Ma Lin <malin...@163.com> added the comment:
Today I tested with msvc2022-preview, `__forceinline` attribute will not hang
the build.
64-bit PGO builds:
28d28e0~1,vc2022 : baseline
28d28e0~1+F,vc2022 : 1.02x slower <1>
28d28e0,vc2022 : 1.03x slower <2>
28d28e0+F,vc2022 : 1.03x slower
3.10 final,vc2022 : 1.03x slower
3.10 final+F,vc2022: 1.03x slower
28d28e0~1,vc2019 : 1.00x slower <3>
28d28e0~1 is the last fast commit, 28d28e0 is the first slow commit.
`+F` means add `__forceinline` attribute to all inline functions in object.h
vc2019 and vc2022 are the latest version.
<1> Forcing inline is slower.
<2> 28d28e0 is still slow, but not that much.
<3> Normally, msvc2019 and msvc2022 have the same performance.
Is it possible to write a PGO profile for 28d28e0?
https://github.com/python/cpython/commit/28d28e053db6b69d91c2dfd579207cd8ccbc39e7
msvc2022 will be released in November this year, and maybe subsequent versions
can be built with msvc2022.
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