1; 2; jidctint.asm - accurate integer IDCT (64-bit SSE2) 3; 4; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB 5; Copyright (C) 2009, D. R. Commander. 6; 7; Based on the x86 SIMD extension for IJG JPEG library 8; Copyright (C) 1999-2006, MIYASAKA Masaru. 9; For conditions of distribution and use, see copyright notice in jsimdext.inc 10; 11; This file should be assembled with NASM (Netwide Assembler), 12; can *not* be assembled with Microsoft's MASM or any compatible 13; assembler (including Borland's Turbo Assembler). 14; NASM is available from http://nasm.sourceforge.net/ or 15; http://sourceforge.net/project/showfiles.php?group_id=6208 16; 17; This file contains a slow-but-accurate integer implementation of the 18; inverse DCT (Discrete Cosine Transform). The following code is based 19; directly on the IJG's original jidctint.c; see the jidctint.c for 20; more details. 21; 22; [TAB8] 23 24%include "jsimdext.inc" 25%include "jdct.inc" 26 27; -------------------------------------------------------------------------- 28 29%define CONST_BITS 13 30%define PASS1_BITS 2 31 32%define DESCALE_P1 (CONST_BITS-PASS1_BITS) 33%define DESCALE_P2 (CONST_BITS+PASS1_BITS+3) 34 35%if CONST_BITS == 13 36F_0_298 equ 2446 ; FIX(0.298631336) 37F_0_390 equ 3196 ; FIX(0.390180644) 38F_0_541 equ 4433 ; FIX(0.541196100) 39F_0_765 equ 6270 ; FIX(0.765366865) 40F_0_899 equ 7373 ; FIX(0.899976223) 41F_1_175 equ 9633 ; FIX(1.175875602) 42F_1_501 equ 12299 ; FIX(1.501321110) 43F_1_847 equ 15137 ; FIX(1.847759065) 44F_1_961 equ 16069 ; FIX(1.961570560) 45F_2_053 equ 16819 ; FIX(2.053119869) 46F_2_562 equ 20995 ; FIX(2.562915447) 47F_3_072 equ 25172 ; FIX(3.072711026) 48%else 49; NASM cannot do compile-time arithmetic on floating-point constants. 50%define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n)) 51F_0_298 equ DESCALE( 320652955,30-CONST_BITS) ; FIX(0.298631336) 52F_0_390 equ DESCALE( 418953276,30-CONST_BITS) ; FIX(0.390180644) 53F_0_541 equ DESCALE( 581104887,30-CONST_BITS) ; FIX(0.541196100) 54F_0_765 equ DESCALE( 821806413,30-CONST_BITS) ; FIX(0.765366865) 55F_0_899 equ DESCALE( 966342111,30-CONST_BITS) ; FIX(0.899976223) 56F_1_175 equ DESCALE(1262586813,30-CONST_BITS) ; FIX(1.175875602) 57F_1_501 equ DESCALE(1612031267,30-CONST_BITS) ; FIX(1.501321110) 58F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065) 59F_1_961 equ DESCALE(2106220350,30-CONST_BITS) ; FIX(1.961570560) 60F_2_053 equ DESCALE(2204520673,30-CONST_BITS) ; FIX(2.053119869) 61F_2_562 equ DESCALE(2751909506,30-CONST_BITS) ; FIX(2.562915447) 62F_3_072 equ DESCALE(3299298341,30-CONST_BITS) ; FIX(3.072711026) 63%endif 64 65; -------------------------------------------------------------------------- 66 SECTION SEG_CONST 67 68 alignz 16 69 global EXTN(jconst_idct_islow_sse2) 70 71EXTN(jconst_idct_islow_sse2): 72 73PW_F130_F054 times 4 dw (F_0_541+F_0_765), F_0_541 74PW_F054_MF130 times 4 dw F_0_541, (F_0_541-F_1_847) 75PW_MF078_F117 times 4 dw (F_1_175-F_1_961), F_1_175 76PW_F117_F078 times 4 dw F_1_175, (F_1_175-F_0_390) 77PW_MF060_MF089 times 4 dw (F_0_298-F_0_899),-F_0_899 78PW_MF089_F060 times 4 dw -F_0_899, (F_1_501-F_0_899) 79PW_MF050_MF256 times 4 dw (F_2_053-F_2_562),-F_2_562 80PW_MF256_F050 times 4 dw -F_2_562, (F_3_072-F_2_562) 81PD_DESCALE_P1 times 4 dd 1 << (DESCALE_P1-1) 82PD_DESCALE_P2 times 4 dd 1 << (DESCALE_P2-1) 83PB_CENTERJSAMP times 16 db CENTERJSAMPLE 84 85 alignz 16 86 87; -------------------------------------------------------------------------- 88 SECTION SEG_TEXT 89 BITS 64 90; 91; Perform dequantization and inverse DCT on one block of coefficients. 