[llvm-dev] An alternative way to resolve complex LSR solutions (need perf testing)

David Green via llvm-dev
2017-02-23T12:01:11Z

Hello,

I originally missed this email, but we did notice the results in our internal
benchmarks. Some results are up, some are down, as you might expect. A good
place to start for results would be the LNT results here:
http://llvm.org/perf/db_default/v4/nts/daily_report/2017/2/21?day_start=16

They show Shootout-C++/matrix-c++ down, and internally we see Shootout/matrix is
down in more configurations. We have some other internal benchmarks with similar
code patterns to the matrix results being down too. They look like they have
similar nested for loop and similar access patterns.

We don't have compile time numbers handy, but the LNT results above seem to
show them near the bottom. They can sometimes be noisy, but hopefully may be of
help.
Dave