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GH-139757: JIT: Remove redundant branches to jumps in the assembly optimizer#140800

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@markshannonmarkshannon commentedOct 30, 2025•
edited by bedevere-appbot
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  • Refactor JIT assembly optimizer making instructions instances not just strings
  • Remove redundant jumps and branches where legal to do so

@markshannonmarkshannonforce-pushed theremove-redundant-branches branch 2 times, most recently from4ed4522 to26f8269CompareOctober 30, 2025 18:15
@markshannonmarkshannonforce-pushed theremove-redundant-branches branch from26f8269 to0086c59CompareOctober 30, 2025 19:26
markshannon added a commit to markshannon/cpython that referenced this pull requestDec 4, 2025
* Refactor JIT assembly optimizer making instructions instances not just strings* Remove redundant jumps and branches where legal to do so* Modifies _BINARY_OP_SUBSCR_STR_INT to avoid excessive inlining depthTEST_TEMPLATE: projects/python/templates/defaultPYTHON_OPTIONS: --configure-flags "--enable-experimental-jit"Jira: ENTLLT-8874Change-Id: I605618c92814059bc63a1d16825a66d1824f3df2
@markshannonmarkshannonforce-pushed theremove-redundant-branches branch from0086c59 to509f3e2CompareDecember 5, 2025 13:52
@markshannonmarkshannon added the 🔨 test-with-buildbotsTest PR w/ buildbots; report in status section labelDec 5, 2025
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🤖 New build scheduled with the buildbot fleet by@markshannon for commit509f3e2 🤖

Results will be shown at:

https://buildbot.python.org/all/#/grid?branch=refs%2Fpull%2F140800%2Fmerge

If you want to schedule another build, you need to add the🔨 test-with-buildbots label again.

@bedevere-botbedevere-bot removed the 🔨 test-with-buildbotsTest PR w/ buildbots; report in status section labelDec 5, 2025
StanFromIreland pushed a commit to StanFromIreland/cpython that referenced this pull requestDec 6, 2025
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The android build is currently broken.
The Windows 11 refleaks PR failures seem to be in the new profiling tests, unrelated to this PR.

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LGTM. I've already reviewed it internally.

@markshannonmarkshannon merged commite0451ce intopython:mainDec 8, 2025
150 of 152 checks passed
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@diegorussodiegorussodiegorusso approved these changes

@brandtbucherbrandtbucherAwaiting requested review from brandtbucherbrandtbucher is a code owner

@savannahostrowskisavannahostrowskiAwaiting requested review from savannahostrowskisavannahostrowski is a code owner

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