Fix typo in comment.

llvm-svn: 36873
diff --git a/llvm/lib/Transforms/Scalar/GCSE.cpp b/llvm/lib/Transforms/Scalar/GCSE.cpp
index fa9867a..c46c36a 100644
--- a/llvm/lib/Transforms/Scalar/GCSE.cpp
+++ b/llvm/lib/Transforms/Scalar/GCSE.cpp
@@ -37,7 +37,7 @@
                           "with constant values");
 namespace {
   struct VISIBILITY_HIDDEN GCSE : public FunctionPass {
-    static char ID; // Pass identifcation, replacement for typeid
+    static char ID; // Pass identification, replacement for typeid
     GCSE() : FunctionPass((intptr_t)&ID) {}
 
     virtual bool runOnFunction(Function &F);