//
//===----------------------------------------------------------------------===//
+#define DEBUG_TYPE "subtarget-emitter"
+
#include "CodeGenTarget.h"
#include "CodeGenSchedule.h"
-#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringExtras.h"
#include "llvm/MC/MCInstrItineraries.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Format.h"
#include "llvm/TableGen/Error.h"
#include "llvm/TableGen/Record.h"
#include "llvm/TableGen/TableGenBackend.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/Format.h"
#include <algorithm>
#include <map>
#include <string>
std::vector<std::vector<MCSchedClassDesc> > ProcSchedClasses;
std::vector<MCWriteProcResEntry> WriteProcResources;
std::vector<MCWriteLatencyEntry> WriteLatencies;
+ std::vector<std::string> WriterNames;
std::vector<MCReadAdvanceEntry> ReadAdvanceEntries;
// Reserve an invalid entry at index 0
ProcSchedClasses.resize(1);
WriteProcResources.resize(1);
WriteLatencies.resize(1);
+ WriterNames.push_back("InvalidWrite");
ReadAdvanceEntries.resize(1);
}
};
char Separator);
void EmitProcessorResources(const CodeGenProcModel &ProcModel,
raw_ostream &OS);
- Record *FindWriteResources(Record *WriteDef,
+ Record *FindWriteResources(const CodeGenSchedRW &SchedWrite,
const CodeGenProcModel &ProcModel);
- Record *FindReadAdvance(Record *ReadDef, const CodeGenProcModel &ProcModel);
+ Record *FindReadAdvance(const CodeGenSchedRW &SchedRead,
+ const CodeGenProcModel &ProcModel);
void GenSchedClassTables(const CodeGenProcModel &ProcModel,
SchedClassTables &SchedTables);
void EmitSchedClassTables(SchedClassTables &SchedTables, raw_ostream &OS);
raw_ostream &OS) {
char Sep = ProcModel.ProcResourceDefs.empty() ? ' ' : ',';
- OS << "\n// {Name, NumUnits, SuperIdx}\n";
+ OS << "\n// {Name, NumUnits, SuperIdx, IsBuffered}\n";
OS << "static const llvm::MCProcResourceDesc "
<< ProcModel.ModelName << "ProcResources" << "[] = {\n"
- << " {DBGFIELD(\"InvalidUnit\") 0, 0}" << Sep << "\n";
+ << " {DBGFIELD(\"InvalidUnit\") 0, 0, 0}" << Sep << "\n";
for (unsigned i = 0, e = ProcModel.ProcResourceDefs.size(); i < e; ++i) {
Record *PRDef = ProcModel.ProcResourceDefs[i];
OS << " {DBGFIELD(\"" << PRDef->getName() << "\") ";
if (PRDef->getName().size() < 15)
OS.indent(15 - PRDef->getName().size());
- OS << PRDef->getValueAsInt("NumUnits") << ", " << SuperIdx
- << "}" << Sep << " // #" << i+1;
+ OS << PRDef->getValueAsInt("NumUnits") << ", " << SuperIdx << ", "
+ << PRDef->getValueAsBit("Buffered") << "}" << Sep << " // #" << i+1;
if (SuperDef)
OS << ", Super=" << SuperDef->getName();
OS << "\n";
// Find the WriteRes Record that defines processor resources for this
// SchedWrite.
Record *SubtargetEmitter::FindWriteResources(
- Record *WriteDef, const CodeGenProcModel &ProcModel) {
+ const CodeGenSchedRW &SchedWrite, const CodeGenProcModel &ProcModel) {
// Check if the SchedWrite is already subtarget-specific and directly
// specifies a set of processor resources.
