[PATCH] D104790: [x86] fix mm*_undefined* intrinsics to use arbitrary frozen bit pattern

[Juneyoung Lee via Phabricator via cfe-commits]

aqjune added a comment.

I couldn't find end-to-end tests for checking assembly generation.
To check whether this is working ok, which tests should I write and how would it look like?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D104790/new/

https://reviews.llvm.org/D104790