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opcache: Patch SSE based fast_memcpy() implementation #1446

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Merged
merged 1 commit into from
Aug 3, 2015
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opcache: Patch SSE based fast_memcpy() implementation #1446

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9 changes: 5 additions & 4 deletions ext/opcache/zend_accelerator_util_funcs.c
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Original file line number Diff line number Diff line change
Expand Up @@ -658,16 +658,17 @@ static zend_always_inline void fast_memcpy(void *dest, const void *src, size_t s

do {
_mm_prefetch(dqsrc + 4, _MM_HINT_NTA);
_mm_prefetch(dqdest + 4, _MM_HINT_T0);

__m128i xmm0 = _mm_load_si128(dqsrc + 0);
__m128i xmm1 = _mm_load_si128(dqsrc + 1);
__m128i xmm2 = _mm_load_si128(dqsrc + 2);
__m128i xmm3 = _mm_load_si128(dqsrc + 3);
dqsrc += 4;
_mm_stream_si128(dqdest + 0, xmm0);
_mm_stream_si128(dqdest + 1, xmm1);
_mm_stream_si128(dqdest + 2, xmm2);
_mm_stream_si128(dqdest + 3, xmm3);
_mm_store_si128(dqdest + 0, xmm0);
_mm_store_si128(dqdest + 1, xmm1);
_mm_store_si128(dqdest + 2, xmm2);
_mm_store_si128(dqdest + 3, xmm3);
dqdest += 4;
} while (dqsrc != end);
}
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