Mercurial > hg > graal-jvmci-8
annotate graal/com.oracle.graal.hotspot.sparc/src/com/oracle/graal/hotspot/sparc/SPARCHotSpotBackend.java @ 22054:0e095e2c24e2
Rename com.oracle.jvmci to jdk.internal.jvmci
author | twisti |
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date | Mon, 22 Jun 2015 12:12:53 -0700 |
parents | 5352b2437a2d |
children | d9f3acb4a9a1 |
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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.asm.sparc.SPARCAssembler.Annul.*; |
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26 import static com.oracle.graal.asm.sparc.SPARCAssembler.BranchPredict.*; |
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27 import static com.oracle.graal.asm.sparc.SPARCAssembler.CC.*; |
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28 import static com.oracle.graal.asm.sparc.SPARCAssembler.ConditionFlag.*; |
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29 import static com.oracle.graal.compiler.common.GraalOptions.*; |
22054 | 30 import static jdk.internal.jvmci.code.CallingConvention.Type.*; |
31 import static jdk.internal.jvmci.code.ValueUtil.*; | |
32 import static jdk.internal.jvmci.common.UnsafeAccess.*; | |
33 import static jdk.internal.jvmci.sparc.SPARC.*; | |
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34 |
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35 import java.util.*; |
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36 |
22054 | 37 import jdk.internal.jvmci.code.*; |
38 import jdk.internal.jvmci.hotspot.*; | |
39 import jdk.internal.jvmci.meta.*; | |
40 | |
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41 import com.oracle.graal.asm.*; |
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42 import com.oracle.graal.asm.sparc.*; |
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43 import com.oracle.graal.asm.sparc.SPARCMacroAssembler.*; |
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44 import com.oracle.graal.compiler.common.alloc.*; |
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45 import com.oracle.graal.compiler.common.cfg.*; |
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46 import com.oracle.graal.hotspot.*; |
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47 import com.oracle.graal.hotspot.meta.*; |
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48 import com.oracle.graal.hotspot.stubs.*; |
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49 import com.oracle.graal.lir.*; |
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50 import com.oracle.graal.lir.StandardOp.SaveRegistersOp; |
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51 import com.oracle.graal.lir.asm.*; |
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52 import com.oracle.graal.lir.framemap.*; |
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53 import com.oracle.graal.lir.gen.*; |
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54 import com.oracle.graal.lir.sparc.*; |
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55 import com.oracle.graal.nodes.*; |
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56 import com.oracle.graal.nodes.spi.*; |
10459 | 57 |
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58 /** |
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59 * HotSpot SPARC specific backend. |
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60 */ |
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61 public class SPARCHotSpotBackend extends HotSpotHostBackend { |
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62 |
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63 public SPARCHotSpotBackend(HotSpotGraalRuntimeProvider runtime, HotSpotProviders providers) { |
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64 super(runtime, providers); |
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65 } |
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66 |
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67 @Override |
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68 public FrameMapBuilder newFrameMapBuilder(RegisterConfig registerConfig) { |
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69 RegisterConfig registerConfigNonNull = registerConfig == null ? getCodeCache().getRegisterConfig() : registerConfig; |
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70 return new SPARCFrameMapBuilder(newFrameMap(registerConfigNonNull), getCodeCache(), registerConfigNonNull); |
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71 } |
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72 |
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73 @Override |
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74 public FrameMap newFrameMap(RegisterConfig registerConfig) { |
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75 return new SPARCFrameMap(getCodeCache(), registerConfig); |
10956 | 76 } |
77 | |
78 @Override | |
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79 public LIRGeneratorTool newLIRGenerator(CallingConvention cc, LIRGenerationResult lirGenRes) { |
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80 return new SPARCHotSpotLIRGenerator(getProviders(), getRuntime().getConfig(), cc, lirGenRes); |
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81 } |
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82 |
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83 @Override |
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84 public LIRGenerationResult newLIRGenerationResult(String compilationUnitName, LIR lir, FrameMapBuilder frameMapBuilder, ResolvedJavaMethod method, Object stub) { |
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85 return new SPARCHotSpotLIRGenerationResult(compilationUnitName, lir, frameMapBuilder, stub); |
15345 | 86 } |
87 | |
88 @Override | |
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89 public NodeLIRBuilderTool newNodeLIRBuilder(StructuredGraph graph, LIRGeneratorTool lirGen) { |
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90 return new SPARCHotSpotNodeLIRBuilder(getRuntime(), graph, lirGen); |
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91 } |
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92 |
10459 | 93 /** |
94 * Emits code to do stack overflow checking. | |
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95 * |
10459 | 96 * @param afterFrameInit specifies if the stack pointer has already been adjusted to allocate |
