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 #define u64x4_permute(v, m0, m1, m2, m3) \
79 (u64x4) _mm256_permute4x64_epi64 ( \
80 (__m256i) v, ((m0) | (m1) << 2 | (m2) << 4 | (m3) << 6))
82 /* _extract_lo, _extract_hi */
86 t2##_extract_lo (t2 v) \
87 { return (t1) _mm256_extracti128_si256 ((__m256i) v, 0); } \
90 t2##_extract_hi (t2 v) \
91 { return (t1) _mm256_extracti128_si256 ((__m256i) v, 1); } \
94 t2##_insert_lo (t2 v1, t1 v2) \
95 { return (t2) _mm256_inserti128_si256 ((__m256i) v1, (__m128i) v2, 0); }\
98 t2##_insert_hi (t2 v1, t1 v2) \
99 { return (t2) _mm256_inserti128_si256 ((__m256i) v1, (__m128i) v2, 1); }\
109 #define _(f, t, fn) \
110 always_inline t t##_pack (f lo, f hi) \
112 return (t) fn ((__m256i) lo, (__m256i) hi); \
115 _ (i16x16, i8x32, _mm256_packs_epi16)
116 _ (i16x16, u8x32, _mm256_packus_epi16)
117 _ (i32x8, i16x16, _mm256_packs_epi32)
118 _ (i32x8, u16x16, _mm256_packus_epi32)
122 static_always_inline u32
123 u8x32_msb_mask (u8x32 v)
125 return _mm256_movemask_epi8 ((__m256i) v);
128 static_always_inline u32
129 i8x32_msb_mask (i8x32 v)
131 return _mm256_movemask_epi8 ((__m256i) v);
137 static_always_inline t \
139 { return (t) _mm256_cvt##i ((__m128i) x); }
141 _(u16x8, u32x8, epu16_epi32)
142 _(u16x8, u64x4, epu16_epi64)
143 _(u32x4, u64x4, epu32_epi64)
144 _ (u8x16, u16x16, epu8_epi16)
145 _(u8x16, u32x8, epu8_epi32)
146 _(u8x16, u64x4, epu8_epi64)
147 _(i16x8, i32x8, epi16_epi32)
148 _(i16x8, i64x4, epi16_epi64)
149 _(i32x4, i64x4, epi32_epi64)
150 _ (i8x16, i16x16, epi8_epi16)
151 _(i8x16, i32x8, epi8_epi32)
152 _(i8x16, i64x4, epi8_epi64)
156 static_always_inline u64x4
157 u64x4_byte_swap (u64x4 v)
160 7, 6, 5, 4, 3, 2, 1, 0, 15, 14, 13, 12, 11, 10, 9, 8,
161 7, 6, 5, 4, 3, 2, 1, 0, 15, 14, 13, 12, 11, 10, 9, 8,
163 return (u64x4) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) swap);
166 static_always_inline u32x8
167 u32x8_byte_swap (u32x8 v)
170 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12,
171 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12
173 return (u32x8) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) swap);
176 static_always_inline u16x16
177 u16x16_byte_swap (u16x16 v)
180 1, 0, 3, 2, 5, 4, 7, 6, 9, 8, 11, 10, 13, 12, 15, 14,
181 1, 0, 3, 2, 5, 4, 7, 6, 9, 8, 11, 10, 13, 12, 15, 14
183 return (u16x16) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) swap);
186 static_always_inline u8x32
187 u8x32_shuffle (u8x32 v, u8x32 m)
189 return (u8x32) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) m);
192 #define u8x32_align_right(a, b, imm) \
193 (u8x32) _mm256_alignr_epi8 ((__m256i) a, (__m256i) b, imm)
195 static_always_inline u32
196 u32x8_sum_elts (u32x8 sum8)
198 sum8 += (u32x8) u8x32_align_right (sum8, sum8, 8);
199 sum8 += (u32x8) u8x32_align_right (sum8, sum8, 4);
200 return sum8[0] + sum8[4];
203 static_always_inline u32x8
204 u32x8_hadd (u32x8 v1, u32x8 v2)
206 return (u32x8) _mm256_hadd_epi32 ((__m256i) v1, (__m256i) v2);
209 static_always_inline u16x16
210 u16x16_mask_last (u16x16 v, u8 n_last)
212 const u16x16 masks[17] = {
218 {-1, -1, -1, -1, -1},
219 {-1, -1, -1, -1, -1, -1},
220 {-1, -1, -1, -1, -1, -1, -1},
221 {-1, -1, -1, -1, -1, -1, -1, -1},
222 {-1, -1, -1, -1, -1, -1, -1, -1, -1},
223 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
224 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
225 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
226 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
227 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
228 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
229 {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
232 ASSERT (n_last < 17);
234 return v & masks[16 - n_last];
237 static_always_inline f32x8
