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kc3-lang/libjpeg-turbo/simd/x86_64/jidctfst-sse2.asm
DRC
- simd/x86_64/jidctfst-sse2.asm
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; ; Fast integer IDCT (64-bit SSE2) ; ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB ; Copyright (C) 2009, 2016, 2024-2025, D. R. Commander. ; Copyright (C) 2018, Matthias Räncker. ; Copyright (C) 2023, Aliaksiej Kandracienka. ; ; Based on the x86 SIMD extension for IJG JPEG library ; Copyright (C) 1999-2006, MIYASAKA Masaru. ; For conditions of distribution and use, see copyright notice in jsimdext.inc ; ; This file should be assembled with NASM (Netwide Assembler) or Yasm. ; ; This file contains a fast, not so accurate integer implementation of the ; inverse DCT (Discrete Cosine Transform). The following code is based ; directly on the IJG's original jidctfst.c; see jidctfst.c for more details. %include "jsimdext.inc" %include "jdct.inc" ; -------------------------------------------------------------------------- %define CONST_BITS 8 ; 14 is also OK. %define PASS1_BITS 2 %if IFAST_SCALE_BITS != PASS1_BITS %error "'IFAST_SCALE_BITS' must be equal to 'PASS1_BITS'." %endif %if CONST_BITS == 8 F_1_082 equ 277 ; FIX(1.082392200) F_1_414 equ 362 ; FIX(1.414213562) F_1_847 equ 473 ; FIX(1.847759065) F_2_613 equ 669 ; FIX(2.613125930) F_1_613 equ (F_2_613 - 256) ; FIX(2.613125930) - FIX(1) %else ; NASM cannot do compile-time arithmetic on floating-point constants. %define DESCALE(x, n) (((x) + (1 << ((n) - 1))) >> (n)) F_1_082 equ DESCALE(1162209775, 30 - CONST_BITS) ; FIX(1.082392200) F_1_414 equ DESCALE(1518500249, 30 - CONST_BITS) ; FIX(1.414213562) F_1_847 equ DESCALE(1984016188, 30 - CONST_BITS) ; FIX(1.847759065) F_2_613 equ DESCALE(2805822602, 30 - CONST_BITS) ; FIX(2.613125930) F_1_613 equ (F_2_613 - (1 << CONST_BITS)) ; FIX(2.613125930) - FIX(1) %endif ; -------------------------------------------------------------------------- SECTION SEG_CONST ; PRE_MULTIPLY_SCALE_BITS <= 2 (to avoid overflow) ; CONST_BITS + CONST_SHIFT + PRE_MULTIPLY_SCALE_BITS == 16 (for pmulhw) %define PRE_MULTIPLY_SCALE_BITS 2 %define CONST_SHIFT (16 - PRE_MULTIPLY_SCALE_BITS - CONST_BITS) ALIGNZ 32 GLOBAL_DATA(jconst_idct_ifast_sse2) EXTN(jconst_idct_ifast_sse2): PW_F1414 times 8 dw F_1_414 << CONST_SHIFT PW_F1847 times 8 dw F_1_847 << CONST_SHIFT PW_MF1613 