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media/libjpeg/simd/jfss2fst-64.asm@b8a032363ba2 (annotated)

media/libjpeg/simd/jfss2fst-64.asm

Thu, 22 Jan 2015 13:21:57 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 22 Jan 2015 13:21:57 +0100
branch
TOR_BUG_9701
changeset 15
b8a032363ba2
permissions
-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0 1 ;
michael@0 2 ; jfss2fst-64.asm - fast integer FDCT (64-bit SSE2)
michael@0 3 ;
michael@0 4 ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
michael@0 5 ; Copyright 2009 D. R. Commander
michael@0 6 ;
michael@0 7 ; Based on
michael@0 8 ; x86 SIMD extension for IJG JPEG library
michael@0 9 ; Copyright (C) 1999-2006, MIYASAKA Masaru.
michael@0 10 ; For conditions of distribution and use, see copyright notice in jsimdext.inc
michael@0 11 ;
michael@0 12 ; This file should be assembled with NASM (Netwide Assembler),
michael@0 13 ; can *not* be assembled with Microsoft's MASM or any compatible
michael@0 14 ; assembler (including Borland's Turbo Assembler).
michael@0 15 ; NASM is available from http://nasm.sourceforge.net/ or
michael@0 16 ; http://sourceforge.net/project/showfiles.php?group_id=6208
michael@0 17 ;
michael@0 18 ; This file contains a fast, not so accurate integer implementation of
michael@0 19 ; the forward DCT (Discrete Cosine Transform). The following code is
michael@0 20 ; based directly on the IJG's original jfdctfst.c; see the jfdctfst.c
michael@0 21 ; for more details.
michael@0 22 ;
michael@0 23 ; [TAB8]
michael@0 24
michael@0 25 %include "jsimdext.inc"
michael@0 26 %include "jdct.inc"
michael@0 27
michael@0 28 ; --------------------------------------------------------------------------
michael@0 29
michael@0 30 %define CONST_BITS 8 ; 14 is also OK.
michael@0 31
michael@0 32 %if CONST_BITS == 8
michael@0 33 F_0_382 equ 98 ; FIX(0.382683433)
michael@0 34 F_0_541 equ 139 ; FIX(0.541196100)
michael@0 35 F_0_707 equ 181 ; FIX(0.707106781)
michael@0 36 F_1_306 equ 334 ; FIX(1.306562965)
michael@0 37 %else
michael@0 38 ; NASM cannot do compile-time arithmetic on floating-point constants.
michael@0 39 %define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n))
michael@0 40 F_0_382 equ DESCALE( 410903207,30-CONST_BITS) ; FIX(0.382683433)
michael@0 41 F_0_541 equ DESCALE( 581104887,30-CONST_BITS) ; FIX(0.541196100)
michael@0 42 F_0_707 equ DESCALE( 759250124,30-CONST_BITS) ; FIX(0.707106781)
michael@0 43 F_1_306 equ DESCALE(1402911301,30-CONST_BITS) ; FIX(1.306562965)
michael@0 44 %endif
michael@0 45
michael@0 46 ; --------------------------------------------------------------------------
michael@0 47 SECTION SEG_CONST
michael@0 48
michael@0 49 ; PRE_MULTIPLY_SCALE_BITS <= 2 (to avoid overflow)
michael@0 50 ; CONST_BITS + CONST_SHIFT + PRE_MULTIPLY_SCALE_BITS == 16 (for pmulhw)
michael@0 51
michael@0 52 %define PRE_MULTIPLY_SCALE_BITS 2
michael@0 53 %define CONST_SHIFT (16 - PRE_MULTIPLY_SCALE_BITS - CONST_BITS)
michael@0 54
michael@0 55 alignz 16
michael@0 56 global EXTN(jconst_fdct_ifast_sse2)
michael@0 57
michael@0 58 EXTN(jconst_fdct_ifast_sse2):
michael@0 59
michael@0 60 PW_F0707 times 8 dw F_0_707 << CONST_SHIFT
michael@0 61 PW_F0382 times 8 dw F_0_382 << CONST_SHIFT
michael@0 62 PW_F0541 times 8 dw F_0_541 << CONST_SHIFT
michael@0 63 PW_F1306 times 8 dw F_1_306 << CONST_SHIFT
michael@0 64
michael@0 65 alignz 16
michael@0 66
michael@0 67 ; --------------------------------------------------------------------------
michael@0 68 SECTION SEG_TEXT
michael@0 69 BITS 64
michael@0 70 ;
michael@0 71 ; Perform the forward DCT on one block of samples.
