AMD64PrefetchOp.java revision 12651:6ef01bd40ce2 
1/*
2 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24package org.graalvm.compiler.lir.amd64;
25
26import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.COMPOSITE;
27
28import org.graalvm.compiler.asm.amd64.AMD64MacroAssembler;
29import org.graalvm.compiler.debug.GraalError;
30import org.graalvm.compiler.lir.LIRInstructionClass;
31import org.graalvm.compiler.lir.asm.CompilationResultBuilder;
32
33public final class AMD64PrefetchOp extends AMD64LIRInstruction {
34    public static final LIRInstructionClass<AMD64PrefetchOp> TYPE = LIRInstructionClass.create(AMD64PrefetchOp.class);
35
36    private final int instr;  // AllocatePrefetchInstr
37    @Alive({COMPOSITE}) protected AMD64AddressValue address;
38
39    public AMD64PrefetchOp(AMD64AddressValue address, int instr) {
40        super(TYPE);
41        this.address = address;
42        this.instr = instr;
43    }
44
45    @Override
46    public void emitCode(CompilationResultBuilder crb, AMD64MacroAssembler masm) {
47        switch (instr) {
48            case 0:
49                masm.prefetchnta(address.toAddress());
50                break;
51            case 1:
52                masm.prefetcht0(address.toAddress());
53                break;
54            case 2:
55                masm.prefetcht2(address.toAddress());
56                break;
57            case 3:
58                masm.prefetchw(address.toAddress());
59                break;
60            default:
61                throw GraalError.shouldNotReachHere("unspported prefetch op " + instr);
62
63        }
64    }
65}
66