Add support for the unreachable instruction

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17039 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 3 deletions

diff --git a/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h b/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h
index 590d510..6202f85 100644
--- a/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h
+++ b/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h
@@ -23,18 +23,19 @@
 namespace llvm {
 
 struct UnifyFunctionExitNodes : public FunctionPass {
-  BasicBlock *ReturnBlock, *UnwindBlock;
+  BasicBlock *ReturnBlock, *UnwindBlock, *UnreachableBlock;
 public:
   UnifyFunctionExitNodes() : ReturnBlock(0), UnwindBlock(0) {}
 
   // We can preserve non-critical-edgeness when we unify function exit nodes
   virtual void getAnalysisUsage(AnalysisUsage &AU) const;
 
-  // getReturn|UnwindBlock - Return the new single (or nonexistant) return or
-  // unwind basic blocks in the CFG.
+  // getReturn|Unwind|UnreachableBlock - Return the new single (or nonexistant)
+  // return, unwind, or unreachable  basic blocks in the CFG.
   //
   BasicBlock *getReturnBlock() const { return ReturnBlock; }
   BasicBlock *getUnwindBlock() const { return UnwindBlock; }
+  BasicBlock *getUnreachableBlock() const { return UnreachableBlock; }
 
   virtual bool runOnFunction(Function &F);
 };