[PATCH] D142782: [AMDGPU] Add basic support for extended i8 perm matching

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


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Comment at: llvm/test/CodeGen/AMDGPU/fast-unaligned-load-store.global.ll:64
 ; GFX11-NEXT:    s_waitcnt vmcnt(0)
-; GFX11-NEXT:    v_lshl_or_b32 v0, v0, 16, v2
 ; GFX11-NEXT:    s_setpc_b64 s[30:31]
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Yes, this is worse. Should avoid cases that can use v_lshl_or_b32


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D142782/new/

https://reviews.llvm.org/D142782