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annotate graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotBackend.java @ 19684:00d7b0adaf66
[SPARC] Change ld/st ops of SPARC to functions
author | Stefan Anzinger <stefan.anzinger@oracle.com> |
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date | Mon, 02 Mar 2015 18:44:14 +0100 |
parents | f1b4f2613702 |
children | 96ab2078eeaf |
rev | line source |
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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 package com.oracle.graal.hotspot.sparc; |
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24 |
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25 import static com.oracle.graal.api.code.CallingConvention.Type.*; |
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26 import static com.oracle.graal.api.code.ValueUtil.*; |
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27 import static com.oracle.graal.asm.sparc.SPARCAssembler.Annul.*; |
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28 import static com.oracle.graal.asm.sparc.SPARCAssembler.BranchPredict.*; |
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29 import static com.oracle.graal.asm.sparc.SPARCAssembler.CC.*; |
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30 import static com.oracle.graal.asm.sparc.SPARCAssembler.ConditionFlag.*; |
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31 import static com.oracle.graal.compiler.common.GraalOptions.*; |
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32 import static com.oracle.graal.compiler.common.UnsafeAccess.*; |
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33 import static com.oracle.graal.sparc.SPARC.*; |
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34 |
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35 import java.util.*; |
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36 |
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37 import com.oracle.graal.api.code.*; |
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38 import com.oracle.graal.api.meta.*; |
10459 | 39 import com.oracle.graal.asm.*; |
40 import com.oracle.graal.asm.sparc.*; | |
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41 import com.oracle.graal.asm.sparc.SPARCMacroAssembler.Setx; |
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42 import com.oracle.graal.compiler.common.cfg.*; |
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43 import com.oracle.graal.hotspot.*; |
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44 import com.oracle.graal.hotspot.meta.HotSpotCodeCacheProvider.MarkId; |
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45 import com.oracle.graal.hotspot.meta.*; |
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46 import com.oracle.graal.hotspot.stubs.*; |
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47 import com.oracle.graal.lir.*; |
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48 import com.oracle.graal.lir.StandardOp.SaveRegistersOp; |
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49 import com.oracle.graal.lir.asm.*; |
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50 import com.oracle.graal.lir.framemap.*; |
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51 import com.oracle.graal.lir.gen.*; |
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52 import com.oracle.graal.lir.sparc.*; |
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53 import com.oracle.graal.nodes.*; |
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54 import com.oracle.graal.nodes.spi.*; |
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55 import com.oracle.graal.sparc.*; |
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57 /** |
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58 * HotSpot SPARC specific backend. |
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59 */ |
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60 public class SPARCHotSpotBackend extends HotSpotHostBackend { |
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61 |
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62 public SPARCHotSpotBackend(HotSpotGraalRuntimeProvider runtime, HotSpotProviders providers) { |
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63 super(runtime, providers); |
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64 } |
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65 |
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66 @Override |
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67 public FrameMapBuilder newFrameMapBuilder(RegisterConfig registerConfig) { |
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68 RegisterConfig registerConfigNonNull = registerConfig == null ? getCodeCache().getRegisterConfig() : registerConfig; |
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69 return new SPARCFrameMapBuilder(newFrameMap(registerConfigNonNull), getCodeCache(), registerConfigNonNull); |
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70 } |
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71 |
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72 @Override |
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73 public FrameMap newFrameMap(RegisterConfig registerConfig) { |
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74 return new SPARCFrameMap(getCodeCache(), registerConfig); |
10956 | 75 } |
76 | |
77 @Override | |
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78 public LIRGeneratorTool newLIRGenerator(CallingConvention cc, LIRGenerationResult lirGenRes) { |
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79 return new SPARCHotSpotLIRGenerator(getProviders(), getRuntime().getConfig(), cc, lirGenRes); |
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80 } |
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81 |
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82 @Override |
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83 public LIRGenerationResult newLIRGenerationResult(LIR lir, FrameMapBuilder frameMapBuilder, ResolvedJavaMethod method, Object stub) { |
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84 return new SPARCHotSpotLIRGenerationResult(lir, frameMapBuilder, stub); |
15345 | 85 } |
86 | |
87 @Override | |
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88 public NodeLIRBuilderTool newNodeLIRBuilder(StructuredGraph graph, LIRGeneratorTool lirGen) { |
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89 return new SPARCHotSpotNodeLIRBuilder(getRuntime(), graph, lirGen); |
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90 } |
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91 |
10459 | 92 /** |
93 * Emits code to do stack overflow checking. | |
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94 * |
10459 | 95 * @param afterFrameInit specifies if the stack pointer has already been adjusted to allocate |
96 * the current frame | |
97 */ | |
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98 protected static void emitStackOverflowCheck(CompilationResultBuilder crb, int pagesToBang, boolean afterFrameInit) { |
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99 if (pagesToBang > 0) { |
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100 SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; |
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101 final int frameSize = crb.frameMap.totalFrameSize(); |
10459 | 102 if (frameSize > 0) { |
103 int lastFramePage = frameSize / unsafe.pageSize(); | |
104 // emit multiple stack bangs for methods with frames larger than a page | |
105 for (int i = 0; i <= lastFramePage; i++) { | |
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106 int disp = (i + pagesToBang) * unsafe.pageSize(); |
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107 if (afterFrameInit) { |
