#include "SubtargetEmitter.h"
#include "CodeGenTarget.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/Debug.h"
#include <algorithm>
std::vector<Record*> DefList = Records.getAllDerivedDefinitions(ClassName);
std::sort(DefList.begin(), DefList.end(), LessRecord());
+ unsigned N = DefList.size();
+ if (N == 0)
+ return;
+ if (N > 64) {
+ errs() << "Too many (> 64) subtarget features!\n";
+ exit(1);
+ }
+
+ OS << "namespace " << Target << " {\n";
+
// Open enumeration
OS << "enum {\n";
// For each record
- for (unsigned i = 0, N = DefList.size(); i < N;) {
+ for (unsigned i = 0; i < N;) {
// Next record
Record *Def = DefList[i];
OS << " " << Def->getName();
// If bit flags then emit expression (1 << i)
- if (isBits) OS << " = " << " 1 << " << i;
+ if (isBits) OS << " = " << " 1ULL << " << i;
// Depending on 'if more in the list' emit comma
if (++i < N) OS << ",";
// Close enumeration
OS << "};\n";
+
+ OS << "}\n";
}
//
// FeatureKeyValues - Emit data of all the subtarget features. Used by the
// command line.
//
-void SubtargetEmitter::FeatureKeyValues(raw_ostream &OS) {
+unsigned SubtargetEmitter::FeatureKeyValues(raw_ostream &OS) {
// Gather and sort all the features
std::vector<Record*> FeatureList =
Records.getAllDerivedDefinitions("SubtargetFeature");
+
+ if (FeatureList.empty())
+ return 0;
+
std::sort(FeatureList.begin(), FeatureList.end(), LessRecordFieldName());
// Begin feature table
OS << "// Sorted (by key) array of values for CPU features.\n"
- << "static const llvm::SubtargetFeatureKV FeatureKV[] = {\n";
+ << "extern const llvm::SubtargetFeatureKV " << Target
+ << "FeatureKV[] = {\n";
// For each feature
+ unsigned NumFeatures = 0;
for (unsigned i = 0, N = FeatureList.size(); i < N; ++i) {
// Next feature
Record *Feature = FeatureList[i];
OS << " { "
<< "\"" << CommandLineName << "\", "
<< "\"" << Desc << "\", "
- << Name << ", ";
+ << Target << "::" << Name << ", ";
const std::vector<Record*> &ImpliesList =
Feature->getValueAsListOfDefs("Implies");
if (ImpliesList.empty()) {
- OS << "0";
+ OS << "0ULL";
} else {
for (unsigned j = 0, M = ImpliesList.size(); j < M;) {
- OS << ImpliesList[j]->getName();
+ OS << Target << "::" << ImpliesList[j]->getName();
if (++j < M) OS << " | ";
}
}
OS << " }";
+ ++NumFeatures;
// Depending on 'if more in the list' emit comma
if ((i + 1) < N) OS << ",";
// End feature table
OS << "};\n";
- // Emit size of table
- OS<<"\nenum {\n";
- OS<<" FeatureKVSize = sizeof(FeatureKV)/sizeof(llvm::SubtargetFeatureKV)\n";
- OS<<"};\n";
+ return NumFeatures;
}
//
// CPUKeyValues - Emit data of all the subtarget processors. Used by command
// line.
//
-void SubtargetEmitter::CPUKeyValues(raw_ostream &OS) {
+unsigned SubtargetEmitter::CPUKeyValues(raw_ostream &OS) {
// Gather and sort processor information
std::vector<Record*> ProcessorList =
Records.getAllDerivedDefinitions("Processor");
// Begin processor table
OS << "// Sorted (by key) array of values for CPU subtype.\n"
- << "static const llvm::SubtargetFeatureKV SubTypeKV[] = {\n";
+ << "extern const llvm::SubtargetFeatureKV " << Target
+ << "SubTypeKV[] = {\n";
// For each processor
for (unsigned i = 0, N = ProcessorList.size(); i < N;) {
<< "\"Select the " << Name << " processor\", ";
if (FeatureList.empty()) {
- OS << "0";
+ OS << "0ULL";
} else {
for (unsigned j = 0, M = FeatureList.size(); j < M;) {
- OS << FeatureList[j]->getName();
+ OS << Target << "::" << FeatureList[j]->getName();
if (++j < M) OS << " | ";
}
}
// The "0" is for the "implies" section of this data structure.
