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annotate graal/com.oracle.graal.hotspot.hsail/src/com/oracle/graal/hotspot/hsail/HSAILHotSpotNodeLIRBuilder.java @ 15021:9dcd5407a603

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added support for overriding/complementing JMH arguments in jmh command with a JSON string
author Doug Simon <doug.simon@oracle.com>
date Tue, 08 Apr 2014 16:04:59 +0200
parents db4254246f9a
children 2ee777221036
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 package com.oracle.graal.hotspot.hsail;
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26 import sun.misc.*;
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27
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28 import com.oracle.graal.api.meta.*;
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29 import com.oracle.graal.compiler.gen.*;
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30 import com.oracle.graal.compiler.hsail.*;
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31 import com.oracle.graal.graph.*;
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32 import com.oracle.graal.hotspot.HotSpotVMConfig.CompressEncoding;
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33 import com.oracle.graal.hotspot.meta.*;
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34 import com.oracle.graal.hotspot.nodes.*;
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35 import com.oracle.graal.lir.*;
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36 import com.oracle.graal.lir.hsail.*;
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37 import com.oracle.graal.lir.hsail.HSAILControlFlow.CondMoveOp;
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38 import com.oracle.graal.lir.hsail.HSAILMove.CompareAndSwapCompressedOp;
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39 import com.oracle.graal.lir.hsail.HSAILMove.CompareAndSwapOp;
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40 import com.oracle.graal.nodes.*;
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41 import com.oracle.graal.nodes.calc.*;
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42 import com.oracle.graal.nodes.java.*;
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43
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44 /**
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45 * The HotSpot specific portion of the HSAIL LIR generator.
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46 */
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47 public class HSAILHotSpotNodeLIRBuilder extends HSAILNodeLIRBuilder {
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48
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49 public HSAILHotSpotNodeLIRBuilder(StructuredGraph graph, LIRGenerator lirGen) {
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50 super(graph, lirGen);
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51 }
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52
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53 private HSAILHotSpotLIRGenerator getGen() {
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54 return (HSAILHotSpotLIRGenerator) gen;
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55 }
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56
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57 /**
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58 * Appends either a {@link CompareAndSwapOp} or a {@link CompareAndSwapCompressedOp} depending
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59 * on whether the memory location of a given {@link LoweredCompareAndSwapNode} contains a
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60 * compressed oop. For the {@link CompareAndSwapCompressedOp} case, allocates a number of
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61 * scratch registers. The result {@link #operand(ValueNode) operand} for {@code node} complies
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62 * with the API for {@link Unsafe#compareAndSwapInt(Object, long, int, int)}.
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63 *
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64 * @param address the memory location targeted by the operation
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65 */
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66 @Override
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67 public void visitCompareAndSwap(LoweredCompareAndSwapNode node, Value address) {
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68 Kind kind = node.getNewValue().getKind();
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69 assert kind == node.getExpectedValue().getKind();
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70 Variable expected = gen.load(operand(node.getExpectedValue()));
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71 Variable newValue = gen.load(operand(node.getNewValue()));
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72 HSAILAddressValue addressValue = getGen().asAddressValue(address);
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73 Variable casResult = newVariable(kind);
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74 if (getGen().config.useCompressedOops && node.isCompressible()) {
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75 // make 64-bit scratch variables for expected and new
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76 Variable scratchExpected64 = newVariable(Kind.Long);
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77 Variable scratchNewValue64 = newVariable(Kind.Long);
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78 // make 32-bit scratch variables for expected and new and result
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79 Variable scratchExpected32 = newVariable(Kind.Int);
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80 Variable scratchNewValue32 = newVariable(Kind.Int);
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81 Variable scratchCasResult32 = newVariable(Kind.Int);
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82 append(new CompareAndSwapCompressedOp(casResult, addressValue, expected, newValue, scratchExpected64, scratchNewValue64, scratchExpected32, scratchNewValue32, scratchCasResult32,
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83 getGen().getNarrowOopBase(), getGen().getNarrowOopShift(), getGen().getLogMinObjectAlignment()));
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84 } else {
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85 append(new CompareAndSwapOp(casResult, addressValue, expected, newValue));
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86 }
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87 Variable nodeResult = newVariable(node.getKind());
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88 append(new CondMoveOp(HSAILLIRGenerator.mapKindToCompareOp(kind), casResult, expected, nodeResult, Condition.EQ, Constant.INT_1, Constant.INT_0));
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89 setResult(node, nodeResult);
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90 }
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91
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92 @Override
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93 protected void emitNode(ValueNode node) {
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94 if (node instanceof CurrentJavaThreadNode) {
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95 throw new GraalInternalError("HSAILHotSpotLIRGenerator cannot handle node: " + node);
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96 } else {
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97 super.emitNode(node);
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98 }
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99 }
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100
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101 /**
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102 * @return a compressed version of the incoming constant lifted from AMD64HotSpotLIRGenerator
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103 */
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104 protected static Constant compress(Constant c, CompressEncoding encoding) {
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105 if (c.getKind() == Kind.Long) {
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106 int compressedValue = (int) (((c.asLong() - encoding.base) >> encoding.shift) & 0xffffffffL);
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107 if (c instanceof HotSpotMetaspaceConstant) {
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108 return HotSpotMetaspaceConstant.forMetaspaceObject(Kind.Int, compressedValue, HotSpotMetaspaceConstant.getMetaspaceObject(c));
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109 } else {
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110 return Constant.forIntegerKind(Kind.Int, compressedValue);
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111 }
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112 } else {
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113 throw GraalInternalError.shouldNotReachHere();
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114 }
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115 }
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116 }