public inbox for gcc-prs@sourceware.org
help / color / mirror / Atom feed
From: mrj@bigpond.net.au
To: gcc-gnats@gcc.gnu.org
Subject: optimization/5979: -fomit-frame-pointer inoperative in GCC 3.0.4 (x86)
Date: Sat, 16 Mar 2002 03:26:00 -0000 [thread overview]
Message-ID: <20020316112325.5942.qmail@sources.redhat.com> (raw)
>Number: 5979
>Category: optimization
>Synopsis: -fomit-frame-pointer inoperative in GCC 3.0.4 (x86)
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: unassigned
>State: open
>Class: pessimizes-code
>Submitter-Id: net
>Arrival-Date: Sat Mar 16 03:26:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator: Mark Reginald James
>Release: 3.0.4
>Organization:
>Environment:
System: Linux 2.4.18 i686 unknown
Architecture: i686
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ../src/configure --prefix=/usr --with-cpu=athlon
>Description:
In 3.0.4 the ebp register is used as a frame pointer despite use of the -fomit-frame-pointer option.
>How-To-Repeat:
Compile this program:
main()
{
int a=1;
}
with options -S -fomit-frame-pointer, and note used of epb
in the assembly output.
>Fix:
Change any assembly-coded function that expects epb to be unused to save and restore the epb register.
>Release-Note:
>Audit-Trail:
>Unformatted:
next reply other threads:[~2002-03-16 11:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-16 3:26 mrj [this message]
2002-04-03 2:30 rth
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20020316112325.5942.qmail@sources.redhat.com \
--to=mrj@bigpond.net.au \
--cc=gcc-gnats@gcc.gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).