- OS << ", 0 }";
+ OS << ", 0ULL }";
// Depending on 'if more in the list' emit comma
if (++i < N) OS << ",";
// End processor table
OS << "};\n";
- // Emit size of table
- OS<<"\nenum {\n";
- OS<<" SubTypeKVSize = sizeof(SubTypeKV)/sizeof(llvm::SubtargetFeatureKV)\n";
- OS<<"};\n";
+ return ProcessorList.size();
}
//
ItinClassesMap[ItinClass->getName()] = i;
}
- // Emit size of table
- OS<<"\nenum {\n";
- OS<<" ItinClassesSize = " << N << "\n";
- OS<<"};\n";
-
// Return itinerary class count
return N;
}
}
// Begin stages table
- std::string StageTable = "\nstatic const llvm::InstrStage Stages[] = {\n";
+ std::string StageTable = "\nextern const llvm::InstrStage " + Target +
+ "Stages[] = {\n";
StageTable += " { 0, 0, 0, llvm::InstrStage::Required }, // No itinerary\n";
// Begin operand cycle table
- std::string OperandCycleTable = "static const unsigned OperandCycles[] = {\n";
+ std::string OperandCycleTable = "extern const unsigned " + Target +
+ "OperandCycles[] = {\n";
OperandCycleTable += " 0, // No itinerary\n";
// Begin pipeline bypass table
- std::string BypassTable = "static const unsigned ForwardingPathes[] = {\n";
+ std::string BypassTable = "extern const unsigned " + Target +
+ "ForwardingPathes[] = {\n";
BypassTable += " 0, // No itinerary\n";
unsigned StageCount = 1, OperandCycleCount = 1;
OS << StageTable;
OS << OperandCycleTable;
OS << BypassTable;
-
- // Emit size of tables
- OS<<"\nenum {\n";
- OS<<" StagesSize = sizeof(Stages)/sizeof(llvm::InstrStage),\n";
- OS<<" OperandCyclesSize = sizeof(OperandCycles)/sizeof(unsigned)\n";
- OS<<"};\n";
}
//
// Begin processor table
OS << "\n";
OS << "// Sorted (by key) array of itineraries for CPU subtype.\n"
- << "static const llvm::SubtargetInfoKV ProcItinKV[] = {\n";
+ << "extern const llvm::SubtargetInfoKV "
+ << Target << "ProcItinKV[] = {\n";
// For each processor
for (unsigned i = 0, N = ProcessorList.size(); i < N;) {
// End processor table
OS << "};\n";
-
- // Emit size of table
- OS<<"\nenum {\n";
- OS<<" ProcItinKVSize = sizeof(ProcItinKV)/"
- "sizeof(llvm::SubtargetInfoKV)\n";
- OS<<"};\n";
}
//
// ParseFeaturesFunction - Produces a subtarget specific function for parsing
// the subtarget features string.
