From: Richard Guenther <richard.guenther@gmail.com>
To: "Paulo J. Matos" <pocmatos@gmail.com>
Cc: gcc@gcc.gnu.org
Subject: Re: Clustering switch cases
Date: Wed, 01 Sep 2010 09:33:00 -0000 [thread overview]
Message-ID: <AANLkTinkoGLYQS=n9L1zi8APEPTxJ8J4u+j313BgU8qn@mail.gmail.com> (raw)
In-Reply-To: <yayvd6peskk.fsf@alma.europe.root.pri>
On Wed, Sep 1, 2010 at 11:11 AM, Paulo J. Matos <pocmatos@gmail.com> wrote:
> Richard Guenther <richard.guenther@gmail.com> writes:
>
>>>
>>> I'd kinda hope that doing the optimization at the tree level means expand_case
>>> doesn't have to handle both types. The tree code converts sparse case ranges
>>> to explicit conditionals (or a switch on a compact perfect hash), so anything
>>> left to RTL expansion must be a jump table.
>>
>
> You are right, I haven't thought about it but it does make sense. If I
> want to provide a patch for this, would it be ok if its a patch against
> gcc 4.4.4, or would it be better if its against the latest 4.5.1? Is
> there any policy regarding this?
Patches should be submitted against SVN trunk head as this is a new
feature and thus will not go on the 4.4 or 4.5 branches.
Richard.
next prev parent reply other threads:[~2010-09-01 9:33 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-27 13:49 Paulo J. Matos
2010-08-27 15:03 ` Ian Lance Taylor
2010-08-27 15:09 ` Paulo J. Matos
2010-08-27 15:27 ` Richard Guenther
2010-08-28 0:21 ` Xinliang David Li
2010-08-28 11:08 ` Paulo J. Matos
2010-08-31 15:59 ` Rahul Kharche
[not found] ` <201009010034.18924.paul@codesourcery.com>
2010-09-01 8:39 ` Richard Guenther
2010-09-01 9:15 ` Paulo J. Matos
2010-09-01 9:33 ` Richard Guenther [this message]
2010-09-01 12:37 ` Paulo J. Matos
[not found] ` <D84AB18A31AC674EBE9B5300634A800601BF0B0932@EXCHANGEVS.IceraSemi.local>
[not found] ` <AANLkTinFhrgJw3Wz8aLhBU6PMYpJzBFTRxLUH3eoz4M0@mail.gmail.com>
[not found] ` <4D60B0700D1DB54A8C0C6E9BE691637008965A28@EXCHANGEVS.IceraSemi.local>
[not found] ` <AANLkTinkjc4Y9baHXXK7v3ibQNwMtwGhA_oGmaFbykkA@mail.gmail.com>
2010-09-03 10:29 ` Rahul Kharche
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