[llvm-commits] CVS: llvm/lib/Transforms/Scalar/LoopUnswitch.cpp

[Devang Patel]

Changes in directory llvm/lib/Transforms/Scalar:

LoopUnswitch.cpp updated: 1.62 -> 1.63
---
Log message:

Use efficient container SmallPtrSet


---
Diffs of the changes:  (+4 -3)

 LoopUnswitch.cpp |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)


Index: llvm/lib/Transforms/Scalar/LoopUnswitch.cpp
diff -u llvm/lib/Transforms/Scalar/LoopUnswitch.cpp:1.62 
llvm/lib/Transforms/Scalar/LoopUnswitch.cpp:1.63
--- llvm/lib/Transforms/Scalar/LoopUnswitch.cpp:1.62    Mon Feb 26 13:31:58 2007
+++ llvm/lib/Transforms/Scalar/LoopUnswitch.cpp Mon Feb 26 14:22:50 2007
@@ -38,6 +38,7 @@
 #include "llvm/Transforms/Utils/Local.h"
 #include "llvm/Transforms/Utils/BasicBlockUtils.h"
 #include "llvm/ADT/Statistic.h"
+#include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/PostOrderIterator.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Compiler.h"
@@ -62,7 +63,7 @@
 
     // LoopProcessWorklist - List of loops we need to process.
     std::vector<Loop*> LoopProcessWorklist;
-    std::set<Value *> UnswitchedVals;
+    SmallPtrSet<Value *,8> UnswitchedVals;
 
   public:
     virtual bool runOnFunction(Function &F);
@@ -129,6 +130,7 @@
     Changed |= visitLoop(L);
   }
 
+  UnswitchedVals.clear();
   return Changed;
 }
 
@@ -189,9 +191,8 @@
         // FIXME: this should chose the most expensive case!
         Constant *UnswitchVal = SI->getCaseValue(1);
         // Do not process same value again and again.
-        if (UnswitchedVals.count(UnswitchVal) != 0)
+        if (!UnswitchedVals.insert(UnswitchVal))
           continue;
-        UnswitchedVals.insert(UnswitchVal);
 
         if (UnswitchIfProfitable(LoopCond, UnswitchVal, L)) {
           ++NumSwitches;



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