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108 disp -= frameSize; |
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109 } |
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110 crb.blockComment("[stack overflow check]"); |
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111 // Use SPARCAddress to get the final displacement including the stack bias. |
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112 SPARCAddress address = new SPARCAddress(sp, -disp); |
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113 if (SPARCAssembler.isSimm13(address.getDisplacement())) { |
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114 masm.stx(g0, address); |
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115 } else { |
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116 try (SPARCScratchRegister sc = SPARCScratchRegister.get()) { |
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117 Register scratch = sc.getRegister(); |
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118 new Setx(address.getDisplacement(), scratch).emit(masm); |
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119 masm.stx(g0, new SPARCAddress(sp, scratch)); |
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120 } |
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121 } |
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123 } | |
124 } | |
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125 } |
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126 |
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127 public class HotSpotFrameContext implements FrameContext { |
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128 |
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129 final boolean isStub; |
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130 |
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131 HotSpotFrameContext(boolean isStub) { |
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132 this.isStub = isStub; |
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133 } |
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134 |
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135 public boolean hasFrame() { |
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136 return true; |
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137 } |
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138 |
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139 @Override |
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140 public void enter(CompilationResultBuilder crb) { |
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141 final int frameSize = crb.frameMap.totalFrameSize(); |
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142 final int stackpoinerChange = -frameSize; |
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143 SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; |
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144 if (!isStub && pagesToBang > 0) { |
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145 emitStackOverflowCheck(crb, pagesToBang, false); |
10459 | 146 } |
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147 |
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148 if (SPARCAssembler.isSimm13(stackpoinerChange)) { |
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149 masm.save(sp, stackpoinerChange, sp); |
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150 } else { |
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151 try (SPARCScratchRegister sc = SPARCScratchRegister.get()) { |
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152 Register scratch = sc.getRegister(); |
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153 new Setx(stackpoinerChange, scratch).emit(masm); |
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154 masm.save(sp, scratch, sp); |
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155 } |
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156 } |
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158 if (ZapStackOnMethodEntry.getValue()) { | |
159 final int slotSize = 8; | |
160 for (int i = 0; i < frameSize / slotSize; ++i) { | |
161 // 0xC1C1C1C1 | |
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162 masm.stx(g0, new SPARCAddress(sp, i * slotSize)); |
10459 | 163 } |
164 } | |
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165 } |
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166 |
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167 @Override |
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168 public void leave(CompilationResultBuilder crb) { |
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169 SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; |
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170 masm.restoreWindow(); |
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171 } |
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172 } |
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173 |
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174 @Override |
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175 protected Assembler createAssembler(FrameMap frameMap) { |
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176 return new SPARCMacroAssembler(getTarget(), frameMap.getRegisterConfig()); |
10459 | 177 } |
178 | |
179 @Override | |
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180 public CompilationResultBuilder newCompilationResultBuilder(LIRGenerationResult lirGenRes, FrameMap frameMap, CompilationResult compilationResult, CompilationResultBuilderFactory factory) { |
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181 SPARCHotSpotLIRGenerationResult gen = (SPARCHotSpotLIRGenerationResult) lirGenRes; |
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182 LIR lir = gen.getLIR(); |
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183 assert gen.getDeoptimizationRescueSlot() == null || frameMap.frameNeedsAllocating() : "method that can deoptimize must have a frame"; |
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184 |
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185 Stub stub = gen.getStub(); |
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186 Assembler masm = createAssembler(frameMap); |
10459 | 187 // On SPARC we always use stack frames. |
188 HotSpotFrameContext frameContext = new HotSpotFrameContext(stub != null); | |
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189 CompilationResultBuilder crb = factory.createBuilder(getProviders().getCodeCache(), getProviders().getForeignCalls(), frameMap, masm, frameContext, compilationResult); |
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190 crb.setTotalFrameSize(frameMap.totalFrameSize()); |
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191 StackSlot deoptimizationRescueSlot = gen.getDeoptimizationRescueSlot(); |
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192 if (deoptimizationRescueSlot != null && stub == null) { |
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193 crb.compilationResult.setCustomStackAreaOffset(frameMap.offsetForStackSlot(deoptimizationRescueSlot)); |
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194 } |
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195 |
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196 if (stub != null) { |
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197 // Even on sparc we need to save floating point registers |
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198 Set<Register> definedRegisters = gatherDefinedRegisters(lir); |
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199 Map<LIRFrameState, SaveRegistersOp> calleeSaveInfo = gen.getCalleeSaveInfo(); |
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200 updateStub(stub, definedRegisters, calleeSaveInfo, frameMap); |
