Remove some unneeded branches. (spotted by Evan, thanks)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37198 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/BranchFolding.cpp b/lib/CodeGen/BranchFolding.cpp
index 7b4aaae482412445c725fd56daae6615a602af5a..d8ec3406921bb7fde087f157e39c5f6a26e37d5a 100644 (file)
--- a/lib/CodeGen/BranchFolding.cpp
+++ b/lib/CodeGen/BranchFolding.cpp
@@ -595,6 +595,7 @@ bool BranchFolder::TailMergeBlocks(MachineFunction &MF) {
     // Reinsert an unconditional branch if needed.
     // The 1 below can be either an original single predecessor, or a result
     // of removing blocks in TryMergeBlocks.
+    PredBB = prior(I);      // this may have been changed in TryMergeBlocks
     if (MergePotentials.size()==1 && 
         (MergePotentials.begin())->second != PredBB)
       FixTail((MergePotentials.begin())->second, I, TII);