Tidy up BasicBlock::getFirstNonPHI, and change a bunch of places to
use it instead of duplicating its functionality.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51499 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/LCSSA.cpp b/lib/Transforms/Utils/LCSSA.cpp
index 5def5f9..316784d 100644
--- a/lib/Transforms/Utils/LCSSA.cpp
+++ b/lib/Transforms/Utils/LCSSA.cpp
@@ -225,9 +225,7 @@
             // immediately here. It will be processed in next iteration.
             BasicBlock::iterator InsertPoint;
             if (InvokeInst *II = dyn_cast<InvokeInst>(I)) {
-              InsertPoint = II->getNormalDest()->begin();
-              while (isa<PHINode>(InsertPoint))
-                ++InsertPoint;
+              InsertPoint = II->getNormalDest()->getFirstNonPHI();
             } else {
               InsertPoint = I;
               InsertPoint++;