[llvm-commits] [llvm] r143190 - /llvm/trunk/lib/CodeGen/MachineBranchProbabilityInfo.cpp

[Benjamin Kramer]

Author: d0k
Date: Fri Oct 28 06:14:31 2011
New Revision: 143190

URL: http://llvm.org/viewvc/llvm-project?rev=143190&view=rev
Log:
Use BranchProbability compare operators.

Modified:
    llvm/trunk/lib/CodeGen/MachineBranchProbabilityInfo.cpp

Modified: llvm/trunk/lib/CodeGen/MachineBranchProbabilityInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineBranchProbabilityInfo.cpp?rev=143190&r1=143189&r2=143190&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/MachineBranchProbabilityInfo.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineBranchProbabilityInfo.cpp Fri Oct 28 06:14:31 2011
@@ -55,12 +55,8 @@
 bool MachineBranchProbabilityInfo::isEdgeHot(MachineBasicBlock *Src,
                                              MachineBasicBlock *Dst) const {
   // Hot probability is at least 4/5 = 80%
-  uint32_t Weight = getEdgeWeight(Src, Dst);
-  uint32_t Sum = getSumForBlock(Src);
-
-  // FIXME: Implement BranchProbability::compare then change this code to
-  // compare this BranchProbability against a static "hot" BranchProbability.
-  return (uint64_t)Weight * 5 > (uint64_t)Sum * 4;
+  // FIXME: Compare against a static "hot" BranchProbability.
+  return getEdgeProbability(Src, Dst) > BranchProbability(4, 5);
 }
 
 MachineBasicBlock *
@@ -84,8 +80,7 @@
     }
   }
 
-  // FIXME: Use BranchProbability::compare.
-  if ((uint64_t)MaxWeight * 5 >= (uint64_t)Sum * 4)
+  if (BranchProbability(MaxWeight, Sum) >= BranchProbability(4, 5))
     return MaxSucc;
 
   return 0;