michael@0 72 ;
michael@0 73 ; GLOBAL(void)
michael@0 74 ; jsimd_fdct_ifast_sse2 (DCTELEM * data)
michael@0 75 ;
michael@0 76
michael@0 77 ; r10 = DCTELEM * data
michael@0 78
michael@0 79 %define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
michael@0 80 %define WK_NUM 2
michael@0 81
michael@0 82 align 16
michael@0 83 global EXTN(jsimd_fdct_ifast_sse2)
michael@0 84
michael@0 85 EXTN(jsimd_fdct_ifast_sse2):
michael@0 86 push rbp
michael@0 87 mov rax,rsp ; rax = original rbp
michael@0 88 sub rsp, byte 4
michael@0 89 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
michael@0 90 mov [rsp],rax
michael@0 91 mov rbp,rsp ; rbp = aligned rbp
michael@0 92 lea rsp, [wk(0)]
michael@0 93 collect_args
michael@0 94
michael@0 95 ; ---- Pass 1: process rows.
michael@0 96
michael@0 97 mov rdx, r10 ; (DCTELEM *)
michael@0 98
michael@0 99 movdqa xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)]
michael@0 100 movdqa xmm1, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_DCTELEM)]
michael@0 101 movdqa xmm2, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_DCTELEM)]
michael@0 102 movdqa xmm3, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_DCTELEM)]
michael@0 103
michael@0 104 ; xmm0=(00 01 02 03 04 05 06 07), xmm2=(20 21 22 23 24 25 26 27)
michael@0 105 ; xmm1=(10 11 12 13 14 15 16 17), xmm3=(30 31 32 33 34 35 36 37)
michael@0 106
michael@0 107 movdqa xmm4,xmm0 ; transpose coefficients(phase 1)
michael@0 108 punpcklwd xmm0,xmm1 ; xmm0=(00 10 01 11 02 12 03 13)
michael@0 109 punpckhwd xmm4,xmm1 ; xmm4=(04 14 05 15 06 16 07 17)
michael@0 110 movdqa xmm5,xmm2 ; transpose coefficients(phase 1)
michael@0 111 punpcklwd xmm2,xmm3 ; xmm2=(20 30 21 31 22 32 23 33)
michael@0 112 punpckhwd xmm5,xmm3 ; xmm5=(24 34 25 35 26 36 27 37)
michael@0 113
michael@0 114 movdqa xmm6, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_DCTELEM)]
michael@0 115 movdqa xmm7, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)]
michael@0 116 movdqa xmm1, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)]
michael@0 117 movdqa xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_DCTELEM)]
michael@0 118
michael@0 119 ; xmm6=( 4 12 20 28 36 44 52 60), xmm1=( 6 14 22 30 38 46 54 62)
michael@0 120 ; xmm7=( 5 13 21 29 37 45 53 61), xmm3=( 7 15 23 31 39 47 55 63)
michael@0 121
michael@0 122 movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(20 30 21 31 22 32 23 33)
michael@0 123 movdqa XMMWORD [wk(1)], xmm5 ; wk(1)=(24 34 25 35 26 36 27 37)
michael@0 124
michael@0 125 movdqa xmm2,xmm6 ; transpose coefficients(phase 1)
michael@0 126 punpcklwd xmm6,xmm7 ; xmm6=(40 50 41 51 42 52 43 53)
michael@0 127 punpckhwd xmm2,xmm7 ; xmm2=(44 54 45 55 46 56 47 57)
