Remove all uses of the "ugly" method BranchInst::setUnconditionalDest().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123025 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/LoopUnroll.cpp b/lib/Transforms/Utils/LoopUnroll.cpp
index 9af0be9..6e8532f 100644
--- a/lib/Transforms/Utils/LoopUnroll.cpp
+++ b/lib/Transforms/Utils/LoopUnroll.cpp
@@ -341,7 +341,9 @@
       // iteration.
       Term->setSuccessor(!ContinueOnTrue, Dest);
     } else {
-      Term->setUnconditionalDest(Dest);
+      // Replace the conditional branch with an unconditional one.
+      BranchInst::Create(Dest, Term);
+      Term->eraseFromParent();
       // Merge adjacent basic blocks, if possible.
       if (BasicBlock *Fold = FoldBlockIntoPredecessor(Dest, LI)) {
         std::replace(Latches.begin(), Latches.end(), Dest, Fold);