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| 1 //===- subzero/src/IceTargetLoweringMIPS32.cpp - MIPS32 lowering ----------===// | 1 //===- subzero/src/IceTargetLoweringMIPS32.cpp - MIPS32 lowering ----------===// |
| 2 // | 2 // |
| 3 // The Subzero Code Generator | 3 // The Subzero Code Generator |
| 4 // | 4 // |
| 5 // This file is distributed under the University of Illinois Open Source | 5 // This file is distributed under the University of Illinois Open Source |
| 6 // License. See LICENSE.TXT for details. | 6 // License. See LICENSE.TXT for details. |
| 7 // | 7 // |
| 8 //===----------------------------------------------------------------------===// | 8 //===----------------------------------------------------------------------===// |
| 9 /// | 9 /// |
| 10 /// \file | 10 /// \file |
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| 130 | 130 |
| 131 // TODO(stichnot): share passes with X86? | 131 // TODO(stichnot): share passes with X86? |
| 132 // https://code.google.com/p/nativeclient/issues/detail?id=4094 | 132 // https://code.google.com/p/nativeclient/issues/detail?id=4094 |
| 133 genTargetHelperCalls(); | 133 genTargetHelperCalls(); |
| 134 | 134 |
| 135 // Merge Alloca instructions, and lay out the stack. | 135 // Merge Alloca instructions, and lay out the stack. |
| 136 static constexpr bool SortAndCombineAllocas = false; | 136 static constexpr bool SortAndCombineAllocas = false; |
| 137 Func->processAllocas(SortAndCombineAllocas); | 137 Func->processAllocas(SortAndCombineAllocas); |
| 138 Func->dump("After Alloca processing"); | 138 Func->dump("After Alloca processing"); |
| 139 | 139 |
| 140 if (!Ctx->getFlags().getPhiEdgeSplit()) { | 140 if (!Ctx->getFlags().getEnablePhiEdgeSplit()) { |
| 141 // Lower Phi instructions. | 141 // Lower Phi instructions. |
| 142 Func->placePhiLoads(); | 142 Func->placePhiLoads(); |
| 143 if (Func->hasError()) | 143 if (Func->hasError()) |
| 144 return; | 144 return; |
| 145 Func->placePhiStores(); | 145 Func->placePhiStores(); |
| 146 if (Func->hasError()) | 146 if (Func->hasError()) |
| 147 return; | 147 return; |
| 148 Func->deletePhis(); | 148 Func->deletePhis(); |
| 149 if (Func->hasError()) | 149 if (Func->hasError()) |
| 150 return; | 150 return; |
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| 193 assert(Func->validateLiveness()); | 193 assert(Func->validateLiveness()); |
| 194 // The post-codegen dump is done here, after liveness analysis and associated | 194 // The post-codegen dump is done here, after liveness analysis and associated |
| 195 // cleanup, to make the dump cleaner and more useful. | 195 // cleanup, to make the dump cleaner and more useful. |
| 196 Func->dump("After initial MIPS32 codegen"); | 196 Func->dump("After initial MIPS32 codegen"); |
| 197 Func->getVMetadata()->init(VMK_All); | 197 Func->getVMetadata()->init(VMK_All); |
| 198 regAlloc(RAK_Global); | 198 regAlloc(RAK_Global); |
| 199 if (Func->hasError()) | 199 if (Func->hasError()) |
| 200 return; | 200 return; |
| 201 Func->dump("After linear scan regalloc"); | 201 Func->dump("After linear scan regalloc"); |
| 202 | 202 |
| 203 if (Ctx->getFlags().getPhiEdgeSplit()) { | 203 if (Ctx->getFlags().getEnablePhiEdgeSplit()) { |
| 204 Func->advancedPhiLowering(); | 204 Func->advancedPhiLowering(); |
| 205 Func->dump("After advanced Phi lowering"); | 205 Func->dump("After advanced Phi lowering"); |
| 206 } | 206 } |
| 207 | 207 |
| 208 // Stack frame mapping. | 208 // Stack frame mapping. |
| 209 Func->genFrame(); | 209 Func->genFrame(); |
| 210 if (Func->hasError()) | 210 if (Func->hasError()) |
| 211 return; | 211 return; |
| 212 Func->dump("After stack frame mapping"); | 212 Func->dump("After stack frame mapping"); |
