Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. See: http://en.wikipedia.org/wiki/If_and_only_if Commit 164767

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164768 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelDAGToDAG.cpp b/lib/Target/ARM/ARMISelDAGToDAG.cpp
index e9f0c8a..1eea0cc 100644
--- a/lib/Target/ARM/ARMISelDAGToDAG.cpp
+++ b/lib/Target/ARM/ARMISelDAGToDAG.cpp
@@ -2117,7 +2117,7 @@
   if (N->getOpcode() == ISD::AND) {
     if (isOpcWithIntImmediate(N, ISD::AND, And_imm)) {
 
-      // The immediate is a mask of the low bits if imm & (imm+1) == 0
+      // The immediate is a mask of the low bits iff imm & (imm+1) == 0
       if (And_imm & (And_imm + 1))
         return NULL;