Fix spelling, patch contributed by Gabor Greif!

llvm-svn: 20343
diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
index 870a901..4954c72 100644
--- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -196,7 +196,7 @@
   if (!I) return true;    // Non-instructions all dominate instructions.
   BasicBlock *PBB = I->getParent();
 
-  // We don't want to allow wierd loops that might have the "if condition" in
+  // We don't want to allow weird loops that might have the "if condition" in
   // the bottom of this block.
   if (PBB == BB) return false;