4 Commits

Author	SHA1	Message	Date
Matt Arsenault	2da7aad0af	InstCombine: Don't strip convergent from intrinsic callsites ... Specific instances of intrinsic calls may want to be convergent, such as certain register reads but the intrinsic declaration is not. llvm-svn: 273188	2016-06-20 19:04:44 +00:00
Justin Lebar	7e369d0dca	[attrs] Handle convergent CallSites. ... Summary: Previously we had a notion of convergent functions but not of convergent calls. This is insufficient to correctly analyze calls where the target is unknown, e.g. indirect calls. Now a call is convergent if it targets a known-convergent function, or if it's explicitly marked as convergent. As usual, we can remove convergent where we can prove that no convergent operations are performed in the call. Originally landed as r261544, then reverted in r261544 for (incidental) build breakage. Re-landed here with no changes. Reviewers: chandlerc, jingyue Subscribers: llvm-commits, tra, jhen, hfinkel Differential Revision: http://reviews.llvm.org/D17739 llvm-svn: 263481	2016-03-14 20:18:54 +00:00
Justin Lebar	f84464712c	Revert "[attrs] Handle convergent CallSites." ... This reverts r261544, which was causing a test failure in Transforms/FunctionAttrs/readattrs.ll. llvm-svn: 261549	2016-02-22 18:24:43 +00:00
Justin Lebar	ca379cda9f	[attrs] Handle convergent CallSites. ... Summary: Previously we had a notion of convergent functions but not of convergent calls. This is insufficient to correctly analyze calls where the target is unknown, e.g. indirect calls. Now a call is convergent if it targets a known-convergent function, or if it's explicitly marked as convergent. As usual, we can remove convergent where we can prove that no convergent operations are performed in the call. Reviewers: chandlerc, jingyue Subscribers: hfinkel, jhen, tra, llvm-commits Differential Revision: http://reviews.llvm.org/D17317 llvm-svn: 261544	2016-02-22 17:51:35 +00:00