bpo-45116 Add a warm-up for PGO training on Windows #28631
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I don't feel confident to land this. It seems to me for the PR description that this is speculative work. I don't want us to implement code that fights the compiler in what may be some implementation detail and may not even work in all versions |
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This is another attempt to fix some slowdowns of 3.10.
ceval-loop of 3.10 has been simplified and MSVC profiler seem to treat the whole loop as a cold section. More probe counts may be needed for
tracing_dispatch:section.https://bugs.python.org/issue45116