compare_win.cc 6.6 KB
Newer Older
James Zern's avatar
James Zern committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
/*
 *  Copyright 2012 The LibYuv Project Authors. All rights reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS. All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include "libyuv/basic_types.h"
#include "libyuv/row.h"

#ifdef __cplusplus
namespace libyuv {
extern "C" {
#endif

James Zern's avatar
James Zern committed
19
20
21
// This module is for Visual C x86.
#if !defined(LIBYUV_DISABLE_X86) && defined(_M_IX86) && \
    defined(_MSC_VER) && !defined(__clang__)
James Zern's avatar
James Zern committed
22

James Zern's avatar
James Zern committed
23
__declspec(naked)
James Zern's avatar
James Zern committed
24
25
26
27
28
29
30
31
32
uint32 SumSquareError_SSE2(const uint8* src_a, const uint8* src_b, int count) {
  __asm {
    mov        eax, [esp + 4]    // src_a
    mov        edx, [esp + 8]    // src_b
    mov        ecx, [esp + 12]   // count
    pxor       xmm0, xmm0
    pxor       xmm5, xmm5

  wloop:
Johann's avatar
Johann committed
33
    movdqu     xmm1, [eax]
James Zern's avatar
James Zern committed
34
    lea        eax,  [eax + 16]
Johann's avatar
Johann committed
35
    movdqu     xmm2, [edx]
James Zern's avatar
James Zern committed
36
37
38
39
40
41
42
43
44
45
46
47
    lea        edx,  [edx + 16]
    movdqa     xmm3, xmm1  // abs trick
    psubusb    xmm1, xmm2
    psubusb    xmm2, xmm3
    por        xmm1, xmm2
    movdqa     xmm2, xmm1
    punpcklbw  xmm1, xmm5
    punpckhbw  xmm2, xmm5
    pmaddwd    xmm1, xmm1
    pmaddwd    xmm2, xmm2
    paddd      xmm0, xmm1
    paddd      xmm0, xmm2
Johann's avatar
Johann committed
48
    sub        ecx, 16
James Zern's avatar
James Zern committed
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
    jg         wloop

    pshufd     xmm1, xmm0, 0xee
    paddd      xmm0, xmm1
    pshufd     xmm1, xmm0, 0x01
    paddd      xmm0, xmm1
    movd       eax, xmm0
    ret
  }
}

// Visual C 2012 required for AVX2.
#if _MSC_VER >= 1700
// C4752: found Intel(R) Advanced Vector Extensions; consider using /arch:AVX.
#pragma warning(disable: 4752)
James Zern's avatar
James Zern committed
64
__declspec(naked)
James Zern's avatar
James Zern committed
65
66
uint32 SumSquareError_AVX2(const uint8* src_a, const uint8* src_b, int count) {
  __asm {
Yaowu Xu's avatar
Yaowu Xu committed
67
68
69
    mov        eax, [esp + 4]    // src_a
    mov        edx, [esp + 8]    // src_b
    mov        ecx, [esp + 12]   // count
70
71
    vpxor      ymm0, ymm0, ymm0  // sum
    vpxor      ymm5, ymm5, ymm5  // constant 0 for unpck
James Zern's avatar
James Zern committed
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
    sub        edx, eax

  wloop:
    vmovdqu    ymm1, [eax]
    vmovdqu    ymm2, [eax + edx]
    lea        eax,  [eax + 32]
    vpsubusb   ymm3, ymm1, ymm2  // abs difference trick
    vpsubusb   ymm2, ymm2, ymm1
    vpor       ymm1, ymm2, ymm3
    vpunpcklbw ymm2, ymm1, ymm5  // u16.  mutates order.
    vpunpckhbw ymm1, ymm1, ymm5
    vpmaddwd   ymm2, ymm2, ymm2  // square + hadd to u32.
    vpmaddwd   ymm1, ymm1, ymm1
    vpaddd     ymm0, ymm0, ymm1
    vpaddd     ymm0, ymm0, ymm2
Johann's avatar
Johann committed
87
    sub        ecx, 32
James Zern's avatar
James Zern committed
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
    jg         wloop

    vpshufd    ymm1, ymm0, 0xee  // 3, 2 + 1, 0 both lanes.
    vpaddd     ymm0, ymm0, ymm1
    vpshufd    ymm1, ymm0, 0x01  // 1 + 0 both lanes.
    vpaddd     ymm0, ymm0, ymm1
    vpermq     ymm1, ymm0, 0x02  // high + low lane.
    vpaddd     ymm0, ymm0, ymm1
    vmovd      eax, xmm0
    vzeroupper
    ret
  }
}
#endif  // _MSC_VER >= 1700

#define HAS_HASHDJB2_SSE41
static uvec32 kHash16x33 = { 0x92d9e201, 0, 0, 0 };  // 33 ^ 16
static uvec32 kHashMul0 = {
  0x0c3525e1,  // 33 ^ 15
  0xa3476dc1,  // 33 ^ 14
  0x3b4039a1,  // 33 ^ 13
  0x4f5f0981,  // 33 ^ 12
};
static uvec32 kHashMul1 = {
  0x30f35d61,  // 33 ^ 11
  0x855cb541,  // 33 ^ 10
  0x040a9121,  // 33 ^ 9
  0x747c7101,  // 33 ^ 8
};
static uvec32 kHashMul2 = {
  0xec41d4e1,  // 33 ^ 7
  0x4cfa3cc1,  // 33 ^ 6
  0x025528a1,  // 33 ^ 5
  0x00121881,  // 33 ^ 4
};
static uvec32 kHashMul3 = {
  0x00008c61,  // 33 ^ 3
  0x00000441,  // 33 ^ 2
  0x00000021,  // 33 ^ 1
  0x00000001,  // 33 ^ 0
};

