diff options
Diffstat (limited to 'utils/TableGen/RegisterInfoEmitter.cpp')
| -rw-r--r-- | utils/TableGen/RegisterInfoEmitter.cpp | 99 |
1 files changed, 49 insertions, 50 deletions
diff --git a/utils/TableGen/RegisterInfoEmitter.cpp b/utils/TableGen/RegisterInfoEmitter.cpp index c8cd0f56e4d..ff61e98b14c 100644 --- a/utils/TableGen/RegisterInfoEmitter.cpp +++ b/utils/TableGen/RegisterInfoEmitter.cpp @@ -156,6 +156,19 @@ void RegisterInfoEmitter::runEnums(raw_ostream &OS, OS << "#endif // GET_REGINFO_ENUM\n\n"; } +static void printInt(raw_ostream &OS, int Val) { + OS << Val; +} + +static const char *getMinimalTypeForRange(uint64_t Range) { + assert(Range < 0xFFFFFFFFULL && "Enum too large"); + if (Range > 0xFFFF) + return "uint32_t"; + if (Range > 0xFF) + return "uint16_t"; + return "uint8_t"; +} + void RegisterInfoEmitter:: EmitRegUnitPressure(raw_ostream &OS, const CodeGenRegBank &RegBank, const std::string &ClassName) { @@ -179,7 +192,7 @@ EmitRegUnitPressure(raw_ostream &OS, const CodeGenRegBank &RegBank, } OS << "}, \t// " << RC.getName() << "\n"; } - OS << " {0, 0} };\n" + OS << " };\n" << " return RCWeightTable[RC->getID()];\n" << "}\n\n"; @@ -204,7 +217,7 @@ EmitRegUnitPressure(raw_ostream &OS, const CodeGenRegBank &RegBank, assert(RU.Weight < 256 && "RegUnit too heavy"); OS << RU.Weight << ", "; } - OS << "0 };\n" + OS << "};\n" << " return RUWeightTable[RegUnit];\n"; } else { @@ -222,8 +235,11 @@ EmitRegUnitPressure(raw_ostream &OS, const CodeGenRegBank &RegBank, << "const char *" << ClassName << "::\n" << "getRegPressureSetName(unsigned Idx) const {\n" << " static const char *PressureNameTable[] = {\n"; + unsigned MaxRegUnitWeight = 0; for (unsigned i = 0; i < NumSets; ++i ) { - OS << " \"" << RegBank.getRegSetAt(i).Name << "\",\n"; + const RegUnitSet &RegUnits = RegBank.getRegSetAt(i); + MaxRegUnitWeight = std::max(MaxRegUnitWeight, RegUnits.Weight); + OS << " \"" << RegUnits.Name << "\",\n"; } OS << " nullptr };\n" << " return PressureNameTable[Idx];\n" @@ -233,63 +249,54 @@ EmitRegUnitPressure(raw_ostream &OS, const CodeGenRegBank &RegBank, << "// This limit must be adjusted dynamically for reserved registers.\n" << "unsigned " << ClassName << "::\n" << "getRegPressureSetLimit(unsigned Idx) const {\n" - << " static const unsigned PressureLimitTable[] = {\n"; + << " static const " << getMinimalTypeForRange(MaxRegUnitWeight) + << " PressureLimitTable[] = {\n"; for (unsigned i = 0; i < NumSets; ++i ) { const RegUnitSet &RegUnits = RegBank.getRegSetAt(i); OS << " " << RegUnits.Weight << ", \t// " << i << ": " << RegUnits.Name << "\n"; } - OS << " 0 };\n" + OS << " };\n" << " return PressureLimitTable[Idx];\n" << "}\n\n"; + SequenceToOffsetTable<std::vector<int>> PSetsSeqs; + // This table may be larger than NumRCs if some register units needed a list // of unit sets that did not correspond to a register class. unsigned NumRCUnitSets = RegBank.getNumRegClassPressureSetLists(); - OS << "/// Table of pressure sets per register class or unit.