[PATCH] D137705: [AMDGPU] Add DAG Combine for right-shift carry add to uaddo

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: llvm/test/CodeGen/AMDGPU/add_shr_carry.ll:50
+  %shr = lshr i64 %add.a.b, 32
+  %add.c.shr = add i64 %c, %shr
+  ret i64 %add.c.shr
----------------
This second add is superfluous to the basic pattern https://alive2.llvm.org/ce/z/aLg_Ki


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D137705/new/

https://reviews.llvm.org/D137705