Le 11 décembre 2023 11:11:28 GMT+02:00, Anton Khirnov <an...@khirnov.net> a écrit : >Quoting Rémi Denis-Courmont (2023-12-08 18:46:51) >> +#if __riscv_xlen >= 64 >> +func ff_lpc_apply_welch_window_rvv, zve64d >> + vsetvli t0, zero, e64, m8, ta, ma >> + vid.v v0 >> + addi t2, a1, -1 >> + vfcvt.f.xu.v v0, v0 >> + li t3, 2 >> + fcvt.d.l ft2, t2 >> + srai t1, a1, 1 >> + fcvt.d.l ft3, t3 >> + li t4, 1 >> + fdiv.d ft0, ft3, ft2 # ft0 = c = 2. / (len - 1) >> + fcvt.d.l fa1, t4 # fa1 = 1. >> + fsub.d ft1, ft0, fa1 >> + vfrsub.vf v0, v0, ft1 # v0[i] = c - i - 1. >> +1: >> + vsetvli t0, t1, e64, m8, ta, ma >> + vfmul.vv v16, v0, v0 # no fused multipy-add as v0 is reused >> + sub t1, t1, t0 >> + vle32.v v8, (a0) >> + fcvt.d.l ft2, t0 >> + vfrsub.vf v16, v16, fa1 # v16 = 1. - w * w >> + sh2add a0, t0, a0 >> + vsetvli zero, zero, e32, m4, ta, ma >> + vfwcvt.f.x.v v24, v8 >> + vsetvli zero, zero, e64, m8, ta, ma >> + vfsub.vf v0, v0, ft2 # v0 -= vl >> + vfmul.vv v8, v24, v16 >> + vse64.v v8, (a2) >> + sh3add a2, t0, a2 >> + bnez t1, 1b >> + >> + andi t1, a1, 1 >> + beqz t1, 2f >> + >> + sd zero, (a2) >> + addi a0, a0, 4 >> + addi a2, a2, 8 >> +2: >> + vsetvli t0, zero, e64, m8, ta, ma >> + vid.v v0 >> + srai t1, a1, 1 >> + vfcvt.f.xu.v v0, v0 >> + fcvt.d.l ft1, t1 >> + fsub.d ft1, ft0, ft1 # ft1 = c - (len / 2) >> + vfadd.vf v0, v0, ft1 # v0[i] = c - (len / 2) + i >> +3: >> + vsetvli t0, t1, e64, m8, ta, ma >> + vfmul.vv v16, v0, v0 >> + sub t1, t1, t0 >> + vle32.v v8, (a0) >> + fcvt.d.l ft2, t0 >> + vfrsub.vf v16, v16, fa1 # v16 = 1. - w * w >> + sh2add a0, t0, a0 >> + vsetvli zero, zero, e32, m4, ta, ma >> + vfwcvt.f.x.v v24, v8 >> + vsetvli zero, zero, e64, m8, ta, ma >> + vfadd.vf v0, v0, ft2 # v0 += vl >> + vfmul.vv v8, v24, v16 >> + vse64.v v8, (a2) >> + sh3add a2, t0, a2 >> + bnez t1, 3b > >I think it'd look a lot less like base64 < /dev/random if you vertically >aligned the first operands.
They are aligned to the 17th column. Problem is that quite a few vector mnemonics are larger than 7 characters. > >-- >Anton Khirnov >_______________________________________________ >ffmpeg-devel mailing list >ffmpeg-devel@ffmpeg.org >https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > >To unsubscribe, visit link above, or email >ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".