92; 93; GLOBAL(void) 94; jsimd_idct_islow_sse2 (void *dct_table, JCOEFPTR coef_block, 95; JSAMPARRAY output_buf, JDIMENSION output_col) 96; 97 98; r10 = jpeg_component_info *compptr 99; r11 = JCOEFPTR coef_block 100; r12 = JSAMPARRAY output_buf 101; r13 = JDIMENSION output_col 102 103%define original_rbp rbp+0 104%define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] 105%define WK_NUM 12 106 107 align 16 108 global EXTN(jsimd_idct_islow_sse2) 109 110EXTN(jsimd_idct_islow_sse2): 111 push rbp 112 mov rax,rsp ; rax = original rbp 113 sub rsp, byte 4 114 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits 115 mov [rsp],rax 116 mov rbp,rsp ; rbp = aligned rbp 117 lea rsp, [wk(0)] 118 collect_args 119 120 ; ---- Pass 1: process columns from input. 121 122 mov rdx, r10 ; quantptr 123 mov rsi, r11 ; inptr 124 125%ifndef NO_ZERO_COLUMN_TEST_ISLOW_SSE2 126 mov eax, DWORD [DWBLOCK(1,0,rsi,SIZEOF_JCOEF)] 127 or eax, DWORD [DWBLOCK(2,0,rsi,SIZEOF_JCOEF)] 128 jnz near .columnDCT 129 130 movdqa xmm0, XMMWORD [XMMBLOCK(1,0,rsi,SIZEOF_JCOEF)] 131 movdqa xmm1, XMMWORD [XMMBLOCK(2,0,rsi,SIZEOF_JCOEF)] 132 por xmm0, XMMWORD [XMMBLOCK(3,0,rsi,SIZEOF_JCOEF)] 133 por xmm1, XMMWORD [XMMBLOCK(4,0,rsi,SIZEOF_JCOEF)] 134 por xmm0, XMMWORD [XMMBLOCK(5,0,rsi,SIZEOF_JCOEF)] 135 por xmm1, XMMWORD [XMMBLOCK(6,0,rsi,SIZEOF_JCOEF)] 136 por xmm0, XMMWORD [XMMBLOCK(7,0,rsi,SIZEOF_JCOEF)] 137 por xmm1,xmm0 138 packsswb xmm1,xmm1 139 packsswb xmm1,xmm1 140 movd eax,xmm1 141 test rax,rax 142 jnz short .columnDCT 143 144 ; -- AC terms all zero 145 146 movdqa xmm5, XMMWORD [XMMBLOCK(0,0,rsi,SIZEOF_JCOEF)] 147 pmullw xmm5, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 148 149 psllw xmm5,PASS1_BITS 150 151 movdqa xmm4,xmm5 ; xmm5=in0=(00 01 02 03 04 05 06 07) 152 punpcklwd xmm5,xmm5 ; xmm5=(00 00 01 01 02 02 03 03) 153 punpckhwd xmm4,xmm4 ; xmm4=(04 04 05 05 06 06 07 07) 154 155 pshufd xmm7,xmm5,0x00 ; xmm7=col0=(00 00 00 00 00 00 00 00) 156 pshufd xmm6,xmm5,0x55 ; xmm6=col1=(01 01 01 01 01 01 01 01) 157 pshufd xmm1,xmm5,0xAA ; xmm1=col2=(02 02 02 02 02 02 02 02) 158 pshufd xmm5,xmm5,0xFF ; xmm5=col3=(03 03 03 03 03 03 03 03) 159 pshufd xmm0,xmm4,0x00 ; xmm0=col4=(04 04 04 04 04 04 04 04) 160 pshufd xmm3,xmm4,0x55 ; xmm3=col5=(05 05 05 05 05 05 05 05) 161 pshufd xmm2,xmm4,0xAA ; xmm2=col6=(06 06 06 06 06 06 06 06) 162 pshufd xmm4,xmm4,0xFF ; xmm4=col7=(07 07 07 07 07 07 07 07) 163 164 movdqa XMMWORD [wk(8)], xmm6 ; wk(8)=col1 165 movdqa XMMWORD [wk(9)], xmm5 ; wk(9)=col3 166 movdqa XMMWORD [wk(10)], xmm3 ; wk(10)=col5 167 movdqa XMMWORD [wk(11)], xmm4 ; wk(11)=col7 168 jmp near .column_end 169%endif 170.columnDCT: 171 172 ; -- Even part 173 174 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,rsi,SIZEOF_JCOEF)] 175 movdqa xmm1, XMMWORD [XMMBLOCK(2,0,rsi,SIZEOF_JCOEF)] 176 pmullw xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 177 pmullw xmm1, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 178 movdqa xmm2, XMMWORD [XMMBLOCK(4,0,rsi,SIZEOF_JCOEF)] 179 movdqa xmm3, XMMWORD [XMMBLOCK(6,0,rsi,SIZEOF_JCOEF)] 180 pmullw xmm2, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 181 pmullw xmm3, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 182 183 ; (Original) 184 ; z1 = (z2 + z3) * 0.541196100; 185 ; tmp2 = z1 + z3 * -1.847759065; 186 ; tmp3 = z1 + z2 * 0.765366865; 187 ; 188 ; (This implementation) 189 ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065); 190 ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100; 191 192 movdqa xmm4,xmm1 ; xmm1=in2=z2 193 movdqa xmm5,xmm1 194 punpcklwd xmm4,xmm3 ; xmm3=in6=z3 195 punpckhwd xmm5,xmm3 196 movdqa xmm1,xmm4 197 movdqa xmm3,xmm5 198 pmaddwd xmm4,[rel PW_F130_F054] ; xmm4=tmp3L 199 pmaddwd xmm5,[rel PW_F130_F054] ; xmm5=tmp3H 200 pmaddwd xmm1,[rel PW_F054_MF130] ; xmm1=tmp2L 201 pmaddwd xmm3,[rel PW_F054_MF130] ; xmm3=tmp2H 202 203 movdqa xmm6,xmm0 204 paddw xmm0,xmm2 ; xmm0=in0+in4 205 psubw xmm6,xmm2 ; xmm6=in0-in4 206 207 pxor xmm7,xmm7 208 pxor