3 Commits

Author	SHA1	Message	Date
Qiu Chaofan	87c773082a	[PowerPC] Exploit VSX rounding instrs for rint ... Exploit native VSX rounding instruction, x(v|s)r(d|s)pic, which does rounding using current rounding mode. According to C standard library, rint may raise INEXACT exception while nearbyint won't. Reviewed By: lkail Differential Revision: https://reviews.llvm.org/D72685	2020-02-13 20:59:50 +08:00
Nemanja Ivanovic	781b78a361	[PowerPC] Only legalize FNEARBYINT with unsafe fp math ... Commit 0f0330a78709 legalized these nodes on PPC without consideration of unsafe math which means that we get inexact exceptions raised for nearbyint. Since this doesn't conform to the standard, switch this legalization to depend on unsafe fp math.	2020-01-02 13:45:54 -06:00
Nemanja Ivanovic	0f0330a787	[PowerPC] Legalize rounding nodes ... VSX provides a full complement of rounding instructions yet we somehow ended up with some of them legal and others not. This just legalizes all of the FP rounding nodes and the FP -> int rounding nodes with unsafe math. Differential revision: https://reviews.llvm.org/D69949	2019-12-30 08:03:53 -06:00