times 8 dw -F_1_613 << CONST_SHIFT PW_F1082 times 8 dw F_1_082 << CONST_SHIFT PB_CENTERJSAMP times 16 db CENTERJSAMPLE ALIGNZ 32 ; -------------------------------------------------------------------------- SECTION SEG_TEXT BITS 64 ; Perform dequantization and inverse DCT on one block of coefficients. ; ; GLOBAL(void) ; jsimd_idct_ifast_sse2(void *dct_table, JCOEFPTR coef_block, ; JSAMPARRAY output_buf, JDIMENSION output_col) ; ; r10 = jpeg_component_info *compptr ; r11 = JCOEFPTR coef_block ; r12 = JSAMPARRAY output_buf ; r13d = JDIMENSION output_col %define wk(i) r15 - (WK_NUM - (i)) * SIZEOF_XMMWORD ; xmmword wk[WK_NUM] %define WK_NUM 2 align 32 GLOBAL_FUNCTION(jsimd_idct_ifast_sse2) EXTN(jsimd_idct_ifast_sse2): ENDBR64 push rbp mov rbp, rsp push r15 and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits ; Allocate stack space for wk array. r15 is used to access it. mov r15, rsp sub rsp, byte (SIZEOF_XMMWORD * WK_NUM) COLLECT_ARGS 4 ; ---- Pass 1: process columns from input. mov rdx, r10 ; quantptr mov rsi, r11 ; inptr %ifndef NO_ZERO_COLUMN_TEST_IFAST_SSE2 mov eax, dword [DWBLOCK(1, 0, rsi, SIZEOF_JCOEF)] or eax, dword [DWBLOCK(2, 0, rsi, SIZEOF_JCOEF)] jnz near .columnDCT movdqa xmm0, XMMWORD [XMMBLOCK(1, 0, rsi, SIZEOF_JCOEF)] movdqa xmm1, XMMWORD [XMMBLOCK(2, 0, rsi, SIZEOF_JCOEF)] por xmm0, XMMWORD [XMMBLOCK(3, 0, rsi, SIZEOF_JCOEF)] por xmm1, XMMWORD [XMMBLOCK(4, 0, rsi, SIZEOF_JCOEF)] por xmm0, XMMWORD [XMMBLOCK(5, 0, rsi, SIZEOF_JCOEF)] por xmm1, XMMWORD [XMMBLOCK(6, 0, rsi, SIZEOF_JCOEF)] por xmm0, XMMWORD [XMMBLOCK(7, 0, rsi, SIZEOF_JCOEF)] por xmm1, xmm0 packsswb xmm1, xmm1 packsswb xmm1, xmm1 movd eax, xmm1 test rax, rax jnz short .columnDCT ; -- AC terms all zero movdqa xmm0, XMMWORD [XMMBLOCK(0, 0, rsi, SIZEOF_JCOEF)] pmullw xmm0, XMMWORD [XMMBLOCK(0, 0, rdx, SIZEOF_ISLOW_MULT_TYPE)] movdqa xmm7, xmm0 ; xmm0 = in0 = (00 01 02 03 04 05 06 07) punpcklwd xmm0, xmm0 ; xmm0 = (00 00 01 01 02 02 03 03) punpckhwd xmm7, xmm7 ; xmm7 = (04 04 05 05 06 06 07 07) pshufd xmm6, xmm0, 0x00 ; xmm6 = col0 = (00 00 00 00 00 00 00 00) pshufd xmm2, xmm0, 0x55 ; xmm2 = col1 = (01 01 01 01 01 01 01 01) pshufd xmm5, xmm0, 0xAA ; xmm5 = col2 = (02 02 02 02 02 02 02 02) pshufd xmm0, xmm0, 0xFF ; xmm0 = col3 = (03 03 03 03 03 03 03 03) pshufd xmm1, xmm7, 0x00 ; xmm1 = col4 = (04 04 04 04 04 04 04 04) pshufd xmm4, xmm7, 0x55 ; xmm4 = col5 = (05 05 05 05 05 05 05 05) pshufd xmm3, xmm7, 0xAA ; xmm3 = col6 = (06 06 06 06 06 06 06 06) pshufd xmm7, xmm7, 0xFF ; xmm7 = col7 = (07 07 07 07 07 07 07 07) movdqa XMMWORD [wk(0)], xmm2 ; wk(0) = col1 movdqa XMMWORD [wk(1)], xmm0 ; wk(1) = col3 jmp near .column_end %endif .columnDCT: ; -- Even part movdqa xmm0, XMMWORD [XMMBLOCK(0, 0, rsi, SIZEOF_JCOEF)] movdqa xmm1, XMMWORD [XMMBLOCK(2, 0, rsi, SIZEOF_JCOEF)] pmullw xmm0, XMMWORD [XMMBLOCK(0, 0, rdx, SIZEOF_IFAST_MULT_TYPE)] pmullw xmm1, XMMWORD [XMMBLOCK(2, 0, rdx, SIZEOF_IFAST_MULT_TYPE)] movdqa xmm2, XMMWORD [XMMBLOCK(4, 0, rsi, SIZEOF_JCOEF)] movdqa xmm3, XMMWORD [XMMBLOCK(6, 0, rsi, SIZEOF_JCOEF)] pmullw xmm2, XMMWORD [XMMBLOCK(4, 0, rdx, SIZEOF_IFAST_MULT_TYPE)] pmullw xmm3, XMMWORD [XMMBLOCK(6, 0, rdx, SIZEOF_IFAST_MULT_TYPE)] movdqa xmm4, xmm0 movdqa xmm5, xmm1 psubw xmm0, xmm2 ; xmm0 = tmp11 psubw xmm1, xmm3 paddw xmm4, xmm2 ; xmm4 = tmp10 paddw xmm5, xmm3 ; xmm5 = tmp13 psllw xmm1, PRE_MULTIPLY_SCALE_BITS pmulhw xmm1, [rel PW_F1414] psubw xmm1, xmm5 ; xmm1 = tmp12 movdqa xmm6, xmm4 movdqa xmm7, xmm0 psubw xmm4, xmm5 ; xmm4 = tmp3 psubw xmm0, xmm1 ; xmm0 = tmp2 paddw xmm6, xmm5 ; xmm6 = tmp0 paddw xmm7, xmm1 ; xmm7 = tmp1 movdqa XMMWORD [wk(1)], xmm4 ; wk(1) = tmp3 movdqa XMMWORD [wk(0)], xmm0 ; wk(0) = tmp2 ; -- Odd part movdqa xmm2, XMMWORD [XMMBLOCK(1, 0, rsi, SIZEOF_JCOEF)] movdqa xmm3, XMMWORD [XMMBLOCK(3, 0, rsi, SIZEOF_JCOEF)] pmullw xmm2, XMMWORD [XMMBLOCK(1, 0, rdx, SIZEOF_IFAST_MULT_TYPE)] pmullw xmm3, XMMWORD [XMMBLOCK(3, 0, rdx, SIZEOF_IFAST_MULT_TYPE)] movdqa xmm5, XMMWORD [XMMBLOCK(5, 0, rsi, SIZEOF_JCOEF)] movdqa xmm1, XMMWORD [XMMBLOCK(7, 0, rsi, SIZEOF_JCOEF)] pmullw xmm5, XMMWORD [XMMBLOCK(5, 0, rdx, SIZEOF_IFAST_MULT_TYPE)] pmullw xmm1, XMMWORD [XMMBLOCK(7, 0, rdx, SIZEOF_IFAST_MULT_TYPE)] movdqa xmm4, xmm2 movdqa xmm0, xmm5 psubw xmm2, xmm1 ; xmm2 = z12 psubw xmm5, xmm3 ; xmm5 = z10 paddw xmm4, xmm1 ; xmm4 = z11 paddw xmm0, xmm3 ; xmm0 = z13 movdqa xmm1, xmm5 ; xmm1 = z10(unscaled) psllw xmm2, PRE_MULTIPLY_SCALE_BITS psllw xmm5, PRE_MULTIPLY_SCALE_BITS movdqa xmm3, xmm4 psubw xmm4, xmm0 paddw xmm3, xmm0 ; xmm3 = tmp7 psllw xmm4, PRE_MULTIPLY_SCALE_BITS pmulhw xmm4, [rel PW_F1414] ; xmm4 = tmp11 ; To avoid overflow... ; ; (Original) ; tmp12 = -2.613125930 * z10 + z5; ; ; (This implementation) ; tmp12 = (-1.613125930 - 1) * z10 + z5; ; = -1.613125930 * z10 - z10 + z5; movdqa xmm0, xmm5 paddw xmm5, xmm2 pmulhw xmm5, [rel PW_F1847] ; xmm5 = z5 pmulhw xmm0, [rel PW_MF1613] pmulhw xmm2, [rel PW_F1082] psubw xmm0, xmm1 psubw xmm2, xmm5 ; xmm2 = tmp10 paddw xmm0, xmm5 ; xmm0 = tmp12 ; -- Final output stage psubw xmm0, xmm3 ; xmm0 = tmp6 movdqa xmm1, xmm6 movdqa xmm5, xmm7 paddw xmm6, xmm3 ; xmm6 = data0 = (00 01 02 03 04 05 06 07) paddw xmm7, xmm0 ; xmm7 = data1 = (10 11 12 13 14 15 16 17) psubw xmm1, xmm3 ; xmm1 = data7 = (70 71 72 73 74 75 76 77) psubw xmm5, xmm0 ; xmm5 = data6 = (60 61 62 63 64 65 66 67) psubw xmm4, xmm0 ; xmm4 = tmp5 movdqa xmm3, xmm6 ; transpose coefficients(phase 1) punpcklwd xmm6, xmm7 ; xmm6 = (00 10 01 11 02 12 03 13) punpckhwd xmm3, xmm7 ; xmm3 = (04 14 05 15 06 16 07 17) movdqa xmm0, xmm5 ; transpose coefficients(phase 1) punpcklwd xmm5, xmm1 ; xmm5 = (60 70 61 71 62 72 63 73) punpckhwd xmm0, xmm1 ; xmm0 = (64 74 65 75 66 76 67 77) movdqa xmm7, XMMWORD [wk(0)] ; xmm7 = tmp2 movdqa xmm1, XMMWORD [wk(1)] ; xmm1 = tmp3 movdqa XMMWORD [wk(0)], xmm5 ; wk(0) = (60 70 61 71 62 72 63 73) movdqa XMMWORD [wk(1)], xmm0 ; wk(1) = (64 74 65 75 66 76 67 77) paddw xmm2, xmm4 ; xmm2 = tmp4 movdqa xmm5, xmm7 movdqa xmm0, xmm1 paddw xmm7, xmm4 ; xmm7 = data2 = (20 21 22 23 24 25 26 27) paddw xmm1, xmm2 ; xmm1 = data4 = (40 41 42 43 44 45 46 47) psubw xmm5, xmm4 ; xmm5 = data5 = (50 51 52 53 54 55 56 57) psubw xmm0, xmm2 ; xmm0 = data3 = (30 31 32 33 34 35 36 37) movdqa xmm4, xmm7 ; transpose coefficients(phase 1) punpcklwd xmm7, xmm0 ; xmm7 = (20 30 21 31 22 32 23 33) punpckhwd xmm4, xmm0 ; xmm4 = (24 34 25 35 26 36 27 37) movdqa xmm2, xmm1 ; transpose coefficients(phase 1) punpcklwd xmm1, xmm5 ; xmm1 = (40 50 41 51 42 52 43 53) punpckhwd xmm2, xmm5 ; xmm2 = (44 54 45 55 46 56 47 57) movdqa xmm0, xmm3 ; transpose coefficients(phase 2) punpckldq xmm3, xmm4 ; xmm3 = (04 14 24 34 05 15 25 35) punpckhdq xmm0, xmm4 ; xmm0 = (06 16 26 36 07 17 27 37) movdqa xmm5, xmm6 ; transpose coefficients(phase 2) punpckldq xmm6, xmm7 ; xmm6 = (00 10 20 30 01 11 21 31) punpckhdq xmm5, xmm7 ; xmm5 = (02 12 22 32 03 13 23 33) movdqa xmm4, XMMWORD [wk(0)] ; xmm4 = (60 70 61 71 62 72 63 73) movdqa xmm7, XMMWORD [wk(1)] ; xmm7 = (64 74 65 75 66 76 67 77) movdqa XMMWORD [wk(0)], xmm3 ; wk(0) = (04 14 24 34 05 15 25 35) movdqa XMMWORD [wk(1)], xmm0 ; wk(1) = (06 16 26 36 07 17 27 37) movdqa