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Re: combiner fix, PR45966

From: "H.J. Lu" <hjl dot tools at gmail dot com>
To: Bernd Schmidt <bernds at codesourcery dot com>
Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, marcus dot shawcroft at arm dot com
Date: Sun, 31 Oct 2010 08:50:34 -0700
Subject: Re: combiner fix, PR45966
References: <4CB36977.7000401@codesourcery.com> <AANLkTimrSCWDdcs8Ef678fBZvuNTqTRYXUbKYsc5WTFF@mail.gmail.com>

On Sun, Oct 31, 2010 at 8:17 AM, H.J. Lu <hjl.tools@gmail.com> wrote:
> On Mon, Oct 11, 2010 at 12:45 PM, Bernd Schmidt <bernds@codesourcery.com> wrote:
>> The combine-4 patch caused PR45966. ?We have a 4->2 combination, and i0
>> feeds i1 which feeds i2. ?When substituting, we only check i0_feeds_i2
>> and i1_feeds_i2; we also need to check the i0_feeds_i1/i1_feeds_i2 chain
>> and substitute accordingly.
>>
>> Bootstrapped and regression tested on i686-linux; ok?
>>
>
> This caused:
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46248
>

It also caused:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46212


-- 
H.J.

References:
- combiner fix, PR45966
  - From: Bernd Schmidt
- Re: combiner fix, PR45966
  - From: H.J. Lu

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