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1 //===- subzero/src/IceCfgNode.cpp - Basic block (node) implementation -----===// | 1 //===- subzero/src/IceCfgNode.cpp - Basic block (node) implementation -----===// |
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 // This file implements the CfgNode class, including the complexities | 10 // This file implements the CfgNode class, including the complexities |
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857 else | 857 else |
858 Str << ","; | 858 Str << ","; |
859 Var->emit(Func); | 859 Var->emit(Func); |
860 First = false; | 860 First = false; |
861 } | 861 } |
862 } | 862 } |
863 } | 863 } |
864 } | 864 } |
865 } | 865 } |
866 | 866 |
| 867 void updateStats(Cfg *Func, const Inst *I) { |
| 868 // Update emitted instruction count, plus fill/spill count for |
| 869 // Variable operands without a physical register. |
| 870 if (uint32_t Count = I->getEmitInstCount()) { |
| 871 Func->getContext()->statsUpdateEmitted(Count); |
| 872 if (Variable *Dest = I->getDest()) { |
| 873 if (!Dest->hasReg()) |
| 874 Func->getContext()->statsUpdateFills(); |
| 875 } |
| 876 for (SizeT S = 0; S < I->getSrcSize(); ++S) { |
| 877 if (Variable *Src = llvm::dyn_cast<Variable>(I->getSrc(S))) { |
| 878 if (!Src->hasReg()) |
| 879 Func->getContext()->statsUpdateSpills(); |
| 880 } |
| 881 } |
| 882 } |
| 883 } |
| 884 |
867 } // end of anonymous namespace | 885 } // end of anonymous namespace |
868 | 886 |
869 void CfgNode::emit(Cfg *Func) const { | 887 void CfgNode::emit(Cfg *Func) const { |
870 Func->setCurrentNode(this); | 888 Func->setCurrentNode(this); |
871 Ostream &Str = Func->getContext()->getStrEmit(); | 889 Ostream &Str = Func->getContext()->getStrEmit(); |
872 Liveness *Liveness = Func->getLiveness(); | 890 Liveness *Liveness = Func->getLiveness(); |
873 bool DecorateAsm = Liveness && Func->getContext()->getFlags().DecorateAsm; | 891 bool DecorateAsm = Liveness && Func->getContext()->getFlags().DecorateAsm; |
874 if (Func->getEntryNode() == this) { | |
875 Str << Func->getContext()->mangleName(Func->getFunctionName()) << ":\n"; | |
876 } | |
877 Str << getAsmName() << ":\n"; | 892 Str << getAsmName() << ":\n"; |
878 if (Func->useIntegratedAssembler()) { | |
879 Assembler *Asm = Func->getAssembler<Assembler>(); | |
880 Asm->BindCfgNodeLabel(getIndex()); | |
881 } | |
882 std::vector<SizeT> LiveRegCount(Func->getTarget()->getNumRegisters()); | 893 std::vector<SizeT> LiveRegCount(Func->getTarget()->getNumRegisters()); |
883 if (DecorateAsm) | 894 if (DecorateAsm) |
884 emitRegisterUsage(Str, Func, this, true, LiveRegCount); | 895 emitRegisterUsage(Str, Func, this, true, LiveRegCount); |
885 | 896 |
886 for (InstPhi *Phi : Phis) { | 897 for (InstPhi *Phi : Phis) { |
887 if (Phi->isDeleted()) | 898 if (Phi->isDeleted()) |
888 continue; | 899 continue; |
889 // Emitting a Phi instruction should cause an error. | 900 // Emitting a Phi instruction should cause an error. |
890 Inst *Instr = Phi; | 901 Inst *Instr = Phi; |
891 Instr->emit(Func); | 902 Instr->emit(Func); |
892 } | 903 } |
893 for (Inst *I : Insts) { | 904 for (Inst *I : Insts) { |
894 if (I->isDeleted()) | 905 if (I->isDeleted()) |
895 continue; | 906 continue; |
896 if (I->isRedundantAssign()) { | 907 if (I->isRedundantAssign()) { |
897 Variable *Dest = I->getDest(); | 908 Variable *Dest = I->getDest(); |
