From: Richard Biener <richard.guenther@gmail.com>
To: Eric Botcazou <ebotcazou@adacore.com>
Cc: gcc-patches@gcc.gnu.org
Subject: Re: [RFC] optimize x - y cmp 0 with undefined overflow
Date: Tue, 27 May 2014 16:19:00 -0000 [thread overview]
Message-ID: <e72dd481-e62f-434f-b6e8-cfc54eba61a9@email.android.com> (raw)
In-Reply-To: <1520919.Q3zy2vWhEX@polaris>
On May 27, 2014 6:12:58 PM CEST, Eric Botcazou <ebotcazou@adacore.com> wrote:
>> I'm asking to merge them (move them to fold_comparison).
>
>Done (in the end the patch removes more lines than it adds :-).
That's what I like!
>Tested on x86_64-suse-linux with no regressions.
OK.
Thanks,
Richard.
>
>2014-05-27 Eric Botcazou <ebotcazou@adacore.com>
>
> * fold-const.c (fold_comparison): Clean up and extend X +- C1 CMP C2
> to X CMP C2 -+ C1 transformation to EQ_EXPR/NE_EXPR.
> Add X - Y CMP 0 to X CMP Y transformation.
> (fold_binary_loc) <EQ_EXPR/NE_EXPR>: Remove same transformations.
>
>
>2014-05-27 Eric Botcazou <ebotcazou@adacore.com>
>
> * gcc.dg/fold-compare-8.c: New test.
> * gcc.dg/Wstrict-overflow-25.c: Likewise.
prev parent reply other threads:[~2014-05-27 16:19 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-26 10:24 Eric Botcazou
2014-05-26 12:55 ` Richard Biener
2014-05-27 9:26 ` Eric Botcazou
2014-05-27 9:42 ` Richard Biener
2014-05-27 10:00 ` Eric Botcazou
2014-05-27 10:12 ` Richard Biener
2014-05-30 8:49 ` Eric Botcazou
2014-06-02 10:36 ` Richard Biener
2014-06-02 10:37 ` Richard Biener
2014-06-03 8:13 ` Eric Botcazou
2014-06-03 11:00 ` Richard Biener
2014-06-06 10:54 ` Eric Botcazou
2014-06-06 15:45 ` Richard Biener
2014-06-20 9:40 ` Eric Botcazou
2014-06-24 10:34 ` Richard Biener
2014-09-29 23:01 ` Eric Botcazou
2014-05-27 16:14 ` Eric Botcazou
2014-05-27 16:19 ` Richard Biener [this message]
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