From: "Richard Guenther" <richard.guenther@gmail.com>
To: "Robert Kennedy" <jimbob@google.com>
Cc: gcc-patches@gcc.gnu.org
Subject: Re: [PATCH] Fold more aggressively for trip counts
Date: Thu, 04 Jan 2007 19:54:00 -0000 [thread overview]
Message-ID: <84fc9c000701041153h64404483l207bc4d7333101f2@mail.gmail.com> (raw)
In-Reply-To: <17821.23092.925585.601518@whippen.corp.google.com>
On 1/4/07, Robert Kennedy <jimbob@google.com> wrote:
> > Well, a testcase looks like
> >
> > int foo(int a)
> > {
> > return a * 1000 > 0;
> > }
> >
> > and then check the gimple tree dump.
>
> I tried that. Somehow (I'm not sure how) it gets folded anyway without
> my change. Whatever is doing it in that context does not apply during
> the loop optimizations.
I see the condition survive until asm even with -O2 on i686.
Richard.
next prev parent reply other threads:[~2007-01-04 19:54 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-03 2:40 Robert Kennedy
2007-01-03 2:50 ` Andrew Pinski
2007-01-03 8:49 ` Paolo Bonzini
2007-01-03 13:57 ` Richard Guenther
2007-01-03 15:14 ` Daniel Berlin
2007-01-04 19:35 ` Robert Kennedy
2007-01-04 19:46 ` Richard Guenther
2007-01-04 19:49 ` Robert Kennedy
2007-01-04 19:54 ` Richard Guenther [this message]
2007-01-04 19:58 ` Robert Kennedy
2007-01-04 22:59 ` Zdenek Dvorak
2007-01-05 1:18 ` Robert Kennedy
2007-01-05 7:46 ` Zdenek Dvorak
2007-01-05 19:08 ` Robert Kennedy
2007-01-10 0:05 ` Robert Kennedy
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