fix ISD::BRCONDTWOWAY codegen to not deference the end() iterator
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21193 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCISelPattern.cpp b/lib/Target/PowerPC/PPCISelPattern.cpp
index 44e041a..02ad4e4 100644
--- a/lib/Target/PowerPC/PPCISelPattern.cpp
+++ b/lib/Target/PowerPC/PPCISelPattern.cpp
@@ -1000,7 +1000,7 @@
// Iterate to the next basic block, unless we're already at the end of the
ilist<MachineBasicBlock>::iterator It = BB, E = BB->getParent()->end();
- if (It != E) ++It;
+ if (++It == E) It = BB;
// If this is a two way branch, then grab the fallthrough basic block argument
// and build a PowerPC branch pseudo-op, suitable for long branch conversion