[issue37774] Micro-optimize vectorcall using PY_LIKELY
STINNER Victor
report at bugs.python.org
Tue Aug 13 07:23:26 EDT 2019
STINNER Victor <vstinner at redhat.com> added the comment:
> That's certainly true. The question is whether we want to optimize also non-PGO builds.
If it's an optimization, can you show a benchmark to validate that it's really faster as expected?
I tried for 6 months to run benchmarks without PGO and it was a loss of time: not building with PGO lead to random performances and so can easily lead to bad optimization decisions.
See my article: https://vstinner.github.io/journey-to-stable-benchmark-deadcode.html
I wrote a serie of articles:
https://vstinner.readthedocs.io/benchmark.html#my-articles
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