xmm3, xmm1 ; transpose coefficients(phase 2) punpckldq xmm1, xmm4 ; xmm1 = (40 50 60 70 41 51 61 71) punpckhdq xmm3, xmm4 ; xmm3 = (42 52 62 72 43 53 63 73) movdqa xmm0, xmm2 ; transpose coefficients(phase 2) punpckldq xmm2, xmm7 ; xmm2 = (44 54 64 74 45 55 65 75) punpckhdq xmm0, xmm7 ; xmm0 = (46 56 66 76 47 57 67 77) movdqa xmm4, xmm6 ; transpose coefficients(phase 3) punpcklqdq xmm6, xmm1 ; xmm6 = col0 = (00 10 20 30 40 50 60 70) punpckhqdq xmm4, xmm1 ; xmm4 = col1 = (01 11 21 31 41 51 61 71) movdqa xmm7, xmm5 ; transpose coefficients(phase 3) punpcklqdq xmm5, xmm3 ; xmm5 = col2 = (02 12 22 32 42 52 62 72) punpckhqdq xmm7, xmm3 ; xmm7 = col3 = (03 13 23 33 43 53 63 73) movdqa xmm1, XMMWORD [wk(0)] ; xmm1 = (04 14 24 34 05 15 25 35) movdqa xmm3, XMMWORD [wk(1)] ; xmm3 = (06 16 26 36 07 17 27 37) movdqa XMMWORD [wk(0)], xmm4 ; wk(0) = col1 movdqa XMMWORD [wk(1)], xmm7 ; wk(1) = col3 movdqa xmm4, xmm1 ; transpose coefficients(phase 3) punpcklqdq xmm1, xmm2 ; xmm1 = col4 = (04 14 24 34 44 54 64 74) punpckhqdq xmm4, xmm2 ; xmm4 = col5 = (05 15 25 35 45 55 65 75) movdqa xmm7, xmm3 ; transpose coefficients(phase 3) punpcklqdq xmm3, xmm0 ; xmm3 = col6 = (06 16 26 36 46 56 66 76) punpckhqdq xmm7, xmm0 ; xmm7 = col7 = (07 17 27 37 47 57 67 77) .column_end: ; -- Prefetch the next coefficient block prefetchnta [rsi + DCTSIZE2 * SIZEOF_JCOEF + 0 * 32] prefetchnta [rsi + DCTSIZE2 * SIZEOF_JCOEF + 1 * 32] prefetchnta [rsi + DCTSIZE2 * SIZEOF_JCOEF + 2 * 32] prefetchnta [rsi + DCTSIZE2 * SIZEOF_JCOEF + 3 * 32] ; ---- Pass 2: process rows from work array, store into output array. mov rdi, r12 ; (JSAMPROW *) mov eax, r13d ; -- Even part ; xmm6 = col0, xmm5 = col2, xmm1 = col4, xmm3 = col6 movdqa xmm2, xmm6 movdqa xmm0, xmm5 psubw xmm6, xmm1 ; xmm6 = tmp11 psubw xmm5, xmm3 paddw xmm2, xmm1 ; xmm2 = tmp10 paddw xmm0, xmm3 ; xmm0 = tmp13 psllw xmm5, PRE_MULTIPLY_SCALE_BITS pmulhw xmm5, [rel PW_F1414] psubw xmm5, xmm0 ; xmm5 = tmp12 movdqa xmm1, xmm2 movdqa xmm3, xmm6 psubw xmm2, xmm0 ; xmm2 = tmp3 psubw xmm6, xmm5 ; xmm6 = tmp2 paddw xmm1, xmm0 ; xmm1 = tmp0 paddw xmm3, xmm5 ; xmm3 = tmp1 movdqa xmm0, XMMWORD [wk(0)] ; xmm0 = col1 movdqa xmm5, XMMWORD [wk(1)] ; xmm5 = col3 movdqa XMMWORD [wk(0)], xmm2 ; wk(0) = tmp3 movdqa XMMWORD [wk(1)], xmm6 ; wk(1) = tmp2 ; -- Odd part ; xmm0 = col1, xmm5 = col3, xmm4 = col5, xmm7 = col7 movdqa xmm2, xmm0 movdqa