Postgres Pro
Downloads
Home   >   mailing lists

Clang optimiser vs preproc.c - Mailing list pgsql-hackers

From Thomas Munro
Subject Clang optimiser vs preproc.c
Date
Msg-id CA+hUKGLvJ7-=fS-J9kN=aZWrpyqykwqCBbxXLEhUa9831dPFcg@mail.gmail.com
Whole thread Raw
Responses Re: Clang optimiser vs preproc.c
List pgsql-hackers
Tree view 
Hi,

FYI, it looks like there is a big jump in CPU time to compile preproc.c at -O2:

clang15: ~16s
clang16: ~211s
clang17: ~233s

First noticed on FreeBSD (where the system cc is now clang16), but
reproduced also on Debian (via apt.llvm.org packages).

pgsql-hackers by date:

Previous
From: Thomas Munro
Date:
Subject: Re: encoding affects ICU regex character classification
Next
From: Tom Lane
Date:
Subject: Re: Clang optimiser vs preproc.c