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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
 *
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 * 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 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.LIRGeneratorTool;

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

AMD64MathIntrinsicUnaryOp assumes that the input value is stored at the xmm0 register, and will emit the output value into the xmm0 register as well. emitLIRWrapper(LIRGeneratorTool, Value) is provided for emitting necessary mov LIRs before and after this LIR instruction. /**
 * AMD64MathIntrinsicUnaryOp assumes that the input value is stored at the xmm0 register, and will
 * emit the output value into the xmm0 register as well.
 * {@link #emitLIRWrapper(LIRGeneratorTool, Value)} is provided for emitting necessary mov LIRs
 * before and after this LIR instruction.
 */
public abstract class AMD64MathIntrinsicUnaryOp extends AMD64LIRInstruction {

    @Def protected Value output;
    @Use protected Value input;
    @Temp protected Value[] temps;

    public AMD64MathIntrinsicUnaryOp(LIRInstructionClass<? extends AMD64MathIntrinsicUnaryOp> type, Register... registers) {
        super(type);

        input = xmm0.asValue(LIRKind.value(AMD64Kind.DOUBLE));
        output = xmm0.asValue(LIRKind.value(AMD64Kind.DOUBLE));

        temps = registersToValues(registers);
    }

    public final Variable emitLIRWrapper(LIRGeneratorTool gen, Value value) {
        LIRKind kind = LIRKind.combine(value);
        RegisterValue xmm0Value = xmm0.asValue(kind);
        gen.emitMove(xmm0Value, value);
        gen.append(this);
        Variable result = gen.newVariable(kind);
        gen.emitMove(result, xmm0Value);
        return result;
    }

}