[llvm] [AMDGPU] Lazily emit waitcnts on function entry (PR #73122)
Jay Foad via llvm-commits
llvm-commits at lists.llvm.org
Wed Dec 6 06:55:33 PST 2023
================
@@ -171,15 +171,15 @@ define <2 x i16> @v_add_v2i16_neg_inline_imm_splat(<2 x i16> %a) {
;
; GFX9-LABEL: v_add_v2i16_neg_inline_imm_splat:
; GFX9: ; %bb.0:
-; GFX9-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; GFX9-NEXT: v_mov_b32_e32 v1, 0xffc0ffc0
----------------
jayfoad wrote:
Stepping back a bit, it might make more sense to change the ABI to say that expcnt must be zero at a function call boundary. I suspect there aren't any realistic cases where it would be useful to make a function call with an un-completed export in flight. But I don't want to change the ABI in this patch.
https://github.com/llvm/llvm-project/pull/73122
More information about the llvm-commits
mailing list