[PATCH] D87939: [PeepholeOptimizer] Enhance the redundant COPY elimination.

[Matt Arsenault via Phabricator via llvm-commits]

arsenm accepted this revision.
arsenm added inline comments.


================
Comment at: llvm/test/CodeGen/AMDGPU/GlobalISel/extractelement.i128.ll:301
 ; GFX9-NEXT:    s_load_dwordx16 s[0:15], s[2:3], 0x0
-; GFX9-NEXT:    v_lshlrev_b32_e32 v2, 1, v0
-; GFX9-NEXT:    v_cmp_eq_u32_e32 vcc, 1, v2
+; GFX9-NEXT:    v_lshlrev_b32_e32 v0, 1, v0
+; GFX9-NEXT:    v_cmp_eq_u32_e32 vcc, 1, v0
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I'm surprised there are so many changes here, but I guess it's probably papering over a number of combines that are missing


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D87939/new/

https://reviews.llvm.org/D87939