Fix typo in comment.

llvm-svn: 36873
diff --git a/llvm/lib/Transforms/IPO/ConstantMerge.cpp b/llvm/lib/Transforms/IPO/ConstantMerge.cpp
index c13b69f..0c7ee59 100644
--- a/llvm/lib/Transforms/IPO/ConstantMerge.cpp
+++ b/llvm/lib/Transforms/IPO/ConstantMerge.cpp
@@ -29,7 +29,7 @@
 
 namespace {
   struct VISIBILITY_HIDDEN ConstantMerge : public ModulePass {
-    static char ID; // Pass identifcation, replacement for typeid
+    static char ID; // Pass identification, replacement for typeid
     ConstantMerge() : ModulePass((intptr_t)&ID) {}
 
     // run - For this pass, process all of the globals in the module,