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comparison: media/libjpeg/simd/jfss2int-64.asm

media/libjpeg/simd/jfss2int-64.asm

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1 ;
2 ; jfss2int-64.asm - accurate integer FDCT (64-bit SSE2)
3 ;
4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
5 ; Copyright 2009 D. R. Commander
6 ;
7 ; Based on
8 ; x86 SIMD extension for IJG JPEG library
9 ; Copyright (C) 1999-2006, MIYASAKA Masaru.
10 ; For conditions of distribution and use, see copyright notice in jsimdext.inc
11 ;
12 ; This file should be assembled with NASM (Netwide Assembler),
13 ; can *not* be assembled with Microsoft's MASM or any compatible
14 ; assembler (including Borland's Turbo Assembler).
15 ; NASM is available from http://nasm.sourceforge.net/ or
16 ; http://sourceforge.net/project/showfiles.php?group_id=6208
17 ;
18 ; This file contains a slow-but-accurate integer implementation of the
19 ; forward DCT (Discrete Cosine Transform). The following code is based
20 ; directly on the IJG's original jfdctint.c; see the jfdctint.c for
21 ; more details.
22 ;
23 ; [TAB8]
24
25 %include "jsimdext.inc"
26 %include "jdct.inc"
27
28 ; --------------------------------------------------------------------------
29
30 %define CONST_BITS 13
31 %define PASS1_BITS 2
32
33 %define DESCALE_P1 (CONST_BITS-PASS1_BITS)
34 %define DESCALE_P2 (CONST_BITS+PASS1_BITS)
35
36 %if CONST_BITS == 13
37 F_0_298 equ 2446 ; FIX(0.298631336)
38 F_0_390 equ 3196 ; FIX(0.390180644)
39 F_0_541 equ 4433 ; FIX(0.541196100)
40 F_0_765 equ 6270 ; FIX(0.765366865)
41 F_0_899 equ 7373 ; FIX(0.899976223)
42 F_1_175 equ 9633 ; FIX(1.175875602)
43 F_1_501 equ 12299 ; FIX(1.501321110)
44 F_1_847 equ 15137 ; FIX(1.847759065)
45 F_1_961 equ 16069 ; FIX(1.961570560)
46 F_2_053 equ 16819 ; FIX(2.053119869)
47 F_2_562 equ 20995 ; FIX(2.562915447)
48 F_3_072 equ 25172 ; FIX(3.072711026)
49 %else
50 ; NASM cannot do compile-time arithmetic on floating-point constants.
51 %define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n))
52 F_0_298 equ DESCALE( 320652955,30-CONST_BITS) ; FIX(0.298631336)
53 F_0_390 equ DESCALE( 418953276,30-CONST_BITS) ; FIX(0.390180644)
54 F_0_541 equ DESCALE( 581104887,30-CONST_BITS) ; FIX(0.541196100)
55 F_0_765 equ DESCALE( 821806413,30-CONST_BITS) ; FIX(0.765366865)
56 F_0_899 equ DESCALE( 966342111,30-CONST_BITS) ; FIX(0.899976223)
57 F_1_175 equ DESCALE(1262586813,30-CONST_BITS) ; FIX(1.175875602)
58 F_1_501 equ DESCALE(1612031267,30-CONST_BITS) ; FIX(1.501321110)
59 F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065)
60 F_1_961 equ DESCALE(2106220350,30-CONST_BITS) ; FIX(1.961570560)
61 F_2_053 equ DESCALE(2204520673,30-CONST_BITS) ; FIX(2.053119869)
62 F_2_562 equ DESCALE(2751909506,30-CONST_BITS) ; FIX(2.562915447)
63 F_3_072 equ DESCALE(3299298341,30-CONST_BITS) ; FIX(3.072711026)
64 %endif
65
66 ; --------------------------------------------------------------------------
67 SECTION SEG_CONST
68
69 alignz 16
70 global EXTN(jconst_fdct_islow_sse2)
71
72 EXTN(jconst_fdct_islow_sse2):
73
74 PW_F130_F054 times 4 dw (F_0_541+F_0_765), F_0_541
75 PW_F054_MF130 times 4 dw F_0_541, (F_0_541-F_1_847)
76 PW_MF078_F117 times 4 dw (F_1_175-F_1_961), F_1_175
77 PW_F117_F078 times 4 dw F_1_175, (F_1_175-F_0_390)
78 PW_MF060_MF089 times 4 dw (F_0_298-F_0_899),-F_0_899
79 PW_MF089_F060 times 4 dw -F_0_899, (F_1_501-F_0_899)
80 PW_MF050_MF256 times 4 dw (F_2_053-F_2_562),-F_2_562
81 PW_MF256_F050 times 4 dw -F_2_562, (F_3_072-F_2_562)
82 PD_DESCALE_P1 times 4 dd 1 << (DESCALE_P1-1)
83 PD_DESCALE_P2 times 4 dd 1 << (DESCALE_P2-1)
84 PW_DESCALE_P2X times 8 dw 1 << (PASS1_BITS-1)
85
86 alignz 16
87
88 ; --------------------------------------------------------------------------
89 SECTION SEG_TEXT
90 BITS 64
91 ;
92 ; Perform the forward DCT on one block of samples.
