X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FMC%2FMCSubtargetInfo.h;h=346fb2df0ffc03e4ab8515dcc1c13ad31bdf78ec;hb=d7802bf0ddcac16ee910105922492aee86a53e1b;hp=d5e15d4842f42db181925a1f4f34f2fd9387adc5;hpb=e127dfd0b175b5a336e61fecaad7fc2aec65d95c;p=oota-llvm.git

diff --git a/include/llvm/MC/MCSubtargetInfo.h b/include/llvm/MC/MCSubtargetInfo.h
index d5e15d4842f..346fb2df0ff 100644
--- a/include/llvm/MC/MCSubtargetInfo.h
+++ b/include/llvm/MC/MCSubtargetInfo.h
@@ -14,8 +14,8 @@
 #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 {
@@ -68,9 +68,9 @@ public:
     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.
@@ -109,6 +109,9 @@ public:
 
   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)