898 if (DecorateAsm && Dest->hasReg() && !I->isLastUse(I->getSrc(0))) | 909 if (DecorateAsm && Dest->hasReg() && !I->isLastUse(I->getSrc(0))) |
899 ++LiveRegCount[Dest->getRegNum()]; | 910 ++LiveRegCount[Dest->getRegNum()]; |
900 continue; | 911 continue; |
901 } | 912 } |
902 if (Func->useIntegratedAssembler()) { | 913 I->emit(Func); |
903 I->emitIAS(Func); | 914 if (DecorateAsm) |
904 } else { | 915 emitLiveRangesEnded(Str, Func, I, LiveRegCount); |
905 I->emit(Func); | 916 Str << "\n"; |
906 if (DecorateAsm) | 917 updateStats(Func, I); |
907 emitLiveRangesEnded(Str, Func, I, LiveRegCount); | |
908 Str << "\n"; | |
909 } | |
910 // Update emitted instruction count, plus fill/spill count for | |
911 // Variable operands without a physical register. | |
912 if (uint32_t Count = I->getEmitInstCount()) { | |
913 Func->getContext()->statsUpdateEmitted(Count); | |
914 if (Variable *Dest = I->getDest()) { | |
915 if (!Dest->hasReg()) | |
916 Func->getContext()->statsUpdateFills(); | |
917 } | |
918 for (SizeT S = 0; S < I->getSrcSize(); ++S) { | |
919 if (Variable *Src = llvm::dyn_cast<Variable>(I->getSrc(S))) { | |
920 if (!Src->hasReg()) | |
921 Func->getContext()->statsUpdateSpills(); | |
922 } | |
923 } | |
924 } | |
925 } | 918 } |
926 if (DecorateAsm) | 919 if (DecorateAsm) |
927 emitRegisterUsage(Str, Func, this, false, LiveRegCount); | 920 emitRegisterUsage(Str, Func, this, false, LiveRegCount); |
928 } | 921 } |
929 | 922 |
| 923 void CfgNode::emitIAS(Cfg *Func) const { |
| 924 Func->setCurrentNode(this); |
| 925 Assembler *Asm = Func->getAssembler<Assembler>(); |
| 926 Asm->BindCfgNodeLabel(getIndex()); |
| 927 for (InstPhi *Phi : Phis) { |
| 928 if (Phi->isDeleted()) |
| 929 continue; |
| 930 // Emitting a Phi instruction should cause an error. |
| 931 Inst *Instr = Phi; |
| 932 Instr->emitIAS(Func); |
| 933 } |
| 934 for (Inst *I : Insts) { |
| 935 if (I->isDeleted()) |
| 936 continue; |
| 937 if (I->isRedundantAssign()) |
| 938 continue; |
| 939 I->emitIAS(Func); |
| 940 updateStats(Func, I); |
| 941 } |
| 942 } |
| 943 |
930 void CfgNode::dump(Cfg *Func) const { | 944 void CfgNode::dump(Cfg *Func) const { |
931 Func->setCurrentNode(this); | 945 Func->setCurrentNode(this); |
932 Ostream &Str = Func->getContext()->getStrDump(); | 946 Ostream &Str = Func->getContext()->getStrDump(); |
933 Liveness *Liveness = Func->getLiveness(); | 947 Liveness *Liveness = Func->getLiveness(); |
934 if (Func->getContext()->isVerbose(IceV_Instructions)) { | 948 if (Func->getContext()->isVerbose(IceV_Instructions)) { |
935 Str << getName() << ":\n"; | 949 Str << getName() << ":\n"; |
936 } | 950 } |
937 // Dump list of predecessor nodes. | 951 // Dump list of predecessor nodes. |
938 if (Func->getContext()->isVerbose(IceV_Preds) && !InEdges.empty()) { | 952 if (Func->getContext()->isVerbose(IceV_Preds) && !InEdges.empty()) { |
939 Str << " // preds = "; | 953 Str << " // preds = "; |
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997 if (!First) | 1011 if (!First) |
998 Str << ", "; | 1012 Str << ", "; |
999 First = false; | 1013 First = false; |
1000 Str << "%" << I->getName(); | 1014 Str << "%" << I->getName(); |
1001 } | 1015 } |
1002 Str << "\n"; | 1016 Str << "\n"; |
1003 } | 1017 } |
1004 } | 1018 } |
1005 | 1019 |
1006 } // end of namespace Ice | 1020 } // end of namespace Ice |
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