93 ;
94 ; GLOBAL(void)
95 ; jsimd_fdct_islow_sse2 (DCTELEM * data)
96 ;
97
98 ; r10 = DCTELEM * data
99
100 %define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
101 %define WK_NUM 6
102
103 align 16
104 global EXTN(jsimd_fdct_islow_sse2)
105
106 EXTN(jsimd_fdct_islow_sse2):
107 push rbp
108 mov rax,rsp ; rax = original rbp
109 sub rsp, byte 4
110 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
111 mov [rsp],rax
112 mov rbp,rsp ; rbp = aligned rbp
113 lea rsp, [wk(0)]
114 collect_args
115
116 ; ---- Pass 1: process rows.
117
118 mov rdx, r10 ; (DCTELEM *)
119
120 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)]
121 movdqa xmm1, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_DCTELEM)]
122 movdqa xmm2, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_DCTELEM)]
123 movdqa xmm3, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_DCTELEM)]
124
125 ; xmm0=(00 01 02 03 04 05 06 07), xmm2=(20 21 22 23 24 25 26 27)
126 ; xmm1=(10 11 12 13 14 15 16 17), xmm3=(30 31 32 33 34 35 36 37)
127
128 movdqa xmm4,xmm0 ; transpose coefficients(phase 1)
129 punpcklwd xmm0,xmm1 ; xmm0=(00 10 01 11 02 12 03 13)
130 punpckhwd xmm4,xmm1 ; xmm4=(04 14 05 15 06 16 07 17)
131 movdqa xmm5,xmm2 ; transpose coefficients(phase 1)
132 punpcklwd xmm2,xmm3 ; xmm2=(20 30 21 31 22 32 23 33)
133 punpckhwd xmm5,xmm3 ; xmm5=(24 34 25 35 26 36 27 37)
134
135 movdqa xmm6, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_DCTELEM)]
136 movdqa xmm7, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)]
137 movdqa xmm1, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)]
138 movdqa xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_DCTELEM)]
139
140 ; xmm6=( 4 12 20 28 36 44 52 60), xmm1=( 6 14 22 30 38 46 54 62)
141 ; xmm7=( 5 13 21 29 37 45 53 61), xmm3=( 7 15 23 31 39 47 55 63)
142
143 movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(20 30 21 31 22 32 23 33)
144 movdqa XMMWORD [wk(1)], xmm5 ; wk(1)=(24 34 25 35 26 36 27 37)
145
146 movdqa xmm2,xmm6 ; transpose coefficients(phase 1)
147 punpcklwd xmm6,xmm7 ; xmm6=(40 50 41 51 42 52 43 53)
148 punpckhwd xmm2,xmm7 ; xmm2=(44 54 45 55 46 56 47 57)
149 movdqa xmm5,xmm1 ; transpose coefficients(phase 1)
150 punpcklwd xmm1,xmm3 ; xmm1=(60 70 61 71 62 72 63 73)
151 punpckhwd xmm5,xmm3 ; xmm5=(64 74 65 75 66 76 67 77)
152
153 movdqa xmm7,xmm6 ; transpose coefficients(phase 2)
154 punpckldq xmm6,xmm1 ; xmm6=(40 50 60 70 41 51 61 71)
155 punpckhdq xmm7,xmm1 ; xmm7=(42 52 62 72 43 53 63 73)
156 movdqa xmm3,xmm2 ; transpose coefficients(phase 2)
157 punpckldq xmm2,xmm5 ; xmm2=(44 54 64 74 45 55 65 75)
158 punpckhdq xmm3,xmm5 ; xmm3=(46 56 66 76 47 57 67 77)
159
160 movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(20 30 21 31 22 32 23 33)
