//===----------------------------------------------------------------------===//
#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Triple.h"
#include "llvm/MC/MCInstrItineraries.h"
#include "llvm/MC/SubtargetFeature.h"
-#include "llvm/ADT/StringRef.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
using namespace llvm;
-InstrItineraryData
-MCSubtargetInfo::getInstrItineraryForCPU(StringRef CPU) const {
- assert(ProcItins && "Instruction itineraries information not available!");
+/// InitMCProcessorInfo - Set or change the CPU (optionally supplemented
+/// with feature string). Recompute feature bits and scheduling model.
+void
+MCSubtargetInfo::InitMCProcessorInfo(StringRef CPU, StringRef FS) {
+ SubtargetFeatures Features(FS);
+ FeatureBits = Features.getFeatureBits(CPU, ProcDesc, ProcFeatures);
+ InitCPUSchedModel(CPU);
+}
+
+void
+MCSubtargetInfo::InitCPUSchedModel(StringRef CPU) {
+ if (!CPU.empty())
+ CPUSchedModel = getSchedModelForCPU(CPU);
+ else
+ CPUSchedModel = MCSchedModel::GetDefaultSchedModel();
+}
+
+void
+MCSubtargetInfo::InitMCSubtargetInfo(StringRef TT, StringRef C, StringRef FS,
+ ArrayRef<SubtargetFeatureKV> PF,
+ ArrayRef<SubtargetFeatureKV> PD,
+ const SubtargetInfoKV *ProcSched,
+ const MCWriteProcResEntry *WPR,
+ const MCWriteLatencyEntry *WL,
+ const MCReadAdvanceEntry *RA,
+ const InstrStage *IS,
+ const unsigned *OC,
+ const unsigned *FP) {
+ TargetTriple = TT;
+ CPU = C;
+ ProcFeatures = PF;
+ ProcDesc = PD;
+ ProcSchedModels = ProcSched;
+ WriteProcResTable = WPR;
+ WriteLatencyTable = WL;
+ ReadAdvanceTable = RA;
+
+ Stages = IS;
+ OperandCycles = OC;
+ ForwardingPaths = FP;
+
+ InitMCProcessorInfo(CPU, FS);
+}
+
+/// ToggleFeature - Toggle a feature and returns the re-computed feature
+/// bits. This version does not change the implied bits.
+FeatureBitset MCSubtargetInfo::ToggleFeature(uint64_t FB) {
+ FeatureBits.flip(FB);
+ return FeatureBits;
+}
+FeatureBitset MCSubtargetInfo::ToggleFeature(const FeatureBitset &FB) {
+ FeatureBits ^= FB;
+ return FeatureBits;
+}
+
+/// ToggleFeature - Toggle a feature and returns the re-computed feature
+/// bits. This version will also change all implied bits.
+FeatureBitset MCSubtargetInfo::ToggleFeature(StringRef FS) {
+ SubtargetFeatures Features;
+ FeatureBits = Features.ToggleFeature(FeatureBits, FS, ProcFeatures);
+ return FeatureBits;
+}
+
+FeatureBitset MCSubtargetInfo::ApplyFeatureFlag(StringRef FS) {
+ SubtargetFeatures Features;
+ FeatureBits = Features.ApplyFeatureFlag(FeatureBits, FS, ProcFeatures);
+ return FeatureBits;
+}
+
+MCSchedModel
+MCSubtargetInfo::getSchedModelForCPU(StringRef CPU) const {
+ assert(ProcSchedModels && "Processor machine model not available!");
+
+ unsigned NumProcs = ProcDesc.size();
#ifndef NDEBUG
for (size_t i = 1; i < NumProcs; i++) {
- assert(strcmp(ProcItins[i - 1].Key, ProcItins[i].Key) < 0 &&
- "Itineraries table is not sorted");
+ assert(strcmp(ProcSchedModels[i - 1].Key, ProcSchedModels[i].Key) < 0 &&
+ "Processor machine model table is not sorted");
}
#endif
// Find entry
- SubtargetInfoKV KV;
- KV.Key = CPU.data();
const SubtargetInfoKV *Found =
- std::lower_bound(ProcItins, ProcItins+NumProcs, KV);
- if (Found == ProcItins+NumProcs || StringRef(Found->Key) != CPU) {
- errs() << "'" << CPU
- << "' is not a recognized processor for this target"
- << " (ignoring processor)\n";
- return InstrItineraryData();
+ std::lower_bound(ProcSchedModels, ProcSchedModels+NumProcs, CPU);
+ if (Found == ProcSchedModels+NumProcs || StringRef(Found->Key) != CPU) {
+ if (CPU != "help") // Don't error if the user asked for help.
+ errs() << "'" << CPU
+ << "' is not a recognized processor for this target"
+ << " (ignoring processor)\n";
+ return MCSchedModel::GetDefaultSchedModel();
}
+ assert(Found->Value && "Missing processor SchedModel value");
+ return *(const MCSchedModel *)Found->Value;
+}
+
+InstrItineraryData
+MCSubtargetInfo::getInstrItineraryForCPU(StringRef CPU) const {
+ const MCSchedModel SchedModel = getSchedModelForCPU(CPU);
+ return InstrItineraryData(SchedModel, Stages, OperandCycles, ForwardingPaths);
+}
- return InstrItineraryData(Stages, OperandCycles, ForwardingPathes,
- (InstrItinerary *)Found->Value);
+/// Initialize an InstrItineraryData instance.
+void MCSubtargetInfo::initInstrItins(InstrItineraryData &InstrItins) const {
+ InstrItins =
+ InstrItineraryData(CPUSchedModel, Stages, OperandCycles, ForwardingPaths);
}