Rafael Espindola 4ba22f0813 Revert 209903 and 210040.
The messages were

 "PR19753: Optimize comparisons with "ashr exact" of a constanst."
 "Added support to optimize comparisons with "lshr exact" of a constant."

They were not correctly handling signed/unsigned operation differences,
causing pr19958.

llvm-svn: 210393
2014-06-07 04:12:35 +00:00
..
2014-04-28 04:05:08 +00:00