michael@0 128 movdqa xmm5,xmm1 ; transpose coefficients(phase 1)
michael@0 129 punpcklwd xmm1,xmm3 ; xmm1=(60 70 61 71 62 72 63 73)
michael@0 130 punpckhwd xmm5,xmm3 ; xmm5=(64 74 65 75 66 76 67 77)
michael@0 131
michael@0 132 movdqa xmm7,xmm6 ; transpose coefficients(phase 2)
michael@0 133 punpckldq xmm6,xmm1 ; xmm6=(40 50 60 70 41 51 61 71)
michael@0 134 punpckhdq xmm7,xmm1 ; xmm7=(42 52 62 72 43 53 63 73)
michael@0 135 movdqa xmm3,xmm2 ; transpose coefficients(phase 2)
michael@0 136 punpckldq xmm2,xmm5 ; xmm2=(44 54 64 74 45 55 65 75)
michael@0 137 punpckhdq xmm3,xmm5 ; xmm3=(46 56 66 76 47 57 67 77)
michael@0 138
michael@0 139 movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(20 30 21 31 22 32 23 33)
michael@0 140 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=(24 34 25 35 26 36 27 37)
michael@0 141 movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=(42 52 62 72 43 53 63 73)
michael@0 142 movdqa XMMWORD [wk(1)], xmm2 ; wk(1)=(44 54 64 74 45 55 65 75)
michael@0 143
michael@0 144 movdqa xmm7,xmm0 ; transpose coefficients(phase 2)
michael@0 145 punpckldq xmm0,xmm1 ; xmm0=(00 10 20 30 01 11 21 31)
michael@0 146 punpckhdq xmm7,xmm1 ; xmm7=(02 12 22 32 03 13 23 33)
michael@0 147 movdqa xmm2,xmm4 ; transpose coefficients(phase 2)
michael@0 148 punpckldq xmm4,xmm5 ; xmm4=(04 14 24 34 05 15 25 35)
michael@0 149 punpckhdq xmm2,xmm5 ; xmm2=(06 16 26 36 07 17 27 37)
michael@0 150
michael@0 151 movdqa xmm1,xmm0 ; transpose coefficients(phase 3)
michael@0 152 punpcklqdq xmm0,xmm6 ; xmm0=(00 10 20 30 40 50 60 70)=data0
michael@0 153 punpckhqdq xmm1,xmm6 ; xmm1=(01 11 21 31 41 51 61 71)=data1
michael@0 154 movdqa xmm5,xmm2 ; transpose coefficients(phase 3)
michael@0 155 punpcklqdq xmm2,xmm3 ; xmm2=(06 16 26 36 46 56 66 76)=data6
michael@0 156 punpckhqdq xmm5,xmm3 ; xmm5=(07 17 27 37 47 57 67 77)=data7
michael@0 157
michael@0 158 movdqa xmm6,xmm1
michael@0 159 movdqa xmm3,xmm0
michael@0 160 psubw xmm1,xmm2 ; xmm1=data1-data6=tmp6
michael@0 161 psubw xmm0,xmm5 ; xmm0=data0-data7=tmp7
michael@0 162 paddw xmm6,xmm2 ; xmm6=data1+data6=tmp1
michael@0 163 paddw xmm3,xmm5 ; xmm3=data0+data7=tmp0
michael@0 164
michael@0 165 movdqa xmm2, XMMWORD [wk(0)] ; xmm2=(42 52 62 72 43 53 63 73)
michael@0 166 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=(44 54 64 74 45 55 65 75)
michael@0 167 movdqa XMMWORD [wk(0)], xmm1 ; wk(0)=tmp6
michael@0 168 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp7
michael@0 169
michael@0 170 movdqa xmm1,xmm7 ; transpose coefficients(phase 3)
michael@0 171 punpcklqdq xmm7,xmm2 ; xmm7=(02 12 22 32 42 52 62 72)=data2
michael@0 172 punpckhqdq xmm1,xmm2 ; xmm1=(03 13 23 33 43 53 63 73)=data3