//
-void SubtargetEmitter::ParseFeaturesFunction(raw_ostream &OS) {
+void SubtargetEmitter::ParseFeaturesFunction(raw_ostream &OS,
+ unsigned NumFeatures,
+ unsigned NumProcs) {
std::vector<Record*> Features =
Records.getAllDerivedDefinitions("SubtargetFeature");
std::sort(Features.begin(), Features.end(), LessRecord());
OS << "// ParseSubtargetFeatures - Parses features string setting specified\n"
<< "// subtarget options.\n"
- << "std::string llvm::";
+ << "void llvm::";
OS << Target;
- OS << "Subtarget::ParseSubtargetFeatures(const std::string &FS,\n"
- << " const std::string &CPU) {\n"
+ OS << "Subtarget::ParseSubtargetFeatures(StringRef CPU, StringRef FS) {\n"
<< " DEBUG(dbgs() << \"\\nFeatures:\" << FS);\n"
- << " DEBUG(dbgs() << \"\\nCPU:\" << CPU);\n"
- << " SubtargetFeatures Features(FS);\n"
- << " Features.setCPUIfNone(CPU);\n"
- << " uint32_t Bits = Features.getBits(SubTypeKV, SubTypeKVSize,\n"
- << " FeatureKV, FeatureKVSize);\n";
+ << " DEBUG(dbgs() << \"\\nCPU:\" << CPU);\n";
+
+ if (Features.empty()) {
+ OS << "}\n";
+ return;
+ }
+
+ OS << " uint64_t Bits = ReInitMCSubtargetInfo(CPU, FS);\n";
for (unsigned i = 0; i < Features.size(); i++) {
// Next record
const std::string &Attribute = R->getValueAsString("Attribute");
if (Value=="true" || Value=="false")
- OS << " if ((Bits & " << Instance << ") != 0) "
+ OS << " if ((Bits & " << Target << "::"
+ << Instance << ") != 0) "
<< Attribute << " = " << Value << ";\n";
else
- OS << " if ((Bits & " << Instance << ") != 0 && " << Attribute <<
- " < " << Value << ") " << Attribute << " = " << Value << ";\n";
- }
-
- if (HasItineraries) {
- OS << "\n"
- << " InstrItinerary *Itinerary = (InstrItinerary *)"
- << "Features.getInfo(ProcItinKV, ProcItinKVSize);\n"
- << " InstrItins = InstrItineraryData(Stages, OperandCycles, "
- << "ForwardingPathes, Itinerary);\n";
+ OS << " if ((Bits & " << Target << "::"
+ << Instance << ") != 0 && "
+ << Attribute << " < " << Value << ") "
+ << Attribute << " = " << Value << ";\n";
}
- OS << " return Features.getCPU();\n"
- << "}\n";
+ OS << "}\n";
}
//
EmitSourceFileHeader("Subtarget Enumeration Source Fragment", OS);
- OS << "#include \"llvm/Support/Debug.h\"\n";
- OS << "#include \"llvm/Support/raw_ostream.h\"\n";
- OS << "#include \"llvm/Target/SubtargetFeature.h\"\n";
- OS << "#include \"llvm/Target/TargetInstrItineraries.h\"\n\n";
+ OS << "\n#ifdef GET_SUBTARGETINFO_ENUM\n";
+ OS << "#undef GET_SUBTARGETINFO_ENUM\n";
-// Enumeration(OS, "FuncUnit", true);
-// OS<<"\n";
-// Enumeration(OS, "InstrItinClass", false);
-// OS<<"\n";
+ OS << "namespace llvm {\n";
Enumeration(OS, "SubtargetFeature", true);
- OS<<"\n";
- FeatureKeyValues(OS);
- OS<<"\n";
- CPUKeyValues(OS);
- OS<<"\n";
+ OS << "} // End llvm namespace \n";
+ OS << "#endif // GET_SUBTARGETINFO_ENUM\n\n";
+
+ OS << "\n#ifdef GET_SUBTARGETINFO_MC_DESC\n";
+ OS << "#undef GET_SUBTARGETINFO_MC_DESC\n";
+
+ OS << "namespace llvm {\n";
+#if 0
+ OS << "namespace {\n";
+#endif
+ unsigned NumFeatures = FeatureKeyValues(OS);
+ OS << "\n";
+ unsigned NumProcs = CPUKeyValues(OS);
+ OS << "\n";
EmitData(OS);
- OS<<"\n";
- ParseFeaturesFunction(OS);
+ OS << "\n";
+#if 0
+ OS << "}\n";
+#endif
+
+ // MCInstrInfo initialization routine.
