#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 {
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)