//
// The LLVM Compiler Infrastructure
//
-// This file was developed by James M. Laskey and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include <algorithm>
using namespace llvm;
-//
-// Record sort by name function.
-//
-struct LessRecord {
- bool operator()(const Record *Rec1, const Record *Rec2) const {
- return Rec1->getName() < Rec2->getName();
- }
-};
-
-//
-// Record sort by field "Name" function.
-//
-struct LessRecordFieldName {
- bool operator()(const Record *Rec1, const Record *Rec2) const {
- return Rec1->getValueAsString("Name") < Rec2->getValueAsString("Name");
- }
-};
-
//
// Enumeration - Emit the specified class as an enumeration.
//
-void SubtargetEmitter::Enumeration(std::ostream &OS,
+void SubtargetEmitter::Enumeration(raw_ostream &OS,
const char *ClassName,
bool isBits) {
// Get all records of class and sort
Record *Def = DefList[i];
// Get and emit name
- std::string Name = Def->getName();
- OS << " " << Name;
+ OS << " " << Def->getName();
// If bit flags then emit expression (1 << i)
if (isBits) OS << " = " << " 1 << " << i;
}
//
-// FeatureKeyValues - Emit data of all the subtarget features. Used by command
-// line.
+// FeatureKeyValues - Emit data of all the subtarget features. Used by the
+// command line.
//
-void SubtargetEmitter::FeatureKeyValues(std::ostream &OS) {
+void SubtargetEmitter::FeatureKeyValues(raw_ostream &OS) {
// Gather and sort all the features
std::vector<Record*> FeatureList =
Records.getAllDerivedDefinitions("SubtargetFeature");
- std::sort(FeatureList.begin(), FeatureList.end(), LessRecord());
+ std::sort(FeatureList.begin(), FeatureList.end(), LessRecordFieldName());
// Begin feature table
OS << "// Sorted (by key) array of values for CPU features.\n"
- << "static llvm::SubtargetFeatureKV FeatureKV[] = {\n";
+ << "static const llvm::SubtargetFeatureKV FeatureKV[] = {\n";
// For each feature
- for (unsigned i = 0, N = FeatureList.size(); i < N;) {
+ 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");
+ const std::string &Name = Feature->getName();
+ const std::string &CommandLineName = Feature->getValueAsString("Name");
+ const std::string &Desc = Feature->getValueAsString("Desc");
+
+ if (CommandLineName.empty()) continue;
- // Emit as { "feature", "decription", feactureEnum }
+ // Emit as { "feature", "description", featureEnum, i1 | i2 | ... | in }
OS << " { "
<< "\"" << CommandLineName << "\", "
<< "\"" << Desc << "\", "
- << Name
- << " }";
+ << Name << ", ";
+
+ const std::vector<Record*> &ImpliesList =
+ Feature->getValueAsListOfDefs("Implies");
+
+ if (ImpliesList.empty()) {
+ OS << "0";
+ } else {
+ for (unsigned j = 0, M = ImpliesList.size(); j < M;) {
+ OS << ImpliesList[j]->getName();
+ if (++j < M) OS << " | ";
+ }
+ }
+
+ OS << " }";
// Depending on 'if more in the list' emit comma
- if (++i < N) OS << ",";
+ if ((i + 1) < N) OS << ",";
OS << "\n";
}
// CPUKeyValues - Emit data of all the subtarget processors. Used by command
// line.
//
-void SubtargetEmitter::CPUKeyValues(std::ostream &OS) {
+void SubtargetEmitter::CPUKeyValues(raw_ostream &OS) {
// Gather and sort processor information
std::vector<Record*> ProcessorList =
Records.getAllDerivedDefinitions("Processor");
// Next processor
Record *Processor = ProcessorList[i];
- std::string Name = Processor->getValueAsString("Name");
- std::vector<Record*> FeatureList =
+ const std::string &Name = Processor->getValueAsString("Name");
+ const std::vector<Record*> &FeatureList =
Processor->getValueAsListOfDefs("Features");
// Emit as { "cpu", "description", f1 | f2 | ... fn },
OS << "0";
} else {
for (unsigned j = 0, M = FeatureList.size(); j < M;) {
- Record *Feature = FeatureList[j];
- std::string Name = Feature->getName();
- OS << Name;
+ OS << FeatureList[j]->getName();
if (++j < M) OS << " | ";
}
}
- OS << " }";
+ // The "0" is for the "implies" section of this data structure.
