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Re: optimization/9319: slower code generated for simple loop on linux
- From: ebotcazou at gcc dot gnu dot org
- To: amnon_cohen at yahoo dot com, ebotcazou at gcc dot gnu dot org, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, nobody at gcc dot gnu dot org
- Date: 16 Jan 2003 11:58:12 -0000
- Subject: Re: optimization/9319: slower code generated for simple loop on linux
- Reply-to: ebotcazou at gcc dot gnu dot org, amnon_cohen at yahoo dot com, ebotcazou at gcc dot gnu dot org, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, nobody at gcc dot gnu dot org, gcc-gnats at gcc dot gnu dot org
Synopsis: slower code generated for simple loop on linux
Responsible-Changed-From-To: unassigned->ebotcazou
Responsible-Changed-By: ebotcazou
Responsible-Changed-When: Thu Jan 16 03:58:11 2003
Responsible-Changed-Why:
Investigating.
State-Changed-From-To: open->feedback
State-Changed-By: ebotcazou
State-Changed-When: Thu Jan 16 03:58:11 2003
State-Changed-Why:
Could you provide us with more details ? What does gcc -v output for each compiler ? Could you post the assembly code generated for the loop by each compiler (gcc -O3 -S) ? On what hardware did you experience the performance hit ?
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9319