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bpo-46841: Quicken code in-place #31888
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1% perf improvement too:
|
This is still marked as draft, what is left to do? |
There is still an awkward spot in I’m still trying to understand the code better and figure out a cleaner way of doing this. Any ideas? |
#31968 should help. |
I think it is OK to sort out the peculiarities of |
🤖 New build scheduled with the buildbot fleet by @brandtbucher for commit c8054b9 🤖 If you want to schedule another build, you need to add the ":hammer: test-with-buildbots" label again. |
Buildbot failures are all pre-existing failures and unrelated to this PR. |
This moves the bytecode to the end of the corresponding
PyCodeObject
, and quickens it in-place.Related changes:
PyCodeObject
is now more compact. I've removed the almost-always-unusedco_varnames
,co_freevars
, andco_cellvars
member caches, and rearranged someint
members to fill some holes in the struct on 64-bit builds.co_code
has been removed and replaced with_PyCode_GetCode
, andco_quickened
andco_firstinstr
have been replaced with_PyCode_CODE
._PyOpcode_Deopt
is a new mapping from all opcodes to their un-quickened forms._PyOpcode_InlineCacheEntries
is renamed to_PyOpcode_Caches
,_Py_IncrementCountAndMaybeQuicken
is renamed to_PyCode_Warmup
,_Py_Quicken
is renamed to_PyCode_Quicken
, and_co_quickened
is renamed to_co_code_adaptive
(and is now a read-onlymemoryview
).https://bugs.python.org/issue46841