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comparison graal/com.oracle.graal.lir.amd64/src/com/oracle/graal/lir/amd64/AMD64Compare.java @ 5061:e808627bd16f

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Renamed projects.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Thu, 08 Mar 2012 19:24:17 +0100
parents graal/com.oracle.max.graal.lir.amd64/src/com/oracle/graal/lir/amd64/AMD64Compare.java@4ed4295ce15f
children d89b20486d87
comparison
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5060:4ed4295ce15f 5061:e808627bd16f
1 /*
2 * Copyright (c) 2011, 2012, 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 package com.oracle.graal.lir.amd64;
24
25 import static com.oracle.max.cri.ci.CiValueUtil.*;
26
27 import java.util.*;
28
29 import com.oracle.max.asm.target.amd64.*;
30 import com.oracle.max.cri.ci.*;
31 import com.oracle.graal.graph.*;
32 import com.oracle.graal.lir.*;
33 import com.oracle.graal.lir.asm.*;
34
35 public enum AMD64Compare {
36 ICMP, LCMP, ACMP, FCMP, DCMP;
37
38 public static class CompareOp extends AMD64LIRInstruction {
39 public CompareOp(AMD64Compare opcode, CiValue x, CiValue y) {
40 super(opcode, LIRInstruction.NO_OPERANDS, null, new CiValue[] {x, y}, LIRInstruction.NO_OPERANDS, LIRInstruction.NO_OPERANDS);
41 }
42
43 @Override
44 public void emitCode(TargetMethodAssembler tasm, AMD64MacroAssembler masm) {
45 CiValue x = input(0);
46 CiValue y = input(1);
47 emit(tasm, masm, (AMD64Compare) code, x, y);
48 }
49
50 @Override
51 public EnumSet<OperandFlag> flagsFor(OperandMode mode, int index) {
52 if (mode == OperandMode.Input && index == 0) {
53 return EnumSet.of(OperandFlag.Register);
54 } else if (mode == OperandMode.Input && index == 1) {
55 return EnumSet.of(OperandFlag.Register, OperandFlag.Stack, OperandFlag.Constant);
56 }
57 throw GraalInternalError.shouldNotReachHere();
58 }
59
60 @Override
61 protected void verify() {
62 CiValue x = input(0);
63 CiValue y = input(1);
64
65 super.verify();
66 assert (name().startsWith("I") && x.kind == CiKind.Int && y.kind.stackKind() == CiKind.Int)
67 || (name().startsWith("I") && x.kind == CiKind.Jsr && y.kind == CiKind.Jsr)
68 || (name().startsWith("L") && x.kind == CiKind.Long && y.kind == CiKind.Long)
69 || (name().startsWith("A") && x.kind == CiKind.Object && y.kind == CiKind.Object)
70 || (name().startsWith("F") && x.kind == CiKind.Float && y.kind == CiKind.Float)
71 || (name().startsWith("D") && x.kind == CiKind.Double && y.kind == CiKind.Double);
72 }
73 }
74
75 public static void emit(TargetMethodAssembler tasm, AMD64MacroAssembler masm, AMD64Compare opcode, CiValue x, CiValue y) {
76 if (isRegister(y)) {
77 switch (opcode) {
78 case ICMP: masm.cmpl(asIntReg(x), asIntReg(y)); break;
79 case LCMP: masm.cmpq(asLongReg(x), asLongReg(y)); break;
80 case ACMP: masm.cmpptr(asObjectReg(x), asObjectReg(y)); break;
81 case FCMP: masm.ucomiss(asFloatReg(x), asFloatReg(y)); break;
82 case DCMP: masm.ucomisd(asDoubleReg(x), asDoubleReg(y)); break;
83 default: throw GraalInternalError.shouldNotReachHere();
84 }
85 } else if (isConstant(y)) {
86 switch (opcode) {
87 case ICMP: masm.cmpl(asIntReg(x), tasm.asIntConst(y)); break;
88 case LCMP: masm.cmpq(asLongReg(x), tasm.asIntConst(y)); break;
89 case ACMP:
90 if (((CiConstant) y).isNull()) {
91 masm.cmpq(asObjectReg(x), 0); break;
92 } else {
93 throw GraalInternalError.shouldNotReachHere("Only null object constants are allowed in comparisons");
94 }
95 case FCMP: masm.ucomiss(asFloatReg(x), tasm.asFloatConstRef(y)); break;
96 case DCMP: masm.ucomisd(asDoubleReg(x), tasm.asDoubleConstRef(y)); break;
97 default: throw GraalInternalError.shouldNotReachHere();
98 }
99 } else {
100 switch (opcode) {
101 case ICMP: masm.cmpl(asIntReg(x), tasm.asIntAddr(y)); break;
102 case LCMP: masm.cmpq(asLongReg(x), tasm.asLongAddr(y)); break;
103 case ACMP: masm.cmpptr(asObjectReg(x), tasm.asObjectAddr(y)); break;
104 case FCMP: masm.ucomiss(asFloatReg(x), tasm.asFloatAddr(y)); break;
105 case DCMP: masm.ucomisd(asDoubleReg(x), tasm.asDoubleAddr(y)); break;
106 default: throw GraalInternalError.shouldNotReachHere();
107 }
108 }
109 }
110 }