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Enable the tail call interpreter on 3.14+ clang builds #524

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merged 2 commits into from
Feb 12, 2025
Merged

Enable the tail call interpreter on 3.14+ clang builds #524

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c597632
Enable the tail call interpreter on 3.14+
zanieb Feb 11, 2025
0201b73
Gate to clang builds
zanieb Feb 12, 2025
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7 changes: 7 additions & 0 deletions cpython-unix/build-cpython.sh
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Expand Up @@ -348,6 +348,13 @@ if [ "${PYBUILD_PLATFORM}" != "macos" ]; then
fi
fi

# On Python 3.14+, enable the tail calling interpreter which is more performant.
# This is only available on Clang 19+
# https://docs.python.org/3.14/using/configure.html#cmdoption-with-tail-call-interp
if [[ "${CC}" = "clang" && -n "${PYTHON_MEETS_MINIMUM_VERSION_3_14}" ]]; then
EXTRA_CONFIGURE_FLAGS="${EXTRA_CONFIGURE_FLAGS} --with-tail-call-interp"
fi

# On Python 3.12+ we need to link the special hacl library provided some SHA-256
# implementations. Since we hack up the regular extension building mechanism, we
# need to reinvent this wheel.
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