[NFC] Rename DontDeleteUselessPHIs --> KeepOneInputPHIs

llvm-svn: 353801
diff --git a/llvm/lib/Transforms/Utils/LoopSimplify.cpp b/llvm/lib/Transforms/Utils/LoopSimplify.cpp
index 954e803..ca29f67 100644
--- a/llvm/lib/Transforms/Utils/LoopSimplify.cpp
+++ b/llvm/lib/Transforms/Utils/LoopSimplify.cpp
@@ -662,9 +662,9 @@
       DT->eraseNode(ExitingBlock);
 
       BI->getSuccessor(0)->removePredecessor(
-          ExitingBlock, /* DontDeleteUselessPHIs */ PreserveLCSSA);
+          ExitingBlock, /* KeepOneInputPHIs */ PreserveLCSSA);
       BI->getSuccessor(1)->removePredecessor(
-          ExitingBlock, /* DontDeleteUselessPHIs */ PreserveLCSSA);
+          ExitingBlock, /* KeepOneInputPHIs */ PreserveLCSSA);
       ExitingBlock->eraseFromParent();
     }
   }