michael@0 173 movdqa xmm0,xmm4 ; transpose coefficients(phase 3)
michael@0 174 punpcklqdq xmm4,xmm5 ; xmm4=(04 14 24 34 44 54 64 74)=data4
michael@0 175 punpckhqdq xmm0,xmm5 ; xmm0=(05 15 25 35 45 55 65 75)=data5
michael@0 176
michael@0 177 movdqa xmm2,xmm1
michael@0 178 movdqa xmm5,xmm7
michael@0 179 paddw xmm1,xmm4 ; xmm1=data3+data4=tmp3
michael@0 180 paddw xmm7,xmm0 ; xmm7=data2+data5=tmp2
michael@0 181 psubw xmm2,xmm4 ; xmm2=data3-data4=tmp4
michael@0 182 psubw xmm5,xmm0 ; xmm5=data2-data5=tmp5
michael@0 183
michael@0 184 ; -- Even part
michael@0 185
michael@0 186 movdqa xmm4,xmm3
michael@0 187 movdqa xmm0,xmm6
michael@0 188 psubw xmm3,xmm1 ; xmm3=tmp13
michael@0 189 psubw xmm6,xmm7 ; xmm6=tmp12
michael@0 190 paddw xmm4,xmm1 ; xmm4=tmp10
michael@0 191 paddw xmm0,xmm7 ; xmm0=tmp11
michael@0 192
michael@0 193 paddw xmm6,xmm3
michael@0 194 psllw xmm6,PRE_MULTIPLY_SCALE_BITS
michael@0 195 pmulhw xmm6,[rel PW_F0707] ; xmm6=z1
michael@0 196
michael@0 197 movdqa xmm1,xmm4
michael@0 198 movdqa xmm7,xmm3
michael@0 199 psubw xmm4,xmm0 ; xmm4=data4
michael@0 200 psubw xmm3,xmm6 ; xmm3=data6
michael@0 201 paddw xmm1,xmm0 ; xmm1=data0
michael@0 202 paddw xmm7,xmm6 ; xmm7=data2
michael@0 203
michael@0 204 movdqa xmm0, XMMWORD [wk(0)] ; xmm0=tmp6
michael@0 205 movdqa xmm6, XMMWORD [wk(1)] ; xmm6=tmp7
michael@0 206 movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=data4
michael@0 207 movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=data6
michael@0 208
michael@0 209 ; -- Odd part
michael@0 210
michael@0 211 paddw xmm2,xmm5 ; xmm2=tmp10
michael@0 212 paddw xmm5,xmm0 ; xmm5=tmp11
michael@0 213 paddw xmm0,xmm6 ; xmm0=tmp12, xmm6=tmp7
michael@0 214
michael@0 215 psllw xmm2,PRE_MULTIPLY_SCALE_BITS
michael@0 216 psllw xmm0,PRE_MULTIPLY_SCALE_BITS
michael@0 217
michael@0 218 psllw xmm5,PRE_MULTIPLY_SCALE_BITS
michael@0 219 pmulhw xmm5,[rel PW_F0707] ; xmm5=z3
michael@0 220
michael@0 221 movdqa xmm4,xmm2 ; xmm4=tmp10
michael@0 222 psubw xmm2,xmm0
michael@0 223 pmulhw xmm2,[rel PW_F0382] ; xmm2=z5
michael@0 224 pmulhw xmm4,[rel PW_F0541] ; xmm4=MULTIPLY(tmp10,FIX_0_541196)
michael@0 225 pmulhw xmm0,[rel PW_F1306] ; xmm0=MULTIPLY(tmp12,FIX_1_306562)
michael@0 226 paddw xmm4,xmm2 ; xmm4=z2
michael@0 227 paddw xmm0,xmm2 ; xmm0=z4
michael@0 228
michael@0 229 movdqa xmm3,xmm6
michael@0 230 psubw xmm6,xmm5 ; xmm6=z13
michael@0 231 paddw xmm3,xmm5 ; xmm3=z11
michael@0 232
michael@0 233 movdqa xmm2,xmm6
michael@0 234 movdqa xmm5,xmm3
michael@0 235 psubw xmm6,xmm4 ; xmm6=data3
michael@0 236 psubw xmm3,xmm0 ; xmm3=data7
michael@0 237 paddw xmm2,xmm4 ; xmm2=data5
michael@0 238 paddw xmm5,xmm0 ; xmm5=data1
michael@0 239
michael@0 240 ; ---- Pass 2: process columns.
