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Re: ping ancient MIPS: missed optimization patch

From: Richard Sandiford <rdsandiford at googlemail dot com>
To: Andrew Pinski <pinskia at gmail dot com>
Cc: Sandra Loosemore <sandra at codesourcery dot com>, gcc-patches at gcc dot gnu dot org
Date: Sun, 29 Jul 2012 08:34:54 +0100
Subject: Re: ping ancient MIPS: missed optimization patch
References: <5012E8B5.2060001@codesourcery.com> <CA+=Sn1kjCPfqzvZ2CmBVGVxGk_U1BXPtbHazROLBpE9RBxoV4A@mail.gmail.com>

Andrew Pinski <pinskia@gmail.com> writes:
> On Fri, Jul 27, 2012 at 12:15 PM, Sandra Loosemore
> <sandra@codesourcery.com> wrote:
>> Richard,
>>
>> This ancient patch to tweak mips_legitimize_address
>>
>> http://gcc.gnu.org/ml/gcc/2008-11/msg00294.html
>>
>> seems to never have been applied.  Do you have any idea whether this is
>> still a useful change?  The test case given in the first message in that
>> thread no longer reproduces with a recent mainline build
>
> I think http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699#c9 was the
> change which fixes the original testcase.

Yeah.  Adam's patch was a much better fix than my quick hack above.
It exposed the requirements to the rtl optimisers rather than hiding
them in the target code.

Richard

References:
- ping ancient MIPS: missed optimization patch
  - From: Sandra Loosemore
- Re: ping ancient MIPS: missed optimization patch
  - From: Andrew Pinski

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