161 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=(24 34 25 35 26 36 27 37)
162 movdqa XMMWORD [wk(2)], xmm7 ; wk(2)=(42 52 62 72 43 53 63 73)
163 movdqa XMMWORD [wk(3)], xmm2 ; wk(3)=(44 54 64 74 45 55 65 75)
164
165 movdqa xmm7,xmm0 ; transpose coefficients(phase 2)
166 punpckldq xmm0,xmm1 ; xmm0=(00 10 20 30 01 11 21 31)
167 punpckhdq xmm7,xmm1 ; xmm7=(02 12 22 32 03 13 23 33)
168 movdqa xmm2,xmm4 ; transpose coefficients(phase 2)
169 punpckldq xmm4,xmm5 ; xmm4=(04 14 24 34 05 15 25 35)
170 punpckhdq xmm2,xmm5 ; xmm2=(06 16 26 36 07 17 27 37)
171
172 movdqa xmm1,xmm0 ; transpose coefficients(phase 3)
173 punpcklqdq xmm0,xmm6 ; xmm0=(00 10 20 30 40 50 60 70)=data0
174 punpckhqdq xmm1,xmm6 ; xmm1=(01 11 21 31 41 51 61 71)=data1
175 movdqa xmm5,xmm2 ; transpose coefficients(phase 3)
176 punpcklqdq xmm2,xmm3 ; xmm2=(06 16 26 36 46 56 66 76)=data6
177 punpckhqdq xmm5,xmm3 ; xmm5=(07 17 27 37 47 57 67 77)=data7
178
179 movdqa xmm6,xmm1
180 movdqa xmm3,xmm0
181 psubw xmm1,xmm2 ; xmm1=data1-data6=tmp6
182 psubw xmm0,xmm5 ; xmm0=data0-data7=tmp7
183 paddw xmm6,xmm2 ; xmm6=data1+data6=tmp1
184 paddw xmm3,xmm5 ; xmm3=data0+data7=tmp0
185
186 movdqa xmm2, XMMWORD [wk(2)] ; xmm2=(42 52 62 72 43 53 63 73)
187 movdqa xmm5, XMMWORD [wk(3)] ; xmm5=(44 54 64 74 45 55 65 75)
188 movdqa XMMWORD [wk(0)], xmm1 ; wk(0)=tmp6
189 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp7
190
191 movdqa xmm1,xmm7 ; transpose coefficients(phase 3)
192 punpcklqdq xmm7,xmm2 ; xmm7=(02 12 22 32 42 52 62 72)=data2
193 punpckhqdq xmm1,xmm2 ; xmm1=(03 13 23 33 43 53 63 73)=data3
194 movdqa xmm0,xmm4 ; transpose coefficients(phase 3)
195 punpcklqdq xmm4,xmm5 ; xmm4=(04 14 24 34 44 54 64 74)=data4
196 punpckhqdq xmm0,xmm5 ; xmm0=(05 15 25 35 45 55 65 75)=data5
197
198 movdqa xmm2,xmm1
199 movdqa xmm5,xmm7
200 paddw xmm1,xmm4 ; xmm1=data3+data4=tmp3
201 paddw xmm7,xmm0 ; xmm7=data2+data5=tmp2
202 psubw xmm2,xmm4 ; xmm2=data3-data4=tmp4
203 psubw xmm5,xmm0 ; xmm5=data2-data5=tmp5
204
205 ; -- Even part
206
207 movdqa xmm4,xmm3
208 movdqa xmm0,xmm6
209 paddw xmm3,xmm1 ; xmm3=tmp10
210 paddw xmm6,xmm7 ; xmm6=tmp11
211 psubw xmm4,xmm1 ; xmm4=tmp13
212 psubw xmm0,xmm7 ; xmm0=tmp12
213
214 movdqa xmm1,xmm3
215 paddw xmm3,xmm6 ; xmm3=tmp10+tmp11
216 psubw xmm1,xmm6 ; xmm1=tmp10-tmp11
217
218 psllw xmm3,PASS1_BITS ; xmm3=data0
219 psllw xmm1,PASS1_BITS ; xmm1=data4
220
221 movdqa XMMWORD [wk(2)], xmm3 ; wk(2)=data0
222 movdqa XMMWORD [wk(3)], xmm1 ; wk(3)=data4
223
224 ; (Original)
225 ; z1 = (tmp12 + tmp13) * 0.541196100;
226 ; data2 = z1 + tmp13 * 0.765366865;
227 ; data6 = z1 + tmp12 * -1.847759065;
228 ;
229 ; (This implementation)
230 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100;
231 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065);
232
