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Merge branch 'add_rvv_optmized_memcopy64' of https://github.com/anthony-zy/snappy into add_rvv_optmized_memcopy64

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anthony-zy
2025-10-17 10:29:45 +08:00
parent 9fd2b72c77 77a61a4927
commit 6ab5882822
1 changed files with 4 additions and 3 deletions
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snappy.cc
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@@ -1271,9 +1271,9 @@ void MemCopy64(char* dst, const void* src, size_t size) {
size_t vl = VSETVL_E8M2(remaining_bytes); size_t vl = VSETVL_E8M2(remaining_bytes);
// Load data from the current source pointer. // Load data from the current source pointer.
vuint8m2_t vec = VLE8_V_U8M2(src_ptr, vl); vuint8m2_t vec = VLE8_V_U8M2(src_ptr, vl);
// Store data to the current destination pointer. // Store data to the current destination pointer.
VSE8_V_U8M2(dst_ptr, vec, vl); VSE8_V_U8M2(dst_ptr, vec, vl);
// Update pointers and the remaining count. // Update pointers and the remaining count.
src_ptr += vl; src_ptr += vl;
dst_ptr += vl; dst_ptr += vl;
remaining_bytes -= vl; remaining_bytes -= vl;
@@ -1281,11 +1281,12 @@ void MemCopy64(char* dst, const void* src, size_t size) {
#else #else
std::memmove(dst, src, kShortMemCopy); std::memmove(dst, src, kShortMemCopy);
//Profiling shows that nearly all copies are short. // Profiling shows that nearly all copies are short.
if (SNAPPY_PREDICT_FALSE(size > kShortMemCopy)) { if (SNAPPY_PREDICT_FALSE(size > kShortMemCopy)) {
std::memmove(dst + kShortMemCopy, std::memmove(dst + kShortMemCopy,
static_cast<const uint8_t*>(src) + kShortMemCopy, static_cast<const uint8_t*>(src) + kShortMemCopy,
64 - kShortMemCopy); 64 - kShortMemCopy);
}
#endif #endif
} }