xmm6, xmm4 psubw xmm0, xmm7 ; xmm0 = z12 psubw xmm4, xmm5 ; xmm4 = z10 paddw xmm2, xmm7 ; xmm2 = z11 paddw xmm6, xmm5 ; xmm6 = z13 movdqa xmm7, xmm4 ; xmm7 = z10(unscaled) psllw xmm0, PRE_MULTIPLY_SCALE_BITS psllw xmm4, PRE_MULTIPLY_SCALE_BITS movdqa xmm5, xmm2 psubw xmm2, xmm6 paddw xmm5, xmm6 ; xmm5 = tmp7 psllw xmm2, PRE_MULTIPLY_SCALE_BITS pmulhw xmm2, [rel PW_F1414] ; xmm2 = tmp11 ; To avoid overflow... ; ; (Original) ; tmp12 = -2.613125930 * z10 + z5; ; ; (This implementation) ; tmp12 = (-1.613125930 - 1) * z10 + z5; ; = -1.613125930 * z10 - z10 + z5; movdqa xmm6, xmm4 paddw xmm4, xmm0 pmulhw xmm4, [rel PW_F1847] ; xmm4 = z5 pmulhw xmm6, [rel PW_MF1613] pmulhw xmm0, [rel PW_F1082] psubw xmm6, xmm7 psubw xmm0, xmm4 ; xmm0 = tmp10 paddw xmm6, xmm4 ; xmm6 = tmp12 ; -- Final output stage psubw xmm6, xmm5 ; xmm6 = tmp6 movdqa xmm7, xmm1 movdqa xmm4, xmm3 paddw xmm1, xmm5 ; xmm1 = data0 = (00 10 20 30 40 50 60 70) paddw xmm3, xmm6 ; xmm3 = data1 = (01 11 21 31 41 51 61 71) psraw xmm1, (PASS1_BITS + 3) ; descale psraw xmm3, (PASS1_BITS + 3) ; descale psubw xmm7, xmm5 ; xmm7 = data7 = (07 17 27 37 47 57 67 77) psubw xmm4, xmm6 ; xmm4 = data6 = (06 16 26 36 46 56 66 76) psraw xmm7, (PASS1_BITS + 3) ; descale psraw xmm4, (PASS1_BITS + 3) ; descale psubw xmm2, xmm6 ; xmm2 = tmp5 packsswb xmm1, xmm4 ; xmm1 = (00 10 20 30 40 50 60 70 06 16 26 36 46 56 66 76) packsswb xmm3, xmm7 ; xmm3 = (01 11 21 31 41 51 61 71 07 17 27 37 47 57 67 77) movdqa xmm5, XMMWORD [wk(1)] ; xmm5 = tmp2 movdqa xmm6, XMMWORD [wk(0)] ; xmm6 = tmp3 paddw xmm0, xmm2 ; xmm0 = tmp4 movdqa xmm4, xmm5 movdqa xmm7, xmm6 paddw xmm5, xmm2 ; xmm5 = data2 = (02 12 22 32 42 52 62 72) paddw xmm6, xmm0 ; xmm6 = data4 = (04 14 24 34 44 54 64 74) psraw xmm5, (PASS1_BITS + 3) ; descale psraw xmm6, (PASS1_BITS + 3) ; descale psubw xmm4, xmm2 ; xmm4 = data5 = (05 15 25 35 45 55 65 75) psubw xmm7, xmm0 ; xmm7 = data3 = (03 13 23 33 43 53 63 73) psraw xmm4, (PASS1_BITS + 3) ; descale psraw xmm7, (PASS1_BITS + 3) ; descale movdqa xmm2, [rel PB_CENTERJSAMP] ; xmm2 = [rel PB_CENTERJSAMP] packsswb xmm5, xmm6 ; xmm5 = (02 12 22 32 42 52 62 72 04 14 24 34 44 54 64 74) packsswb xmm7, xmm4 ; xmm7 = (03 13 23 33 43 53 63 73 05 15 25 35 45 55 65 75) paddb xmm1, xmm2 paddb xmm3, xmm2 paddb xmm5, xmm2 paddb xmm7, xmm2 ; transpose coefficients(phase 1) movdqa xmm0, xmm1 punpcklbw xmm1, xmm3 ; xmm1 = (00 