97 * the current frame | |
98 */ | |
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99 protected static void emitStackOverflowCheck(CompilationResultBuilder crb, int pagesToBang, boolean afterFrameInit) { |
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100 if (pagesToBang > 0) { |
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101 SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; |
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102 final int frameSize = crb.frameMap.totalFrameSize(); |
10459 | 103 if (frameSize > 0) { |
104 int lastFramePage = frameSize / unsafe.pageSize(); | |
105 // emit multiple stack bangs for methods with frames larger than a page | |
106 for (int i = 0; i <= lastFramePage; i++) { | |
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107 int disp = (i + pagesToBang) * unsafe.pageSize(); |
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108 if (afterFrameInit) { |
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109 disp -= frameSize; |
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110 } |
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111 crb.blockComment("[stack overflow check]"); |
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112 // Use SPARCAddress to get the final displacement including the stack bias. |
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113 SPARCAddress address = new SPARCAddress(sp, -disp); |
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114 if (SPARCAssembler.isSimm13(address.getDisplacement())) { |
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115 masm.stx(g0, address); |
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116 } else { |
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117 try (ScratchRegister sc = masm.getScratchRegister()) { |
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118 Register scratch = sc.getRegister(); |
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119 new Setx(address.getDisplacement(), scratch).emit(masm); |
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120 masm.stx(g0, new SPARCAddress(sp, scratch)); |
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121 } |
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122 } |
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124 } | |
125 } | |
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126 } |
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127 |
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128 public class HotSpotFrameContext implements FrameContext { |
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129 |
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130 final boolean isStub; |
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131 |
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132 HotSpotFrameContext(boolean isStub) { |
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133 this.isStub = isStub; |
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134 } |
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135 |
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136 public boolean hasFrame() { |
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137 return true; |
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138 } |
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139 |
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140 @Override |
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141 public void enter(CompilationResultBuilder crb) { |
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142 final int frameSize = crb.frameMap.totalFrameSize(); |
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143 final int stackpoinerChange = -frameSize; |
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144 SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; |
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145 if (!isStub && pagesToBang > 0) { |
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146 emitStackOverflowCheck(crb, pagesToBang, false); |
10459 | 147 } |
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148 |
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149 if (SPARCAssembler.isSimm13(stackpoinerChange)) { |
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150 masm.save(sp, stackpoinerChange, sp); |
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151 } else { |
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152 try (ScratchRegister sc = masm.getScratchRegister()) { |
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153 Register scratch = sc.getRegister(); |
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154 new Setx(stackpoinerChange, scratch).emit(masm); |
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155 masm.save(sp, scratch, sp); |
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156 } |
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157 } |
10459 | 158 |
159 if (ZapStackOnMethodEntry.getValue()) { | |
160 final int slotSize = 8; | |
161 for (int i = 0; i < frameSize / slotSize; ++i) { | |
162 // 0xC1C1C1C1 | |
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163 masm.stx(g0, new SPARCAddress(sp, i * slotSize)); |
10459 | 164 } |
165 } | |
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166 } |
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167 |
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168 @Override |
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169 public void leave(CompilationResultBuilder crb) { |
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170 SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; |
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171 masm.restoreWindow(); |
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172 } |
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173 } |
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174 |
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175 @Override |
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176 protected Assembler createAssembler(FrameMap frameMap) { |
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177 return new SPARCMacroAssembler(getTarget(), frameMap.getRegisterConfig()); |
10459 | 178 } |
179 | |
180 @Override | |
