Simon Pilgrim cd4d913336 [DAGCombiner] Dropped explicit (sra 0, x) -> 0 and (sra -1, x) -> 0 folds.
These are both handled (and tested) by the earlier ComputeNumSignBits == EltSizeInBits fold.

llvm-svn: 302651
2017-05-10 13:06:26 +00:00
..
2016-04-18 09:17:29 +00:00