2 * Copyright (c) 2018 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #ifndef included_vector_avx2_h
17 #define included_vector_avx2_h
19 #include <vppinfra/clib.h>
20 #include <x86intrin.h>
23 #define foreach_avx2_vec256i \
24 _(i,8,32,epi8) _(i,16,16,epi16) _(i,32,8,epi32) _(i,64,4,epi64)
25 #define foreach_avx2_vec256u \
26 _(u,8,32,epi8) _(u,16,16,epi16) _(u,32,8,epi32) _(u,64,4,epi64)
27 #define foreach_avx2_vec256f \
28 _(f,32,8,ps) _(f,64,4,pd)
30 #define _mm256_set1_epi64 _mm256_set1_epi64x
32 /* splat, load_unaligned, store_unaligned, is_all_zero, is_equal,
34 #define _(t, s, c, i) \
35 static_always_inline t##s##x##c \
36 t##s##x##c##_splat (t##s x) \
37 { return (t##s##x##c) _mm256_set1_##i (x); } \
39 static_always_inline t##s##x##c \
40 t##s##x##c##_load_unaligned (void *p) \
41 { return (t##s##x##c) _mm256_loadu_si256 (p); } \
43 static_always_inline void \
44 t##s##x##c##_store_unaligned (t##s##x##c v, void *p) \
45 { _mm256_storeu_si256 ((__m256i *) p, (__m256i) v); } \
47 static_always_inline int \
48 t##s##x##c##_is_all_zero (t##s##x##c x) \
49 { return _mm256_testz_si256 ((__m256i) x, (__m256i) x); } \
51 static_always_inline int \
52 t##s##x##c##_is_equal (t##s##x##c a, t##s##x##c b) \
53 { return t##s##x##c##_is_all_zero (a ^ b); } \
55 static_always_inline int \
56 t##s##x##c##_is_all_equal (t##s##x##c v, t##s x) \
57 { return t##s##x##c##_is_equal (v, t##s##x##c##_splat (x)); } \
59 static_always_inline t##s##x##c \
60 t##s##x##c##_interleave_lo (t##s##x##c a, t##s##x##c b) \
61 { return (t##s##x##c) _mm256_unpacklo_##i ((__m256i) a, (__m256i) b); } \
63 static_always_inline t##s##x##c \
64 t##s##x##c##_interleave_hi (t##s##x##c a, t##s##x##c b) \
65 { return (t##s##x##c) _mm256_unpackhi_##i ((__m256i) a, (__m256i) b); } \
68 foreach_avx2_vec256i foreach_avx2_vec256u
73 u32x8_permute (u32x8 v, u32x8 idx)
75 return (u32x8) _mm256_permutevar8x32_epi32 ((__m256i) v, (__m256i) idx);
78 /* _extract_lo, _extract_hi */
82 t2##_extract_lo (t2 v) \
83 { return (t1) _mm256_extracti128_si256 ((__m256i) v, 0); } \
86 t2##_extract_hi (t2 v) \
87 { return (t1) _mm256_extracti128_si256 ((__m256i) v, 1); } \
90 t2##_insert_lo (t2 v1, t1 v2) \
91 { return (t2) _mm256_inserti128_si256 ((__m256i) v1, (__m128i) v2, 0); }\
94 t2##_insert_hi (t2 v1, t1 v2) \
95 { return (t2) _mm256_inserti128_si256 ((__m256i) v1, (__m128i) v2, 1); }\
107 static_always_inline u32
108 u8x32_msb_mask (u8x32 v)
110 return _mm256_movemask_epi8 ((__m256i) v);
116 static_always_inline t \
117 f##_extend_to_##t (f x) \
118 { return (t) _mm256_cvt##i ((__m128i) x); }
120 _(u16x8, u32x8, epu16_epi32)
121 _(u16x8, u64x4, epu16_epi64)
122 _(u32x4, u64x4, epu32_epi64)
123 _(u8x16, u16x16, epu8_epi64)
124 _(u8x16, u32x8, epu8_epi32)
125 _(u8x16, u64x4, epu8_epi64)
126 _(i16x8, i32x8, epi16_epi32)
