[PATCH] D86547: [compiler-rt][builtins] Use c[tl]zsi macro instead of __builtin_c[tl]z

Fangrui Song via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Sun Sep 20 10:50:53 PDT 2020

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MaskRay added a comment.

The `(aWidth - 1) - clzsi(a)` change is correct, but why is the ctz change?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D86547/new/

https://reviews.llvm.org/D86547

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