Reapply r185393.

[oota-llvm.git] / lib / CodeGen / SpillPlacement.h

diff --git a/lib/CodeGen/SpillPlacement.h b/lib/CodeGen/SpillPlacement.h
index fc412f817cdb490545129c4bfd9710558a4b0fd4..a0480d587d6c89a2a4bfc746f962990abde52a15 100644 (file)
--- a/lib/CodeGen/SpillPlacement.h
+++ b/lib/CodeGen/SpillPlacement.h
@@ -30,6 +30,7 @@
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/CodeGen/MachineFunctionPass.h"
+#include "llvm/Support/BlockFrequency.h"
 
 namespace llvm {
 
@@ -57,7 +58,7 @@ class SpillPlacement  : public MachineFunctionPass {
   SmallVector<unsigned, 8> RecentPositive;
 
   // Block frequencies are computed once. Indexed by block number.
-  SmallVector<float, 4> BlockFrequency;
+  SmallVector<BlockFrequency, 4> BlockFrequencies;
 
 public:
   static char ID; // Pass identification, replacement for typeid.
@@ -140,7 +141,9 @@ public:
   /// getBlockFrequency - Return the estimated block execution frequency per
   /// function invocation.
   float getBlockFrequency(unsigned Number) const {
-    return BlockFrequency[Number];
+    // FIXME: Return the BlockFrequency directly.
+    const float Scale = 1.0f / BlockFrequency::getEntryFrequency();
+    return BlockFrequencies[Number].getFrequency() * Scale;
   }
 
 private: