From: Ralf Baechle <ralf@linux-mips.org>
To: Richard Henderson <rth@redhat.com>,
"Maciej W. Rozycki" <macro@linux-mips.org>,
Richard Sandiford <rsandifo@redhat.com>,
gcc-patches@gcc.gnu.org, linux-mips@linux-mips.org
Subject: Re: [patch] MIPS/gcc: Revert removal of DImode shifts for 32-bit targets
Date: Fri, 23 Jul 2004 23:12:32 +0200 [thread overview]
Message-ID: <20040723211232.GB5138@linux-mips.org> (raw)
In-Reply-To: <20040723202703.GB30931@redhat.com>
On Fri, Jul 23, 2004 at 01:27:03PM -0700, Richard Henderson wrote:
> > Sometimes putting these eight (or nine for ashrdi3) instructions
> > inline would be a performance win.
>
> Sometimes, maybe. I suspect you'll find that in general it's
> nothing but bloat.
With a bit of hand waiving because haven't done benchmarks I guess Richard
might be right. The subroutine calling overhead on modern processors is
rather low and smaller code means better cache hit rates ...
Ralf
next prev parent reply other threads:[~2004-07-23 21:12 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-19 15:35 [patch] MIPS/gcc: Revert removal of DImode shifts for 32-bit targets Maciej W. Rozycki
2004-07-19 16:59 ` Richard Sandiford
2004-07-19 17:32 ` [patch] MIPS/gcc: Revert removal of DImode shifts for 32-bittargets David Edelsohn
2004-07-19 17:33 ` [patch] MIPS/gcc: Revert removal of DImode shifts for 32-bit targets Maciej W. Rozycki
2004-07-19 17:37 ` Richard Sandiford
2004-07-19 21:38 ` Richard Henderson
2004-07-23 14:41 ` Maciej W. Rozycki
2004-07-23 20:27 ` Richard Henderson
2004-07-23 21:12 ` Ralf Baechle [this message]
2004-07-26 11:56 ` Maciej W. Rozycki
2004-08-02 20:03 ` Nigel Stephens
2004-08-03 5:30 ` Richard Sandiford
2004-08-03 9:22 ` Nigel Stephens
2004-08-03 9:36 ` Richard Sandiford
2004-08-03 9:54 ` Nigel Stephens
2004-08-04 19:57 ` Maciej W. Rozycki
2004-08-04 20:37 ` Nigel Stephens
2004-08-04 20:54 ` Maciej W. Rozycki
2004-08-04 23:39 ` Nigel Stephens
2004-08-07 19:01 ` Richard Sandiford
2004-08-09 22:08 ` Richard Henderson
2004-08-10 5:30 ` Richard Sandiford
2004-08-10 23:20 ` Richard Henderson
2004-08-11 0:24 ` Andreas Schwab
2004-08-11 0:40 ` Paul Brook
2004-08-11 4:32 ` Richard Henderson
2004-08-31 19:51 ` Richard Sandiford
2004-09-03 6:53 ` Richard Henderson
2004-09-03 7:05 ` Richard Sandiford
2004-09-03 7:08 ` Richard Henderson
2004-09-03 7:11 ` Richard Sandiford
2004-09-03 7:20 ` Richard Henderson
2004-09-03 7:29 ` Richard Sandiford
2004-09-03 20:15 ` Richard Henderson
2004-09-04 8:53 ` Richard Sandiford
2004-09-05 0:03 ` Richard Henderson
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=20040723211232.GB5138@linux-mips.org \
--to=ralf@linux-mips.org \
--cc=gcc-patches@gcc.gnu.org \
--cc=linux-mips@linux-mips.org \
--cc=macro@linux-mips.org \
--cc=rsandifo@redhat.com \
--cc=rth@redhat.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.