Blocks that cond-br and uncond-br/fallthrough to same block should have
only one successor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37324 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/BranchFolding.cpp b/lib/CodeGen/BranchFolding.cpp
index 6c632c2..1fe2962 100644
--- a/lib/CodeGen/BranchFolding.cpp
+++ b/lib/CodeGen/BranchFolding.cpp
@@ -672,7 +672,10 @@
MachineBasicBlock::pred_iterator SI = MBB.succ_begin();
while (SI != MBB.succ_end()) {
- if (*SI == DestA) {
+ if (*SI == DestA && DestA == DestB) {
+ DestA = DestB = 0;
+ ++SI;
+ } else if (*SI == DestA) {
DestA = 0;
++SI;
} else if (*SI == DestB) {