thakis added a comment.

In D100807#2718006 <https://reviews.llvm.org/D100807#2718006>, @arphaman wrote:

> It appears that your bot is running on a Mac with M1 
> <https://reviews.llvm.org/M1> is that correct? Which OS do you have 
> installed? Thanks

Correct, it's an M1 <https://reviews.llvm.org/M1> Mini. I had to get 
check-clang and check-llvm to pass on M1 <https://reviews.llvm.org/M1> 
(PR46647, PR46644) so it looks like nobody else is running this config (why 
not?). check-builtins is e.g. still failing (PR49918). Kind of on that note, 
the clang y'all ship with Xcode is > 5% slower than it needs to be due to you 
apparently building it with profiles collected on an intel machine instead of 
with profiles collected on an arm machine (data: 
https://bugs.chromium.org/p/chromium/issues/detail?id=1103322#c34 There's a 
prebuilt binary at 
http://commondatastorage.googleapis.com/chromium-browser-clang/Mac_arm64/clang-llvmorg-13-init-7296-ga749bd76-2.tgz
 with profiles collected on arm that is ~ 12.5% faster than Xcode's clang, see 
comment 29 on that same crbug).

The bot is running macOS 11.3 IIRC.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D100807/new/

https://reviews.llvm.org/D100807

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