/*
 * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */


package org.graalvm.compiler.lir.amd64;

import static jdk.vm.ci.amd64.AMD64.xmm0;
import static jdk.vm.ci.amd64.AMD64.xmm1;
import static org.graalvm.compiler.lir.amd64.AMD64HotSpotHelper.registersToValues;

import org.graalvm.compiler.core.common.LIRKind;
import org.graalvm.compiler.lir.LIRInstructionClass;
import org.graalvm.compiler.lir.Variable;
import org.graalvm.compiler.lir.gen.LIRGenerator;

import jdk.vm.ci.amd64.AMD64Kind;
import jdk.vm.ci.code.Register;
import jdk.vm.ci.code.RegisterValue;
import jdk.vm.ci.meta.Value;

AMD64MathIntrinsicBinaryOp assumes that the input values are stored in the xmm0 and xmm1 registers, and it will emit the output value into the xmm0 register. emitLIRWrapper(LIRGenerator, Value, Value) is provided for emitting necessary mov LIRs before and after this LIR instruction. /**
 * AMD64MathIntrinsicBinaryOp assumes that the input values are stored in the xmm0 and xmm1
 * registers, and it will emit the output value into the xmm0 register.
 * {@link #emitLIRWrapper(LIRGenerator, Value, Value)} is provided for emitting necessary mov LIRs
 * before and after this LIR instruction.
 */
public abstract class AMD64MathIntrinsicBinaryOp extends AMD64LIRInstruction {

    @Def protected Value output;
    @Use protected Value input0;
    @Use protected Value input1;
    @Temp protected Value[] temps;

    public AMD64MathIntrinsicBinaryOp(LIRInstructionClass<? extends AMD64MathIntrinsicBinaryOp> type, Register... registers) {
        super(type);

        input0 = xmm0.asValue(LIRKind.value(AMD64Kind.DOUBLE));
        input1 = xmm1.asValue(LIRKind.value(AMD64Kind.DOUBLE));
        output = xmm0.asValue(LIRKind.value(AMD64Kind.DOUBLE));

        temps = registersToValues(registers);
    }

    public final Variable emitLIRWrapper(LIRGenerator gen, Value x, Value y) {
        LIRKind kind = LIRKind.combine(x, y);
        RegisterValue xmm0Value = xmm0.asValue(kind);
        gen.emitMove(xmm0Value, x);
        RegisterValue xmm1Value = xmm1.asValue(kind);
        gen.emitMove(xmm1Value, y);
        gen.append(this);
        Variable result = gen.newVariable(kind);
        gen.emitMove(result, xmm0Value);
        return result;
    }
}