Fix a typo 'iff' => 'if'

llvm-svn: 164767
diff --git a/llvm/lib/Transforms/Utils/AddrModeMatcher.cpp b/llvm/lib/Transforms/Utils/AddrModeMatcher.cpp
index 0f9dfdd..40e151c 100644
--- a/llvm/lib/Transforms/Utils/AddrModeMatcher.cpp
+++ b/llvm/lib/Transforms/Utils/AddrModeMatcher.cpp
@@ -201,7 +201,7 @@
     break;
   }
   //case Instruction::Or:
-  // TODO: We can handle "Or Val, Imm" iff this OR is equivalent to an ADD.
+  // TODO: We can handle "Or Val, Imm" if this OR is equivalent to an ADD.
   //break;
   case Instruction::Mul:
   case Instruction::Shl: {