| 213 | 213 |
| 214 Func->contractEmptyNodes(); | 214 Func->contractEmptyNodes(); |
| 215 Func->reorderNodes(); | 215 Func->reorderNodes(); |
| 216 | 216 |
| 217 // Branch optimization. This needs to be done just before code emission. In | 217 // Branch optimization. This needs to be done just before code emission. In |
| 218 // particular, no transformations that insert or reorder CfgNodes should be | 218 // particular, no transformations that insert or reorder CfgNodes should be |
| 219 // done after branch optimization. We go ahead and do it before nop insertion | 219 // done after branch optimization. We go ahead and do it before nop insertion |
| 220 // to reduce the amount of work needed for searching for opportunities. | 220 // to reduce the amount of work needed for searching for opportunities. |
| 221 Func->doBranchOpt(); | 221 Func->doBranchOpt(); |
| 222 Func->dump("After branch optimization"); | 222 Func->dump("After branch optimization"); |
| 223 | 223 |
| 224 // Nop insertion | 224 // Nop insertion |
| 225 if (Ctx->getFlags().shouldDoNopInsertion()) { | 225 if (Ctx->getFlags().getShouldDoNopInsertion()) { |
| 226 Func->doNopInsertion(); | 226 Func->doNopInsertion(); |
| 227 } | 227 } |
| 228 } | 228 } |
| 229 | 229 |
| 230 void TargetMIPS32::translateOm1() { | 230 void TargetMIPS32::translateOm1() { |
| 231 TimerMarker T(TimerStack::TT_Om1, Func); | 231 TimerMarker T(TimerStack::TT_Om1, Func); |
| 232 | 232 |
| 233 // TODO: share passes with X86? | 233 // TODO: share passes with X86? |
| 234 genTargetHelperCalls(); | 234 genTargetHelperCalls(); |
| 235 | 235 |
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| 260 if (Func->hasError()) | 260 if (Func->hasError()) |
| 261 return; | 261 return; |
| 262 Func->dump("After regalloc of infinite-weight variables"); | 262 Func->dump("After regalloc of infinite-weight variables"); |
| 263 | 263 |
| 264 Func->genFrame(); | 264 Func->genFrame(); |
| 265 if (Func->hasError()) | 265 if (Func->hasError()) |
| 266 return; | 266 return; |
| 267 Func->dump("After stack frame mapping"); | 267 Func->dump("After stack frame mapping"); |
| 268 | 268 |
| 269 // Nop insertion | 269 // Nop insertion |
| 270 if (Ctx->getFlags().shouldDoNopInsertion()) { | 270 if (Ctx->getFlags().getShouldDoNopInsertion()) { |
| 271 Func->doNopInsertion(); | 271 Func->doNopInsertion(); |
| 272 } | 272 } |
| 273 } | 273 } |
| 274 | 274 |
| 275 bool TargetMIPS32::doBranchOpt(Inst *Instr, const CfgNode *NextNode) { | 275 bool TargetMIPS32::doBranchOpt(Inst *Instr, const CfgNode *NextNode) { |
| 276 (void)Instr; | 276 (void)Instr; |
| 277 (void)NextNode; | 277 (void)NextNode; |
| 278 UnimplementedError(Func->getContext()->getFlags()); | 278 UnimplementedError(Func->getContext()->getFlags()); |
| 279 return false; | 279 return false; |
| 280 } | 280 } |
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| 1317 Str << "\t.set\t" | 1317 Str << "\t.set\t" |
| 1318 << "nomips16\n"; | 1318 << "nomips16\n"; |
| 1319 } | 1319 } |
| 1320 | 1320 |
| 1321 SmallBitVector TargetMIPS32::TypeToRegisterSet[RCMIPS32_NUM]; | 1321 SmallBitVector TargetMIPS32::TypeToRegisterSet[RCMIPS32_NUM]; |
| 1322 SmallBitVector TargetMIPS32::TypeToRegisterSetUnfiltered[RCMIPS32_NUM]; | 1322 SmallBitVector TargetMIPS32::TypeToRegisterSetUnfiltered[RCMIPS32_NUM]; |
| 1323 SmallBitVector TargetMIPS32::RegisterAliases[RegMIPS32::Reg_NUM]; | 1323 SmallBitVector TargetMIPS32::RegisterAliases[RegMIPS32::Reg_NUM]; |
| 1324 | 1324 |
| 1325 } // end of namespace MIPS32 | 1325 } // end of namespace MIPS32 |
| 1326 } // end of namespace Ice | 1326 } // end of namespace Ice |
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