Python 3.14 with JIT #247
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Python 3.14 with JIT #247
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Pull Request Overview
Adds support for building Python 3.14 with JIT (Just-In-Time compilation) by enabling the --enable-experimental-jit flag when a version is specified with a 'j' suffix (e.g., 3.14.0j).
- Modified build script to detect 'j' suffix and enable JIT compilation
- Added Docker build stage for Python 3.14 JIT with LLVM 19 dependencies
- Added integration test to verify JIT functionality
Reviewed Changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| scripts/build_python.sh | Added logic to detect 'j' suffix and configure JIT build options |
| Dockerfile | Added new build stage for Python 3.14j with LLVM dependencies |
| tests/test_integration.py | Added test to verify JIT availability and enablement |
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This was still producing unpredictable behaviour in CI (sometimes being killed and exiting with 137/OOM kill). Disabling the memory limit ensures that the only reason this test case will kill the executing code is because of PID exhaustion.
MarkKoz
approved these changes
Oct 14, 2025
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Adds new build support for adding the
--enable-experimental-jitflag when a version is passed with ajsuffix (e.g.3.14.0j).