cuberite/libdeflate
1
0
Fork 0
mirror of https://github.com/cuberite/libdeflate.git synced 2025-09-08 03:39:25 -04:00
Code Issues Packages Projects Releases Wiki Activity

lib/x86/matchfinder: add AVX-512BW optimized functions

Browse Source
This commit is contained in:
Eric Biggers 2018-12-24 12:03:03 -06:00
parent 166084acaa
commit 878bc01e87
1 changed files with 62 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
lib/x86/matchfinder_impl.h
View File

@ -25,6 +25,60 @@
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifdef __AVX512BW__
# if MATCHFINDER_ALIGNMENT < 64
# undef MATCHFINDER_ALIGNMENT
# define MATCHFINDER_ALIGNMENT 64
# endif
# include <immintrin.h>
static forceinline bool
matchfinder_init_avx512bw(mf_pos_t *data, size_t size)
{
__m512i v, *p;
size_t n;
if (size % (sizeof(__m512i) * 4) != 0)
return false;
STATIC_ASSERT(sizeof(mf_pos_t) == 2);
v = _mm512_set1_epi16(MATCHFINDER_INITVAL);
p = (__m512i *)data;
n = size / (sizeof(__m512i) * 4);
do {
p[0] = v;
p[1] = v;
p[2] = v;
p[3] = v;
p += 4;
} while (--n);
return true;
}
static forceinline bool
matchfinder_rebase_avx512bw(mf_pos_t *data, size_t size)
{
__m512i v, *p;
size_t n;
if (size % (sizeof(__m512i) * 4) != 0)
return false;
STATIC_ASSERT(sizeof(mf_pos_t) == 2);
v = _mm512_set1_epi16((u16)-MATCHFINDER_WINDOW_SIZE);
p = (__m512i *)data;
n = size / (sizeof(__m512i) * 4);
do {
/* PADDSW: Add Packed Signed Integers With Signed Saturation */
p[0] = _mm512_adds_epi16(p[0], v);
p[1] = _mm512_adds_epi16(p[1], v);
p[2] = _mm512_adds_epi16(p[2], v);
p[3] = _mm512_adds_epi16(p[3], v);
p += 4;
} while (--n);
return true;
}
#endif /* __AVX512BW__*/
#ifdef __AVX2__
# if MATCHFINDER_ALIGNMENT < 32
# undef MATCHFINDER_ALIGNMENT
@ -137,6 +191,10 @@ matchfinder_rebase_sse2(mf_pos_t *data, size_t size)
static forceinline bool
arch_matchfinder_init(mf_pos_t *data, size_t size)
{
#ifdef __AVX512BW__
if (matchfinder_init_avx512bw(data, size))
return true;
#endif
#ifdef __AVX2__
if (matchfinder_init_avx2(data, size))
return true;
@ -152,6 +210,10 @@ arch_matchfinder_init(mf_pos_t *data, size_t size)
static forceinline bool
arch_matchfinder_rebase(mf_pos_t *data, size_t size)
{
#ifdef __AVX512BW__
if (matchfinder_rebase_avx512bw(data, size))
return true;
#endif
#ifdef __AVX2__
if (matchfinder_rebase_avx2(data, size))
return true;