- if (WriteDef->isSubClassOf("SchedWriteRes"))
- return WriteDef;
+ if (SchedWrite.TheDef->isSubClassOf("SchedWriteRes"))
+ return SchedWrite.TheDef;
+
+ Record *AliasDef = 0;
+ for (RecIter AI = SchedWrite.Aliases.begin(), AE = SchedWrite.Aliases.end();
+ AI != AE; ++AI) {
+ const CodeGenSchedRW &AliasRW =
+ SchedModels.getSchedRW((*AI)->getValueAsDef("AliasRW"));
+ if (AliasRW.TheDef->getValueInit("SchedModel")->isComplete()) {
+ Record *ModelDef = AliasRW.TheDef->getValueAsDef("SchedModel");
+ if (&SchedModels.getProcModel(ModelDef) != &ProcModel)
+ continue;
+ }
+ if (AliasDef)
+ PrintFatalError(AliasRW.TheDef->getLoc(), "Multiple aliases "
+ "defined for processor " + ProcModel.ModelName +
+ " Ensure only one SchedAlias exists per RW.");
+ AliasDef = AliasRW.TheDef;
+ }
+ if (AliasDef && AliasDef->isSubClassOf("SchedWriteRes"))
+ return AliasDef;
// Check this processor's list of write resources.
+ Record *ResDef = 0;
for (RecIter WRI = ProcModel.WriteResDefs.begin(),
WRE = ProcModel.WriteResDefs.end(); WRI != WRE; ++WRI) {
if (!(*WRI)->isSubClassOf("WriteRes"))
continue;
- if (WriteDef == (*WRI)->getValueAsDef("WriteType"))
- return *WRI;
+ if (AliasDef == (*WRI)->getValueAsDef("WriteType")
+ || SchedWrite.TheDef == (*WRI)->getValueAsDef("WriteType")) {
+ if (ResDef) {
+ PrintFatalError((*WRI)->getLoc(), "Resources are defined for both "
+ "SchedWrite and its alias on processor " +
+ ProcModel.ModelName);
+ }
+ ResDef = *WRI;
+ }
}
- throw TGError(ProcModel.ModelDef->getLoc(),
- std::string("Processor does not define resources for ")
- + WriteDef->getName());
+ // TODO: If ProcModel has a base model (previous generation processor),
+ // then call FindWriteResources recursively with that model here.
+ if (!ResDef) {
+ PrintFatalError(ProcModel.ModelDef->getLoc(),
+ std::string("Processor does not define resources for ")
+ + SchedWrite.TheDef->getName());
+ }
+ return ResDef;
}
/// Find the ReadAdvance record for the given SchedRead on this processor or
/// return NULL.
-Record *SubtargetEmitter::FindReadAdvance(Record *ReadDef,
+Record *SubtargetEmitter::FindReadAdvance(const CodeGenSchedRW &SchedRead,
const CodeGenProcModel &ProcModel) {
// Check for SchedReads that directly specify a ReadAdvance.
- if (ReadDef->isSubClassOf("SchedReadAdvance"))
- return ReadDef;
+ if (SchedRead.TheDef->isSubClassOf("SchedReadAdvance"))
+ return SchedRead.TheDef;
+
+ // Check this processor's list of aliases for SchedRead.
+ Record *AliasDef = 0;
+ for (RecIter AI = SchedRead.Aliases.begin(), AE = SchedRead.Aliases.end();
+ AI != AE; ++AI) {
+ const CodeGenSchedRW &AliasRW =
+ SchedModels.getSchedRW((*AI)->getValueAsDef("AliasRW"));
+ if (AliasRW.TheDef->getValueInit("SchedModel")->isComplete()) {
+ Record *ModelDef = AliasRW.TheDef->getValueAsDef("SchedModel");
+ if (&SchedModels.getProcModel(ModelDef) != &ProcModel)
+ continue;
+ }
+ if (AliasDef)
+ PrintFatalError(AliasRW.TheDef->getLoc(), "Multiple aliases "
+ "defined for processor " + ProcModel.ModelName +
+ " Ensure only one SchedAlias exists per RW.");
+ AliasDef = AliasRW.TheDef;
+ }
+ if (AliasDef && AliasDef->isSubClassOf("SchedReadAdvance"))
+ return AliasDef;
// Check this processor's ReadAdvanceList.
