Patch drop: fwprop.c patch for neon-strided-load-extract

[Richard Sandiford]

Ramana Radhakrishnan <ramana.radhakrishnan at linaro.org> writes:
> On 29 December 2011 10:21, Richard Sandiford
> <richard.sandiford at linaro.org> wrote:
>> The remaining change for neon-strided-load-extract is to allow fwprop.c
>> to propagate:
>>
>>    (set (reg X) (subreg (reg Y) N))
>>
>> even if no further simplifications are possible.  I posted the original
>> patch for comments here:
>>
>>    http://article.gmane.org/gmane.comp.gcc.patches/246180/
>>
>> and fixed the problem that H.J. spotted.  I wasn't entirely happy with
>> the benchmark results though, so it never became an RFA.
>
> When you say you weren't happy with the benchmark results - would you
> remember if it didn't show
> any significant improvements or were there significant regressions ?

There were some nice improvements but a couple of regressions.  I don't
remember the regressions being very big, but they were outside the noise,
so I wanted to explain them first.

Richard