[PATCH] D139422: [AMDGPU] Accelerate SIRegisterInfo::getPhysRegClass

[Carl Ritson via Phabricator via llvm-commits]

critson added a comment.

Ideally this would be a static table, but the changes required to TableGen to understand register classes for this are non-trivial.

I am seeing >0.5% speed up in compile time with this change.
So the cost of computing the mapping appears negligible compared to the benefit.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D139422/new/

https://reviews.llvm.org/D139422