233 movdqa xmm7,xmm4 ; xmm4=tmp13
234 movdqa xmm6,xmm4
235 punpcklwd xmm7,xmm0 ; xmm0=tmp12
236 punpckhwd xmm6,xmm0
237 movdqa xmm4,xmm7
238 movdqa xmm0,xmm6
239 pmaddwd xmm7,[rel PW_F130_F054] ; xmm7=data2L
240 pmaddwd xmm6,[rel PW_F130_F054] ; xmm6=data2H
241 pmaddwd xmm4,[rel PW_F054_MF130] ; xmm4=data6L
242 pmaddwd xmm0,[rel PW_F054_MF130] ; xmm0=data6H
243
244 paddd xmm7,[rel PD_DESCALE_P1]
245 paddd xmm6,[rel PD_DESCALE_P1]
246 psrad xmm7,DESCALE_P1
247 psrad xmm6,DESCALE_P1
248 paddd xmm4,[rel PD_DESCALE_P1]
249 paddd xmm0,[rel PD_DESCALE_P1]
250 psrad xmm4,DESCALE_P1
251 psrad xmm0,DESCALE_P1
252
253 packssdw xmm7,xmm6 ; xmm7=data2
254 packssdw xmm4,xmm0 ; xmm4=data6
255
256 movdqa XMMWORD [wk(4)], xmm7 ; wk(4)=data2
257 movdqa XMMWORD [wk(5)], xmm4 ; wk(5)=data6
258
259 ; -- Odd part
260
261 movdqa xmm3, XMMWORD [wk(0)] ; xmm3=tmp6
262 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=tmp7
263
264 movdqa xmm6,xmm2 ; xmm2=tmp4
265 movdqa xmm0,xmm5 ; xmm5=tmp5
266 paddw xmm6,xmm3 ; xmm6=z3
267 paddw xmm0,xmm1 ; xmm0=z4
268
269 ; (Original)
270 ; z5 = (z3 + z4) * 1.175875602;
271 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
272 ; z3 += z5; z4 += z5;
273 ;
274 ; (This implementation)
275 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
276 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
277
278 movdqa xmm7,xmm6
279 movdqa xmm4,xmm6
280 punpcklwd xmm7,xmm0
281 punpckhwd xmm4,xmm0
282 movdqa xmm6,xmm7
283 movdqa xmm0,xmm4
284 pmaddwd xmm7,[rel PW_MF078_F117] ; xmm7=z3L
285 pmaddwd xmm4,[rel PW_MF078_F117] ; xmm4=z3H
286 pmaddwd xmm6,[rel PW_F117_F078] ; xmm6=z4L
287 pmaddwd xmm0,[rel PW_F117_F078] ; xmm0=z4H
288
289 movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=z3L
290 movdqa XMMWORD [wk(1)], xmm4 ; wk(1)=z3H
291
292 ; (Original)
293 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6;
294 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869;
295 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110;
296 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;
297 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4;
298 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4;
299 ;
300 ; (This implementation)
301 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223;
302 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447;
303 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447);
304 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223);
305 ; data7 = tmp4 + z3; data5 = tmp5 + z4;
306 ; data3 = tmp6 + z3; data1 = tmp7 + z4;
307
308 movdqa xmm7,xmm2
309 movdqa xmm4,xmm2
310 punpcklwd xmm7,xmm1
311 punpckhwd xmm4,xmm1
312 movdqa xmm2,xmm7
313 movdqa xmm1,xmm4
314 pmaddwd xmm7,[rel PW_MF060_MF089] ; xmm7=tmp4L
315 pmaddwd xmm4,[rel PW_MF060_MF089] ; xmm4=tmp4H
