public inbox for gcc-prs@sourceware.org
help / color / mirror / Atom feed
From: bero@bekkoame.ne.jp
To: gcc-gnats@gcc.gnu.org
Cc: amylaar@redhat.com;, aoliva@redhat.com
Subject: optimization/5075: sh-elf target optimize worse, save pr in leaf function
Date: Tue, 11 Dec 2001 08:06:00 -0000	[thread overview]
Message-ID: <20011211155456.25974.qmail@sources.redhat.com> (raw)


>Number:         5075
>Category:       optimization
>Synopsis:       sh-elf target optimize worse, save pr in leaf function
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Dec 11 08:06:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     Takahiro Ishio
>Release:        3.0.2
>Organization:
>Environment:
gcc-3.0.2,cross target for sh-elf,host cygwin on windows2000
Configured with: ../gcc-3.0.2/configure --target=sh-elf --with-gnu-as --with-gnu
-ld --enable-language=c,c++ --with-newlib
>Description:
sh-elf target optimize worse,
save pr in leaf function

for example,-O2 -fomit-frame-pointer

int func(int a,int b)
{
  return a+b;
}

3.0.1 or before
	mov	r4,r0
	rts	
	add	r5,r0

3.0.2
	sts.l	pr,@-r15
	mov	r4,r0
	lds.l	@r15+,pr
	rts	
	add	r5,r0
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:


                 reply	other threads:[~2001-12-11 16:06 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

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=20011211155456.25974.qmail@sources.redhat.com \
    --to=bero@bekkoame.ne.jp \
    --cc=amylaar@redhat.com \
    --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).