michael@0 241
michael@0 242 ; xmm1=(00 10 20 30 40 50 60 70), xmm7=(02 12 22 32 42 52 62 72)
michael@0 243 ; xmm5=(01 11 21 31 41 51 61 71), xmm6=(03 13 23 33 43 53 63 73)
michael@0 244
michael@0 245 movdqa xmm4,xmm1 ; transpose coefficients(phase 1)
michael@0 246 punpcklwd xmm1,xmm5 ; xmm1=(00 01 10 11 20 21 30 31)
michael@0 247 punpckhwd xmm4,xmm5 ; xmm4=(40 41 50 51 60 61 70 71)
michael@0 248 movdqa xmm0,xmm7 ; transpose coefficients(phase 1)
michael@0 249 punpcklwd xmm7,xmm6 ; xmm7=(02 03 12 13 22 23 32 33)
michael@0 250 punpckhwd xmm0,xmm6 ; xmm0=(42 43 52 53 62 63 72 73)
michael@0 251
michael@0 252 movdqa xmm5, XMMWORD [wk(0)] ; xmm5=col4
michael@0 253 movdqa xmm6, XMMWORD [wk(1)] ; xmm6=col6
michael@0 254
michael@0 255 ; xmm5=(04 14 24 34 44 54 64 74), xmm6=(06 16 26 36 46 56 66 76)
michael@0 256 ; xmm2=(05 15 25 35 45 55 65 75), xmm3=(07 17 27 37 47 57 67 77)
michael@0 257
michael@0 258 movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=(02 03 12 13 22 23 32 33)
michael@0 259 movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=(42 43 52 53 62 63 72 73)
michael@0 260
michael@0 261 movdqa xmm7,xmm5 ; transpose coefficients(phase 1)
michael@0 262 punpcklwd xmm5,xmm2 ; xmm5=(04 05 14 15 24 25 34 35)
michael@0 263 punpckhwd xmm7,xmm2 ; xmm7=(44 45 54 55 64 65 74 75)
michael@0 264 movdqa xmm0,xmm6 ; transpose coefficients(phase 1)
michael@0 265 punpcklwd xmm6,xmm3 ; xmm6=(06 07 16 17 26 27 36 37)
michael@0 266 punpckhwd xmm0,xmm3 ; xmm0=(46 47 56 57 66 67 76 77)
michael@0 267
michael@0 268 movdqa xmm2,xmm5 ; transpose coefficients(phase 2)
michael@0 269 punpckldq xmm5,xmm6 ; xmm5=(04 05 06 07 14 15 16 17)
michael@0 270 punpckhdq xmm2,xmm6 ; xmm2=(24 25 26 27 34 35 36 37)
michael@0 271 movdqa xmm3,xmm7 ; transpose coefficients(phase 2)
michael@0 272 punpckldq xmm7,xmm0 ; xmm7=(44 45 46 47 54 55 56 57)
michael@0 273 punpckhdq xmm3,xmm0 ; xmm3=(64 65 66 67 74 75 76 77)
michael@0 274
michael@0 275 movdqa xmm6, XMMWORD [wk(0)] ; xmm6=(02 03 12 13 22 23 32 33)
michael@0 276 movdqa xmm0, XMMWORD [wk(1)] ; xmm0=(42 43 52 53 62 63 72 73)
michael@0 277 movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(24 25 26 27 34 35 36 37)
michael@0 278 movdqa XMMWORD [wk(1)], xmm7 ; wk(1)=(44 45 46 47 54 55 56 57)
michael@0 279
michael@0 280 movdqa xmm2,xmm1 ; transpose coefficients(phase 2)
michael@0 281 punpckldq xmm1,xmm6 ; xmm1=(00 01 02 03 10 11 12 13)
michael@0 282 punpckhdq xmm2,xmm6 ; xmm2=(20 21 22 23 30 31 32 33)
michael@0 283 movdqa xmm7,xmm4 ; transpose coefficients(phase 2)
