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-rw-r--r--include/llvm/Transforms/Utils/BasicBlockUtils.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/llvm/Transforms/Utils/BasicBlockUtils.h b/include/llvm/Transforms/Utils/BasicBlockUtils.h
index 3f4571ebdd..281437150f 100644
--- a/include/llvm/Transforms/Utils/BasicBlockUtils.h
+++ b/include/llvm/Transforms/Utils/BasicBlockUtils.h
@@ -102,6 +102,11 @@ void FindFunctionBackedges(const Function &F,
//
void RemoveSuccessor(TerminatorInst *TI, unsigned SuccNum);
+/// SuccessorNumber - Search for the specified successor of basic block BB and
+/// return its position in the terminator instruction's list of successors.
+/// It is an error to call this with a block that is not a successor.
+unsigned SuccessorNumber(BasicBlock *BB, BasicBlock *Succ);
+
/// isCriticalEdge - Return true if the specified edge is a critical edge.
/// Critical edges are edges from a block with multiple successors to a block
/// with multiple predecessors.