Fix typo in comment.

llvm-svn: 36873
diff --git a/llvm/lib/Transforms/Scalar/BasicBlockPlacement.cpp b/llvm/lib/Transforms/Scalar/BasicBlockPlacement.cpp
index 28e8012..7521ea3 100644
--- a/llvm/lib/Transforms/Scalar/BasicBlockPlacement.cpp
+++ b/llvm/lib/Transforms/Scalar/BasicBlockPlacement.cpp
@@ -41,7 +41,7 @@
 
 namespace {
   struct VISIBILITY_HIDDEN BlockPlacement : public FunctionPass {
-    static char ID; // Pass identifcation, replacement for typeid
+    static char ID; // Pass identification, replacement for typeid
     BlockPlacement() : FunctionPass((intptr_t)&ID) {}
 
     virtual bool runOnFunction(Function &F);