#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/Debug.h"
#include <algorithm>
-#include <set>
using namespace llvm;
-//
-// Convenience types.
-//
-typedef std::vector<Record*> RecordList;
-typedef std::vector<Record*>::iterator RecordListIter;
-
//
// Record sort by name function.
//
void SubtargetEmitter::Enumeration(std::ostream &OS,
const char *ClassName,
bool isBits) {
- RecordList Defs = Records.getAllDerivedDefinitions(ClassName);
- sort(Defs.begin(), Defs.end(), LessRecord());
+ // Get all records of class and sort
+ std::vector<Record*> DefList = Records.getAllDerivedDefinitions(ClassName);
+ std::sort(DefList.begin(), DefList.end(), LessRecord());
- int i = 0;
-
+ // Open enumeration
OS << "enum {\n";
- for (RecordListIter RI = Defs.begin(), E = Defs.end(); RI != E;) {
- Record *R = *RI++;
- std::string Instance = R->getName();
- OS << " "
- << Instance;
- if (isBits) {
- OS << " = "
- << " 1 << " << i++;
- }
- OS << ((RI != E) ? ",\n" : "\n");
+ // For each record
+ for (unsigned i = 0, N = DefList.size(); i < N;) {
+ // Next record
+ Record *Def = DefList[i];
+
+ // Get and emit name
+ std::string Name = Def->getName();
+ OS << " " << Name;
+
+ // If bit flags then emit expression (1 << i)
+ if (isBits) OS << " = " << " 1 << " << i;
+
+ // Depending on 'if more in the list' emit comma
+ if (++i < N) OS << ",";
+
+ OS << "\n";
}
+ // Close enumeration
OS << "};\n";
}
// line.
//
void SubtargetEmitter::FeatureKeyValues(std::ostream &OS) {
- RecordList Features = Records.getAllDerivedDefinitions("SubtargetFeature");
- sort(Features.begin(), Features.end(), LessRecord());
+ // Gather and sort all the features
+ std::vector<Record*> FeatureList =
+ Records.getAllDerivedDefinitions("SubtargetFeature");
+ std::sort(FeatureList.begin(), FeatureList.end(), LessRecord());
+ // Begin feature table
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++;
- std::string Instance = R->getName();
- std::string Name = R->getValueAsString("Name");
- std::string Desc = R->getValueAsString("Desc");
+
+ // For each feature
+ for (unsigned i = 0, N = FeatureList.size(); i < N; ++i) {
+ // Next feature
+ Record *Feature = FeatureList[i];
+
+ std::string Name = Feature->getName();
+ std::string CommandLineName = Feature->getValueAsString("Name");
+ std::string Desc = Feature->getValueAsString("Desc");
+
+ if (CommandLineName.empty()) continue;
+
+ // Emit as { "feature", "decription", feactureEnum }
OS << " { "
- << "\"" << Name << "\", "
+ << "\"" << CommandLineName << "\", "
<< "\"" << Desc << "\", "
- << Instance
- << ((RI != E) ? " },\n" : " }\n");
+ << Name
+ << " }";
+
+ // Depending on 'if more in the list' emit comma
+ if ((i + 1) < N) OS << ",";
+
+ OS << "\n";
}
+
+ // End feature table
OS << "};\n";
+ // Emit size of table
OS<<"\nenum {\n";
OS<<" FeatureKVSize = sizeof(FeatureKV)/sizeof(llvm::SubtargetFeatureKV)\n";
OS<<"};\n";
// line.