238 f32x8_from_u32x8 (u32x8 v)
240 return (f32x8) _mm256_cvtepi32_ps ((__m256i) v);
243 static_always_inline u32x8
244 u32x8_from_f32x8 (f32x8 v)
246 return (u32x8) _mm256_cvttps_epi32 ((__m256) v);
249 #define u32x8_blend(a,b,m) \
250 (u32x8) _mm256_blend_epi32 ((__m256i) a, (__m256i) b, m)
252 #define u16x16_blend(v1, v2, mask) \
253 (u16x16) _mm256_blend_epi16 ((__m256i) (v1), (__m256i) (v2), mask)
255 static_always_inline u64x4
256 u64x4_gather (void *p0, void *p1, void *p2, void *p3)
259 *(u64 *) p0, *(u64 *) p1, *(u64 *) p2, *(u64 *) p3
264 static_always_inline u32x8
265 u32x8_gather (void *p0, void *p1, void *p2, void *p3, void *p4, void *p5,
269 *(u32 *) p0, *(u32 *) p1, *(u32 *) p2, *(u32 *) p3,
270 *(u32 *) p4, *(u32 *) p5, *(u32 *) p6, *(u32 *) p7,
276 static_always_inline void
277 u64x4_scatter (u64x4 r, void *p0, void *p1, void *p2, void *p3)
285 static_always_inline void
286 u32x8_scatter (u32x8 r, void *p0, void *p1, void *p2, void *p3, void *p4,
287 void *p5, void *p6, void *p7)
299 static_always_inline void
300 u64x4_scatter_one (u64x4 r, int index, void *p)
302 *(u64 *) p = r[index];
305 static_always_inline void
306 u32x8_scatter_one (u32x8 r, int index, void *p)
308 *(u32 *) p = r[index];
311 static_always_inline u8x32
312 u8x32_is_greater (u8x32 v1, u8x32 v2)
314 return (u8x32) _mm256_cmpgt_epi8 ((__m256i) v1, (__m256i) v2);
317 static_always_inline u8x32
318 u8x32_blend (u8x32 v1, u8x32 v2, u8x32 mask)
320 return (u8x32) _mm256_blendv_epi8 ((__m256i) v1, (__m256i) v2,
324 #define u32x8_permute_lanes(a, b, m) \
325 (u32x8) _mm256_permute2x128_si256 ((__m256i) a, (__m256i) b, m)
326 #define u64x4_permute_lanes(a, b, m) \
327 (u64x4) _mm256_permute2x128_si256 ((__m256i) a, (__m256i) b, m)
329 static_always_inline u32x8
330 u32x8_min (u32x8 a, u32x8 b)
332 return (u32x8) _mm256_min_epu32 ((__m256i) a, (__m256i) b);
335 static_always_inline u32
336 u32x8_min_scalar (u32x8 v)
338 return u32x4_min_scalar (u32x4_min (u32x8_extract_lo (v),
339 u32x8_extract_hi (v)));
342 static_always_inline void
343 u32x8_transpose (u32x8 a[8])
347 r[0] = (u64x4) u32x8_interleave_lo (a[0], a[1]);
348 r[1] = (u64x4) u32x8_interleave_hi (a[0], a[1]);
349 r[2] = (u64x4) u32x8_interleave_lo (a[2], a[3]);
350 r[3] = (u64x4) u32x8_interleave_hi (a[2], a[3]);
351 r[4] = (u64x4) u32x8_interleave_lo (a[4], a[5]);
352 r[5] = (u64x4) u32x8_interleave_hi (a[4], a[5]);
353 r[6] = (u64x4) u32x8_interleave_lo (a[6], a[7]);
354 r[7] = (u64x4) u32x8_interleave_hi (a[6], a[7]);
356 x = u64x4_interleave_lo (r[0], r[2]);
357 y = u64x4_interleave_lo (r[4], r[6]);
358 a[0] = u32x8_permute_lanes (x, y, 0x20);
359 a[4] = u32x8_permute_lanes (x, y, 0x31);
361 x = u64x4_interleave_hi (r[0], r[2]);
362 y = u64x4_interleave_hi (r[4], r[6]);
363 a[1] = u32x8_permute_lanes (x, y, 0x20);
364 a[5] = u32x8_permute_lanes (x, y, 0x31);
366 x = u64x4_interleave_lo (r[1], r[3]);
367 y = u64x4_interleave_lo (r[5], r[7]);
368 a[2] = u32x8_permute_lanes (x, y, 0x20);
369 a[6] = u32x8_permute_lanes (x, y, 0x31);
371 x = u64x4_interleave_hi (r[1], r[3]);
372 y = u64x4_interleave_hi (r[5], r[7]);
373 a[3] = u32x8_permute_lanes (x, y, 0x20);
374 a[7] = u32x8_permute_lanes (x, y, 0x31);
377 static_always_inline void
378 u64x4_transpose (u64x4 a[8])
382 r[0] = u64x4_interleave_lo (a[0], a[1]);
383 r[1] = u64x4_interleave_hi (a[0], a[1]);
384 r[2] = u64x4_interleave_lo (a[2], a[3]);
385 r[3] = u64x4_interleave_hi (a[2], a[3]);
387 a[0] = u64x4_permute_lanes (r[0], r[2], 0x20);
388 a[1] = u64x4_permute_lanes (r[1], r[3], 0x20);
389 a[2] = u64x4_permute_lanes (r[0], r[2], 0x31);
390 a[3] = u64x4_permute_lanes (r[1], r[3], 0x31);
393 #endif /* included_vector_avx2_h */
396 * fd.io coding-style-patch-verification: ON
399 * eval: (c-set-style "gnu")