127 _(i16x8, i64x4, epi16_epi64)
128 _(i32x4, i64x4, epi32_epi64)
129 _(i8x16, i16x16, epi8_epi64)
130 _(i8x16, i32x8, epi8_epi32)
131 _(i8x16, i64x4, epi8_epi64)
135 static_always_inline u64x4
136 u64x4_byte_swap (u64x4 v)
139 7, 6, 5, 4, 3, 2, 1, 0, 15, 14, 13, 12, 11, 10, 9, 8,
140 7, 6, 5, 4, 3, 2, 1, 0, 15, 14, 13, 12, 11, 10, 9, 8,
142 return (u64x4) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) swap);
145 static_always_inline u32x8
146 u32x8_byte_swap (u32x8 v)
149 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12,
150 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12
152 return (u32x8) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) swap);
155 static_always_inline u16x16
156 u16x16_byte_swap (u16x16 v)
159 1, 0, 3, 2, 5, 4, 7, 6, 9, 8, 11, 10, 13, 12, 15, 14,
160 1, 0, 3, 2, 5, 4, 7, 6, 9, 8, 11, 10, 13, 12, 15, 14
162 return (u16x16) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) swap);
165 static_always_inline u32x8
166 u32x8_hadd (u32x8 v1, u32x8 v2)
168 return (u32x8) _mm256_hadd_epi32 ((__m256i) v1, (__m256i) v2);
171 static_always_inline u16x16
172 u16x16_mask_last (u16x16 v, u8 n_last)
174 const u16x16 masks[17] = {
180 {-1, -1, -1, -1, -1},
181 {-1, -1, -1, -1, -1, -1},
182 {-1, -1, -1, -1, -1, -1, -1},
183 {-1, -1, -1, -1, -1, -1, -1, -1},
184 {-1, -1, -1, -1, -1, -1, -1, -1, -1},
185 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
186 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
187 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
188 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
189 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
190 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
191 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
194 ASSERT (n_last < 17);
196 return v & masks[16 - n_last];
199 static_always_inline f32x8
200 f32x8_from_u32x8 (u32x8 v)
202 return (f32x8) _mm256_cvtepi32_ps ((__m256i) v);
205 static_always_inline u32x8
206 u32x8_from_f32x8 (f32x8 v)
208 return (u32x8) _mm256_cvttps_epi32 ((__m256) v);
211 #define u32x8_blend(a,b,m) \
212 (u32x8) _mm256_blend_epi32 ((__m256i) a, (__m256i) b, m)
214 #define u16x16_blend(v1, v2, mask) \
215 (u16x16) _mm256_blend_epi16 ((__m256i) (v1), (__m256i) (v2), mask)
217 static_always_inline u64x4
218 u64x4_gather (void *p0, void *p1, void *p2, void *p3)
221 *(u64 *) p0, *(u64 *) p1, *(u64 *) p2, *(u64 *) p3
226 static_always_inline u32x8
227 u32x8_gather (void *p0, void *p1, void *p2, void *p3, void *p4, void *p5,
231 *(u32 *) p0, *(u32 *) p1, *(u32 *) p2, *(u32 *) p3,
232 *(u32 *) p4, *(u32 *) p5, *(u32 *) p6, *(u32 *) p7,
238 static_always_inline void
239 u64x4_scatter (u64x4 r, void *p0, void *p1, void *p2, void *p3)
247 static_always_inline void
248 u32x8_scatter (u32x8 r, void *p0, void *p1, void *p2, void *p3, void *p4,
