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Diffstat (limited to '')
-rw-r--r-- | media/ffvpx/libavutil/x86/lls.asm | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/media/ffvpx/libavutil/x86/lls.asm b/media/ffvpx/libavutil/x86/lls.asm new file mode 100644 index 0000000000..e8141e6c4f --- /dev/null +++ b/media/ffvpx/libavutil/x86/lls.asm @@ -0,0 +1,290 @@ +;****************************************************************************** +;* linear least squares model +;* +;* Copyright (c) 2013 Loren Merritt +;* +;* This file is part of FFmpeg. +;* +;* FFmpeg is free software; you can redistribute it and/or +;* modify it under the terms of the GNU Lesser General Public +;* License as published by the Free Software Foundation; either +;* version 2.1 of the License, or (at your option) any later version. +;* +;* FFmpeg is distributed in the hope that it will be useful, +;* but WITHOUT ANY WARRANTY; without even the implied warranty of +;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +;* Lesser General Public License for more details. +;* +;* You should have received a copy of the GNU Lesser General Public +;* License along with FFmpeg; if not, write to the Free Software +;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +;****************************************************************************** + +%include "libavutil/x86/x86util.asm" + +SECTION .text + +%define MAX_VARS 32 +%define MAX_VARS_ALIGN (MAX_VARS+4) +%define COVAR_STRIDE MAX_VARS_ALIGN*8 +%define COVAR(x,y) [covarq + (x)*8 + (y)*COVAR_STRIDE] + +struc LLSModel + .covariance: resq MAX_VARS_ALIGN*MAX_VARS_ALIGN + .coeff: resq MAX_VARS*MAX_VARS + .variance: resq MAX_VARS + .indep_count: resd 1 +endstruc + +%macro ADDPD_MEM 2 +%if cpuflag(avx) + vaddpd %2, %2, %1 +%else + addpd %2, %1 +%endif + mova %1, %2 +%endmacro + +INIT_XMM sse2 +%define movdqa movaps +cglobal update_lls, 2,5,8, ctx, var, i, j, covar2 + %define covarq ctxq + mov id, [ctxq + LLSModel.indep_count] + lea varq, [varq + iq*8] + neg iq + mov covar2q, covarq +.loopi: + ; Compute all 3 pairwise products of a 2x2 block that lies on the diagonal + mova m1, [varq + iq*8] + mova m3, [varq + iq*8 + 16] + pshufd m4, m1, q1010 + pshufd m5, m1, q3232 + pshufd m6, m3, q1010 + pshufd m7, m3, q3232 + mulpd m0, m1, m4 + mulpd m1, m1, m5 + lea covarq, [covar2q + 16] + ADDPD_MEM COVAR(-2,0), m0 + ADDPD_MEM COVAR(-2,1), m1 + lea jq, [iq + 2] + cmp jd, -2 + jg .skip4x4 +.loop4x4: + ; Compute all 16 pairwise products of a 4x4 block + mulpd m0, m4, m3 + mulpd m1, m5, m3 + mulpd m2, m6, m3 + mulpd m3, m3, m7 + ADDPD_MEM COVAR(0,0), m0 + ADDPD_MEM COVAR(0,1), m1 + ADDPD_MEM COVAR(0,2), m2 + ADDPD_MEM COVAR(0,3), m3 + mova m3, [varq + jq*8 + 16] + mulpd m0, m4, m3 + mulpd m1, m5, m3 + mulpd m2, m6, m3 + mulpd m3, m3, m7 + ADDPD_MEM COVAR(2,0), m0 + ADDPD_MEM COVAR(2,1), m1 + ADDPD_MEM COVAR(2,2), m2 + ADDPD_MEM COVAR(2,3), m3 + mova m3, [varq + jq*8 + 32] + add covarq, 32 + add jq, 4 + cmp jd, -2 + jle .loop4x4 +.skip4x4: + test jd, jd + jg .skip2x4 + mulpd m4, m3 + mulpd m5, m3 + mulpd m6, m3 + mulpd m7, m3 + ADDPD_MEM COVAR(0,0), m4 + ADDPD_MEM COVAR(0,1), m5 + ADDPD_MEM COVAR(0,2), m6 + ADDPD_MEM COVAR(0,3), m7 +.skip2x4: + add iq, 4 + add covar2q, 4*COVAR_STRIDE+32 + cmp id, -2 + jle .loopi + test id, id + jg .ret + mov jq, iq + %define covarq covar2q +.loop2x1: + movsd m0, [varq + iq*8] + movlhps m0, m0 + mulpd m0, [varq + jq*8] + ADDPD_MEM COVAR(0,0), m0 + inc iq + add covarq, COVAR_STRIDE + test id, id + jle .loop2x1 +.ret: + RET + +%macro UPDATE_LLS 0 +cglobal update_lls, 3,6,8, ctx, var, count, i, j, count2 + %define covarq ctxq + mov countd, [ctxq + LLSModel.indep_count] + lea count2d, [countq-2] + xor id, id +.loopi: + ; Compute all 10 pairwise products of a 4x4 block