diff options
Diffstat (limited to 'utils/TableGen/SubtargetEmitter.cpp')
-rw-r--r-- | utils/TableGen/SubtargetEmitter.cpp | 76 |
1 files changed, 62 insertions, 14 deletions
diff --git a/utils/TableGen/SubtargetEmitter.cpp b/utils/TableGen/SubtargetEmitter.cpp index 0957fba9d3..5739a6af54 100644 --- a/utils/TableGen/SubtargetEmitter.cpp +++ b/utils/TableGen/SubtargetEmitter.cpp @@ -45,24 +45,28 @@ struct LessRecordFieldName { }; // -// FeatureEnumeration - Emit an enumeration of all the subtarget features. +// Enumeration - Emit the specified class as an enumeration. // -void SubtargetEmitter::FeatureEnumeration(std::ostream &OS) { - RecordList Features = Records.getAllDerivedDefinitions("SubtargetFeature"); - sort(Features.begin(), Features.end(), LessRecord()); +void SubtargetEmitter::Enumeration(std::ostream &OS, + const char *ClassName, + bool isBits) { + RecordList Defs = Records.getAllDerivedDefinitions(ClassName); + sort(Defs.begin(), Defs.end(), LessRecord()); int i = 0; OS << "enum {\n"; - for (RecordListIter RI = Features.begin(), E = Features.end(); RI != E;){ + for (RecordListIter RI = Defs.begin(), E = Defs.end(); RI != E;) { Record *R = *RI++; std::string Instance = R->getName(); OS << " " - << Instance - << " = " - << " 1 << " << i++ - << ((RI != E) ? ",\n" : "\n"); + << Instance; + if (isBits) { + OS << " = " + << " 1 << " << i++; + } + OS << ((RI != E) ? ",\n" : "\n"); } OS << "};\n"; @@ -76,8 +80,7 @@ void SubtargetEmitter::FeatureKeyValues(std::ostream &OS) { RecordList Features = Records.getAllDerivedDefinitions("SubtargetFeature"); sort(Features.begin(), Features.end(), LessRecord()); - OS << "\n" - << "// Sorted (by key) array of values for CPU features.\n" + OS << "// Sorted (by key) array of values for CPU features.\n" << "static llvm::SubtargetFeatureKV FeatureKV[] = {\n"; for (RecordListIter RI = Features.begin(), E = Features.end(); RI != E;) { Record *R = *RI++; @@ -105,8 +108,7 @@ void SubtargetEmitter::CPUKeyValues(std::ostream &OS) { RecordList Processors = Records.getAllDerivedDefinitions("Processor"); sort(Processors.begin(), Processors.end(), LessRecordFieldName()); - OS << "\n" - << "// Sorted (by key) array of values for CPU subtype.\n" + OS << "// Sorted (by key) array of values for CPU subtype.\n" << "static const llvm::SubtargetFeatureKV SubTypeKV[] = {\n"; for (RecordListIter RI = Processors.begin(), E = Processors.end(); RI != E;) { @@ -145,15 +147,61 @@ void SubtargetEmitter::CPUKeyValues(std::ostream &OS) { OS<<"};\n"; } +// +// ParseFeaturesFunction - Produces a subtarget specific function for parsing +// the subtarget features string. +// +void SubtargetEmitter::ParseFeaturesFunction(std::ostream &OS) { + RecordList Features = Records.getAllDerivedDefinitions("SubtargetFeature"); + sort(Features.begin(), Features.end(), LessRecord()); + + OS << "// ParseSubtargetFeatures - Parses features string setting specified\n" + "// subtarget options.\n" + "void llvm::"; + OS << Target; + OS << "Subtarget::ParseSubtargetFeatures(const std::string &FS,\n" + " const std::string &CPU) {\n" + " SubtargetFeatures Features(FS);\n" + " Features.setCPUIfNone(CPU);\n" + " uint32_t Bits = Features.getBits(SubTypeKV, SubTypeKVSize,\n" + " FeatureKV, FeatureKVSize);\n"; + + for (RecordListIter RI = Features.begin(), E = Features.end(); RI != E;) { + Record *R = *RI++; + std::string Instance = R->getName(); + std::string Name = R->getValueAsString("Name"); + std::string Type = R->getValueAsString("Type"); + std::string Attribute = R->getValueAsString("Attribute"); + + OS << " " << Attribute << " = (Bits & " << Instance << ") != 0;\n"; + } + OS << "}\n"; +} + // // SubtargetEmitter::run - Main subtarget enumeration emitter. // void SubtargetEmitter::run(std::ostream &OS) { + std::vector<Record*> Targets = Records.getAllDerivedDefinitions("Target"); + if (Targets.size() == 0) + throw std::string("ERROR: No 'Target' subclasses defined!"); + if (Targets.size() != 1) + throw std::string("ERROR: Multiple subclasses of Target defined!"); + Target = Targets[0]->getName(); + EmitSourceFileHeader("Subtarget Enumeration Source Fragment", OS); OS << "#include \"llvm/Target/SubtargetFeature.h\"\n\n"; - FeatureEnumeration(OS); + Enumeration(OS, "FuncUnit", true); + OS<<"\n"; + Enumeration(OS, "InstrItinClass", false); + OS<<"\n"; + Enumeration(OS, "SubtargetFeature", true); + OS<<"\n"; FeatureKeyValues(OS); + OS<<"\n"; CPUKeyValues(OS); + OS<<"\n"; + ParseFeaturesFunction(OS); } |