+ Record *ResDef = 0;
for (RecIter RAI = ProcModel.ReadAdvanceDefs.begin(),
RAE = ProcModel.ReadAdvanceDefs.end(); RAI != RAE; ++RAI) {
if (!(*RAI)->isSubClassOf("ReadAdvance"))
continue;
- if (ReadDef == (*RAI)->getValueAsDef("ReadType"))
- return *RAI;
+ if (AliasDef == (*RAI)->getValueAsDef("ReadType")
+ || SchedRead.TheDef == (*RAI)->getValueAsDef("ReadType")) {
+ if (ResDef) {
+ PrintFatalError((*RAI)->getLoc(), "Resources are defined for both "
+ "SchedRead and its alias on processor " +
+ ProcModel.ModelName);
+ }
+ ResDef = *RAI;
+ }
}
- if (ReadDef->getName() != "ReadDefault") {
- throw TGError(ProcModel.ModelDef->getLoc(),
+ // TODO: If ProcModel has a base model (previous generation processor),
+ // then call FindReadAdvance recursively with that model here.
+ if (!ResDef && SchedRead.TheDef->getName() != "ReadDefault") {
+ PrintFatalError(ProcModel.ModelDef->getLoc(),
std::string("Processor does not define resources for ")
- + ReadDef->getName());
+ + SchedRead.TheDef->getName());
}
- return NULL;
+ return ResDef;
}
// Generate the SchedClass table for this processor and update global
std::vector<MCSchedClassDesc> &SCTab = SchedTables.ProcSchedClasses.back();
for (CodeGenSchedModels::SchedClassIter SCI = SchedModels.schedClassBegin(),
SCE = SchedModels.schedClassEnd(); SCI != SCE; ++SCI) {
+ DEBUG(SCI->dump(&SchedModels));
+
SCTab.resize(SCTab.size() + 1);
MCSchedClassDesc &SCDesc = SCTab.back();
// SCDesc.Name is guarded by NDEBUG
}
}
else if (!SCI->InstRWs.empty()) {
- assert(SCI->Writes.empty() && SCI->Reads.empty() &&
- "InstRW class should not have its own ReadWrites");
+ // This class may have a default ReadWrite list which can be overriden by
+ // InstRW definitions.
Record *RWDef = 0;
for (RecIter RWI = SCI->InstRWs.begin(), RWE = SCI->InstRWs.end();
RWI != RWE; ++RWI) {
}
}
if (RWDef) {
+ Writes.clear();
+ Reads.clear();
SchedModels.findRWs(RWDef->getValueAsListOfDefs("OperandReadWrites"),
Writes, Reads);
}
// Sum resources across all operand writes.
std::vector<MCWriteProcResEntry> WriteProcResources;
std::vector<MCWriteLatencyEntry> WriteLatencies;
+ std::vector<std::string> WriterNames;
std::vector<MCReadAdvanceEntry> ReadAdvanceEntries;
for (IdxIter WI = Writes.begin(), WE = Writes.end(); WI != WE; ++WI) {
IdxVec WriteSeq;
- SchedModels.expandRWSequence(*WI, WriteSeq, /*IsRead=*/false);
+ SchedModels.expandRWSeqForProc(*WI, WriteSeq, /*IsRead=*/false,
+ ProcModel);
// For each operand, create a latency entry.
MCWriteLatencyEntry WLEntry;
WLEntry.Cycles = 0;
- WLEntry.WriteResourceID = WriteSeq.back();
+ unsigned WriteID = WriteSeq.back();
+ WriterNames.push_back(SchedModels.getSchedWrite(WriteID).Name);
+ // If this Write is not referenced by a ReadAdvance, don't distinguish it
+ // from other WriteLatency entries.
