[PATCH] D45265: [PowerPC] Replace the Post RA List Scheduler with the Machine Scheduler

[Stefan Pintilie via Phabricator via llvm-commits]

stefanp added a comment.

Ran a series of tests on this patch.
Overall the results are positive. I'm going to list the degradations.

SPEC 2006
lbm - degrades 7.5% 
overall geomean - unchanged

SPEC2017
perlbench - degrades 2.0%
lbm - degrades 2.0%
overall geomean - 1.5% improvement!

lbm 
MultiSource/Benchmarks/TSVC/IndirectAddressing-dbl/IndirectAddressing-dbl - degrades 6%
MultiSource/Applications/viterbi/viterbi - degrades 5%
MultiSource/Benchmarks/TSVC/GlobalDataFlow-dbl/GlobalDataFlow-dbl - degrades 4%
overall geomean - unchanged

Other than the 7.5% degradation for lbm I was not able to find anything that was really worrying. I'm looking at that degradation now. However, that fix can be future work.


https://reviews.llvm.org/D45265