[PATCH] D105836: [AMDGPU] Add TII::isAmbientPhysRegUse() to allow VOP rematerialization

[Krzysztof Parzyszek via Phabricator via llvm-commits]

kparzysz added a comment.

The definition of "ambient" is so vague that I have no idea what it's trying to convey.

There is already a concept of "pristine" registers, which sounds similar.  How is this different?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D105836/new/

https://reviews.llvm.org/D105836