Source/JavaScriptCore/b3/B3Opcode.cpp

/*
 * Copyright (C) 2015-2017 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 "B3Opcode.h"

#if ENABLE(B3_JIT)

#include <wtf/PrintStream.h>

#if !ASSERT_ENABLED
IGNORE_RETURN_TYPE_WARNINGS_BEGIN
#endif

namespace JSC { namespace B3 {

std::optional<Opcode> invertedCompare(Opcode opcode, Type type)
{
    switch (opcode) {
    case Equal:
        return NotEqual;
    case NotEqual:
        return Equal;
    case LessThan:
        if (type.isInt())
            return GreaterEqual;
        return std::nullopt;
    case GreaterThan:
        if (type.isInt())
            return LessEqual;
        return std::nullopt;
    case LessEqual:
        if (type.isInt())
            return GreaterThan;
        return std::nullopt;
    case GreaterEqual:
        if (type.isInt())
            return LessThan;
        return std::nullopt;
    case Above:
        return BelowEqual;
    case Below:
        return AboveEqual;
    case AboveEqual:
        return Below;
    case BelowEqual:
        return Above;
    default:
        return std::nullopt;
    }
}

Opcode storeOpcode(Bank bank, Width width)
{
    switch (bank) {
    case GP:
        switch (width) {
        case Width8:
            return Store8;
        case Width16:
            return Store16;
        default:
            return Store;
        }
    case FP:
        return Store;
    }
    ASSERT_NOT_REACHED();
}

} } // namespace JSC::B3
#if !ASSERT_ENABLED
IGNORE_RETURN_TYPE_WARNINGS_END
#endif

#endif // ENABLE(B3_JIT)