\n" - << "static const int RCSetsTable[] = {\n "; - std::vector<unsigned> RCSetStarts(NumRCUnitSets); - for (unsigned i = 0, StartIdx = 0, e = NumRCUnitSets; i != e; ++i) { - RCSetStarts[i] = StartIdx; + std::vector<std::vector<int>> PSets(NumRCUnitSets); + + for (unsigned i = 0, e = NumRCUnitSets; i != e; ++i) { ArrayRef<unsigned> PSetIDs = RegBank.getRCPressureSetIDs(i); - std::vector<unsigned> PSets; - PSets.reserve(PSetIDs.size()); + PSets[i].reserve(PSetIDs.size()); for (ArrayRef<unsigned>::iterator PSetI = PSetIDs.begin(), PSetE = PSetIDs.end(); PSetI != PSetE; ++PSetI) { - PSets.push_back(RegBank.getRegPressureSet(*PSetI).Order); - } - std::sort(PSets.begin(), PSets.end()); - for (unsigned j = 0, e = PSets.size(); j < e; ++j) { - OS << PSets[j] << ", "; - ++StartIdx; + PSets[i].push_back(RegBank.getRegPressureSet(*PSetI).Order); } - OS << "-1, \t// #" << RCSetStarts[i] << " "; - if (i < NumRCs) - OS << RegBank.getRegClasses()[i]->getName(); - else { - OS << "inferred"; - for (ArrayRef<unsigned>::iterator PSetI = PSetIDs.begin(), - PSetE = PSetIDs.end(); PSetI != PSetE; ++PSetI) { - OS << "~" << RegBank.getRegSetAt(*PSetI).Name; - } - } - OS << "\n "; - ++StartIdx; + std::sort(PSets[i].begin(), PSets[i].end()); + PSetsSeqs.add(PSets[i]); } - OS << "-1 };\n\n"; + + PSetsSeqs.layout(); + + OS << "/// Table of pressure sets per register class or unit.\n" + << "static const int RCSetsTable[] = {\n"; + PSetsSeqs.emit(OS, printInt, "-1"); + OS << "};\n\n"; OS << "/// Get the dimensions of register pressure impacted by this " << "register class.\n" << "/// Returns a -1 terminated array of pressure set IDs\n" << "const int* " << ClassName << "::\n" << "getRegClassPressureSets(const TargetRegisterClass *RC) const {\n"; - OS << " static const unsigned RCSetStartTable[] = {\n "; + OS << " static const " << getMinimalTypeForRange(PSetsSeqs.size()-1) + << " RCSetStartTable[] = {\n "; for (unsigned i = 0, e = NumRCs; i != e; ++i) { - OS << RCSetStarts[i] << ","; + OS << PSetsSeqs.get(PSets[i]) << ","; } - OS << "0 };\n" - << " unsigned SetListStart = RCSetStartTable[RC->getID()];\n" - << " return &RCSetsTable[SetListStart];\n" + OS << "};\n" + << " return &RCSetsTable[RCSetStartTable[RC->getID()]];\n" << "}\n\n"; OS << "/// Get the dimensions of register pressure impacted by this " @@ -299,14 +306,15 @@ EmitRegUnitPressure(raw_ostream &OS, const CodeGenRegBank &RegBank, << "getRegUnitPressureSets(unsigned RegUnit) const {\n" << " assert(RegUnit < " << RegBank.getNumNativeRegUnits() << " && \"invalid register unit\");\n"; - OS << " static const unsigned RUSetStartTable[] = {\n "; + OS << " static const " << getMinimalTypeForRange(PSetsSeqs.size()-1) + << " RUSetStartTable[] = {\n "; for (unsigned UnitIdx = 0, UnitEnd = RegBank.getNumNativeRegUnits(); UnitIdx < UnitEnd; ++UnitIdx) { - OS << RCSetStarts[RegBank.getRegUnit(UnitIdx).RegClassUnitSetsIdx] << ","; + OS << PSetsSeqs.get(PSets[RegBank.getRegUnit(UnitIdx).RegClassUnitSetsIdx]) + << ","; } - OS << "0 };\n" - << " unsigned SetListStart = RUSetStartTable[RegUnit];\n" - << " return &RCSetsTable[SetListStart];\n" + OS << "};\n" + << " return &RCSetsTable[RUSetStartTable[RegUnit]];\n" << "}\n\n"; } @@ -616,15 +624,6 @@ static bool combine(const CodeGenSubRegIndex *Idx, return true; } -static const char *getMinimalTypeForRange(uint64_t Range) { - assert(Range < 0xFFFFFFFFULL && "Enum too large"); - if (Range > 0xFFFF) - return "uint32_t"; - if (Range > 0xFF) - return "uint16_t"; - return "uint8_t"; -} - void RegisterInfoEmitter::emitComposeSubRegIndices(raw_ostream &OS, CodeGenRegBank &RegBank, |