FD.io VPP  v18.10-34-gcce845e
Vector Packet Processing
vector_avx2.h
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1 /*
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:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
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.
14  */
15 
16 #ifndef included_vector_avx2_h
17 #define included_vector_avx2_h
18 
19 #include <vppinfra/clib.h>
20 #include <x86intrin.h>
21 
22 /* *INDENT-OFF* */
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)
29 
30 #define _mm256_set1_epi64 _mm256_set1_epi64x
31 
32 /* splat, load_unaligned, store_unaligned, is_all_zero, is_equal,
33  is_all_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); } \
38 \
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); } \
42 \
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); } \
46 \
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); } \
50 \
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); } \
54 \
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)); } \
58 \
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); } \
62 \
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); } \
66 
67 
69 #undef _
70 /* *INDENT-ON* */
71 
72 always_inline u32x8
73 u32x8_permute (u32x8 v, u32x8 idx)
74 {
75  return (u32x8) _mm256_permutevar8x32_epi32 ((__m256i) v, (__m256i) idx);
76 }
77 
78 /* _extract_lo, _extract_hi */
79 /* *INDENT-OFF* */
80 #define _(t1,t2) \
81 always_inline t1 \
82 t2##_extract_lo (t2 v) \
83 { return (t1) _mm256_extracti128_si256 ((__m256i) v, 0); } \
84 \
85 always_inline t1 \
86 t2##_extract_hi (t2 v) \
87 { return (t1) _mm256_extracti128_si256 ((__m256i) v, 1); } \
88 \
89 always_inline t2 \
90 t2##_insert_lo (t2 v1, t1 v2) \
91 { return (t2) _mm256_inserti128_si256 ((__m256i) v1, (__m128i) v2, 0); }\
92 \
93 always_inline t2 \
94 t2##_insert_hi (t2 v1, t1 v2) \
95 { return (t2) _mm256_inserti128_si256 ((__m256i) v1, (__m128i) v2, 1); }\
96 
97 _(u8x16, u8x32)
98 _(u16x8, u16x16)
99 _(u32x4, u32x8)
100 _(u64x2, u64x4)
101 #undef _
102 /* *INDENT-ON* */
103 
104 
105 
106 
109 {
110  return _mm256_movemask_epi8 ((__m256i) v);
111 }
112 
113 /* _extend_to_ */
114 /* *INDENT-OFF* */
115 #define _(f,t,i) \
116 static_always_inline t \
117 f##_extend_to_##t (f x) \
118 { return (t) _mm256_cvt##i ((__m128i) x); }
119 
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)
132 #undef _
133 /* *INDENT-ON* */
134 
137 {
138  u8x32 swap = {
139  1, 0, 3, 2, 5, 4, 7, 6, 9, 8, 11, 10, 13, 12, 15, 14,
140  1, 0, 3, 2, 5, 4, 7, 6, 9, 8, 11, 10, 13, 12, 15, 14
141  };
142  return (u16x16) _mm256_shuffle_epi8 ((__m256i) v, (__m256i) swap);
143 }
144 
146 u32x8_hadd (u32x8 v1, u32x8 v2)
147 {
148  return (u32x8) _mm256_hadd_epi32 ((__m256i) v1, (__m256i) v2);
149 }
150 
153 {
154  const u16x16 masks[17] = {
155  {0},
156  {-1},
157  {-1, -1},
158  {-1, -1, -1},
159  {-1, -1, -1, -1},
160  {-1, -1, -1, -1, -1},
161  {-1, -1, -1, -1, -1, -1},
162  {-1, -1, -1, -1, -1, -1, -1},
163  {-1, -1, -1, -1, -1, -1, -1, -1},
164  {-1, -1, -1, -1, -1, -1, -1, -1, -1},
165  {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
166  {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
167  {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
168  {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
169  {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
170  {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
171  {-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1},
172  };
173 
174  ASSERT (n_last < 17);
175 
176  return v & masks[16 - n_last];
177 }
178 
179 #endif /* included_vector_avx2_h */
180 
181 /*
182  * fd.io coding-style-patch-verification: ON
183  *
184  * Local Variables:
185  * eval: (c-set-style "gnu")
186  * End:
187  */
u16x16 u64x4 static_always_inline u32 u8x32_msb_mask(u8x32 v)
Definition: vector_avx2.h:108
foreach_avx2_vec256i static foreach_avx2_vec256u u32x8 u32x8_permute(u32x8 v, u32x8 idx)
Definition: vector_avx2.h:73
static_always_inline u16x16 u16x16_mask_last(u16x16 v, u8 n_last)
Definition: vector_avx2.h:152
unsigned char u8
Definition: types.h:56
epu16_epi64 epu8_epi64 epu8_epi64 epi16_epi64 i16x16
Definition: vector_avx2.h:129
#define static_always_inline
Definition: clib.h:95
epu16_epi64 epu8_epi64 epu8_epi64 epi16_epi64 epi8_epi64 epi8_epi64 static_always_inline u16x16 u16x16_byte_swap(u16x16 v)
Definition: vector_avx2.h:136
#define always_inline
Definition: clib.h:94
unsigned int u32
Definition: types.h:88
#define foreach_avx2_vec256i
Definition: vector_avx2.h:23
i32x4
epu8_epi32 epu16_epi32 u64x2
Definition: vector_sse42.h:640
#define v
Definition: acl.c:496
#define ASSERT(truth)
static_always_inline u32x8 u32x8_hadd(u32x8 v1, u32x8 v2)
Definition: vector_avx2.h:146
vmrglw i16x8
#define foreach_avx2_vec256u
Definition: vector_avx2.h:25
epu16_epi64 epu8_epi64 epu8_epi64 i64x4
Definition: vector_avx2.h:127
u64x4
Definition: vector_avx2.h:121
unsigned long long u32x4
Definition: ixge.c:28
epu16_epi64 u16x16
Definition: vector_avx2.h:123