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181 public CompilationResultBuilder newCompilationResultBuilder(LIRGenerationResult lirGenRes, FrameMap frameMap, CompilationResult compilationResult, CompilationResultBuilderFactory factory) { |
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182 SPARCHotSpotLIRGenerationResult gen = (SPARCHotSpotLIRGenerationResult) lirGenRes; |
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183 LIR lir = gen.getLIR(); |
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184 assert gen.getDeoptimizationRescueSlot() == null || frameMap.frameNeedsAllocating() : "method that can deoptimize must have a frame"; |
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185 |
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186 Stub stub = gen.getStub(); |
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187 Assembler masm = createAssembler(frameMap); |
10459 | 188 // On SPARC we always use stack frames. |
189 HotSpotFrameContext frameContext = new HotSpotFrameContext(stub != null); | |
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190 CompilationResultBuilder crb = factory.createBuilder(getProviders().getCodeCache(), getProviders().getForeignCalls(), frameMap, masm, frameContext, compilationResult); |
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191 crb.setTotalFrameSize(frameMap.totalFrameSize()); |
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192 StackSlot deoptimizationRescueSlot = gen.getDeoptimizationRescueSlot(); |
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193 if (deoptimizationRescueSlot != null && stub == null) { |
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194 crb.compilationResult.setCustomStackAreaOffset(frameMap.offsetForStackSlot(deoptimizationRescueSlot)); |
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195 } |
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196 |
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197 if (stub != null) { |
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198 // Even on sparc we need to save floating point registers |
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199 Set<Register> definedRegisters = gatherDefinedRegisters(lir); |
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200 Map<LIRFrameState, SaveRegistersOp> calleeSaveInfo = gen.getCalleeSaveInfo(); |
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201 updateStub(stub, definedRegisters, calleeSaveInfo, frameMap); |
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202 } |
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203 |
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204 return crb; |
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205 } |
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206 |
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207 @Override |
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208 public void emitCode(CompilationResultBuilder crb, LIR lir, ResolvedJavaMethod installedCodeOwner) { |
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209 stuffDelayedControlTransfers(lir); |
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210 SPARCMacroAssembler masm = (SPARCMacroAssembler) crb.asm; |
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211 FrameMap frameMap = crb.frameMap; |
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212 RegisterConfig regConfig = frameMap.getRegisterConfig(); |
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213 HotSpotVMConfig config = getRuntime().getConfig(); |
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214 Label unverifiedStub = installedCodeOwner == null || installedCodeOwner.isStatic() ? null : new Label(); |
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215 boolean hasUnsafeAccess = crb.compilationResult.hasUnsafeAccess(); |
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216 int i = 0; |
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217 do { |
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218 if (i > 0) { |
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219 crb.reset(); |
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220 lir.resetLabels(); |
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221 resetDelayedControlTransfers(lir); |
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222 } |
10459 | 223 |
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224 // Emit the prefix |
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225 if (unverifiedStub != null) { |
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226 crb.recordMark(config.MARKID_UNVERIFIED_ENTRY); |
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227 // We need to use JavaCall here because we haven't entered the frame yet. |
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228 CallingConvention cc = regConfig.getCallingConvention(JavaCall, null, new JavaType[]{getProviders().getMetaAccess().lookupJavaType(Object.class)}, getTarget(), false); |
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229 Register inlineCacheKlass = g5; // see MacroAssembler::ic_call |
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230 |
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231 try (ScratchRegister sc = masm.getScratchRegister()) { |
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232 Register scratch = sc.getRegister(); |
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233 Register receiver = asRegister(cc.getArgument(0)); |
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234 SPARCAddress src = new SPARCAddress(receiver, config.hubOffset); |
10459 | 235 |
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236 masm.ldx(src, scratch); |
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237 masm.cmp(scratch, inlineCacheKlass); |
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238 } |
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239 masm.bpcc(NotEqual, NOT_ANNUL, unverifiedStub, Xcc, PREDICT_NOT_TAKEN); |
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240 masm.nop(); // delay slot |
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241 } |
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243 masm.align(config.codeEntryAlignment); |
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244 crb.recordMark(config.MARKID_OSR_ENTRY); |
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245 crb.recordMark(config.MARKID_VERIFIED_ENTRY); |
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246 |
