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Merge pull request #4252 from facebook/x32_dynamicBmi2

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enable DYNAMIC_BMI2 by default on x86 (32-bit mode)
This commit is contained in:
Yann Collet
2025-01-19 18:30:29 -08:00
committed by GitHub
parent 9fbed3330c 4bbf4a285d
commit 0c335c97b8
1 changed files with 6 additions and 6 deletions
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lib/common/portability_macros.h
+6 -6
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@@ -78,15 +78,15 @@
* Enabled for clang & gcc >=4.8 on x86 when BMI2 isn't enabled by default.
*/
#ifndef DYNAMIC_BMI2
#if ((defined(__clang__) && __has_attribute(__target__)) \
# if ((defined(__clang__) && __has_attribute(__target__)) \
|| (defined(__GNUC__) \
&& (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))) \
&& (defined(__x86_64__) || defined(_M_X64)) \
&& (defined(__i386__) || defined(__x86_64__) || defined(_M_IX86) || defined(_M_X64)) \
&& !defined(__BMI2__)
# define DYNAMIC_BMI2 1
#else
# define DYNAMIC_BMI2 0
#endif
# define DYNAMIC_BMI2 1
# else
# define DYNAMIC_BMI2 0
# endif
#endif
/**