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201 } |
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202 |
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203 return crb; |
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204 } |
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205 |
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206 @Override |
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207 public void emitCode(CompilationResultBuilder crb, LIR lir, ResolvedJavaMethod installedCodeOwner) { |
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208 stuffDelayedControlTransfers(lir); |
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209 SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; |
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210 FrameMap frameMap = crb.frameMap; |
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211 RegisterConfig regConfig = frameMap.getRegisterConfig(); |
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212 HotSpotVMConfig config = getRuntime().getConfig(); |
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213 Label unverifiedStub = installedCodeOwner == null || installedCodeOwner.isStatic() ? null : new Label(); |
10459 | 214 |
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215 int i = 0; |
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216 do { |
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217 if (i > 0) { |
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218 crb.reset(); |
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219 lir.resetLabels(); |
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220 resetDelayedControlTransfers(lir); |
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221 } |
10459 | 222 |
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223 // Emit the prefix |
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224 if (unverifiedStub != null) { |
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225 MarkId.recordMark(crb, MarkId.UNVERIFIED_ENTRY); |
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226 // We need to use JavaCall here because we haven't entered the frame yet. |
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227 CallingConvention cc = regConfig.getCallingConvention(JavaCall, null, new JavaType[]{getProviders().getMetaAccess().lookupJavaType(Object.class)}, getTarget(), false); |
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228 Register inlineCacheKlass = g5; // see MacroAssembler::ic_call |
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229 |
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230 try (SPARCScratchRegister sc = SPARCScratchRegister.get()) { |
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231 Register scratch = sc.getRegister(); |
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232 Register receiver = asRegister(cc.getArgument(0)); |
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233 SPARCAddress src = new SPARCAddress(receiver, config.hubOffset); |
10459 | 234 |
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235 masm.ldx(src, scratch); |
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236 masm.cmp(scratch, inlineCacheKlass); |
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237 } |
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238 masm.bpcc(NotEqual, NOT_ANNUL, unverifiedStub, Xcc, PREDICT_NOT_TAKEN); |
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239 masm.nop(); // delay slot |
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240 } |
10459 | 241 |
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242 masm.align(config.codeEntryAlignment); |
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243 MarkId.recordMark(crb, MarkId.OSR_ENTRY); |
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244 MarkId.recordMark(crb, MarkId.VERIFIED_ENTRY); |
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245 |
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246 // Emit code for the LIR |
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247 crb.emit(lir); |
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248 } while (i++ < 1); |
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250 HotSpotFrameContext frameContext = (HotSpotFrameContext) crb.frameContext; |
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251 HotSpotForeignCallsProvider foreignCalls = getProviders().getForeignCalls(); |
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252 if (!frameContext.isStub) { |
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253 MarkId.recordMark(crb, MarkId.EXCEPTION_HANDLER_ENTRY); |
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254 SPARCCall.directCall(crb, masm, foreignCalls.lookupForeignCall(EXCEPTION_HANDLER), null, false, null); |
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255 MarkId.recordMark(crb, MarkId.DEOPT_HANDLER_ENTRY); |
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256 SPARCCall.directCall(crb, masm, foreignCalls.lookupForeignCall(DEOPTIMIZATION_HANDLER), null, false, null); |
10459 | 257 } else { |
258 // No need to emit the stubs for entries back into the method since | |
259 // it has no calls that can cause such "return" entries | |
260 } | |
261 | |
262 if (unverifiedStub != null) { | |
10470 | 263 masm.bind(unverifiedStub); |
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264 try (SPARCScratchRegister sc = SPARCScratchRegister.get()) { |
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265 Register scratch = sc.getRegister(); |
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266 SPARCCall.indirectJmp(crb, masm, scratch, foreignCalls.lookupForeignCall(IC_MISS_HANDLER)); |
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267 } |
10459 | 268 } |
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269 } |
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270 |
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271 private static void resetDelayedControlTransfers(LIR lir) { |
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272 for (AbstractBlock<?> block : lir.codeEmittingOrder()) { |
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273 for (LIRInstruction inst : lir.getLIRforBlock(block)) { |
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274 if (inst instanceof SPARCDelayedControlTransfer) { |
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275 ((SPARCDelayedControlTransfer) inst).resetState(); |
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276 } |
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277 } |
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278 } |
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279 } |
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280 |
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281 /** |
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282 * Fix-up over whole LIR. |
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283 * |
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284 * @see #stuffDelayedControlTransfers(LIR, AbstractBlock) |
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285 * @param l |
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286 */ |
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287 private static void stuffDelayedControlTransfers(LIR l) { |
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288 for (AbstractBlock<?> b : l.codeEmittingOrder()) { |
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289 stuffDelayedControlTransfers(l, b); |
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290 } |
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291 } |
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292 |
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293 /** |
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294 * Tries to put DelayedControlTransfer instructions and DelayableLIRInstructions together. Also |
