/*

 * 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.hotspot.amd64;

import static jdk.vm.ci.code.ValueUtil.asRegister;

import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler;

import org.graalvm.compiler.debug.GraalError;

import org.graalvm.compiler.lir.LIRInstructionClass;

import org.graalvm.compiler.lir.Opcode;

import org.graalvm.compiler.lir.amd64.AMD64LIRInstruction;

import org.graalvm.compiler.lir.asm.CompilationResultBuilder;

import jdk.vm.ci.amd64.AMD64Kind;

import jdk.vm.ci.meta.Value;

/**

 * This provides the default implementation expected by some HotSpot based lowerings of Math

 * intrinsics. Depending on the release different patterns might be used.

 */

public final class AMD64HotSpotMathIntrinsicOp extends AMD64LIRInstruction {

    public static final LIRInstructionClass<AMD64HotSpotMathIntrinsicOp> TYPE = LIRInstructionClass.create(AMD64HotSpotMathIntrinsicOp.class);

    public enum IntrinsicOpcode {

        SIN,

        COS,

        TAN,

        LOG,

        LOG10

    }

    @Opcode private final IntrinsicOpcode opcode;

    @Def protected Value result;

    @Use protected Value input;

    public AMD64HotSpotMathIntrinsicOp(IntrinsicOpcode opcode, Value result, Value input) {

        super(TYPE);

        this.opcode = opcode;

        this.result = result;

        this.input = input;

    }

    @Override

    public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) {

        switch (opcode) {

            case LOG:

                masm.flog(asRegister(result, AMD64Kind.DOUBLE), asRegister(input, AMD64Kind.DOUBLE), false);

                break;

            case LOG10:

                masm.flog(asRegister(result, AMD64Kind.DOUBLE), asRegister(input, AMD64Kind.DOUBLE), true);

                break;

            case SIN:

                masm.fsin(asRegister(result, AMD64Kind.DOUBLE), asRegister(input, AMD64Kind.DOUBLE));

                break;

            case COS:

                masm.fcos(asRegister(result, AMD64Kind.DOUBLE), asRegister(input, AMD64Kind.DOUBLE));

                break;

            case TAN:

                masm.ftan(asRegister(result, AMD64Kind.DOUBLE), asRegister(input, AMD64Kind.DOUBLE));

                break;

            default:

                throw GraalError.shouldNotReachHere();

        }

    }

}