316 pmaddwd xmm2,[rel PW_MF089_F060] ; xmm2=tmp7L
317 pmaddwd xmm1,[rel PW_MF089_F060] ; xmm1=tmp7H
318
319 paddd xmm7, XMMWORD [wk(0)] ; xmm7=data7L
320 paddd xmm4, XMMWORD [wk(1)] ; xmm4=data7H
321 paddd xmm2,xmm6 ; xmm2=data1L
322 paddd xmm1,xmm0 ; xmm1=data1H
323
324 paddd xmm7,[rel PD_DESCALE_P1]
325 paddd xmm4,[rel PD_DESCALE_P1]
326 psrad xmm7,DESCALE_P1
327 psrad xmm4,DESCALE_P1
328 paddd xmm2,[rel PD_DESCALE_P1]
329 paddd xmm1,[rel PD_DESCALE_P1]
330 psrad xmm2,DESCALE_P1
331 psrad xmm1,DESCALE_P1
332
333 packssdw xmm7,xmm4 ; xmm7=data7
334 packssdw xmm2,xmm1 ; xmm2=data1
335
336 movdqa xmm4,xmm5
337 movdqa xmm1,xmm5
338 punpcklwd xmm4,xmm3
339 punpckhwd xmm1,xmm3
340 movdqa xmm5,xmm4
341 movdqa xmm3,xmm1
342 pmaddwd xmm4,[rel PW_MF050_MF256] ; xmm4=tmp5L
343 pmaddwd xmm1,[rel PW_MF050_MF256] ; xmm1=tmp5H
344 pmaddwd xmm5,[rel PW_MF256_F050] ; xmm5=tmp6L
345 pmaddwd xmm3,[rel PW_MF256_F050] ; xmm3=tmp6H
346
347 paddd xmm4,xmm6 ; xmm4=data5L
348 paddd xmm1,xmm0 ; xmm1=data5H
349 paddd xmm5, XMMWORD [wk(0)] ; xmm5=data3L
350 paddd xmm3, XMMWORD [wk(1)] ; xmm3=data3H
351
352 paddd xmm4,[rel PD_DESCALE_P1]
353 paddd xmm1,[rel PD_DESCALE_P1]
354 psrad xmm4,DESCALE_P1
355 psrad xmm1,DESCALE_P1
356 paddd xmm5,[rel PD_DESCALE_P1]
357 paddd xmm3,[rel PD_DESCALE_P1]
358 psrad xmm5,DESCALE_P1
359 psrad xmm3,DESCALE_P1
360
361 packssdw xmm4,xmm1 ; xmm4=data5
362 packssdw xmm5,xmm3 ; xmm5=data3
363
364 ; ---- Pass 2: process columns.
365
366 movdqa xmm6, XMMWORD [wk(2)] ; xmm6=col0
367 movdqa xmm0, XMMWORD [wk(4)] ; xmm0=col2
368
369 ; xmm6=(00 10 20 30 40 50 60 70), xmm0=(02 12 22 32 42 52 62 72)
370 ; xmm2=(01 11 21 31 41 51 61 71), xmm5=(03 13 23 33 43 53 63 73)
371
372 movdqa xmm1,xmm6 ; transpose coefficients(phase 1)
373 punpcklwd xmm6,xmm2 ; xmm6=(00 01 10 11 20 21 30 31)
374 punpckhwd xmm1,xmm2 ; xmm1=(40 41 50 51 60 61 70 71)
375 movdqa xmm3,xmm0 ; transpose coefficients(phase 1)
376 punpcklwd xmm0,xmm5 ; xmm0=(02 03 12 13 22 23 32 33)
377 punpckhwd xmm3,xmm5 ; xmm3=(42 43 52 53 62 63 72 73)
378
379 movdqa xmm2, XMMWORD [wk(3)] ; xmm2=col4
380 movdqa xmm5, XMMWORD [wk(5)] ; xmm5=col6
381
382 ; xmm2=(04 14 24 34 44 54 64 74), xmm5=(06 16 26 36 46 56 66 76)
383 ; xmm4=(05 15 25 35 45 55 65 75), xmm7=(07 17 27 37 47 57 67 77)
384
385 movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=(02 03 12 13 22 23 32 33)
386 movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=(42 43 52 53 62 63 72 73)
387
388 movdqa xmm0,xmm2 ; transpose coefficients(phase 1)
389 punpcklwd xmm2,xmm4 ; xmm2=(04 05 14 15 24 25 34 35)
390 punpckhwd xmm0,xmm4 ; xmm0=(44 45 54 55 64 65 74 75)
391 movdqa xmm3,xmm5 ; transpose coefficients(phase 1)
392 punpcklwd xmm5,xmm7 ; xmm5=(06 07 16 17 26 27 36 37)