// 27: 66 0F 38 40 C6     pmulld      xmm0,xmm6
// 44: 66 0F 38 40 DD     pmulld      xmm3,xmm5
// 59: 66 0F 38 40 E5     pmulld      xmm4,xmm5
// 72: 66 0F 38 40 D5     pmulld      xmm2,xmm5
// 83: 66 0F 38 40 CD     pmulld      xmm1,xmm5
#define pmulld(reg) _asm _emit 0x66 _asm _emit 0x0F _asm _emit 0x38 \
    _asm _emit 0x40 _asm _emit reg

James Zern's avatar
James Zern committed
138
__declspec(naked)
James Zern's avatar
James Zern committed
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
uint32 HashDjb2_SSE41(const uint8* src, int count, uint32 seed) {
  __asm {
    mov        eax, [esp + 4]    // src
    mov        ecx, [esp + 8]    // count
    movd       xmm0, [esp + 12]  // seed

    pxor       xmm7, xmm7        // constant 0 for unpck
    movdqa     xmm6, kHash16x33

  wloop:
    movdqu     xmm1, [eax]       // src[0-15]
    lea        eax, [eax + 16]
    pmulld(0xc6)                 // pmulld      xmm0,xmm6  hash *= 33 ^ 16
    movdqa     xmm5, kHashMul0
    movdqa     xmm2, xmm1
    punpcklbw  xmm2, xmm7        // src[0-7]
    movdqa     xmm3, xmm2
    punpcklwd  xmm3, xmm7        // src[0-3]
    pmulld(0xdd)                 // pmulld     xmm3, xmm5
    movdqa     xmm5, kHashMul1
    movdqa     xmm4, xmm2
    punpckhwd  xmm4, xmm7        // src[4-7]
    pmulld(0xe5)                 // pmulld     xmm4, xmm5
    movdqa     xmm5, kHashMul2
    punpckhbw  xmm1, xmm7        // src[8-15]
    movdqa     xmm2, xmm1
    punpcklwd  xmm2, xmm7        // src[8-11]
    pmulld(0xd5)                 // pmulld     xmm2, xmm5
    movdqa     xmm5, kHashMul3
    punpckhwd  xmm1, xmm7        // src[12-15]
    pmulld(0xcd)                 // pmulld     xmm1, xmm5
    paddd      xmm3, xmm4        // add 16 results
    paddd      xmm1, xmm2
    paddd      xmm1, xmm3

    pshufd     xmm2, xmm1, 0x0e  // upper 2 dwords
    paddd      xmm1, xmm2
    pshufd     xmm2, xmm1, 0x01
    paddd      xmm1, xmm2
    paddd      xmm0, xmm1
Johann's avatar
Johann committed
179
    sub        ecx, 16
James Zern's avatar
James Zern committed
180
181
182
183
184
185
186
187
188
    jg         wloop

    movd       eax, xmm0         // return hash
    ret
  }
}

// Visual C 2012 required for AVX2.
#if _MSC_VER >= 1700
James Zern's avatar
James Zern committed
189
__declspec(naked)
James Zern's avatar
James Zern committed
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
uint32 HashDjb2_AVX2(const uint8* src, int count, uint32 seed) {
  __asm {
    mov        eax, [esp + 4]    // src
    mov        ecx, [esp + 8]    // count
    movd       xmm0, [esp + 12]  // seed
    movdqa     xmm6, kHash16x33

  wloop:
    vpmovzxbd  xmm3, dword ptr [eax]  // src[0-3]
    pmulld     xmm0, xmm6  // hash *= 33 ^ 16
    vpmovzxbd  xmm4, dword ptr [eax + 4]  // src[4-7]
    pmulld     xmm3, kHashMul0
    vpmovzxbd  xmm2, dword ptr [eax + 8]  // src[8-11]
    pmulld     xmm4, kHashMul1
    vpmovzxbd  xmm1, dword ptr [eax + 12]  // src[12-15]
    pmulld     xmm2, kHashMul2
    lea        eax, [eax + 16]
    pmulld     xmm1, kHashMul3
    paddd      xmm3, xmm4        // add 16 results
    paddd      xmm1, xmm2
    paddd      xmm1, xmm3
    pshufd     xmm2, xmm1, 0x0e  // upper 2 dwords
    paddd      xmm1, xmm2
    pshufd     xmm2, xmm1, 0x01
    paddd      xmm1, xmm2
    paddd      xmm0, xmm1
Johann's avatar
Johann committed
216
    sub        ecx, 16
James Zern's avatar
James Zern committed
217
218
219
220
221
222
223
    jg         wloop

    movd       eax, xmm0         // return hash
    ret
  }
}
#endif  // _MSC_VER >= 1700
James Zern's avatar
James Zern committed
224
#endif  // !defined(LIBYUV_DISABLE_X86) && defined(_M_IX86)
James Zern's avatar
James Zern committed
225
226
227
228
229

#ifdef __cplusplus
}  // extern "C"
}  // namespace libyuv
#endif