3 Commits

Author	SHA1	Message	Date
Matt Arsenault	fdf7e5830b	AMDGPU: Refactor exp instructions ... Structure the definitions a bit more like the other classes. The main change here is to split EXP with the done bit set to a separate opcode, so we can set mayLoad = 1 so that it won't be reordered before the other exp stores, since this has the special constraint that if the done bit is set then this should be the last exp in she shader. Previously all exp instructions were inferred to have unmodeled side effects. llvm-svn: 288695	2016-12-05 20:23:10 +00:00
Mehdi Amini	1fef2dd6b7	Use StringRef in Pass/PassManager APIs (NFC) ... llvm-svn: 283004	2016-10-01 02:56:57 +00:00
Matt Arsenault	321978a22d	AMDGPU: Split SILowerControlFlow into two pieces ... Do most of the lowering in a pre-RA pass. Keep the skip jump insertion late, plus a few other things that require more work to move out. One concern I have is now there may be COPY instructions which do not have the necessary implicit exec uses if they will be lowered to v_mov_b32. This has a positive effect on SGPR usage in shader-db. llvm-svn: 279464	2016-08-22 19:33:16 +00:00