xmm2,xmm2 209 punpcklwd xmm7,xmm0 ; xmm7=tmp0L 210 punpckhwd xmm2,xmm0 ; xmm2=tmp0H 211 psrad xmm7,(16-CONST_BITS) ; psrad xmm7,16 & pslld xmm7,CONST_BITS 212 psrad xmm2,(16-CONST_BITS) ; psrad xmm2,16 & pslld xmm2,CONST_BITS 213 214 movdqa xmm0,xmm7 215 paddd xmm7,xmm4 ; xmm7=tmp10L 216 psubd xmm0,xmm4 ; xmm0=tmp13L 217 movdqa xmm4,xmm2 218 paddd xmm2,xmm5 ; xmm2=tmp10H 219 psubd xmm4,xmm5 ; xmm4=tmp13H 220 221 movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=tmp10L 222 movdqa XMMWORD [wk(1)], xmm2 ; wk(1)=tmp10H 223 movdqa XMMWORD [wk(2)], xmm0 ; wk(2)=tmp13L 224 movdqa XMMWORD [wk(3)], xmm4 ; wk(3)=tmp13H 225 226 pxor xmm5,xmm5 227 pxor xmm7,xmm7 228 punpcklwd xmm5,xmm6 ; xmm5=tmp1L 229 punpckhwd xmm7,xmm6 ; xmm7=tmp1H 230 psrad xmm5,(16-CONST_BITS) ; psrad xmm5,16 & pslld xmm5,CONST_BITS 231 psrad xmm7,(16-CONST_BITS) ; psrad xmm7,16 & pslld xmm7,CONST_BITS 232 233 movdqa xmm2,xmm5 234 paddd xmm5,xmm1 ; xmm5=tmp11L 235 psubd xmm2,xmm1 ; xmm2=tmp12L 236 movdqa xmm0,xmm7 237 paddd xmm7,xmm3 ; xmm7=tmp11H 238 psubd xmm0,xmm3 ; xmm0=tmp12H 239 240 movdqa XMMWORD [wk(4)], xmm5 ; wk(4)=tmp11L 241 movdqa XMMWORD [wk(5)], xmm7 ; wk(5)=tmp11H 242 movdqa XMMWORD [wk(6)], xmm2 ; wk(6)=tmp12L 243 movdqa XMMWORD [wk(7)], xmm0 ; wk(7)=tmp12H 244 245 ; -- Odd part 246 247 movdqa xmm4, XMMWORD [XMMBLOCK(1,0,rsi,SIZEOF_JCOEF)] 248 movdqa xmm6, XMMWORD [XMMBLOCK(3,0,rsi,SIZEOF_JCOEF)] 249 pmullw xmm4, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 250 pmullw xmm6, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 251 movdqa xmm1, XMMWORD [XMMBLOCK(5,0,rsi,SIZEOF_JCOEF)] 252 movdqa xmm3, XMMWORD [XMMBLOCK(7,0,rsi,SIZEOF_JCOEF)] 253 pmullw xmm1, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 254 pmullw xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_ISLOW_MULT_TYPE)] 255 256 movdqa xmm5,xmm6 257 movdqa xmm7,xmm4 258 paddw xmm5,xmm3 ; xmm5=z3 259 paddw xmm7,xmm1 ; xmm7=z4 260 261 ; (Original) 262 ; z5 = (z3 + z4) * 1.175875602; 263 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; 264 ; z3 += z5; z4 += z5; 265 ; 266 ; (This implementation) 267 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; 268 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); 269 270 movdqa xmm2,xmm5 271 movdqa xmm0,xmm5 272 punpcklwd xmm2,xmm7 273 punpckhwd xmm0,xmm7 274 movdqa xmm5,xmm2 275 movdqa xmm7,xmm0 276 pmaddwd xmm2,[rel PW_MF078_F117] ; xmm2=z3L 277 pmaddwd xmm0,[rel PW_MF078_F117] ; xmm0=z3H 278 pmaddwd xmm5,[rel PW_F117_F078] ; xmm5=z4L 279 pmaddwd xmm7,[rel PW_F117_F078] ; xmm7=z4H 280 281 movdqa XMMWORD [wk(10)], xmm2 ; wk(10)=z3L 282 movdqa XMMWORD [wk(11)], xmm0 ; wk(11)=z3H 283 284 ; (Original) 285 ; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2; 286 ; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869; 287 ; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110; 288 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; 289 ; tmp0 += z1 + z3; tmp1 += z2 + z4; 290 ; tmp2 += z2 + z3; tmp3 += z1 + z4; 291 ; 292 ; (This implementation) 293 ; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223; 294 ; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447; 295 ; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447); 296 ; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223); 297 ; tmp0 += z3; tmp1 += z4; 298 ; tmp2 += z3; tmp3 += z4; 299 300 movdqa xmm2,xmm3 301 movdqa xmm0,xmm3 302 punpcklwd xmm2,xmm4 303 punpckhwd xmm0,xmm4 304 movdqa xmm3,xmm2 305 movdqa xmm4,xmm0 306 pmaddwd xmm2,[rel PW_MF060_MF089] ; xmm2=tmp0L 307 pmaddwd xmm0,[rel PW_MF060_MF089] ; xmm0=tmp0H 308 pmaddwd xmm3,[rel PW_MF089_F060] ; xmm3=tmp3L 309 pmaddwd xmm4,[rel PW_MF089_F060] ; xmm4=tmp3H 310 311 paddd xmm2, XMMWORD [wk(10)] ; xmm2=tmp0L 312 paddd xmm0, XMMWORD [wk(11)] ; xmm0=tmp0H 313 paddd xmm3,xmm5 ; xmm3=tmp3L 314 paddd xmm4,xmm7 ; xmm4=tmp3H 315 316 movdqa XMMWORD [wk(8)], xmm2 ; wk(8)=tmp0L 317 movdqa XMMWORD [wk(9)], xmm0 ; wk(9)=tmp0H 318 319 movdqa xmm2,xmm1 320 movdqa xmm0,xmm1 321 punpcklwd xmm2,xmm6 322 punpckhwd xmm0,xmm6 323 movdqa xmm1,xmm2 324 movdqa xmm6,xmm0 325 pmaddwd xmm2,[rel PW_MF050_MF256] ; xmm2=tmp1L 326 pmaddwd xmm0,[rel PW_MF050_MF256] ; xmm0=tmp1H 327 pmaddwd xmm1,[rel PW_MF256_F050] ; xmm1=tmp2L 328 pmaddwd xmm6,[rel PW_MF256_F050] ; xmm6=tmp2H 329 330 paddd xmm2,xmm5 ; xmm2=tmp1L 331 paddd xmm0,xmm7 ; xmm0=tmp1H 332 paddd xmm1, XMMWORD [wk(10)] ; xmm1=tmp2L 333 paddd xmm6, XMMWORD [wk(11)] ; xmm6=tmp2H 334 335 movdqa XMMWORD [wk(10)], xmm2 ; wk(10)=tmp1L 336 movdqa XMMWORD [wk(11)], xmm0 ; wk(11)=tmp1H 337 338 ; -- Final output stage 339 340 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=tmp10L 341 movdqa xmm7, XMMWORD [wk(1)] ; xmm7=tmp10H 342 343 movdqa xmm2,xmm5 344 movdqa xmm0,xmm7 345 paddd xmm5,xmm3 ; xmm5=data0L 346 paddd xmm7,xmm4 ; xmm7=data0H 347 psubd xmm2,xmm3 ; xmm2=data7L 348 psubd xmm0,xmm4 ; xmm0=data7H 349 350 movdqa xmm3,[rel PD_DESCALE_P1] ; xmm3=[rel PD_DESCALE_P1] 351 352 paddd xmm5,xmm3 353 paddd xmm7,xmm3 354 psrad xmm5,DESCALE_P1 355 psrad xmm7,DESCALE_P1 356 paddd xmm2,xmm3 357 paddd xmm0,xmm3 358 psrad xmm2,DESCALE_P1 359 psrad xmm0,DESCALE_P1 360 361 packssdw xmm5,xmm7 ; xmm5=data0=(00 01 02 03 04 05 06 07) 362 packssdw xmm2,xmm0 ; xmm2=data7=(70 71 72 73 74 75 76 77) 363 364 movdqa xmm4, XMMWORD [wk(4)] ; xmm4=tmp11L 365 movdqa xmm3, XMMWORD [wk(5)] ; xmm3=tmp11H 366 367 movdqa xmm7,xmm4 368 movdqa xmm0,xmm3 369 paddd xmm4,xmm1 ; xmm4=data1L 370 paddd xmm3,xmm6 ; xmm3=data1H 371 psubd xmm7,xmm1 ; xmm7=data6L 372 psubd xmm0,xmm6 ; xmm0=data6H 373 374 movdqa xmm1,[rel PD_DESCALE_P1] ; xmm1=[rel PD_DESCALE_P1] 375 376 paddd xmm4,xmm1 377 paddd xmm3,xmm1 378 psrad xmm4,DESCALE_P1 379 psrad xmm3,DESCALE_P1 380 paddd xmm7,xmm1 381 paddd xmm0,xmm1 382 psrad xmm7,DESCALE_P1 383 psrad xmm0,DESCALE_P1 384 385 packssdw xmm4,xmm3 ; xmm4=data1=(10 11 12 13 14 15 16 17) 386 packssdw xmm7,xmm0 ; xmm7=data6=(60 61 62 63 64 65 66 67) 387 388 movdqa xmm6,xmm5 ; transpose coefficients(phase 1) 389 punpcklwd xmm5,xmm4 ; xmm5=(00 10 01 11 02 12 03 13) 390 punpckhwd xmm6,xmm4 ; xmm6=(04 14 05 15 06 16 07 17) 391 movdqa xmm1,xmm7 ; transpose coefficients(phase 1) 392 punpcklwd xmm7,xmm2 ; xmm7=(60 70 61 71 62 72 63 73) 393 punpckhwd xmm1,xmm2 ; xmm1=(64 74 65 75 66 76 67 77) 394 395 movdqa xmm3, XMMWORD [wk(6)] ; xmm3=tmp12L 396 movdqa xmm0, XMMWORD [wk(7)] ; xmm0=tmp12H 397 movdqa xmm4, XMMWORD [wk(10)] ; xmm4=tmp1L 398 movdqa xmm2, XMMWORD [wk(11)] ; xmm2=tmp1H 399 400 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=(00 10 01 11 02 12 03 13) 401 movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=(04 14 05 15 06 16 07 17) 402 movdqa XMMWORD [wk(4)], xmm7 ; wk(4)=(60 70 61 71 62 72 63 73) 403 movdqa XMMWORD [wk(5)], xmm1 ; wk(5)=(64 74 65 75 66 76 67 77) 404 405 movdqa xmm5,xmm3 406 movdqa xmm6,xmm0 407 paddd xmm3,xmm4 ; xmm3=data2L 408 paddd xmm0,xmm2 ; xmm0=data2H 409 psubd xmm5,xmm4 ; xmm5=data5L 410 psubd xmm6,xmm2 ; xmm6=data5H 411 412 movdqa xmm7,[rel PD_DESCALE_P1] ; xmm7=[rel PD_DESCALE_P1] 413 414 paddd xmm3,xmm7 415 paddd xmm0,xmm7 416 psrad xmm3,DESCALE_P1 417 psrad xmm0,DESCALE_P1 418 paddd xmm5,xmm7 419 paddd xmm6,xmm7 420 psrad xmm5,DESCALE_P1 421 psrad xmm6,DESCALE_P1 422 423 packssdw xmm3,xmm0 ; xmm3=data2=(20 21 22 23 24 25 26 27) 424 packssdw xmm5,xmm6 ; xmm5=data5=(50 51 52 53 54 55 56 57) 425 426 movdqa xmm1, XMMWORD [wk(2)] ; xmm1=tmp13L 427 movdqa xmm4, XMMWORD [wk(3)] ; xmm4=tmp13H 428 movdqa xmm2, XMMWORD [wk(8)] ; xmm2=tmp0L 429 movdqa xmm7, XMMWORD [wk(9)] ; xmm7=tmp0H 430 431 movdqa xmm0,xmm1 432 movdqa xmm6,xmm4 433 paddd xmm1,xmm2 ; xmm1=data3L 434 paddd xmm4,xmm7 ; xmm4=data3H 435 psubd xmm0,xmm2 ; xmm0=data4L 436 psubd xmm6,xmm7 ; xmm6=data4H 437 438 movdqa xmm2,[rel PD_DESCALE_P1] ; xmm2=[rel PD_DESCALE_P1] 439 440 paddd xmm1,xmm2 441 paddd xmm4,xmm2 442 psrad xmm1,DESCALE_P1 443 psrad xmm4,DESCALE_P1 444 paddd xmm0,xmm2 445 paddd xmm6,xmm2 446 psrad xmm0,DESCALE_P1 447 psrad xmm6,DESCALE_P1 448 449 packssdw xmm1,xmm4 ; xmm1=data3=(30 31 32 33 34 35 36 37) 450 packssdw xmm0,xmm6 ; xmm0=data4=(40 41 42 43 44 45 46 47) 451 452 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=(00 10 01 11 02 12 03 13) 453 movdqa xmm2, XMMWORD [wk(1)] ; xmm2=(04 14 05 15 06 16 07 17) 454 455 movdqa xmm4,xmm3 ; transpose coefficients(phase 1) 456 punpcklwd xmm3,xmm1 ; xmm3=(20 30 21 31 22 32 23 33) 457 punpckhwd xmm4,xmm1 ; xmm4=(24 34 25 35 26 36 27 37) 458 movdqa xmm6,xmm0 ; transpose coefficients(phase 1) 459 punpcklwd xmm0,xmm5 ; xmm0=(40 50 41 51 42 52 43 53) 460 punpckhwd xmm6,xmm5 ; xmm6=(44 54 45 55 46 56 47 57) 461 462 movdqa xmm1,xmm7 ; transpose coefficients(phase 2) 463 punpckldq xmm7,xmm3 ; xmm7=(00 10 20 30 01 11 21 31) 464 punpckhdq xmm1,xmm3 ; xmm1=(02 12 22 32 03 13 23 33) 465 movdqa xmm5,xmm2 ; transpose coefficients(phase 2) 466 punpckldq xmm2,xmm4 ; xmm2=(04 14 24 34 05 15 25 35) 467 punpckhdq xmm5,xmm4 ; xmm5=(06 16 26 36 07 17 27 37) 468 469 movdqa xmm3, XMMWORD [wk(4)] ; xmm3=(60 70 61 71 62 72 63 73) 470 movdqa xmm4, XMMWORD [wk(5)] ; xmm4=(64 74 65 75 66 76 67 77) 471 472 movdqa XMMWORD [wk(6)], xmm2 ; wk(6)=(04 14 24 34 05 15 25 35) 473 movdqa XMMWORD [wk(7)], xmm5 ; wk(7)=(06 16 26 36 07 17 27 37) 474 475 movdqa xmm2,xmm0 ; transpose coefficients(phase 2) 476 punpckldq xmm0,xmm3 ; xmm0=(40 50 60 70 41 51 61 71) 477 punpckhdq xmm2,xmm3 ; xmm2=(42 52 62 72 43 53 63 73) 478 movdqa xmm5,xmm6 ; transpose coefficients(phase 2) 479 punpckldq xmm6,xmm4 ; xmm6=(44 54 64 74 45 55 65 75) 480 punpckhdq xmm5,xmm4 ; xmm5=(46 56 66 76 47 57 67 77) 481 482 movdqa xmm3,xmm7 ; transpose coefficients(phase 3) 483 punpcklqdq xmm7,xmm0 ; xmm7=col0=(00 10 20 30 40 50 60 70) 484 punpckhqdq xmm3,xmm0 ; xmm3=col1=(01 11 21 31 41 51 61 71) 485 movdqa xmm4,xmm1 ; transpose coefficients(phase 3) 486 punpcklqdq xmm1,xmm2 ; xmm1=col2=(02 12 22 32 42 52 62 72) 487 punpckhqdq xmm4,xmm2 ; xmm4=col3=(03 13 23 33 43 53 63 73) 488 489 movdqa xmm0, XMMWORD [wk(6)] ; xmm0=(04 14 24 34 05 15 25 35) 490 movdqa xmm2, XMMWORD [wk(7)] ; xmm2=(06 16 26 36 07 17 27 37) 491 492 movdqa XMMWORD [wk(8)], xmm3 ; wk(8)=col1 493 movdqa XMMWORD [wk(9)], xmm4 ; wk(9)=col3 494 495 movdqa xmm3,xmm0 ; transpose coefficients(phase 3) 496 punpcklqdq xmm0,xmm6 ; xmm0=col4=(04 14 24 34 44 54 64 74) 497 punpckhqdq xmm3,xmm6 ; xmm3=col5=(05 15 25 35 45 55 65 75) 498 movdqa xmm4,xmm2 ; transpose coefficients(phase 3) 499 punpcklqdq xmm2,xmm5 ; xmm2=col6=(06 16 26 36 46 56 66 76) 500 punpckhqdq xmm4,xmm5 ; xmm4=col7=(07 17 27 37 47 57 67 77) 501 502 movdqa XMMWORD [wk(10)], xmm3 ; wk(10)=col5 503 movdqa XMMWORD [wk(11)], xmm4 ; wk(11)=col7 504.column_end: 505 506 ; -- Prefetch the next coefficient block 507 508 prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 0*32] 509 prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 1*32] 510 prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 2*32] 511 prefetchnta [rsi + DCTSIZE2*SIZEOF_JCOEF + 3*32] 512 513 ; ---- Pass 2: process rows from work array, store into output array. 