On 09/25/2015 12:57 PM, Jeff Law wrote:
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 <vmaka...@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.
Thanks for checking them, Jeff. I don't think the work on PR61578 has
been finished. I guess people will present other cases which should be
improved and may be their solutions will solve the other PRs.
