add a helper

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22823 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Transforms/Utils/BasicBlockUtils.h b/include/llvm/Transforms/Utils/BasicBlockUtils.h
index 68e483c0bc7f2093e986ad92d32b4dcd6738e70b..7a67df537f563262a8e8a8b482ddec246d7019af 100644 (file)
--- a/include/llvm/Transforms/Utils/BasicBlockUtils.h
+++ b/include/llvm/Transforms/Utils/BasicBlockUtils.h
@@ -84,6 +84,13 @@ inline bool SplitCriticalEdge(BasicBlock *Succ, pred_iterator PI, Pass *P = 0) {
   return MadeChange;
 }
 
   return MadeChange;
 }
 

+inline bool SplitCriticalEdge(BasicBlock *Src, BasicBlock *Dst, Pass *P = 0) {
+  for (succ_iterator SI = succ_begin(Src); ; ++SI) {
+    assert(SI != succ_end(Src) && "Edge doesn't exist");
+    if (*SI == Dst)
+      return SplitCriticalEdge(Src, SI, P);
+  }
+}

 } // End llvm namespace
 
 #endif
 } // End llvm namespace
 
 #endif