393 punpckhwd xmm3,xmm7 ; xmm3=(46 47 56 57 66 67 76 77)
394
395 movdqa xmm4,xmm2 ; transpose coefficients(phase 2)
396 punpckldq xmm2,xmm5 ; xmm2=(04 05 06 07 14 15 16 17)
397 punpckhdq xmm4,xmm5 ; xmm4=(24 25 26 27 34 35 36 37)
398 movdqa xmm7,xmm0 ; transpose coefficients(phase 2)
399 punpckldq xmm0,xmm3 ; xmm0=(44 45 46 47 54 55 56 57)
400 punpckhdq xmm7,xmm3 ; xmm7=(64 65 66 67 74 75 76 77)
401
402 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=(02 03 12 13 22 23 32 33)
403 movdqa xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53 62 63 72 73)
404 movdqa XMMWORD [wk(2)], xmm4 ; wk(2)=(24 25 26 27 34 35 36 37)
405 movdqa XMMWORD [wk(3)], xmm0 ; wk(3)=(44 45 46 47 54 55 56 57)
406
407 movdqa xmm4,xmm6 ; transpose coefficients(phase 2)
408 punpckldq xmm6,xmm5 ; xmm6=(00 01 02 03 10 11 12 13)
409 punpckhdq xmm4,xmm5 ; xmm4=(20 21 22 23 30 31 32 33)
410 movdqa xmm0,xmm1 ; transpose coefficients(phase 2)
411 punpckldq xmm1,xmm3 ; xmm1=(40 41 42 43 50 51 52 53)
412 punpckhdq xmm0,xmm3 ; xmm0=(60 61 62 63 70 71 72 73)
413
414 movdqa xmm5,xmm6 ; transpose coefficients(phase 3)
415 punpcklqdq xmm6,xmm2 ; xmm6=(00 01 02 03 04 05 06 07)=data0
416 punpckhqdq xmm5,xmm2 ; xmm5=(10 11 12 13 14 15 16 17)=data1
417 movdqa xmm3,xmm0 ; transpose coefficients(phase 3)
418 punpcklqdq xmm0,xmm7 ; xmm0=(60 61 62 63 64 65 66 67)=data6
419 punpckhqdq xmm3,xmm7 ; xmm3=(70 71 72 73 74 75 76 77)=data7
420
421 movdqa xmm2,xmm5
422 movdqa xmm7,xmm6
423 psubw xmm5,xmm0 ; xmm5=data1-data6=tmp6
424 psubw xmm6,xmm3 ; xmm6=data0-data7=tmp7
425 paddw xmm2,xmm0 ; xmm2=data1+data6=tmp1
426 paddw xmm7,xmm3 ; xmm7=data0+data7=tmp0
427
428 movdqa xmm0, XMMWORD [wk(2)] ; xmm0=(24 25 26 27 34 35 36 37)
429 movdqa xmm3, XMMWORD [wk(3)] ; xmm3=(44 45 46 47 54 55 56 57)
430 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=tmp6
431 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7
432
433 movdqa xmm5,xmm4 ; transpose coefficients(phase 3)
434 punpcklqdq xmm4,xmm0 ; xmm4=(20 21 22 23 24 25 26 27)=data2
435 punpckhqdq xmm5,xmm0 ; xmm5=(30 31 32 33 34 35 36 37)=data3
436 movdqa xmm6,xmm1 ; transpose coefficients(phase 3)
437 punpcklqdq xmm1,xmm3 ; xmm1=(40 41 42 43 44 45 46 47)=data4
438 punpckhqdq xmm6,xmm3 ; xmm6=(50 51 52 53 54 55 56 57)=data5
439
440 movdqa xmm0,xmm5
441 movdqa xmm3,xmm4
442 paddw xmm5,xmm1 ; xmm5=data3+data4=tmp3
443 paddw xmm4,xmm6 ; xmm4=data2+data5=tmp2
444 psubw xmm0,xmm1 ; xmm0=data3-data4=tmp4
445 psubw xmm3,xmm6 ; xmm3=data2-data5=tmp5
446
447 ; -- Even part
448
449 movdqa xmm1,xmm7
450 movdqa xmm6,xmm2
451 paddw xmm7,xmm5 ; xmm7=tmp10
452 paddw xmm2,xmm4 ; xmm2=tmp11
453 psubw xmm1,xmm5 ; xmm1=tmp13
454 psubw xmm6,xmm4 ; xmm6=tmp12
455
456 movdqa xmm5,xmm7
457 paddw xmm7,xmm2 ; xmm7=tmp10+tmp11
458 psubw xmm5,xmm2 ; xmm5=tmp10-tmp11
