Re: patch for PR61578

[Jeff Law <law at redhat dot com>]

On 09/24/2015 02:41 PM, Vladimir Makarov wrote:
>    The following patch solves the 2nd case of
>
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61578
>
>    I did a lot of benchmarking of different heuristics in hard reg cost
> propagation in IRA.  This is the best what I found.  The patch improves
> stably code size of SPEC2000 and its score although it is not that
> significant.
>
>    The patch was tested and bootstrapped on x86-64.
>
>    Committed as rev. 228097.
>
> 2015-09-24  Vladimir Makarov  <vmakarov@redhat.com>
>
>          PR target/61578
>          * ira-color.c (update_allocno_cost): Add parameter.
>          (update_costs_from_allocno): Decrease conflict cost.  Pass the new
>          parameter.
FWIW, I did a quick scan for some of those old BZs.  None were improved. 
 Sigh.

jeff