2 Commits

Author	SHA1	Message	Date
Richard Sandiford	95f7ba988b	Replace sra with srl if a single sign bit is required ... E.g. (and (sra (i32 x) 31) 2) -> (and (srl (i32 x) 30) 2). llvm-svn: 192884	2013-10-17 11:16:57 +00:00
Hal Finkel	4ca70100de	Fix a PPC rlwimi instruction-selection bug ... Under certain (evidently rare) circumstances, this code used to convert OR(a, AND(x, y)) into OR(a, x). This was incorrect. While there, I've added a comment to the code immediately above. llvm-svn: 185201	2013-06-28 20:00:07 +00:00