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247 // Emit code for the LIR |
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248 crb.emit(lir); |
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249 } while (i++ < 1); |
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250 // Restore the unsafeAccess flag |
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251 crb.compilationResult.setHasUnsafeAccess(hasUnsafeAccess); |
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252 profileInstructions(lir, crb); |
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253 |
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254 HotSpotFrameContext frameContext = (HotSpotFrameContext) crb.frameContext; |
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255 HotSpotForeignCallsProvider foreignCalls = getProviders().getForeignCalls(); |
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256 if (!frameContext.isStub) { |
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257 crb.recordMark(config.MARKID_EXCEPTION_HANDLER_ENTRY); |
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258 SPARCCall.directCall(crb, masm, foreignCalls.lookupForeignCall(EXCEPTION_HANDLER), null, false, null); |
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259 crb.recordMark(config.MARKID_DEOPT_HANDLER_ENTRY); |
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260 SPARCCall.directCall(crb, masm, foreignCalls.lookupForeignCall(DEOPTIMIZATION_HANDLER), null, false, null); |
10459 | 261 } else { |
262 // No need to emit the stubs for entries back into the method since | |
263 // it has no calls that can cause such "return" entries | |
264 } | |
265 | |
266 if (unverifiedStub != null) { | |
10470 | 267 masm.bind(unverifiedStub); |
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268 try (ScratchRegister sc = masm.getScratchRegister()) { |
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269 Register scratch = sc.getRegister(); |
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270 SPARCCall.indirectJmp(crb, masm, scratch, foreignCalls.lookupForeignCall(IC_MISS_HANDLER)); |
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271 } |
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273 } |
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274 |
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275 private static void resetDelayedControlTransfers(LIR lir) { |
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276 for (AbstractBlockBase<?> block : lir.codeEmittingOrder()) { |
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277 for (LIRInstruction inst : lir.getLIRforBlock(block)) { |
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278 if (inst instanceof SPARCDelayedControlTransfer) { |
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279 ((SPARCDelayedControlTransfer) inst).resetState(); |
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280 } |
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281 } |
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282 } |
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283 } |
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284 |
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285 /** |
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286 * Fix-up over whole LIR. |
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287 * |
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288 * @see #stuffDelayedControlTransfers(LIR, AbstractBlockBase) |
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289 * @param l |
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290 */ |
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291 private static void stuffDelayedControlTransfers(LIR l) { |
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292 for (AbstractBlockBase<?> b : l.codeEmittingOrder()) { |
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293 stuffDelayedControlTransfers(l, b); |
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294 } |
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295 } |
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296 |
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297 /** |
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298 * Tries to put DelayedControlTransfer instructions and DelayableLIRInstructions together. Also |
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299 * it tries to move the DelayedLIRInstruction to the DelayedControlTransfer instruction, if |
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300 * possible. |
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301 */ |
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302 private static void stuffDelayedControlTransfers(LIR l, AbstractBlockBase<?> block) { |
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303 List<LIRInstruction> instructions = l.getLIRforBlock(block); |
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304 if (instructions.size() >= 2) { |
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305 LIRDependencyAccumulator acc = new LIRDependencyAccumulator(); |
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306 SPARCDelayedControlTransfer delayedTransfer = null; |
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307 int delayTransferPosition = -1; |
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308 for (int i = instructions.size() - 1; i >= 0; i--) { |
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309 LIRInstruction inst = instructions.get(i); |
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310 boolean adjacent = delayTransferPosition - i == 1; |
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311 if (!adjacent || inst.destroysCallerSavedRegisters() || leavesRegisterWindow(inst)) { |
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312 delayedTransfer = null; |
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313 } |
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314 if (inst instanceof SPARCDelayedControlTransfer) { |
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315 delayedTransfer = (SPARCDelayedControlTransfer) inst; |
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316 acc.start(inst); |
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317 delayTransferPosition = i; |
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318 } else if (delayedTransfer != null) { |
