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bpo-40280: Optimize ints and and startup on wasm (GH-29887)

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Christian Heimes 2021-12-02 13:19:30 +02:00 • committed by GitHub
parent a6c3b0faa1
commit cb8f491f46
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2 changed files with 13 additions and 5 deletions
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12
Include/pyport.h
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@ -87,13 +87,17 @@ Used in: Py_SAFE_DOWNCAST
/* If PYLONG_BITS_IN_DIGIT is not defined then we'll use 30-bit digits if all
the necessary integer types are available, and we're on a 64-bit platform
(as determined by SIZEOF_VOID_P); otherwise we use 15-bit digits. */
(as determined by SIZEOF_VOID_P); otherwise we use 15-bit digits.
From pyodide: WASM has 32 bit pointers but has native 64 bit arithmetic
so it is more efficient to use 30 bit digits.
*/
#ifndef PYLONG_BITS_IN_DIGIT
#if SIZEOF_VOID_P >= 8
#define PYLONG_BITS_IN_DIGIT 30
#if SIZEOF_VOID_P >= 8 || defined(__wasm__)
# define PYLONG_BITS_IN_DIGIT 30
#else
#define PYLONG_BITS_IN_DIGIT 15
# define PYLONG_BITS_IN_DIGIT 15
#endif
#endif