+ OS << ", 0 }";
// Depending on 'if more in the list' emit comma
if (++i < N) OS << ",";
// CollectAllItinClasses - Gathers and enumerates all the itinerary classes.
// Returns itinerary class count.
//
-unsigned SubtargetEmitter::CollectAllItinClasses(std::ostream &OS,
+unsigned SubtargetEmitter::CollectAllItinClasses(raw_ostream &OS,
std::map<std::string, unsigned> &ItinClassesMap) {
// Gather and sort all itinerary classes
std::vector<Record*> ItinClassList =
unsigned N = ItinClassList.size();
for (unsigned i = 0; i < N; i++) {
// Next itinerary class
- Record *ItinClass = ItinClassList[i];
+ const Record *ItinClass = ItinClassList[i];
// Get name of itinerary class
- std::string Name = ItinClass->getName();
// Assign itinerary class a unique number
- ItinClassesMap[Name] = i;
+ ItinClassesMap[ItinClass->getName()] = i;
}
// Emit size of table
}
//
-// FormItineraryString - Compose a string containing the data initialization
-// for the specified itinerary. N is the number of stages.
+// FormItineraryStageString - Compose a string containing the stage
+// data initialization for the specified itinerary. N is the number
+// of stages.
//
-void SubtargetEmitter::FormItineraryString(Record *ItinData,
- std::string &ItinString,
- unsigned &NStages) {
+void SubtargetEmitter::FormItineraryStageString(const std::string &Name,
+ Record *ItinData,
+ std::string &ItinString,
+ unsigned &NStages) {
// Get states list
- std::vector<Record*> StageList = ItinData->getValueAsListOfDefs("Stages");
+ const std::vector<Record*> &StageList =
+ ItinData->getValueAsListOfDefs("Stages");
// For each stage
unsigned N = NStages = StageList.size();
- for (unsigned i = 0; i < N; i++) {
+ for (unsigned i = 0; i < N;) {
// Next stage
- Record *Stage = StageList[i];
+ const Record *Stage = StageList[i];
- // Form string as ,{ cycles, u1 | u2 | ... | un }
+ // Form string as ,{ cycles, u1 | u2 | ... | un, timeinc, kind }
int Cycles = Stage->getValueAsInt("Cycles");
ItinString += " { " + itostr(Cycles) + ", ";
// Get unit list
- std::vector<Record*> UnitList = Stage->getValueAsListOfDefs("Units");
+ const 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();
+ ItinString += Name + "FU::" + UnitList[j]->getName();
if (++j < M) ItinString += " | ";
}
+ int TimeInc = Stage->getValueAsInt("TimeInc");
+ ItinString += ", " + itostr(TimeInc);
+
+ int Kind = Stage->getValueAsInt("Kind");
+ ItinString += ", (llvm::InstrStage::ReservationKinds)" + itostr(Kind);
+
// Close off stage
ItinString += " }";
+ if (++i < N) ItinString += ", ";
+ }
+}
+
+//
+// FormItineraryOperandCycleString - Compose a string containing the
+// operand cycle initialization for the specified itinerary. N is the
+// number of operands that has cycles specified.
