#ifndef LLVM_MC_MCSUBTARGET_H
#define LLVM_MC_MCSUBTARGET_H
-#include "llvm/MC/SubtargetFeature.h"
#include "llvm/MC/MCInstrItineraries.h"
+#include "llvm/MC/SubtargetFeature.h"
#include <string>
namespace llvm {
return FeatureBits;
}
- /// ReInitMCSubtargetInfo - Change CPU (and optionally supplemented with
- /// feature string), recompute and return feature bits.
- uint64_t ReInitMCSubtargetInfo(StringRef CPU, StringRef FS);
+ /// InitMCProcessorInfo - Set or change the CPU (optionally supplemented with
+ /// feature string). Recompute feature bits and scheduling model.
+ void InitMCProcessorInfo(StringRef CPU, StringRef FS);
/// ToggleFeature - Toggle a feature and returns the re-computed feature
/// bits. This version does not change the implied bits.
int getReadAdvanceCycles(const MCSchedClassDesc *SC, unsigned UseIdx,
unsigned WriteResID) const {
+ // TODO: The number of read advance entries in a class can be significant
+ // (~50). Consider compressing the WriteID into a dense ID of those that are
+ // used by ReadAdvance and representing them as a bitset.
for (const MCReadAdvanceEntry *I = &ReadAdvanceTable[SC->ReadAdvanceIdx],
*E = I + SC->NumReadAdvanceEntries; I != E; ++I) {
if (I->UseIdx < UseIdx)