that lies on the diagonal + mova ymm1, [varq + iq*8] + vbroadcastsd ymm4, [varq + iq*8] + vbroadcastsd ymm5, [varq + iq*8 + 8] + vbroadcastsd ymm6, [varq + iq*8 + 16] + vbroadcastsd ymm7, [varq + iq*8 + 24] + vextractf128 xmm3, ymm1, 1 +%if cpuflag(fma3) + mova ymm0, COVAR(iq ,0) + mova xmm2, COVAR(iq+2,2) + fmaddpd ymm0, ymm1, ymm4, ymm0 + fmaddpd xmm2, xmm3, xmm6, xmm2 + fmaddpd ymm1, ymm5, ymm1, COVAR(iq ,1) + fmaddpd xmm3, xmm7, xmm3, COVAR(iq+2,3) + mova COVAR(iq ,0), ymm0 + mova COVAR(iq ,1), ymm1 + mova COVAR(iq+2,2), xmm2 + mova COVAR(iq+2,3), xmm3 +%else + vmulpd ymm0, ymm1, ymm4 + vmulpd ymm1, ymm1, ymm5 + vmulpd xmm2, xmm3, xmm6 + vmulpd xmm3, xmm3, xmm7 + ADDPD_MEM COVAR(iq ,0), ymm0 + ADDPD_MEM COVAR(iq ,1), ymm1 + ADDPD_MEM COVAR(iq+2,2), xmm2 + ADDPD_MEM COVAR(iq+2,3), xmm3 +%endif ; cpuflag(fma3) + lea jd, [iq + 4] + cmp jd, count2d + jg .skip4x4 +.loop4x4: + ; Compute all 16 pairwise products of a 4x4 block + mova ymm3, [varq + jq*8] +%if cpuflag(fma3) + mova ymm0, COVAR(jq, 0) + mova ymm1, COVAR(jq, 1) + mova ymm2, COVAR(jq, 2) + fmaddpd ymm0, ymm3, ymm4, ymm0 + fmaddpd ymm1, ymm3, ymm5, ymm1 + fmaddpd ymm2, ymm3, ymm6, ymm2 + fmaddpd ymm3, ymm7, ymm3, COVAR(jq,3) + mova COVAR(jq, 0), ymm0 + mova COVAR(jq, 1), ymm1 + mova COVAR(jq, 2), ymm2 + mova COVAR(jq, 3), ymm3 +%else + vmulpd ymm0, ymm3, ymm4 + vmulpd ymm1, ymm3, ymm5 + vmulpd ymm2, ymm3, ymm6 + vmulpd ymm3, ymm3, ymm7 + ADDPD_MEM COVAR(jq,0), ymm0 + ADDPD_MEM COVAR(jq,1), ymm1 + ADDPD_MEM COVAR(jq,2), ymm2 + ADDPD_MEM COVAR(jq,3), ymm3 +%endif ; cpuflag(fma3) + add jd, 4 + cmp jd, count2d + jle .loop4x4 +.skip4x4: + cmp jd, countd + jg .skip2x4 + mova xmm3, [varq + jq*8] +%if cpuflag(fma3) + mova xmm0, COVAR(jq, 0) + mova xmm1, COVAR(jq, 1) + mova xmm2, COVAR(jq, 2) + fmaddpd xmm0, xmm3, xmm4, xmm0 + fmaddpd xmm1, xmm3, xmm5, xmm1 + fmaddpd xmm2, xmm3, xmm6, xmm2 + fmaddpd xmm3, xmm7, xmm3, COVAR(jq,3) + mova COVAR(jq, 0), xmm0 + mova COVAR(jq, 1), xmm1 + mova COVAR(jq, 2), xmm2 + mova COVAR(jq, 3), xmm3 +%else + vmulpd xmm0, xmm3, xmm4 + vmulpd xmm1, xmm3, xmm5 + vmulpd xmm2, xmm3, xmm6 + vmulpd xmm3, xmm3, xmm7 + ADDPD_MEM COVAR(jq,0), xmm0 + ADDPD_MEM COVAR(jq,1), xmm1 + ADDPD_MEM COVAR(jq,2), xmm2 + ADDPD_MEM COVAR(jq,3), xmm3 +%endif ; cpuflag(fma3) +.skip2x4: + add id, 4 + add covarq, 4*COVAR_STRIDE + cmp id, count2d + jle .loopi + cmp id, countd + jg .ret + mov jd, id +.loop2x1: + vmovddup xmm0, [varq + iq*8] +%if cpuflag(fma3) + mova xmm1, [varq + jq*8] + fmaddpd xmm0, xmm1, xmm0, COVAR(jq,0) + mova COVAR(jq,0), xmm0 +%else + vmulpd xmm0, [varq + jq*8] + ADDPD_MEM COVAR(jq,0), xmm0 +%endif ; cpuflag(fma3) + inc id + add covarq, COVAR_STRIDE + cmp id, countd + jle .loop2x1 +.ret: + RET +%endmacro ; UPDATE_LLS + +%if HAVE_AVX_EXTERNAL +INIT_YMM avx +UPDATE_LLS +%endif +%if HAVE_FMA3_EXTERNAL +INIT_YMM fma3 +UPDATE_LLS +%endif + +INIT_XMM sse2 +cglobal evaluate_lls, 3,4,2, ctx, var, order, i + ; This function is often called on the same buffer as update_lls, but with + ; an offset. They can't both be aligned. + ; Load halves rather than movu to avoid store-forwarding stalls, since the + ; input was initialized immediately prior to this function using scalar math. + %define coefsq ctxq + mov id, orderd + imul orderd, MAX_VARS + lea coefsq, [ctxq + LLSModel.coeff + orderq*8] + movsd m0, [varq] + movhpd m0, [varq + 8] + mulpd m0, [coefsq] + lea coefsq, [coefsq + iq*8] + lea varq, [varq + iq*8] + neg iq + add iq, 2 +.loop: + movsd m1, [varq + iq*8] + movhpd m1, [varq + iq*8 + 8] + mulpd m1, [coefsq + iq*8] + addpd m0, m1 + add iq, 2 + jl .loop + jg .skip1 + movsd m1, [varq + iq*8] + mulsd m1, [coefsq + iq*8] + addpd m0, m1 +.skip1: + movhlps m1, m0 + addsd m0, m1 +%if ARCH_X86_32 + movsd r0m, m0 + fld qword r0m +%endif + RET |