
    
    if (shouldValidateIR())
        validate(procedure);

    // If we're doing super verbose dumping, the phase scope of any phase will already do a dump.
    if (shouldDumpIR() && !shouldDumpIRAtEachPhase()) {
        dataLog("Initial B3:\n");
        dataLog(procedure);
    }

    lowerMacros(procedure);

    reduceStrength(procedure);
    
    // FIXME: Add more optimizations here.
    // https://bugs.webkit.org/show_bug.cgi?id=150507

    moveConstants(procedure);

    if (shouldValidateIR())
        validate(procedure);
    
    // If we're doing super verbose dumping, the phase scope of any phase will already do a dump.
    // Note that lowerToAir() acts like a phase in this regard.
    if (shouldDumpIR() && !shouldDumpIRAtEachPhase()) {
        dataLog("B3 after ", procedure.lastPhaseName(), ", before generation:\n");
        dataLog(procedure);
    }

    lowerToAir(procedure, code);
}

} } // namespace JSC::B3

#endif // ENABLE(B3_JIT)