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/Transforms/InstCombine/InstCombineMulDivRem.cpp b/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
index 6d81d6d..3361a1e 100644
--- a/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
+++ b/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
@@ -550,7 +550,7 @@
     APInt Mask(APInt::getSignBit(I.getType()->getPrimitiveSizeInBits()));
     if (MaskedValueIsZero(Op0, Mask)) {
       if (MaskedValueIsZero(Op1, Mask)) {
-        // X sdiv Y -> X udiv Y, if X and Y don't have sign bit set
+        // X sdiv Y -> X udiv Y, iff X and Y don't have sign bit set
         return BinaryOperator::CreateUDiv(Op0, Op1, I.getName());
       }
       
@@ -692,7 +692,7 @@
   if (I.getType()->isIntegerTy()) {
     APInt Mask(APInt::getSignBit(I.getType()->getPrimitiveSizeInBits()));
     if (MaskedValueIsZero(Op1, Mask) && MaskedValueIsZero(Op0, Mask)) {
-      // X srem Y -> X urem Y, if X and Y don't have sign bit set
+      // X srem Y -> X urem Y, iff X and Y don't have sign bit set
       return BinaryOperator::CreateURem(Op0, Op1, I.getName());
     }
   }