+//
+void SubtargetEmitter::FormItineraryOperandCycleString(Record *ItinData,
+ std::string &ItinString, unsigned &NOperandCycles) {
+ // Get operand cycle list
+ const std::vector<int64_t> &OperandCycleList =
+ ItinData->getValueAsListOfInts("OperandCycles");
+
+ // For each operand cycle
+ unsigned N = NOperandCycles = OperandCycleList.size();
+ for (unsigned i = 0; i < N;) {
+ // Next operand cycle
+ const int OCycle = OperandCycleList[i];
+
+ ItinString += " " + itostr(OCycle);
+ if (++i < N) ItinString += ", ";
}
}
//
-// EmitStageData - Generate unique itinerary stages. Record itineraries for
-// processors.
+// EmitStageAndOperandCycleData - Generate unique itinerary stages and
+// operand cycle tables. Record itineraries for processors.
//
-void SubtargetEmitter::EmitStageData(std::ostream &OS,
+void SubtargetEmitter::EmitStageAndOperandCycleData(raw_ostream &OS,
unsigned NItinClasses,
std::map<std::string, unsigned> &ItinClassesMap,
std::vector<std::vector<InstrItinerary> > &ProcList) {
// If just no itinerary then don't bother
if (ProcItinList.size() < 2) return;
+ // Emit functional units for all the itineraries.
+ for (unsigned i = 0, N = ProcItinList.size(); i < N; ++i) {
+ // Next record
+ Record *Proc = ProcItinList[i];
+
+ std::vector<Record*> FUs = Proc->getValueAsListOfDefs("FU");
+ if (FUs.empty())
+ continue;
+
+ const std::string &Name = Proc->getName();
+ OS << "\n// Functional units for itineraries \"" << Name << "\"\n"
+ << "namespace " << Name << "FU {\n";
+
+ for (unsigned j = 0, FUN = FUs.size(); j < FUN; ++j)
+ OS << " const unsigned " << FUs[j]->getName()
+ << " = 1 << " << j << ";\n";
+
+ OS << "}\n";
+ }
+
// Begin stages table
- OS << "static llvm::InstrStage Stages[] = {\n"
- " { 0, 0 }, // No itinerary\n";
+ std::string StageTable = "\nstatic const llvm::InstrStage Stages[] = {\n";
+ StageTable += " { 0, 0, 0, llvm::InstrStage::Required }, // No itinerary\n";
- unsigned ItinEnum = 1;
- std::map<std::string, unsigned> ItinMap;
+ // Begin operand cycle table
+ std::string OperandCycleTable = "static const unsigned OperandCycles[] = {\n";
+ OperandCycleTable += " 0, // No itinerary\n";
+
+ unsigned StageCount = 1, OperandCycleCount = 1;
+ unsigned ItinStageEnum = 1, ItinOperandCycleEnum = 1;
+ std::map<std::string, unsigned> ItinStageMap, ItinOperandCycleMap;
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();
+ const std::string &Name = Proc->getName();
// Skip default
if (Name == "NoItineraries") continue;
Record *ItinData = ItinDataList[j];
// Get string and stage count
- std::string ItinString;
+ std::string ItinStageString;
unsigned NStages;
- FormItineraryString(ItinData, ItinString, NStages);
-
- // Check to see if it already exists
- unsigned Find = ItinMap[ItinString];
+ FormItineraryStageString(Name, ItinData, ItinStageString, NStages);
+
+ // Get string and operand cycle count
+ std::string ItinOperandCycleString;
+ unsigned NOperandCycles;
+ FormItineraryOperandCycleString(ItinData, ItinOperandCycleString,
+ NOperandCycles);
+
+ // Check to see if stage already exists and create if it doesn't
+ unsigned FindStage = 0;
+ if (NStages > 0) {
+ FindStage = ItinStageMap[ItinStageString];
+ if (FindStage == 0) {
+ // Emit as { cycles, u1 | u2 | ... | un, timeinc }, // index
+ StageTable += ItinStageString + ", // " + itostr(ItinStageEnum) + "\n";
+ // Record Itin class number.
