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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Do not build the freeze module twice in case of Windows PGO builds","articleBody":"# Feature or enhancement\n\n### Proposal:\n\nFrom https://github.com/python/cpython/pull/129907#issuecomment-2648775431\n\u003e Avoiding the rebuild of `_freeze_module` and the refreezing would be nice, but it's not a huge deal (a few seconds in a ~hour long release process). Don't mix it in with this PR.\n\nThis is another low hanging fruit to make the Windows PGO build slightly faster (like https://github.com/python/cpython/issues/90281 did) by not building the _freeze_module again in the PGUpdate phase.\n\nThis will decrease both the MSVC and the clang-cl PGO build time (https://github.com/python/cpython/issues/130090).\n\nIn case of clang-cl, this saves me up to 40 seconds on my machine. Please see https://github.com/python/cpython/pull/131005 `Details pgupdate build times` for more numbers\n\n### Has this already been discussed elsewhere?\n\nThis is a minor feature, which does not need previous discussion elsewhere\n\n### Links to previous discussion of this feature:\n\n_No response_\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-130420\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/chris-eibl","@type":"Person","name":"chris-eibl"},"datePublished":"2025-02-21T19:01:04.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/130419/cpython/issues/130419"}