llvm::SplitEdge should refuse to split an edge from an indirectbr.
Fix CodeGenPrepare to not try to split edges from indirectbr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85690 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/BasicBlockUtils.cpp b/lib/Transforms/Utils/BasicBlockUtils.cpp
index f3c1754..1f9a203 100644
--- a/lib/Transforms/Utils/BasicBlockUtils.cpp
+++ b/lib/Transforms/Utils/BasicBlockUtils.cpp
@@ -271,6 +271,8 @@
/// SplitEdge - Split the edge connecting specified block. Pass P must
/// not be NULL.
BasicBlock *llvm::SplitEdge(BasicBlock *BB, BasicBlock *Succ, Pass *P) {
+ assert(!isa<IndirectBrInst>(BB->getTerminator()) &&
+ "Cannot split an edge from an IndirectBrInst");
TerminatorInst *LatchTerm = BB->getTerminator();
unsigned SuccNum = 0;
#ifndef NDEBUG