514 515 mov rax, [original_rbp] 516 mov rdi, r12 ; (JSAMPROW *) 517 mov eax, r13d 518 519 ; -- Even part 520 521 ; xmm7=col0, xmm1=col2, xmm0=col4, xmm2=col6 522 523 ; (Original) 524 ; z1 = (z2 + z3) * 0.541196100; 525 ; tmp2 = z1 + z3 * -1.847759065; 526 ; tmp3 = z1 + z2 * 0.765366865; 527 ; 528 ; (This implementation) 529 ; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065); 530 ; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100; 531 532 movdqa xmm6,xmm1 ; xmm1=in2=z2 533 movdqa xmm5,xmm1 534 punpcklwd xmm6,xmm2 ; xmm2=in6=z3 535 punpckhwd xmm5,xmm2 536 movdqa xmm1,xmm6 537 movdqa xmm2,xmm5 538 pmaddwd xmm6,[rel PW_F130_F054] ; xmm6=tmp3L 539 pmaddwd xmm5,[rel PW_F130_F054] ; xmm5=tmp3H 540 pmaddwd xmm1,[rel PW_F054_MF130] ; xmm1=tmp2L 541 pmaddwd xmm2,[rel PW_F054_MF130] ; xmm2=tmp2H 542 543 movdqa xmm3,xmm7 544 paddw xmm7,xmm0 ; xmm7=in0+in4 545 psubw xmm3,xmm0 ; xmm3=in0-in4 546 547 pxor xmm4,xmm4 548 pxor xmm0,xmm0 549 punpcklwd xmm4,xmm7 ; xmm4=tmp0L 550 punpckhwd xmm0,xmm7 ; xmm0=tmp0H 551 psrad xmm4,(16-CONST_BITS) ; psrad xmm4,16 & pslld xmm4,CONST_BITS 552 psrad xmm0,(16-CONST_BITS) ; psrad xmm0,16 & pslld xmm0,CONST_BITS 553 554 movdqa xmm7,xmm4 555 paddd xmm4,xmm6 ; xmm4=tmp10L 556 psubd xmm7,xmm6 ; xmm7=tmp13L 557 movdqa xmm6,xmm0 558 paddd xmm0,xmm5 ; xmm0=tmp10H 559 psubd xmm6,xmm5 ; xmm6=tmp13H 560 561 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=tmp10L 562 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp10H 563 movdqa XMMWORD [wk(2)], xmm7 ; wk(2)=tmp13L 564 movdqa XMMWORD [wk(3)], xmm6 ; wk(3)=tmp13H 565 566 pxor xmm5,xmm5 567 pxor xmm4,xmm4 568 punpcklwd xmm5,xmm3 ; xmm5=tmp1L 569 punpckhwd xmm4,xmm3 ; xmm4=tmp1H 570 psrad xmm5,(16-CONST_BITS) ; psrad xmm5,16 & pslld xmm5,CONST_BITS 571 psrad xmm4,(16-CONST_BITS) ; psrad xmm4,16 & pslld xmm4,CONST_BITS 572 573 movdqa xmm0,xmm5 574 paddd xmm5,xmm1 ; xmm5=tmp11L 575 psubd xmm0,xmm1 ; xmm0=tmp12L 576 movdqa xmm7,xmm4 577 paddd xmm4,xmm2 ; xmm4=tmp11H 578 psubd xmm7,xmm2 ; xmm7=tmp12H 579 580 movdqa XMMWORD [wk(4)], xmm5 ; wk(4)=tmp11L 581 movdqa XMMWORD [wk(5)], xmm4 ; wk(5)=tmp11H 582 movdqa XMMWORD [wk(6)], xmm0 ; wk(6)=tmp12L 583 movdqa XMMWORD [wk(7)], xmm7 ; wk(7)=tmp12H 584 585 ; -- Odd part 586 587 movdqa xmm6, XMMWORD [wk(9)] ; xmm6=col3 588 movdqa xmm3, XMMWORD [wk(8)] ; xmm3=col1 589 movdqa xmm1, XMMWORD [wk(11)] ; xmm1=col7 590 movdqa xmm2, XMMWORD [wk(10)] ; xmm2=col5 591 592 movdqa xmm5,xmm6 593 movdqa xmm4,xmm3 594 paddw xmm5,xmm1 ; xmm5=z3 595 paddw xmm4,xmm2 ; xmm4=z4 596 597 ; (Original) 598 ; z5 = (z3 + z4) * 1.175875602; 599 ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; 600 ; z3 += z5; z4 += z5; 601 ; 602 ; (This implementation) 603 ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; 604 ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); 605 606 movdqa xmm0,xmm5 607 movdqa xmm7,xmm5 608 punpcklwd xmm0,xmm4 609 punpckhwd xmm7,xmm4 610 movdqa xmm5,xmm0 611 movdqa xmm4,xmm7 612 pmaddwd xmm0,[rel PW_MF078_F117] ; xmm0=z3L 613 pmaddwd xmm7,[rel PW_MF078_F117] ; xmm7=z3H 614 pmaddwd xmm5,[rel PW_F117_F078] ; xmm5=z4L 615 pmaddwd xmm4,[rel PW_F117_F078] ; xmm4=z4H 616 617 movdqa XMMWORD [wk(10)], xmm0 ; wk(10)=z3L 618 movdqa XMMWORD [wk(11)], xmm7 ; wk(11)=z3H 619 620 ; (Original) 621 ; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2; 622 ; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869; 623 ; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110; 624 ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; 625 ; tmp0 += z1 + z3; tmp1 += z2 + z4; 626 ; tmp2 += z2 + z3; tmp3 += z1 + z4; 627 ; 628 ; (This implementation) 629 ; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223; 630 ; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447; 631 ; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447); 632 ; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223); 633 ; tmp0 += z3; tmp1 += z4; 634 ; tmp2 += z3; tmp3 += z4; 635 636 movdqa xmm0,xmm1 637 movdqa xmm7,xmm1 638 punpcklwd xmm0,xmm3 639 punpckhwd xmm7,xmm3 640 movdqa xmm1,xmm0 641 movdqa xmm3,xmm7 642 pmaddwd xmm0,[rel PW_MF060_MF089] ; xmm0=tmp0L 643 pmaddwd xmm7,[rel