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[zend_hash]: Use AVX2 instructions for better performance #10858

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Merged
merged 1 commit into from
Mar 17, 2023
Merged

[zend_hash]: Use AVX2 instructions for better performance #10858

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14 changes: 12 additions & 2 deletions Zend/zend_hash.c
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,10 @@
# include <arm_neon.h>
#endif

#ifdef __SSE2__
/* Prefer to use AVX2 instructions for better latency and throughput */
#if defined(__AVX2__)
# include <immintrin.h>
#elif defined( __SSE2__)
# include <mmintrin.h>
# include <emmintrin.h>
#endif
Expand Down Expand Up @@ -176,7 +179,14 @@ static zend_always_inline void zend_hash_real_init_mixed_ex(HashTable *ht)
HT_SET_DATA_ADDR(ht, data);
/* Don't overwrite iterator count. */
ht->u.v.flags = HASH_FLAG_STATIC_KEYS;
#ifdef __SSE2__
#if defined(__AVX2__)
do {
__m256i ymm0 = _mm256_setzero_si256();
ymm0 = _mm256_cmpeq_epi64(ymm0, ymm0);
_mm256_storeu_si256((__m256i*)&HT_HASH_EX(data, 0), ymm0);
_mm256_storeu_si256((__m256i*)&HT_HASH_EX(data, 8), ymm0);
} while(0);
#elif defined (__SSE2__)
do {
__m128i xmm0 = _mm_setzero_si128();
xmm0 = _mm_cmpeq_epi8(xmm0, xmm0);
Expand Down