//
void SubtargetEmitter::CPUKeyValues(std::ostream &OS) {
- RecordList Processors = Records.getAllDerivedDefinitions("Processor");
- sort(Processors.begin(), Processors.end(), LessRecordFieldName());
+ // Gather and sort processor information
+ std::vector<Record*> ProcessorList =
+ Records.getAllDerivedDefinitions("Processor");
+ std::sort(ProcessorList.begin(), ProcessorList.end(), LessRecordFieldName());
+ // Begin processor table
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;) {
- Record *R = *RI++;
- std::string Name = R->getValueAsString("Name");
- Record *ProcItin = R->getValueAsDef("ProcItin");
- ListInit *Features = R->getValueAsListInit("Features");
- unsigned N = Features->getSize();
+
+ // For each processor
+ for (unsigned i = 0, N = ProcessorList.size(); i < N;) {
+ // Next processor
+ Record *Processor = ProcessorList[i];
+
+ std::string Name = Processor->getValueAsString("Name");
+ std::vector<Record*> FeatureList =
+ Processor->getValueAsListOfDefs("Features");
+
+ // Emit as { "cpu", "description", f1 | f2 | ... fn },
OS << " { "
<< "\"" << Name << "\", "
<< "\"Select the " << Name << " processor\", ";
-
- if (N == 0) {
+ if (FeatureList.empty()) {
OS << "0";
} else {
- for (unsigned i = 0; i < N; ) {
- if (DefInit *DI = dynamic_cast<DefInit*>(Features->getElement(i++))) {
- Record *Feature = DI->getDef();
- std::string Name = Feature->getName();
- OS << Name;
- if (i != N) OS << " | ";
- } else {
- throw "Feature: " + Name +
- " expected feature in processor feature list!";
- }
+ for (unsigned j = 0, M = FeatureList.size(); j < M;) {
+ Record *Feature = FeatureList[j];
+ std::string Name = Feature->getName();
+ OS << Name;
+ if (++j < M) OS << " | ";
}
}
- OS << ((RI != E) ? " },\n" : " }\n");
+ OS << " }";
+
+ // Depending on 'if more in the list' emit comma
+ if (++i < N) OS << ",";
+
+ OS << "\n";
}
+
+ // End processor table
OS << "};\n";
+ // Emit size of table
OS<<"\nenum {\n";
OS<<" SubTypeKVSize = sizeof(SubTypeKV)/sizeof(llvm::SubtargetFeatureKV)\n";
OS<<"};\n";
}
+//
+// CollectAllItinClasses - Gathers and enumerates all the itinerary classes.
+// Returns itinerary class count.
+//
+unsigned SubtargetEmitter::CollectAllItinClasses(std::ostream &OS,
+ std::map<std::string, unsigned> &ItinClassesMap) {
+ // Gather and sort all itinerary classes
+ std::vector<Record*> ItinClassList =
+ Records.getAllDerivedDefinitions("InstrItinClass");
+ std::sort(ItinClassList.begin(), ItinClassList.end(), LessRecord());
+
+ // For each itinerary class
+ unsigned N = ItinClassList.size();
+ for (unsigned i = 0; i < N; i++) {
+ // Next itinerary class
+ Record *ItinClass = ItinClassList[i];
+ // Get name of itinerary class
+ std::string Name = ItinClass->getName();
+ // Assign itinerary class a unique number
+ ItinClassesMap[Name] = i;
+ }
+
+ // Emit size of table
+ OS<<"\nenum {\n";
+ OS<<" ItinClassesSize = " << N << "\n";
+ OS<<"};\n";
+
+ // Return itinerary class count
+ return N;
+}
+
+//
+// FormItineraryString - Compose a string containing the data initialization
+// for the specified itinerary. N is the number of stages.
+//
+void SubtargetEmitter::FormItineraryString(Record *ItinData,
+ std::string &ItinString,
+ unsigned &NStages) {
+ // Get states list
+ std::vector<Record*> StageList = ItinData->getValueAsListOfDefs("Stages");
+
+ // For each stage
+ unsigned N = NStages = StageList.size();
+ for (unsigned i = 0; i < N;) {
+ // Next stage
+ Record *Stage = StageList[i];
+
+ // Form string as ,{ cycles, u1 | u2 | ... | un }
+ int Cycles = Stage->getValueAsInt("Cycles");
+ ItinString += " { " + itostr(Cycles) + ", ";
+
+ // Get unit list
+ std::vector<Record*> UnitList = Stage->getValueAsListOfDefs("Units");
+
+ // For each unit
+ for (unsigned j = 0, M = UnitList.size(); j < M;) {
+ // Next unit
+ Record *Unit = UnitList[j];
+
+ // Add name and bitwise or
+ ItinString += Unit->getName();
+ if (++j < M) ItinString += " | ";
+ }
+
+ // Close off stage
+ ItinString += " }";
+ if (++i < N) ItinString += ", ";
+ }
+}
+
+//
+// EmitStageData - Generate unique itinerary stages. Record itineraries for
+// processors.
