[PATCH] D141310: [clang] add -Wcompare-function-pointers

[Fangrui Song via Phabricator via cfe-commits]

MaskRay added a comment.

I have some notes about `--icf={safe,all}`: 
https://maskray.me/blog/2020-11-15-explain-gnu-linker-options#icfall-and---icfsafe

I think this diagnostic has some value (and I appreciate that it can be 
implemented so little code!). Some `--icf=all` issues like using function 
addresses as map keys cannot be detected, though.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D141310/new/

https://reviews.llvm.org/D141310

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