michael@0 284 punpckldq xmm4,xmm0 ; xmm4=(40 41 42 43 50 51 52 53)
michael@0 285 punpckhdq xmm7,xmm0 ; xmm7=(60 61 62 63 70 71 72 73)
michael@0 286
michael@0 287 movdqa xmm6,xmm1 ; transpose coefficients(phase 3)
michael@0 288 punpcklqdq xmm1,xmm5 ; xmm1=(00 01 02 03 04 05 06 07)=data0
michael@0 289 punpckhqdq xmm6,xmm5 ; xmm6=(10 11 12 13 14 15 16 17)=data1
michael@0 290 movdqa xmm0,xmm7 ; transpose coefficients(phase 3)
michael@0 291 punpcklqdq xmm7,xmm3 ; xmm7=(60 61 62 63 64 65 66 67)=data6
michael@0 292 punpckhqdq xmm0,xmm3 ; xmm0=(70 71 72 73 74 75 76 77)=data7
michael@0 293
michael@0 294 movdqa xmm5,xmm6
michael@0 295 movdqa xmm3,xmm1
michael@0 296 psubw xmm6,xmm7 ; xmm6=data1-data6=tmp6
michael@0 297 psubw xmm1,xmm0 ; xmm1=data0-data7=tmp7
michael@0 298 paddw xmm5,xmm7 ; xmm5=data1+data6=tmp1
michael@0 299 paddw xmm3,xmm0 ; xmm3=data0+data7=tmp0
michael@0 300
michael@0 301 movdqa xmm7, XMMWORD [wk(0)] ; xmm7=(24 25 26 27 34 35 36 37)
michael@0 302 movdqa xmm0, XMMWORD [wk(1)] ; xmm0=(44 45 46 47 54 55 56 57)
michael@0 303 movdqa XMMWORD [wk(0)], xmm6 ; wk(0)=tmp6
michael@0 304 movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=tmp7
michael@0 305
michael@0 306 movdqa xmm6,xmm2 ; transpose coefficients(phase 3)
michael@0 307 punpcklqdq xmm2,xmm7 ; xmm2=(20 21 22 23 24 25 26 27)=data2
michael@0 308 punpckhqdq xmm6,xmm7 ; xmm6=(30 31 32 33 34 35 36 37)=data3
michael@0 309 movdqa xmm1,xmm4 ; transpose coefficients(phase 3)
michael@0 310 punpcklqdq xmm4,xmm0 ; xmm4=(40 41 42 43 44 45 46 47)=data4
michael@0 311 punpckhqdq xmm1,xmm0 ; xmm1=(50 51 52 53 54 55 56 57)=data5
michael@0 312
michael@0 313 movdqa xmm7,xmm6
michael@0 314 movdqa xmm0,xmm2
michael@0 315 paddw xmm6,xmm4 ; xmm6=data3+data4=tmp3
michael@0 316 paddw xmm2,xmm1 ; xmm2=data2+data5=tmp2
michael@0 317 psubw xmm7,xmm4 ; xmm7=data3-data4=tmp4
michael@0 318 psubw xmm0,xmm1 ; xmm0=data2-data5=tmp5
michael@0 319
michael@0 320 ; -- Even part
michael@0 321
michael@0 322 movdqa xmm4,xmm3
michael@0 323 movdqa xmm1,xmm5
michael@0 324 psubw xmm3,xmm6 ; xmm3=tmp13
michael@0 325 psubw xmm5,xmm2 ; xmm5=tmp12
michael@0 326 paddw xmm4,xmm6 ; xmm4=tmp10
michael@0 327 paddw xmm1,xmm2 ; xmm1=tmp11
michael@0 328
michael@0 329 paddw xmm5,xmm3
michael@0 330 psllw xmm5,PRE_MULTIPLY_SCALE_BITS
michael@0 331 pmulhw xmm5,[rel PW_F0707] ; xmm5=z1
michael@0 332
michael@0 333 movdqa xmm6,xmm4
michael@0 334 movdqa xmm2,xmm3
michael@0 335 psubw xmm4,xmm1 ; xmm4=data4
michael@0 336 psubw xmm3,xmm5 ; xmm3=data6