+//
+void SubtargetEmitter::EmitStageData(std::ostream &OS,
+ unsigned NItinClasses,
+ std::map<std::string, unsigned> &ItinClassesMap,
+ std::vector<std::vector<InstrItinerary> > &ProcList) {
+ // Gather processor iteraries
+ std::vector<Record*> ProcItinList =
+ Records.getAllDerivedDefinitions("ProcessorItineraries");
+
+ // If just no itinerary then don't bother
+ if (ProcItinList.size() < 2) return;
+
+ // Begin stages table
+ OS << "static llvm::InstrStage Stages[] = {\n"
+ " { 0, 0 }, // No itinerary\n";
+
+ unsigned ItinEnum = 1;
+ std::map<std::string, unsigned> ItinMap;
+ for (unsigned i = 0, N = ProcItinList.size(); i < N; i++) {
+ // Next record
+ Record *Proc = ProcItinList[i];
+
+ // Get processor itinerary name
+ std::string Name = Proc->getName();
+
+ // Skip default
+ if (Name == "NoItineraries") continue;
+
+ // Create and expand processor itinerary to cover all itinerary classes
+ std::vector<InstrItinerary> ItinList;
+ ItinList.resize(NItinClasses);
+
+ // Get itinerary data list
+ std::vector<Record*> ItinDataList = Proc->getValueAsListOfDefs("IID");
+
+ // For each itinerary data
+ for (unsigned j = 0, M = ItinDataList.size(); j < M; j++) {
+ // Next itinerary data
+ Record *ItinData = ItinDataList[j];
+
+ // Get string and stage count
+ std::string ItinString;
+ unsigned NStages;
+ FormItineraryString(ItinData, ItinString, NStages);
+
+ // Check to see if it already exists
+ unsigned Find = ItinMap[ItinString];
+
+ // If new itinerary
+ if (Find == 0) {
+ // Emit as { cycles, u1 | u2 | ... | un }, // index
+ OS << ItinString << ", // " << ItinEnum << "\n";
+ // Record Itin class number
+ ItinMap[ItinString] = Find = ItinEnum++;
+ }
+
+ // Set up itinerary as location and location + stage count
+ InstrItinerary Intinerary = { Find, Find + NStages };
+
+ // Locate where to inject into processor itinerary table
+ std::string Name = ItinData->getValueAsDef("TheClass")->getName();
+ Find = ItinClassesMap[Name];
+
+ // Inject - empty slots will be 0, 0
+ ItinList[Find] = Intinerary;
+ }
+
+ // Add process itinerary to list
+ ProcList.push_back(ItinList);
+ }
+
+ // Closing stage
+ OS << " { 0, 0 } // End itinerary\n";
+ // End stages table
+ OS << "};\n";
+
+ // Emit size of table
+ OS<<"\nenum {\n";
+ OS<<" StagesSize = sizeof(Stages)/sizeof(llvm::InstrStage)\n";
+ OS<<"};\n";
+}
+
+//
+// EmitProcessorData - Generate data for processor itineraries.
+//
+void SubtargetEmitter::EmitProcessorData(std::ostream &OS,
+ std::vector<std::vector<InstrItinerary> > &ProcList) {
+ // Get an iterator for processor itinerary stages
+ std::vector<std::vector<InstrItinerary> >::iterator
+ ProcListIter = ProcList.begin();
+
+ // For each processor itinerary
+ std::vector<Record*> Itins =
+ Records.getAllDerivedDefinitions("ProcessorItineraries");
+ for (unsigned i = 0, N = Itins.size(); i < N; i++) {
+ // Next record
+ Record *Itin = Itins[i];
+
+ // Get processor itinerary name
+ std::string Name = Itin->getName();
+
+ // Skip default
+ if (Name == "NoItineraries") continue;
+
+ // Begin processor itinerary table
+ OS << "\n";
+ OS << "static llvm::InstrItinerary " << Name << "[] = {\n";
+
+ // For each itinerary class
+ std::vector<InstrItinerary> &ItinList = *ProcListIter++;
+ for (unsigned j = 0, M = ItinList.size(); j < M;) {
+ InstrItinerary &Intinerary = ItinList[j];
+
+ // Emit in the form of { first, last } // index
+ if (Intinerary.First == 0) {
+ OS << " { 0, 0 }";
+ } else {
+ OS << " { " << Intinerary.First << ", " << Intinerary.Last << " }";
+ }
+
+ // If more in list add comma
+ if (++j < M) OS << ",";
+
+ OS << " // " << (j - 1) << "\n";
+ }
+
+ // End processor itinerary table
+ OS << "};\n";
+ }
+}
+
+//
+// EmitProcessorLookup - generate cpu name to itinerary lookup table.