01 10 11 20 21 30 31 40 41 50 51 60 61 70 71) punpckhbw xmm0, xmm3 ; xmm0 = (06 07 16 17 26 27 36 37 46 47 56 57 66 67 76 77) movdqa xmm6, xmm5 punpcklbw xmm5, xmm7 ; xmm5 = (02 03 12 13 22 23 32 33 42 43 52 53 62 63 72 73) punpckhbw xmm6, xmm7 ; xmm6 = (04 05 14 15 24 25 34 35 44 45 54 55 64 65 74 75) ; transpose coefficients(phase 2) movdqa xmm4, xmm1 punpcklwd xmm1, xmm5 ; xmm1 = (00 01 02 03 10 11 12 13 20 21 22 23 30 31 32 33) punpckhwd xmm4, xmm5 ; xmm4 = (40 41 42 43 50 51 52 53 60 61 62 63 70 71 72 73) movdqa xmm2, xmm6 punpcklwd xmm6, xmm0 ; xmm6 = (04 05 06 07 14 15 16 17 24 25 26 27 34 35 36 37) punpckhwd xmm2, xmm0 ; xmm2 = (44 45 46 47 54 55 56 57 64 65 66 67 74 75 76 77) ; transpose coefficients(phase 3) movdqa xmm3, xmm1 punpckldq xmm1, xmm6 ; xmm1 = (00 01 02 03 04 05 06 07 10 11 12 13 14 15 16 17) punpckhdq xmm3, xmm6 ; xmm3 = (20 21 22 23 24 25 26 27 30 31 32 33 34 35 36 37) movdqa xmm7, xmm4 punpckldq xmm4, xmm2 ; xmm4 = (40 41 42 43 44 45 46 47 50 51 52 53 54 55 56 57) punpckhdq xmm7, xmm2 ; xmm7 = (60 61 62 63 64 65 66 67 70 71 72 73 74 75 76 77) pshufd xmm5, xmm1, 0x4E ; xmm5 = (10 11 12 13 14 15 16 17 00 01 02 03 04 05 06 07) pshufd xmm0, xmm3, 0x4E ; xmm0 = (30 31 32 33 34 35 36 37 20 21 22 23 24 25 26 27) pshufd xmm6, xmm4, 0x4E ; xmm6 = (50 51 52 53 54 55 56 57 40 41 42 43 44 45 46 47) pshufd xmm2, xmm7, 0x4E ; xmm2 = (70 71 72 73 74 75 76 77 60 61 62 63 64 65 66 67) mov rdxp, JSAMPROW [rdi + 0 * SIZEOF_JSAMPROW] mov rsip, JSAMPROW [rdi + 2 * SIZEOF_JSAMPROW] movq XMM_MMWORD [rdx + rax * SIZEOF_JSAMPLE], xmm1 movq XMM_MMWORD [rsi + rax * SIZEOF_JSAMPLE], xmm3 mov rdxp, JSAMPROW [rdi + 4 * SIZEOF_JSAMPROW] mov rsip, JSAMPROW [rdi + 6 * SIZEOF_JSAMPROW] movq XMM_MMWORD [rdx + rax * SIZEOF_JSAMPLE], xmm4 movq XMM_MMWORD [rsi + rax * SIZEOF_JSAMPLE], xmm7 mov rdxp, JSAMPROW [rdi + 1 * SIZEOF_JSAMPROW] mov rsip, JSAMPROW [rdi + 3 * SIZEOF_JSAMPROW] movq XMM_MMWORD [rdx + rax * SIZEOF_JSAMPLE], xmm5 movq XMM_MMWORD [rsi + rax * SIZEOF_JSAMPLE], xmm0 mov rdxp, JSAMPROW [rdi + 5 * SIZEOF_JSAMPROW] mov rsip, JSAMPROW [rdi + 7 * SIZEOF_JSAMPROW] movq XMM_MMWORD [rdx + rax * SIZEOF_JSAMPLE], xmm6 movq XMM_MMWORD [rsi + rax * SIZEOF_JSAMPLE], xmm2 UNCOLLECT_ARGS 4 lea rsp, [rbp - 8] pop r15 pop rbp ret ret ; For some reason, the OS X linker does not honor the request to align the ; segment unless we do this. align 32