michael@0 337 paddw xmm6,xmm1 ; xmm6=data0
michael@0 338 paddw xmm2,xmm5 ; xmm2=data2
michael@0 339
michael@0 340 movdqa XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_DCTELEM)], xmm4
michael@0 341 movdqa XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)], xmm3
michael@0 342 movdqa XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)], xmm6
michael@0 343 movdqa XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_DCTELEM)], xmm2
michael@0 344
michael@0 345 ; -- Odd part
michael@0 346
michael@0 347 movdqa xmm1, XMMWORD [wk(0)] ; xmm1=tmp6
michael@0 348 movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp7
michael@0 349
michael@0 350 paddw xmm7,xmm0 ; xmm7=tmp10
michael@0 351 paddw xmm0,xmm1 ; xmm0=tmp11
michael@0 352 paddw xmm1,xmm5 ; xmm1=tmp12, xmm5=tmp7
michael@0 353
michael@0 354 psllw xmm7,PRE_MULTIPLY_SCALE_BITS
michael@0 355 psllw xmm1,PRE_MULTIPLY_SCALE_BITS
michael@0 356
michael@0 357 psllw xmm0,PRE_MULTIPLY_SCALE_BITS
michael@0 358 pmulhw xmm0,[rel PW_F0707] ; xmm0=z3
michael@0 359
michael@0 360 movdqa xmm4,xmm7 ; xmm4=tmp10
michael@0 361 psubw xmm7,xmm1
michael@0 362 pmulhw xmm7,[rel PW_F0382] ; xmm7=z5
michael@0 363 pmulhw xmm4,[rel PW_F0541] ; xmm4=MULTIPLY(tmp10,FIX_0_541196)
michael@0 364 pmulhw xmm1,[rel PW_F1306] ; xmm1=MULTIPLY(tmp12,FIX_1_306562)
michael@0 365 paddw xmm4,xmm7 ; xmm4=z2
michael@0 366 paddw xmm1,xmm7 ; xmm1=z4
michael@0 367
michael@0 368 movdqa xmm3,xmm5
michael@0 369 psubw xmm5,xmm0 ; xmm5=z13
michael@0 370 paddw xmm3,xmm0 ; xmm3=z11
michael@0 371
michael@0 372 movdqa xmm6,xmm5
michael@0 373 movdqa xmm2,xmm3
michael@0 374 psubw xmm5,xmm4 ; xmm5=data3
michael@0 375 psubw xmm3,xmm1 ; xmm3=data7
michael@0 376 paddw xmm6,xmm4 ; xmm6=data5
michael@0 377 paddw xmm2,xmm1 ; xmm2=data1
michael@0 378
michael@0 379 movdqa XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_DCTELEM)], xmm5
michael@0 380 movdqa XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_DCTELEM)], xmm3
michael@0 381 movdqa XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)], xmm6
michael@0 382 movdqa XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_DCTELEM)], xmm2
michael@0 383
michael@0 384 uncollect_args
michael@0 385 mov rsp,rbp ; rsp <- aligned rbp
michael@0 386 pop rsp ; rsp <- original rbp
michael@0 387 pop rbp
michael@0 388 ret
michael@0 389
michael@0 390 ; For some reason, the OS X linker does not honor the request to align the
michael@0 391 ; segment unless we do this.
michael@0 392 align 16

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