459
460 paddw xmm7,[rel PW_DESCALE_P2X]
461 paddw xmm5,[rel PW_DESCALE_P2X]
462 psraw xmm7,PASS1_BITS ; xmm7=data0
463 psraw xmm5,PASS1_BITS ; xmm5=data4
464
465 movdqa XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)], xmm7
466 movdqa XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_DCTELEM)], xmm5
467
468 ; (Original)
469 ; z1 = (tmp12 + tmp13) * 0.541196100;
470 ; data2 = z1 + tmp13 * 0.765366865;
471 ; data6 = z1 + tmp12 * -1.847759065;
472 ;
473 ; (This implementation)
474 ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100;
475 ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065);
476
477 movdqa xmm4,xmm1 ; xmm1=tmp13
478 movdqa xmm2,xmm1
479 punpcklwd xmm4,xmm6 ; xmm6=tmp12
480 punpckhwd xmm2,xmm6
481 movdqa xmm1,xmm4
482 movdqa xmm6,xmm2
483 pmaddwd xmm4,[rel PW_F130_F054] ; xmm4=data2L
484 pmaddwd xmm2,[rel PW_F130_F054] ; xmm2=data2H
485 pmaddwd xmm1,[rel PW_F054_MF130] ; xmm1=data6L
486 pmaddwd xmm6,[rel PW_F054_MF130] ; xmm6=data6H
487
488 paddd xmm4,[rel PD_DESCALE_P2]
489 paddd xmm2,[rel PD_DESCALE_P2]
490 psrad xmm4,DESCALE_P2
491 psrad xmm2,DESCALE_P2
492 paddd xmm1,[rel PD_DESCALE_P2]
493 paddd xmm6,[rel PD_DESCALE_P2]
494 psrad xmm1,DESCALE_P2
495 psrad xmm6,DESCALE_P2
496
497 packssdw xmm4,xmm2 ; xmm4=data2
498 packssdw xmm1,xmm6 ; xmm1=data6
499
500 movdqa XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_DCTELEM)], xmm4
501 movdqa XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)], xmm1
502
503 ; -- Odd part
504
505 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp6
506 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp7
507
508 movdqa xmm2,xmm0 ; xmm0=tmp4
509 movdqa xmm6,xmm3 ; xmm3=tmp5
510 paddw xmm2,xmm7 ; xmm2=z3
511 paddw xmm6,xmm5 ; xmm6=z4
512
513 ; (Original)
514 ; z5 = (z3 + z4) * 1.175875602;
515 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
516 ; z3 += z5; z4 += z5;
517 ;
518 ; (This implementation)
519 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
520 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
521
522 movdqa xmm4,xmm2
523 movdqa xmm1,xmm2
524 punpcklwd xmm4,xmm6
525 punpckhwd xmm1,xmm6
526 movdqa xmm2,xmm4
527 movdqa xmm6,xmm1
528 pmaddwd xmm4,[rel PW_MF078_F117] ; xmm4=z3L
529 pmaddwd xmm1,[rel PW_MF078_F117] ; xmm1=z3H
530 pmaddwd xmm2,[rel PW_F117_F078] ; xmm2=z4L
531 pmaddwd xmm6,[rel PW_F117_F078] ; xmm6=z4H
532
533 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=z3L
534 movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=z3H
535
536 ; (Original)
537 ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6;
538 ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869;
539 ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110;
540 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;
