fix typo

llvm-svn: 45594
diff --git a/llvm/lib/Transforms/Scalar/LoopUnroll.cpp b/llvm/lib/Transforms/Scalar/LoopUnroll.cpp
index c24c35a..ff2168a 100644
--- a/llvm/lib/Transforms/Scalar/LoopUnroll.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopUnroll.cpp
@@ -207,7 +207,7 @@
        << "] Loop %" << Header->getName() << "\n";
 
   if (!BI || BI->isUnconditional()) {
-    // The loop-rorate pass can be helpful to avoid this in many cases.
+    // The loop-rotate pass can be helpful to avoid this in many cases.
     DOUT << "  Can't unroll; loop not terminated by a conditional branch.\n";
     return false;
   }