Date: Mon, 5 Apr 1999 22:25:32 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Alex Zepeda <garbanzo@hooked.net> Cc: current@FreeBSD.ORG Subject: Re: EGCS optimizations Message-ID: <199904060525.WAA04269@apollo.backplane.com> References: <Pine.BSF.4.05.9904052216100.55808-100000@zippy.dyn.ml.org>
next in thread | previous in thread | raw e-mail | index | archive | help
:Totally informally, I replaced libc (compiled with -O2) with one compiled
:with -mpentiumpro and -O6, and compiling kdebase seemed to run a bit
:slower (GNU make took longer to traverse directories and egcs took a bit
:longer to run).
:
:> Which leads me to believe that using -Os might be beneficial.
:
:Have you tried anything beyond -O2?
:
:- alex
There is nothing beyond -O2. Well, there's -O3, which tries to
inline static functions, but that typically isn't beneficial because
it really bloats up the code and subroutine calls on intel cpus are
very fast.
The only other optimization that might be useful is -fomit-frame-pointer,
but it makes debugging impossible.
-Matt
Matthew Dillon
<dillon@backplane.com>
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199904060525.WAA04269>