249 void *p5, void *p6, void *p7)
261 static_always_inline void
262 u64x4_scatter_one (u64x4 r, int index, void *p)
264 *(u64 *) p = r[index];
267 static_always_inline void
268 u32x8_scatter_one (u32x8 r, int index, void *p)
270 *(u32 *) p = r[index];
273 static_always_inline u8x32
274 u8x32_is_greater (u8x32 v1, u8x32 v2)
276 return (u8x32) _mm256_cmpgt_epi8 ((__m256i) v1, (__m256i) v2);
279 static_always_inline u8x32
280 u8x32_blend (u8x32 v1, u8x32 v2, u8x32 mask)
282 return (u8x32) _mm256_blendv_epi8 ((__m256i) v1, (__m256i) v2,
286 #define u32x8_permute_lanes(a, b, m) \
287 (u32x8) _mm256_permute2x128_si256 ((__m256i) a, (__m256i) b, m)
288 #define u64x4_permute_lanes(a, b, m) \
289 (u64x4) _mm256_permute2x128_si256 ((__m256i) a, (__m256i) b, m)
291 static_always_inline u32x8
292 u32x8_min (u32x8 a, u32x8 b)
294 return (u32x8) _mm256_min_epu32 ((__m256i) a, (__m256i) b);
297 static_always_inline u32
298 u32x8_min_scalar (u32x8 v)
300 return u32x4_min_scalar (u32x4_min (u32x8_extract_lo (v),
301 u32x8_extract_hi (v)));
304 static_always_inline void
305 u32x8_transpose (u32x8 a[8])
309 r[0] = (u64x4) u32x8_interleave_lo (a[0], a[1]);
310 r[1] = (u64x4) u32x8_interleave_hi (a[0], a[1]);
311 r[2] = (u64x4) u32x8_interleave_lo (a[2], a[3]);
312 r[3] = (u64x4) u32x8_interleave_hi (a[2], a[3]);
313 r[4] = (u64x4) u32x8_interleave_lo (a[4], a[5]);
314 r[5] = (u64x4) u32x8_interleave_hi (a[4], a[5]);
315 r[6] = (u64x4) u32x8_interleave_lo (a[6], a[7]);
316 r[7] = (u64x4) u32x8_interleave_hi (a[6], a[7]);
318 x = u64x4_interleave_lo (r[0], r[2]);
319 y = u64x4_interleave_lo (r[4], r[6]);
320 a[0] = u32x8_permute_lanes (x, y, 0x20);
321 a[4] = u32x8_permute_lanes (x, y, 0x31);
323 x = u64x4_interleave_hi (r[0], r[2]);
324 y = u64x4_interleave_hi (r[4], r[6]);
325 a[1] = u32x8_permute_lanes (x, y, 0x20);
326 a[5] = u32x8_permute_lanes (x, y, 0x31);
328 x = u64x4_interleave_lo (r[1], r[3]);
329 y = u64x4_interleave_lo (r[5], r[7]);
330 a[2] = u32x8_permute_lanes (x, y, 0x20);
331 a[6] = u32x8_permute_lanes (x, y, 0x31);
333 x = u64x4_interleave_hi (r[1], r[3]);
334 y = u64x4_interleave_hi (r[5], r[7]);
335 a[3] = u32x8_permute_lanes (x, y, 0x20);
336 a[7] = u32x8_permute_lanes (x, y, 0x31);
339 static_always_inline void
340 u64x4_transpose (u64x4 a[8])
344 r[0] = u64x4_interleave_lo (a[0], a[1]);
345 r[1] = u64x4_interleave_hi (a[0], a[1]);
346 r[2] = u64x4_interleave_lo (a[2], a[3]);
347 r[3] = u64x4_interleave_hi (a[2], a[3]);
349 a[0] = u64x4_permute_lanes (r[0], r[2], 0x20);
350 a[1] = u64x4_permute_lanes (r[1], r[3], 0x20);
351 a[2] = u64x4_permute_lanes (r[0], r[2], 0x31);
352 a[3] = u64x4_permute_lanes (r[1], r[3], 0x31);
355 #endif /* included_vector_avx2_h */
358 * fd.io coding-style-patch-verification: ON
361 * eval: (c-set-style "gnu")