Jason Ekstrand <ja...@jlekstrand.net> writes: > This series was inspired by a patch from Chris Willson entitled > "util/register_allocate: Compute transitive conflicts using 2-passes" > > The basic idea is the same: Instead of marking transitive conflicts as you > go, just mark conflicts with the base register up-front and apply > transitivity later. One nice result of this is that with this and > pre-calculated q-values, we can get rid of the expensive conflict lists > that we build inside the allocator. This takes a full piglit run on 32-bit > baytrail from about 28 minutes to 22 due to the reduction in screen > creation time. > > The last patch makes BITSET_WORD a 64-bit value on 64-bit systems. I don't > actually have perf numbers for that, but it should help ra setup as well as > liveness analysis and a whole host of other compiler tasks.
Patch 1-4 are: Reviewed-by: Eric Anholt <e...@anholt.net>
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