[PATCH] D61178: caseFoldingDjbHash: simplify and make the US-ASCII fast path faster

[Fangrui Song via Phabricator via llvm-commits]

MaskRay added a comment.

I measured 1.8x speedup on the corpus of `readelf -s clang | awk '{print $8}'` (purely US-ASCII)..


Repository:
  rL LLVM

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  https://reviews.llvm.org/D61178/new/

https://reviews.llvm.org/D61178