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provide non-immediate versions of lshiftbyte/rshiftbyte on x86

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This commit is contained in:
Konstantinos Margaritis 2022-09-07 15:07:20 +03:00
parent 1ae0d15181
commit 756ef409b4
1 changed files with 62 additions and 3 deletions
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65
src/util/arch/x86/simd_utils.h
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@ -165,8 +165,67 @@ m128 load_m128_from_u64a(const u64a *p) {
return _mm_set_epi64x(0LL, *p);
}
#define rshiftbyte_m128(a, count_immed) _mm_srli_si128(a, count_immed)
#define lshiftbyte_m128(a, count_immed) _mm_slli_si128(a, count_immed)
#define CASE_RSHIFT_VECTOR(a, count) case count: return _mm_srli_si128((m128)(a), (count)); break;
static really_inline
m128 rshiftbyte_m128(const m128 a, int count_immed) {
#if defined(HAVE__BUILTIN_CONSTANT_P)
if (__builtin_constant_p(count_immed)) {
return _mm_srli_si128(a, count_immed);
}
#endif
switch (count_immed) {
case 0: return a; break;
CASE_RSHIFT_VECTOR(a, 1);
CASE_RSHIFT_VECTOR(a, 2);
CASE_RSHIFT_VECTOR(a, 3);
CASE_RSHIFT_VECTOR(a, 4);
CASE_RSHIFT_VECTOR(a, 5);
CASE_RSHIFT_VECTOR(a, 6);
CASE_RSHIFT_VECTOR(a, 7);
CASE_RSHIFT_VECTOR(a, 8);
CASE_RSHIFT_VECTOR(a, 9);
CASE_RSHIFT_VECTOR(a, 10);
CASE_RSHIFT_VECTOR(a, 11);
CASE_RSHIFT_VECTOR(a, 12);
CASE_RSHIFT_VECTOR(a, 13);
CASE_RSHIFT_VECTOR(a, 14);
CASE_RSHIFT_VECTOR(a, 15);
default: return zeroes128(); break;
}
}
#undef CASE_RSHIFT_VECTOR
#define CASE_LSHIFT_VECTOR(a, count) case count: return _mm_srli_si128((m128)(a), (count)); break;
static really_inline
m128 lshiftbyte_m128(const m128 a, int count_immed) {
#if defined(HAVE__BUILTIN_CONSTANT_P)
if (__builtin_constant_p(count_immed)) {
return _mm_slli_si128(a, count_immed);
}
#endif
switch (count_immed) {
case 0: return a; break;
CASE_LSHIFT_VECTOR(a, 1);
CASE_LSHIFT_VECTOR(a, 2);
CASE_LSHIFT_VECTOR(a, 3);
CASE_LSHIFT_VECTOR(a, 4);
CASE_LSHIFT_VECTOR(a, 5);
CASE_LSHIFT_VECTOR(a, 6);
CASE_LSHIFT_VECTOR(a, 7);
CASE_LSHIFT_VECTOR(a, 8);
CASE_LSHIFT_VECTOR(a, 9);
CASE_LSHIFT_VECTOR(a, 10);
CASE_LSHIFT_VECTOR(a, 11);
CASE_LSHIFT_VECTOR(a, 12);
CASE_LSHIFT_VECTOR(a, 13);
CASE_LSHIFT_VECTOR(a, 14);
CASE_LSHIFT_VECTOR(a, 15);
default: return zeroes128(); break;
}
}
#undef CASE_LSHIFT_VECTOR
#if defined(HAVE_SSE41)
#define extract32from128(a, imm) _mm_extract_epi32(a, imm)
@ -322,6 +381,7 @@ m128 palignr_sw(m128 r, m128 l, int offset) {
break;
}
}
#undef CASE_ALIGN_VECTORS
static really_really_inline
m128 palignr(m128 r, m128 l, int offset) {
@ -332,7 +392,6 @@ m128 palignr(m128 r, m128 l, int offset) {
#endif
return palignr_sw(r, l, offset);
}
#undef CASE_ALIGN_VECTORS
static really_inline
m128 variable_byte_shift_m128(m128 in, s32 amount) {