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295 * it tries to move the DelayedLIRInstruction to the DelayedControlTransfer instruction, if |
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296 * possible. |
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297 */ |
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298 private static void stuffDelayedControlTransfers(LIR l, AbstractBlock<?> block) { |
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299 List<LIRInstruction> instructions = l.getLIRforBlock(block); |
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300 if (instructions.size() >= 2) { |
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301 LIRDependencyAccumulator acc = new LIRDependencyAccumulator(); |
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302 SPARCDelayedControlTransfer delayedTransfer = null; |
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303 int delayTransferPosition = -1; |
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304 for (int i = instructions.size() - 1; i >= 0; i--) { |
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305 LIRInstruction inst = instructions.get(i); |
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306 boolean adjacent = delayTransferPosition - i == 1; |
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307 if (!adjacent || inst.destroysCallerSavedRegisters() || leavesRegisterWindow(inst)) { |
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308 delayedTransfer = null; |
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309 } |
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310 if (inst instanceof SPARCDelayedControlTransfer) { |
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311 delayedTransfer = (SPARCDelayedControlTransfer) inst; |
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312 acc.start(inst); |
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313 delayTransferPosition = i; |
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314 } else if (delayedTransfer != null) { |
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315 boolean overlap = acc.add(inst); |
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316 if (!overlap && inst instanceof SPARCTailDelayedLIRInstruction) { |
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317 // We have found a non overlapping LIR instruction which can be delayed |
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318 ((SPARCTailDelayedLIRInstruction) inst).setDelayedControlTransfer(delayedTransfer); |
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319 delayedTransfer = null; |
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320 // Removed the moving as it causes problems (Nullpointer exceptions) |
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321 // if (!adjacent) { |
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322 // // If not adjacent, we make it adjacent |
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323 // instructions.remove(i); |
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324 // instructions.add(delayTransferPosition - 1, inst); |
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325 // } |
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326 } |
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327 } |
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328 } |
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329 } |
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330 } |
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331 |
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332 private static boolean leavesRegisterWindow(LIRInstruction inst) { |
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333 return inst instanceof SPARCLIRInstruction && ((SPARCLIRInstruction) inst).leavesRegisterWindow(); |
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334 } |
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335 |
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336 /** |
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337 * Accumulates inputs/outputs/temp/alive in a set along we walk back the LIRInstructions and |
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338 * detects, if there is any overlap. In this way LIRInstructions can be detected, which can be |
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339 * moved nearer to the DelayedControlTransfer instruction. |
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340 */ |
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341 private static class LIRDependencyAccumulator { |
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342 private final Set<Object> inputs = new HashSet<>(10); |
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343 private boolean overlap = false; |
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344 |
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345 private final InstructionValueConsumer valueConsumer = (instruction, value, mode, flags) -> { |
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346 Object valueObject = value; |
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347 if (isRegister(value)) { // Canonicalize registers |
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348 valueObject = asRegister(value); |
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349 } |
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350 if (!inputs.add(valueObject)) { |
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351 overlap = true; |
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352 } |
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353 }; |
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354 |
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355 public void start(LIRInstruction initial) { |
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356 inputs.clear(); |
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357 overlap = false; |
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358 initial.visitEachInput(valueConsumer); |
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359 initial.visitEachTemp(valueConsumer); |
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360 initial.visitEachAlive(valueConsumer); |
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361 } |
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362 |
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363 /** |
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364 * Adds the inputs of lir instruction to the accumulator and returns, true if there was any |
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365 * overlap of parameters. |
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366 * |
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367 * @param inst |
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368 * @return true if an overlap was found |
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369 */ |
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370 public boolean add(LIRInstruction inst) { |
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371 overlap = false; |
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372 inst.visitEachOutput(valueConsumer); |
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373 inst.visitEachTemp(valueConsumer); |
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374 inst.visitEachInput(valueConsumer); |
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375 inst.visitEachAlive(valueConsumer); |
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376 return overlap; |
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377 } |
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378 } |
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379 } |