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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

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 * accompanied this code).

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 * 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,

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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.

 * {@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;

    }

}