fixup! Use SmallPtrSet.

Author: topperc

llvm/utils/TableGen/Common/CodeGenSchedule.cpp

@@ -2175,7 +2175,7 @@ bool CodeGenProcModel::isUnsupported(const CodeGenInstruction &Inst) const {
 }
 
 bool CodeGenProcModel::hasReadOfWrite(const Record *WriteDef) const {
-  return ReadOfWriteSet.count(WriteDef) != 0;
+  return ReadOfWriteSet.count(WriteDef);
 }
 
 #ifndef NDEBUG

llvm/utils/TableGen/Common/CodeGenSchedule.h

@@ -19,6 +19,7 @@
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/DenseSet.h"
 #include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/TableGen/Record.h"
 #include "llvm/TableGen/SetTheory.h"
@@ -251,7 +252,7 @@ struct CodeGenProcModel {
   DenseMap<const Record *, const Record *> ReadAdvanceMap;
 
   // Set of WriteRes that are referenced by a ReadAdvance.
-  DenseSet<const Record *> ReadOfWriteSet;
+  SmallPtrSet<const Record *, 8> ReadOfWriteSet;
 
   // Per-operand machine model resources associated with this processor.
   ConstRecVec ProcResourceDefs;