+ if (!SchedModels.hasReadOfWrite(SchedModels.getSchedWrite(WriteID).TheDef)) {
+ WriteID = 0;
+ }
+ WLEntry.WriteResourceID = WriteID;
for (IdxIter WSI = WriteSeq.begin(), WSE = WriteSeq.end();
WSI != WSE; ++WSI) {
- Record *WriteDef = SchedModels.getSchedWrite(*WSI).TheDef;
- Record *WriteRes = FindWriteResources(WriteDef, ProcModel);
+ Record *WriteRes =
+ FindWriteResources(SchedModels.getSchedWrite(*WSI), ProcModel);
// Mark the parent class as invalid for unsupported write types.
if (WriteRes->getValueAsBit("Unsupported")) {
// Entries must be sorted first by UseIdx then by WriteResourceID.
for (unsigned UseIdx = 0, EndIdx = Reads.size();
UseIdx != EndIdx; ++UseIdx) {
- Record *ReadDef = SchedModels.getSchedRead(Reads[UseIdx]).TheDef;
- Record *ReadAdvance = FindReadAdvance(ReadDef, ProcModel);
+ Record *ReadAdvance =
+ FindReadAdvance(SchedModels.getSchedRead(Reads[UseIdx]), ProcModel);
if (!ReadAdvance)
continue;
std::search(SchedTables.WriteLatencies.begin(),
SchedTables.WriteLatencies.end(),
WriteLatencies.begin(), WriteLatencies.end());
- if (WLPos != SchedTables.WriteLatencies.end())
- SCDesc.WriteLatencyIdx = WLPos - SchedTables.WriteLatencies.begin();
+ if (WLPos != SchedTables.WriteLatencies.end()) {
+ unsigned idx = WLPos - SchedTables.WriteLatencies.begin();
+ SCDesc.WriteLatencyIdx = idx;
+ for (unsigned i = 0, e = WriteLatencies.size(); i < e; ++i)
+ if (SchedTables.WriterNames[idx + i].find(WriterNames[i]) ==
+ std::string::npos) {
+ SchedTables.WriterNames[idx + i] += std::string("_") + WriterNames[i];
+ }
+ }
else {
SCDesc.WriteLatencyIdx = SchedTables.WriteLatencies.size();
- SchedTables.WriteLatencies.insert(WLPos, WriteLatencies.begin(),
- WriteLatencies.end());
+ SchedTables.WriteLatencies.insert(SchedTables.WriteLatencies.end(),
+ WriteLatencies.begin(),
+ WriteLatencies.end());
+ SchedTables.WriterNames.insert(SchedTables.WriterNames.end(),
+ WriterNames.begin(), WriterNames.end());
}
// ReadAdvanceEntries must remain in operand order.
SCDesc.NumReadAdvanceEntries = ReadAdvanceEntries.size();
<< format("%2d", WLEntry.WriteResourceID) << "}";
if (WLIdx + 1 < WLEnd)
OS << ',';
- OS << " // #" << WLIdx << " "
- << SchedModels.getSchedWrite(WLEntry.WriteResourceID).Name << '\n';
+ OS << " // #" << WLIdx << " " << SchedTables.WriterNames[WLIdx] << '\n';
}
OS << "}; // " << Target << "WriteLatencyTable\n";
continue;
std::vector<MCSchedClassDesc> &SCTab =
- SchedTables.ProcSchedClasses[1 + PI - SchedModels.procModelBegin()];
+ SchedTables.ProcSchedClasses[1 + (PI - SchedModels.procModelBegin())];
OS << "\n// {Name, NumMicroOps, BeginGroup, EndGroup,"
<< " WriteProcResIdx,#, WriteLatencyIdx,#, ReadAdvanceIdx,#}\n";
if (PI->hasInstrSchedModel())
EmitProcessorResources(*PI, OS);
else if(!PI->ProcResourceDefs.empty())
- throw TGError(PI->ModelDef->getLoc(), "SchedMachineModel defines "
+ PrintFatalError(PI->ModelDef->getLoc(), "SchedMachineModel defines "
"ProcResources without defining WriteRes SchedWriteRes");
// Begin processor itinerary properties
OS << "\n#ifdef GET_SUBTARGETINFO_CTOR\n";
OS << "#undef GET_SUBTARGETINFO_CTOR\n";
+ OS << "#include \"llvm/CodeGen/TargetSchedule.h\"\n";
OS << "namespace llvm {\n";
OS << "extern const llvm::SubtargetFeatureKV " << Target << "FeatureKV[];\n";
OS << "extern const llvm::SubtargetFeatureKV " << Target << "SubTypeKV[];\n";
projects / oota-llvm.git / blobdiff