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

llvm-svn: 164768
diff --git a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
index 4f8aa4c..e8f4d16 100644
--- a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -74,7 +74,7 @@
       return CurDAG->getTargetConstant(Imm, PPCLowering.getPointerTy());
     }
 
-    /// isRunOfOnes - Returns true if Val consists of one contiguous run of 1s
+    /// isRunOfOnes - Returns true iff Val consists of one contiguous run of 1s
     /// with any number of 0s on either side.  The 1s are allowed to wrap from
     /// LSB to MSB, so 0x000FFF0, 0x0000FFFF, and 0xFF0000FF are all runs.
     /// 0x0F0F0000 is not, since all 1s are not contiguous.