541 ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4;
542 ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4;
543 ;
544 ; (This implementation)
545 ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223;
546 ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447;
547 ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447);
548 ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223);
549 ; data7 = tmp4 + z3; data5 = tmp5 + z4;
550 ; data3 = tmp6 + z3; data1 = tmp7 + z4;
551
552 movdqa xmm4,xmm0
553 movdqa xmm1,xmm0
554 punpcklwd xmm4,xmm5
555 punpckhwd xmm1,xmm5
556 movdqa xmm0,xmm4
557 movdqa xmm5,xmm1
558 pmaddwd xmm4,[rel PW_MF060_MF089] ; xmm4=tmp4L
559 pmaddwd xmm1,[rel PW_MF060_MF089] ; xmm1=tmp4H
560 pmaddwd xmm0,[rel PW_MF089_F060] ; xmm0=tmp7L
561 pmaddwd xmm5,[rel PW_MF089_F060] ; xmm5=tmp7H
562
563 paddd xmm4, XMMWORD [wk(0)] ; xmm4=data7L
564 paddd xmm1, XMMWORD [wk(1)] ; xmm1=data7H
565 paddd xmm0,xmm2 ; xmm0=data1L
566 paddd xmm5,xmm6 ; xmm5=data1H
567
568 paddd xmm4,[rel PD_DESCALE_P2]
569 paddd xmm1,[rel PD_DESCALE_P2]
570 psrad xmm4,DESCALE_P2
571 psrad xmm1,DESCALE_P2
572 paddd xmm0,[rel PD_DESCALE_P2]
573 paddd xmm5,[rel PD_DESCALE_P2]
574 psrad xmm0,DESCALE_P2
575 psrad xmm5,DESCALE_P2
576
577 packssdw xmm4,xmm1 ; xmm4=data7
578 packssdw xmm0,xmm5 ; xmm0=data1
579
580 movdqa XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_DCTELEM)], xmm4
581 movdqa XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_DCTELEM)], xmm0
582
583 movdqa xmm1,xmm3
584 movdqa xmm5,xmm3
585 punpcklwd xmm1,xmm7
586 punpckhwd xmm5,xmm7
587 movdqa xmm3,xmm1
588 movdqa xmm7,xmm5
589 pmaddwd xmm1,[rel PW_MF050_MF256] ; xmm1=tmp5L
590 pmaddwd xmm5,[rel PW_MF050_MF256] ; xmm5=tmp5H
591 pmaddwd xmm3,[rel PW_MF256_F050] ; xmm3=tmp6L
592 pmaddwd xmm7,[rel PW_MF256_F050] ; xmm7=tmp6H
593
594 paddd xmm1,xmm2 ; xmm1=data5L
595 paddd xmm5,xmm6 ; xmm5=data5H
596 paddd xmm3, XMMWORD [wk(0)] ; xmm3=data3L
597 paddd xmm7, XMMWORD [wk(1)] ; xmm7=data3H
598
599 paddd xmm1,[rel PD_DESCALE_P2]
600 paddd xmm5,[rel PD_DESCALE_P2]
601 psrad xmm1,DESCALE_P2
602 psrad xmm5,DESCALE_P2
603 paddd xmm3,[rel PD_DESCALE_P2]
604 paddd xmm7,[rel PD_DESCALE_P2]
605 psrad xmm3,DESCALE_P2
606 psrad xmm7,DESCALE_P2
607
608 packssdw xmm1,xmm5 ; xmm1=data5
609 packssdw xmm3,xmm7 ; xmm3=data3
610
611 movdqa XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)], xmm1
612 movdqa XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_DCTELEM)], xmm3
613
614 uncollect_args
615 mov rsp,rbp ; rsp <- aligned rbp
616 pop rsp ; rsp <- original rbp
617 pop rbp
618 ret
619
620 ; For some reason, the OS X linker does not honor the request to align the
621 ; segment unless we do this.
622 align 16

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