PW_MF060_MF089] ; xmm7=tmp0H 644 pmaddwd xmm1,[rel PW_MF089_F060] ; xmm1=tmp3L 645 pmaddwd xmm3,[rel PW_MF089_F060] ; xmm3=tmp3H 646 647 paddd xmm0, XMMWORD [wk(10)] ; xmm0=tmp0L 648 paddd xmm7, XMMWORD [wk(11)] ; xmm7=tmp0H 649 paddd xmm1,xmm5 ; xmm1=tmp3L 650 paddd xmm3,xmm4 ; xmm3=tmp3H 651 652 movdqa XMMWORD [wk(8)], xmm0 ; wk(8)=tmp0L 653 movdqa XMMWORD [wk(9)], xmm7 ; wk(9)=tmp0H 654 655 movdqa xmm0,xmm2 656 movdqa xmm7,xmm2 657 punpcklwd xmm0,xmm6 658 punpckhwd xmm7,xmm6 659 movdqa xmm2,xmm0 660 movdqa xmm6,xmm7 661 pmaddwd xmm0,[rel PW_MF050_MF256] ; xmm0=tmp1L 662 pmaddwd xmm7,[rel PW_MF050_MF256] ; xmm7=tmp1H 663 pmaddwd xmm2,[rel PW_MF256_F050] ; xmm2=tmp2L 664 pmaddwd xmm6,[rel PW_MF256_F050] ; xmm6=tmp2H 665 666 paddd xmm0,xmm5 ; xmm0=tmp1L 667 paddd xmm7,xmm4 ; xmm7=tmp1H 668 paddd xmm2, XMMWORD [wk(10)] ; xmm2=tmp2L 669 paddd xmm6, XMMWORD [wk(11)] ; xmm6=tmp2H 670 671 movdqa XMMWORD [wk(10)], xmm0 ; wk(10)=tmp1L 672 movdqa XMMWORD [wk(11)], xmm7 ; wk(11)=tmp1H 673 674 ; -- Final output stage 675 676 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=tmp10L 677 movdqa xmm4, XMMWORD [wk(1)] ; xmm4=tmp10H 678 679 movdqa xmm0,xmm5 680 movdqa xmm7,xmm4 681 paddd xmm5,xmm1 ; xmm5=data0L 682 paddd xmm4,xmm3 ; xmm4=data0H 683 psubd xmm0,xmm1 ; xmm0=data7L 684 psubd xmm7,xmm3 ; xmm7=data7H 685 686 movdqa xmm1,[rel PD_DESCALE_P2] ; xmm1=[rel PD_DESCALE_P2] 687 688 paddd xmm5,xmm1 689 paddd xmm4,xmm1 690 psrad xmm5,DESCALE_P2 691 psrad xmm4,DESCALE_P2 692 paddd xmm0,xmm1 693 paddd xmm7,xmm1 694 psrad xmm0,DESCALE_P2 695 psrad xmm7,DESCALE_P2 696 697 packssdw xmm5,xmm4 ; xmm5=data0=(00 10 20 30 40 50 60 70) 698 packssdw xmm0,xmm7 ; xmm0=data7=(07 17 27 37 47 57 67 77) 699 700 movdqa xmm3, XMMWORD [wk(4)] ; xmm3=tmp11L 701 movdqa xmm1, XMMWORD [wk(5)] ; xmm1=tmp11H 702 703 movdqa xmm4,xmm3 704 movdqa xmm7,xmm1 705 paddd xmm3,xmm2 ; xmm3=data1L 706 paddd xmm1,xmm6 ; xmm1=data1H 707 psubd xmm4,xmm2 ; xmm4=data6L 708 psubd xmm7,xmm6 ; xmm7=data6H 709 710 movdqa xmm2,[rel PD_DESCALE_P2] ; xmm2=[rel PD_DESCALE_P2] 711 712 paddd xmm3,xmm2 713 paddd xmm1,xmm2 714 psrad xmm3,DESCALE_P2 715 psrad xmm1,DESCALE_P2 716 paddd xmm4,xmm2 717 paddd xmm7,xmm2 718 psrad xmm4,DESCALE_P2 719 psrad xmm7,DESCALE_P2 720 721 packssdw xmm3,xmm1 ; xmm3=data1=(01 11 21 31 41 51 61 71) 722 packssdw xmm4,xmm7 ; xmm4=data6=(06 16 26 36 46 56 66 76) 723 724 packsswb xmm5,xmm4 ; xmm5=(00 10 20 30 40 50 60 70 06 16 26 36 46 56 66 76) 725 packsswb xmm3,xmm0 ; xmm3=(01 11 21 31 41 51 61 71 07 17 27 37 47 57 67 77) 726 727 movdqa xmm6, XMMWORD [wk(6)] ; xmm6=tmp12L 728 movdqa xmm2, XMMWORD [wk(7)] ; xmm2=tmp12H 729 movdqa xmm1, XMMWORD [wk(10)] ; xmm1=tmp1L 730 movdqa xmm7, XMMWORD [wk(11)] ; xmm7=tmp1H 731 732 movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=(00 10 20 30 40 50 60 70 06 16 26 36 46 56 66 76) 733 movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=(01 11 21 31 41 51 61 71 07 17 27 37 47 57 67 77) 734 735 movdqa xmm4,xmm6 736 movdqa xmm0,xmm2 737 paddd xmm6,xmm1 ; xmm6=data2L 738 paddd xmm2,xmm7 ; xmm2=data2H 739 psubd xmm4,xmm1 ; xmm4=data5L 740 psubd xmm0,xmm7 ; xmm0=data5H 741 742 movdqa xmm5,[rel PD_DESCALE_P2] ; xmm5=[rel PD_DESCALE_P2] 743 744 paddd xmm6,xmm5 745 paddd xmm2,xmm5 746 psrad xmm6,DESCALE_P2 747 psrad xmm2,DESCALE_P2 748 paddd xmm4,xmm5 749 paddd xmm0,xmm5 750 psrad xmm4,DESCALE_P2 751 psrad xmm0,DESCALE_P2 752 753 packssdw xmm6,xmm2 ; xmm6=data2=(02 12 22 32 42 52 62 72) 754 packssdw xmm4,xmm0 ; xmm4=data5=(05 15 25 35 45 55 65 75) 755 756 movdqa xmm3, XMMWORD [wk(2)] ; xmm3=tmp13L 757 movdqa xmm1, XMMWORD [wk(3)] ; xmm1=tmp13H 758 movdqa xmm7, XMMWORD [wk(8)] ; xmm7=tmp0L 759 movdqa xmm5, XMMWORD [wk(9)] ; xmm5=tmp0H 760 761 movdqa xmm2,xmm3 762 movdqa xmm0,xmm1 763 paddd xmm3,xmm7 ; xmm3=data3L 764 paddd xmm1,xmm5 ; xmm1=data3H 765 psubd xmm2,xmm7 ; xmm2=data4L 766 psubd xmm0,xmm5 ; xmm0=data4H 767 768 movdqa xmm7,[rel PD_DESCALE_P2] ; xmm7=[rel PD_DESCALE_P2] 769 770 paddd xmm3,xmm7 771 paddd xmm1,xmm7 772 psrad xmm3,DESCALE_P2 773 psrad xmm1,DESCALE_P2 774 paddd xmm2,xmm7 775 paddd xmm0,xmm7 776 psrad xmm2,DESCALE_P2 777 psrad xmm0,DESCALE_P2 778 779 movdqa xmm5,[rel PB_CENTERJSAMP] ; xmm5=[rel PB_CENTERJSAMP] 780 781 packssdw xmm3,xmm1 ; xmm3=data3=(03 13 23 33 43 53 63 73) 782 packssdw xmm2,xmm0 ; xmm2=data4=(04 14 24 34 44 54 64 74) 783 784 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=(00 10 20 30 40 50 60 70 06 16 26 36 46 56 66 76) 785 movdqa xmm1, XMMWORD [wk(1)] ; xmm1=(01 11 21 31 41 51 61 71 07 17 27 37 47 57 67 77) 786 787 packsswb xmm6,xmm2 ; xmm6=(02 12 22 32 42 52 62 72 04 14 24 34 44 54 64 74) 788 packsswb xmm3,xmm4 ; xmm3=(03 13 23 33 43 53 63 73 05 15 25 35 45 55 65 75) 789 790 paddb xmm7,xmm5 791 paddb xmm1,xmm5 792 paddb xmm6,xmm5 793 paddb xmm3,xmm5 794 795 movdqa xmm0,xmm7 ; transpose coefficients(phase 1) 796 punpcklbw xmm7,xmm1 ; xmm7=(00 01 10 11 20 21 30 31 40 41 50 51 60 61 70 71) 797 punpckhbw xmm0,xmm1 ; xmm0=(06 07 16 17 26 27 36 37 46 47 56 57 66 67 76 77) 798 movdqa xmm2,xmm6 ; transpose coefficients(phase 1) 799 punpcklbw xmm6,xmm3 ; xmm6=(02 03 12 13 22 23 32 33 42 43 52 53 62 63 72 73) 800 punpckhbw xmm2,xmm3 ; xmm2=(04 05 14 15 24 25 34 35 44 45 54 55 64 65 74 75) 801 802 movdqa xmm4,xmm7 ; transpose coefficients(phase 2) 803 punpcklwd xmm7,xmm6 ; xmm7=(00 01 02 03 10 11 12 13 20 21 22 23 30 31 32 33) 804 punpckhwd xmm4,xmm6 ; xmm4=(40 41 42 43 50 51 52 53 60 61 62 63 70 71 72 73) 805 movdqa xmm5,xmm2 ; transpose coefficients(phase 2) 806 punpcklwd xmm2,xmm0 ; xmm2=(04 05 06 07 14 15 16 17 24 25 26 27 34 35 36 37) 807 punpckhwd xmm5,xmm0 ; xmm5=(44 45 46 47 54 55 56 57 64 65 66 67 74 75 76 77) 808 809 movdqa xmm1,xmm7 ; transpose coefficients(phase 3) 810 punpckldq xmm7,xmm2 ; xmm7=(00 01 02 03 04 05 06 07 10 11 12 13 14 15 16 17) 811 punpckhdq xmm1,xmm2 ; xmm1=(20 21 22 23 24 25 26 27 30 31 32 33 34 35 36 37) 812 movdqa xmm3,xmm4 ; transpose coefficients(phase 3) 813 punpckldq xmm4,xmm5 ; xmm4=(40 41 42 43 44 45 46 47 50 51 52 53 54 55 56 57) 814 punpckhdq xmm3,xmm5 ; xmm3=(60 61 62 63 64 65 66 67 70 71 72 73 74 75 76 77) 815 816 pshufd xmm6,xmm7,0x4E ; xmm6=(10 11 12 13 14 15 16 17 00 01 02 03 04 05 06 07) 817 pshufd xmm0,xmm1,0x4E ; xmm0=(30 31 32 33 34 35 36 37 20 21 22 23 24 25 26 27) 818 pshufd xmm2,xmm4,0x4E ; xmm2=(50 51 52 53 54 55 56 57 40 41 42 43 44 45 46 47) 819 pshufd xmm5,xmm3,0x4E ; xmm5=(70 71 72 73 74 75 76 77 60 61 62 63 64 65 66 67) 820 821 mov rdx, JSAMPROW [rdi+0*SIZEOF_JSAMPROW] 822 mov rsi, JSAMPROW [rdi+2*SIZEOF_JSAMPROW] 823 movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm7 824 movq XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE], xmm1 825 mov rdx, JSAMPROW [rdi+4*SIZEOF_JSAMPROW] 826 mov rsi, JSAMPROW [rdi+6*SIZEOF_JSAMPROW] 827 movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm4 828 movq XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE], xmm3 829 830 mov rdx, JSAMPROW [rdi+1*SIZEOF_JSAMPROW] 831 mov rsi, JSAMPROW [rdi+3*SIZEOF_JSAMPROW] 832 movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm6 833 movq XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE], xmm0 834 mov rdx, JSAMPROW [rdi+5*SIZEOF_JSAMPROW] 835 mov rsi, JSAMPROW [rdi+7*SIZEOF_JSAMPROW] 836 movq XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE], xmm2 837 movq XMM_MMWORD [rsi+rax*SIZEOF_JSAMPLE], xmm5 838 839 uncollect_args 840 mov rsp,rbp ; rsp <- aligned rbp 841 pop rsp ; rsp <- original rbp 842 pop rbp 843 ret 844 845; For some reason, the OS X linker does not honor the request to align the 846; segment unless we do this. 847 align 16 848