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Date: Wed, 01 Sep 2010 09:33:00 -0000
Message-ID: <AANLkTinkoGLYQS=n9L1zi8APEPTxJ8J4u+j313BgU8qn@mail.gmail.com>
Subject: Re: Clustering switch cases
From: Richard Guenther <richard.guenther@gmail.com>
To: "Paulo J. Matos" <pocmatos@gmail.com>
Cc: gcc@gcc.gnu.org
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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 expa=
nd_case
>>> doesn't have to handle both types. =A0The tree code converts sparse cas=
e ranges
>>> to explicit conditionals (or a switch on a compact perfect hash), so an=
ything
>>> 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.