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Attempt to fix build with gcc-4.8

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This commit is contained in:
Xinchen Hui 2018-03-01 18:34:39 +08:00
parent 966923f4be
commit 12ee810960
1 changed files with 6 additions and 1 deletions
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7
Zend/zend_portability.h
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@ -538,7 +538,12 @@ static zend_always_inline double _zend_get_nan(void) /* {{{ */
# define PHP_HAVE_SSE4_2
# endif
# if PHP_HAVE_AVX2_INSTRUCTIONS && defined(HAVE_IMMINTRIN_H)
/*
* AVX2 support was added in gcc 4.7, but AVX2 intrinsics don't work in
* __attribute__((target("avx2"))) functions until gcc 4.9.
*/
# if PHP_HAVE_AVX2_INSTRUCTIONS && defined(HAVE_IMMINTRIN_H) && \
(defined(__llvm__) || defined(__clang__) || (defined(__GNUC__) && ZEND_GCC_VERSION >= 4009))
# define PHP_HAVE_AVX2
# endif
#endif