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.
Didn't we have a handful of missed optimization BZs that we speculated
might be helped by propagation of hard register costs? Might not be a
bad idea to review those and see if any are magically fixed now.
jeff