+ ItinStageMap[ItinStageString] = FindStage = StageCount;
+ StageCount += NStages;
+ ItinStageEnum++;
+ }
+ }
- // 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++;
+ // Check to see if operand cycle already exists and create if it doesn't
+ unsigned FindOperandCycle = 0;
+ if (NOperandCycles > 0) {
+ FindOperandCycle = ItinOperandCycleMap[ItinOperandCycleString];
+ if (FindOperandCycle == 0) {
+ // Emit as cycle, // index
+ OperandCycleTable += ItinOperandCycleString + ", // " +
+ itostr(ItinOperandCycleEnum) + "\n";
+ // Record Itin class number.
+ ItinOperandCycleMap[ItinOperandCycleString] =
+ FindOperandCycle = OperandCycleCount;
+ OperandCycleCount += NOperandCycles;
+ ItinOperandCycleEnum++;
+ }
}
// Set up itinerary as location and location + stage count
- InstrItinerary Intinerary = { Find, Find + NStages };
+ InstrItinerary Intinerary = { FindStage, FindStage + NStages,
+ FindOperandCycle, FindOperandCycle + NOperandCycles};
// Locate where to inject into processor itinerary table
- std::string Name = ItinData->getValueAsDef("TheClass")->getName();
- Find = ItinClassesMap[Name];
+ const std::string &Name = ItinData->getValueAsDef("TheClass")->getName();
+ unsigned Find = ItinClassesMap[Name];
// Inject - empty slots will be 0, 0
ItinList[Find] = Intinerary;
}
// Closing stage
- OS << " { 0, 0 } // End itinerary\n";
- // End stages table
- OS << "};\n";
+ StageTable += " { 0, 0, 0, llvm::InstrStage::Required } // End itinerary\n";
+ StageTable += "};\n";
+
+ // Closing operand cycles
+ OperandCycleTable += " 0 // End itinerary\n";
+ OperandCycleTable += "};\n";
+
+ // Emit tables.
+ OS << StageTable;
+ OS << OperandCycleTable;
- // Emit size of table
+ // Emit size of tables
OS<<"\nenum {\n";
- OS<<" StagesSize = sizeof(Stages)/sizeof(llvm::InstrStage)\n";
+ OS<<" StagesSize = sizeof(Stages)/sizeof(llvm::InstrStage),\n";
+ OS<<" OperandCyclesSize = sizeof(OperandCycles)/sizeof(unsigned)\n";
OS<<"};\n";
}
//
// EmitProcessorData - Generate data for processor itineraries.
//
-void SubtargetEmitter::EmitProcessorData(std::ostream &OS,
+void SubtargetEmitter::EmitProcessorData(raw_ostream &OS,
std::vector<std::vector<InstrItinerary> > &ProcList) {
// Get an iterator for processor itinerary stages
std::vector<std::vector<InstrItinerary> >::iterator
Record *Itin = Itins[i];
// Get processor itinerary name
- std::string Name = Itin->getName();
+ const std::string &Name = Itin->getName();
// Skip default
if (Name == "NoItineraries") continue;
// Begin processor itinerary table
OS << "\n";
- OS << "static llvm::InstrItinerary " << Name << "[] = {\n";
+ OS << "static const llvm::InstrItinerary " << Name << "[] = {\n";
// For each itinerary class
std::vector<InstrItinerary> &ItinList = *ProcListIter++;
- for (unsigned j = 0, M = ItinList.size(); j < M;) {
+ for (unsigned j = 0, M = ItinList.size(); j < M; ++j) {
InstrItinerary &Intinerary = ItinList[j];
- // Emit in the form of { first, last } // index
- if (Intinerary.First == 0) {
- OS << " { 0, 0 }";
+ // Emit in the form of
+ // { firstStage, lastStage, firstCycle, lastCycle } // index
+ if (Intinerary.FirstStage == 0) {
+ OS << " { 0, 0, 0, 0 }";
} else {
- OS << " { " << Intinerary.First << ", " << Intinerary.Last << " }";
+ OS << " { " << Intinerary.FirstStage << ", " <<
+ Intinerary.LastStage << ", " <<
+ Intinerary.FirstOperandCycle << ", " <<
+ Intinerary.LastOperandCycle << " }";
}
- // If more in list add comma
- if (++j < M) OS << ",";
-
- OS << " // " << (j - 1) << "\n";
+ OS << ", // " << j << "\n";
}
// End processor itinerary table
+ OS << " { ~0U, ~0U, ~0U, ~0U } // end marker\n";
OS << "};\n";
}
-
- OS << "\n";
- OS << "static llvm::InstrItinerary NoItineraries[] = { {0, 0} };\n";
}
//
// EmitProcessorLookup - generate cpu name to itinerary lookup table.
