[Bug tree-optimization/68654] [6 Regression] CoreMark Pro performance degradation
rguenth at gcc dot gnu.org
Tue Jan 26 12:31:00 GMT 2016
--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 37474
patch for SSA name management
This patch changes SSA name freelist management to keep the freelist sorted
and at flush_ssaname_freelist shrink num_ssa_names as much as possible.
The goal is to make used SSA names as dense as possible.
Does this patch fix the Coremark regression by chance? (I'll note that a
proper fix would change the important coalesce cost so it is carried out
regardless of SSA name order).
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