+ OS << "static inline void Init" << Target
+ << "MCSubtargetInfo(MCSubtargetInfo *II, "
+ << "StringRef TT, StringRef CPU, StringRef FS) {\n";
+ OS << " II->InitMCSubtargetInfo(TT, CPU, FS, ";
+ if (NumFeatures)
+ OS << Target << "FeatureKV, ";
+ else
+ OS << "0, ";
+ if (NumProcs)
+ OS << Target << "SubTypeKV, ";
+ else
+ OS << "0, ";
+ if (HasItineraries) {
+ OS << Target << "ProcItinKV, "
+ << Target << "Stages, "
+ << Target << "OperandCycles, "
+ << Target << "ForwardingPathes, ";
+ } else
+ OS << "0, 0, 0, 0, ";
+ OS << NumFeatures << ", " << NumProcs << ");\n}\n\n";
+
+ OS << "} // End llvm namespace \n";
+
+ OS << "#endif // GET_SUBTARGETINFO_MC_DESC\n\n";
+
+ OS << "\n#ifdef GET_SUBTARGETINFO_TARGET_DESC\n";
+ OS << "#undef GET_SUBTARGETINFO_TARGET_DESC\n";
+
+ OS << "#include \"llvm/Support/Debug.h\"\n";
+ OS << "#include \"llvm/Support/raw_ostream.h\"\n";
+ ParseFeaturesFunction(OS, NumFeatures, NumProcs);
+
+ OS << "#endif // GET_SUBTARGETINFO_TARGET_DESC\n\n";
+
+ // Create a TargetSubtargetInfo subclass to hide the MC layer initialization.
+ OS << "\n#ifdef GET_SUBTARGETINFO_HEADER\n";
+ OS << "#undef GET_SUBTARGETINFO_HEADER\n";
+
+ std::string ClassName = Target + "GenSubtargetInfo";
+ OS << "namespace llvm {\n";
+ OS << "class DFAPacketizer;\n";
+ OS << "struct " << ClassName << " : public TargetSubtargetInfo {\n"
+ << " explicit " << ClassName << "(StringRef TT, StringRef CPU, "
+ << "StringRef FS);\n"
+ << "public:\n"
+ << " DFAPacketizer* createDFAPacketizer(const InstrItineraryData* IID)"
+ << " const;\n"
+ << "};\n";
+ OS << "} // End llvm namespace \n";
+
+ OS << "#endif // GET_SUBTARGETINFO_HEADER\n\n";
+
+ OS << "\n#ifdef GET_SUBTARGETINFO_CTOR\n";
+ OS << "#undef GET_SUBTARGETINFO_CTOR\n";
+
+ OS << "namespace llvm {\n";
+ OS << "extern const llvm::SubtargetFeatureKV " << Target << "FeatureKV[];\n";
+ OS << "extern const llvm::SubtargetFeatureKV " << Target << "SubTypeKV[];\n";
+ if (HasItineraries) {
+ OS << "extern const llvm::SubtargetInfoKV " << Target << "ProcItinKV[];\n";
+ OS << "extern const llvm::InstrStage " << Target << "Stages[];\n";
+ OS << "extern const unsigned " << Target << "OperandCycles[];\n";
+ OS << "extern const unsigned " << Target << "ForwardingPathes[];\n";
+ }
+
+ OS << ClassName << "::" << ClassName << "(StringRef TT, StringRef CPU, "
+ << "StringRef FS)\n"
+ << " : TargetSubtargetInfo() {\n"
+ << " InitMCSubtargetInfo(TT, CPU, FS, ";
+ if (NumFeatures)
+ OS << Target << "FeatureKV, ";
+ else
+ OS << "0, ";
+ if (NumProcs)
+ OS << Target << "SubTypeKV, ";
+ else
+ OS << "0, ";
+ if (HasItineraries) {
+ OS << Target << "ProcItinKV, "
+ << Target << "Stages, "
+ << Target << "OperandCycles, "
+ << Target << "ForwardingPathes, ";
+ } else
+ OS << "0, 0, 0, 0, ";
+ OS << NumFeatures << ", " << NumProcs << ");\n}\n\n";
+ OS << "} // End llvm namespace \n";
+
+ OS << "#endif // GET_SUBTARGETINFO_CTOR\n\n";
}
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