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Clarify baseline for new interpreter #129972

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Merged
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Feb 10, 2025
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Clarify baseline for new interpreter #129972

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Clarify baseline
Fidget-Spinner Feb 10, 2025
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Update 3.14.rst
Fidget-Spinner Feb 10, 2025
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3 changes: 2 additions & 1 deletion Doc/whatsnew/3.14.rst
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Expand Up @@ -218,7 +218,8 @@ A new type of interpreter based on tail calls has been added to CPython.
For certain newer compilers, this interpreter provides
significantly better performance. Preliminary numbers on our machines suggest
anywhere from -3% to 30% faster Python code, and a geometric mean of 9-15%
faster on ``pyperformance`` depending on platform and architecture.
faster on ``pyperformance`` depending on platform and architecture. The
baseline is Python 3.14 built with Clang 19 without this new interpreter.

This interpreter currently only works with Clang 19 and newer
on x86-64 and AArch64 architectures. However, we expect
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