[PATCH] D138755: [Clang][CodeGen] Use poison instead of undef for extra argument in __builtin_amdgcn_mov_dpp [NFC]

[Matt Arsenault via Phabricator via cfe-commits]

arsenm accepted this revision.
arsenm added a comment.
This revision is now accepted and ready to land.

I think this is OK. It’s use of uninitialized value, those uninitialized values just happen to come from inactive lanes.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D138755/new/

https://reviews.llvm.org/D138755