turn off tail merging for now
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31180 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/BranchFolding.cpp b/lib/CodeGen/BranchFolding.cpp
index 652a647..202f986 100644
--- a/lib/CodeGen/BranchFolding.cpp
+++ b/lib/CodeGen/BranchFolding.cpp
@@ -206,6 +206,8 @@
bool BranchFolder::TailMergeBlocks(MachineFunction &MF) {
MadeChange = false;
+ return false;
+
// Find blocks with no successors.
std::vector<std::pair<unsigned,MachineBasicBlock*> > MergePotentials;
for (MachineFunction::iterator I = MF.begin(), E = MF.end(); I != E; ++I) {