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Re: Optimization: RedHat vs. GCC v3.0x?
- To: <swsnyder at home dot com>, <gcc at gcc dot gnu dot org>
- Subject: Re: Optimization: RedHat vs. GCC v3.0x?
- From: "Tim Prince" <tprince at computer dot org>
- Date: Sat, 29 Sep 2001 08:25:38 -0700
- References: <01092909381101.01546@mercury.snydernet.lan>
I can't get nearly the performance from the redhat compiler as
from gcc-3.1. On my own tests, gcc-3.1 has 80% of the
performance of the Intel compilers (but not when SIMD kicks in).
If redhat has specific optimizations, they must apply only to
kernel or drivers. If you know specific situations where gcc-3.1
should generate better code, talk to the talented developers.
ymmv.
----- Original Message -----
From: "Steve Snyder" <swsnyder@home.com>
To: <gcc@gcc.gnu.org>
Sent: Saturday, September 29, 2001 7:38 AM
Subject: Optimization: RedHat vs. GCC v3.0x?
> RedHat , in releasing their own version of the GCC compiler for
their v7.x
> distributions, stated that one of their reasons for doing so
was
> performance. It was said that the RedHat-specific compiler
generated
> better x86 code than the as-yet-unreleased GCC v3.00.
>
> How does this comparison stand now? Have the GCC v3.0[012]
releases
> improved upon this alleged deficiency in x86 code generation?
>
> Thanks.