//
-void SubtargetEmitter::EmitProcessorLookup(std::ostream &OS) {
+void SubtargetEmitter::EmitProcessorLookup(raw_ostream &OS) {
// Gather and sort processor information
std::vector<Record*> ProcessorList =
Records.getAllDerivedDefinitions("Processor");
// Next processor
Record *Processor = ProcessorList[i];
- std::string Name = Processor->getValueAsString("Name");
- std::string ProcItin = Processor->getValueAsDef("ProcItin")->getName();
+ const std::string &Name = Processor->getValueAsString("Name");
+ const std::string &ProcItin =
+ Processor->getValueAsDef("ProcItin")->getName();
// Emit as { "cpu", procinit },
OS << " { "
//
// EmitData - Emits all stages and itineries, folding common patterns.
//
-void SubtargetEmitter::EmitData(std::ostream &OS) {
+void SubtargetEmitter::EmitData(raw_ostream &OS) {
std::map<std::string, unsigned> ItinClassesMap;
std::vector<std::vector<InstrItinerary> > ProcList;
if (HasItineraries) {
// Emit the stage data
- EmitStageData(OS, NItinClasses, ItinClassesMap, ProcList);
+ EmitStageAndOperandCycleData(OS, NItinClasses, ItinClassesMap, ProcList);
// Emit the processor itinerary data
EmitProcessorData(OS, ProcList);
// Emit the processor lookup data
// ParseFeaturesFunction - Produces a subtarget specific function for parsing
// the subtarget features string.
//
-void SubtargetEmitter::ParseFeaturesFunction(std::ostream &OS) {
+void SubtargetEmitter::ParseFeaturesFunction(raw_ostream &OS) {
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"
- "void llvm::";
+ << "// subtarget options.\n"
+ << "std::string 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";
-
+ << " const std::string &CPU) {\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";
+
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 Value = R->getValueAsString("Value");
- std::string Attribute = R->getValueAsString("Attribute");
-
- OS << " if ((Bits & " << Instance << ") != 0) "
- << Attribute << " = " << Value << ";\n";
+ const std::string &Instance = R->getName();
+ const std::string &Value = R->getValueAsString("Value");
+ const std::string &Attribute = R->getValueAsString("Attribute");
+
+ if (Value=="true" || Value=="false")
+ OS << " if ((Bits & " << 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, Itinerary);\n";
+ << "Features.getInfo(ProcItinKV, ProcItinKVSize);\n"
+ << " InstrItins = InstrItineraryData(Stages, OperandCycles, Itinerary);\n";
}
-
- OS << "}\n";
+
+ OS << " return Features.getCPU();\n"
+ << "}\n";
}
-//
+//
// SubtargetEmitter::run - Main subtarget enumeration emitter.
//
-void SubtargetEmitter::run(std::ostream &OS) {
+void SubtargetEmitter::run(raw_ostream &OS) {
Target = CodeGenTarget().getName();
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";
-
- Enumeration(OS, "FuncUnit", true);
- OS<<"\n";
+
+// Enumeration(OS, "FuncUnit", true);
+// OS<<"\n";
// Enumeration(OS, "InstrItinClass", false);
// OS<<"\n";
Enumeration(OS, "SubtargetFeature", true);
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