+//
+void SubtargetEmitter::EmitProcessorLookup(std::ostream &OS) {
+ // Gather and sort processor information
+ std::vector<Record*> ProcessorList =
+ Records.getAllDerivedDefinitions("Processor");
+ std::sort(ProcessorList.begin(), ProcessorList.end(), LessRecordFieldName());
+
+ // Begin processor table
+ OS << "\n";
+ OS << "// Sorted (by key) array of itineraries for CPU subtype.\n"
+ << "static const llvm::SubtargetInfoKV ProcItinKV[] = {\n";
+
+ // For each processor
+ for (unsigned i = 0, N = ProcessorList.size(); i < N;) {
+ // Next processor
+ Record *Processor = ProcessorList[i];
+
+ std::string Name = Processor->getValueAsString("Name");
+ std::string ProcItin = Processor->getValueAsDef("ProcItin")->getName();
+
+ // Emit as { "cpu", procinit },
+ OS << " { "
+ << "\"" << Name << "\", "
+ << "(void *)&" << ProcItin;
+
+ OS << " }";
+
+ // Depending on ''if more in the list'' emit comma
+ if (++i < N) OS << ",";
+
+ OS << "\n";
+ }
+
+ // End processor table
+ OS << "};\n";
+
+ // Emit size of table
+ OS<<"\nenum {\n";
+ OS<<" ProcItinKVSize = sizeof(ProcItinKV)/"
+ "sizeof(llvm::SubtargetInfoKV)\n";
+ OS<<"};\n";
+}
+
+//
+// EmitData - Emits all stages and itineries, folding common patterns.
+//
+void SubtargetEmitter::EmitData(std::ostream &OS) {
+ std::map<std::string, unsigned> ItinClassesMap;
+ std::vector<std::vector<InstrItinerary> > ProcList;
+
+ // Enumerate all the itinerary classes
+ unsigned NItinClasses = CollectAllItinClasses(OS, ItinClassesMap);
+ // Make sure the rest is worth the effort
+ HasItineraries = NItinClasses != 1; // Ignore NoItinerary.
+
+ if (HasItineraries) {
+ // Emit the stage data
+ EmitStageData(OS, NItinClasses, ItinClassesMap, ProcList);
+ // Emit the processor itinerary data
+ EmitProcessorData(OS, ProcList);
+ // Emit the processor lookup data
+ EmitProcessorLookup(OS);
+ }
+}
+
//
// 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());
+ 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"
" uint32_t Bits = Features.getBits(SubTypeKV, SubTypeKVSize,\n"
" FeatureKV, FeatureKVSize);\n";
- for (RecordListIter RI = Features.begin(), E = Features.end(); RI != E;) {
- Record *R = *RI++;
+ for (unsigned i = 0; i < Features.size(); i++) {
+ // Next record
+ Record *R = Features[i];
std::string Instance = R->getName();
std::string Name = R->getValueAsString("Name");
- std::string Type = R->getValueAsString("Type");
+ std::string Value = R->getValueAsString("Value");
std::string Attribute = R->getValueAsString("Attribute");
-
- OS << " " << Attribute << " = (Bits & " << Instance << ") != 0;\n";
+
+ OS << " if ((Bits & " << Instance << ") != 0) "
+ << Attribute << " = " << Value << ";\n";
+ }
+
+ if (HasItineraries) {
+ OS << "\n"
+ << " InstrItinerary *Itinerary = (InstrItinerary *)"
+ "Features.getInfo(ProcItinKV, ProcItinKVSize);\n"
+ " InstrItins = InstrItineraryData(Stages, Itinerary);\n";
}
+
OS << "}\n";
}
EmitSourceFileHeader("Subtarget Enumeration Source Fragment", OS);
- OS << "#include \"llvm/Target/SubtargetFeature.h\"\n\n";
+ OS << "#include \"llvm/Target/SubtargetFeature.h\"\n";
+ OS << "#include \"llvm/Target/TargetInstrItineraries.h\"\n\n";
Enumeration(OS, "FuncUnit", true);
OS<<"\n";
- Enumeration(OS, "InstrItinClass", false);
- OS<<"\n";
+// Enumeration(OS, "InstrItinClass", false);
+// OS<<"\n";
Enumeration(OS, "SubtargetFeature", true);
OS<<"\n";
FeatureKeyValues(OS);
OS<<"\n";
CPUKeyValues(OS);
OS<<"\n";
+ EmitData(OS);
+ OS<<"\n";
ParseFeaturesFunction(OS);
}
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