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319 boolean overlap = acc.add(inst); |
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320 if (!overlap && inst instanceof SPARCTailDelayedLIRInstruction) { |
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321 // We have found a non overlapping LIR instruction which can be delayed |
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322 ((SPARCTailDelayedLIRInstruction) inst).setDelayedControlTransfer(delayedTransfer); |
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323 delayedTransfer = null; |
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324 // Removed the moving as it causes problems (Nullpointer exceptions) |
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325 // if (!adjacent) { |
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326 // // If not adjacent, we make it adjacent |
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327 // instructions.remove(i); |
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328 // instructions.add(delayTransferPosition - 1, inst); |
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329 // } |
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330 } |
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331 } |
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332 } |
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333 } |
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334 } |
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335 |
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336 private static boolean leavesRegisterWindow(LIRInstruction inst) { |
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337 return inst instanceof SPARCLIRInstruction && ((SPARCLIRInstruction) inst).leavesRegisterWindow(); |
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338 } |
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339 |
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340 /** |
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341 * Accumulates inputs/outputs/temp/alive in a set along we walk back the LIRInstructions and |
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342 * detects, if there is any overlap. In this way LIRInstructions can be detected, which can be |
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343 * moved nearer to the DelayedControlTransfer instruction. |
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344 */ |
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345 private static class LIRDependencyAccumulator { |
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346 private final Set<Object> inputs = new HashSet<>(10); |
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347 private boolean overlap = false; |
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348 |
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349 private final InstructionValueConsumer valueConsumer = (instruction, value, mode, flags) -> { |
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350 Object valueObject = value; |
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351 if (isRegister(value)) { // Canonicalize registers |
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352 valueObject = asRegister(value); |
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353 } |
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354 if (!inputs.add(valueObject)) { |
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355 overlap = true; |
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356 } |
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357 }; |
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358 |
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359 public void start(LIRInstruction initial) { |
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360 inputs.clear(); |
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361 overlap = false; |
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362 initial.visitEachInput(valueConsumer); |
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363 initial.visitEachTemp(valueConsumer); |
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364 initial.visitEachAlive(valueConsumer); |
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365 } |
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366 |
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367 /** |
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368 * Adds the inputs of lir instruction to the accumulator and returns, true if there was any |
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369 * overlap of parameters. |
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370 * |
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371 * @param inst |
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372 * @return true if an overlap was found |
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373 */ |
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374 public boolean add(LIRInstruction inst) { |
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375 overlap = false; |
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376 inst.visitEachOutput(valueConsumer); |
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377 inst.visitEachTemp(valueConsumer); |
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378 inst.visitEachInput(valueConsumer); |
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379 inst.visitEachAlive(valueConsumer); |
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380 return overlap; |
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381 } |
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382 } |
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383 |
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384 @Override |
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385 public RegisterAllocationConfig newRegisterAllocationConfig(RegisterConfig registerConfig) { |
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386 RegisterConfig registerConfigNonNull = registerConfig == null ? getCodeCache().getRegisterConfig() : registerConfig; |
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387 return new RegisterAllocationConfig(registerConfigNonNull); |
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388 } |
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389 } |