[llvm-branch-commits] [llvm] AMDGPU: Fold frame indexes into s_or_b32 and s_and_b32 (PR #102345)
Stanislav Mekhanoshin via llvm-branch-commits
llvm-branch-commits at lists.llvm.org
Wed Aug 7 11:41:32 PDT 2024
================
@@ -190,31 +186,31 @@ body: |
; MUBUFW64-LABEL: name: s_and_b32__sgpr__fi_literal_offset
; MUBUFW64: liveins: $sgpr8
; MUBUFW64-NEXT: {{ $}}
- ; MUBUFW64-NEXT: $sgpr4 = S_LSHR_B32 $sgpr32, 6, implicit-def $scc
- ; MUBUFW64-NEXT: $sgpr4 = S_ADD_I32 killed $sgpr4, 80, implicit-def $scc
- ; MUBUFW64-NEXT: renamable $sgpr7 = S_AND_B32 $sgpr8, killed $sgpr4, implicit-def $scc
+ ; MUBUFW64-NEXT: renamable $sgpr4 = S_LSHR_B32 $sgpr32, 6, implicit-def dead $scc
+ ; MUBUFW64-NEXT: renamable $sgpr7 = S_ADD_I32 $sgpr4, $sgpr8, implicit-def $scc
+ ; MUBUFW64-NEXT: renamable $sgpr7 = S_AND_B32 $sgpr7, 80, implicit-def $scc
; MUBUFW64-NEXT: SI_RETURN implicit $sgpr7, implicit $scc
;
; MUBUFW32-LABEL: name: s_and_b32__sgpr__fi_literal_offset
; MUBUFW32: liveins: $sgpr8
; MUBUFW32-NEXT: {{ $}}
- ; MUBUFW32-NEXT: $sgpr4 = S_LSHR_B32 $sgpr32, 5, implicit-def $scc
- ; MUBUFW32-NEXT: $sgpr4 = S_ADD_I32 killed $sgpr4, 80, implicit-def $scc
- ; MUBUFW32-NEXT: renamable $sgpr7 = S_AND_B32 $sgpr8, killed $sgpr4, implicit-def $scc
+ ; MUBUFW32-NEXT: renamable $sgpr4 = S_LSHR_B32 $sgpr32, 5, implicit-def dead $scc
+ ; MUBUFW32-NEXT: renamable $sgpr7 = S_ADD_I32 $sgpr4, $sgpr8, implicit-def $scc
+ ; MUBUFW32-NEXT: renamable $sgpr7 = S_AND_B32 $sgpr7, 80, implicit-def $scc
; MUBUFW32-NEXT: SI_RETURN implicit $sgpr7, implicit $scc
;
; FLATSCRW64-LABEL: name: s_and_b32__sgpr__fi_literal_offset
; FLATSCRW64: liveins: $sgpr8
; FLATSCRW64-NEXT: {{ $}}
- ; FLATSCRW64-NEXT: $sgpr4 = S_ADD_I32 $sgpr32, 80, implicit-def $scc
- ; FLATSCRW64-NEXT: renamable $sgpr7 = S_AND_B32 $sgpr8, killed $sgpr4, implicit-def $scc
+ ; FLATSCRW64-NEXT: renamable $sgpr7 = S_ADD_I32 $sgpr32, $sgpr8, implicit-def $scc
+ ; FLATSCRW64-NEXT: renamable $sgpr7 = S_AND_B32 $sgpr7, 80, implicit-def $scc
; FLATSCRW64-NEXT: SI_RETURN implicit $sgpr7, implicit $scc
;
; FLATSCRW32-LABEL: name: s_and_b32__sgpr__fi_literal_offset
; FLATSCRW32: liveins: $sgpr8
; FLATSCRW32-NEXT: {{ $}}
- ; FLATSCRW32-NEXT: $sgpr4 = S_ADD_I32 $sgpr32, 80, implicit-def $scc
- ; FLATSCRW32-NEXT: renamable $sgpr7 = S_AND_B32 $sgpr8, killed $sgpr4, implicit-def $scc
+ ; FLATSCRW32-NEXT: renamable $sgpr7 = S_ADD_I32 $sgpr32, $sgpr8, implicit-def $scc
----------------
rampitec wrote:
I do not understand this. The transformation is `(s8 & (sp + 80)) ->((s8 + sp) & 80)` does not look immediately obvious.
https://github.com/llvm/llvm-project/pull/102345
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