[pull] main from python:main #551
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….cache_from_source()` (GH-142204)
PyUnstable_Object_IsUniqueReferencedTemporary wasn't handling tagged ints on the evaluation stack properly.
If there are many untracked tuples, the GC will run too often, resulting in poor performance. The fix is to include untracked tuples in the "long lived" object count. The number of frozen objects is also now included since the free-threaded GC must scan those too.
…e_CopyPerfMapFile()` (#142460) Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com> Co-authored-by: Victor Stinner <vstinner@python.org> Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
There are places we use "relaxed" loads where C11 requires "consume" or stronger. Unfortunately, compilers don't really implement "consume" so fake it for our use in a way that avoids upsetting TSan.
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