diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2012-12-07 23:59:20 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-12-08 17:30:11 +0100 |
| commit | 0110108a7c2f3ccdd2c80f1a8923cf53d990695a (patch) | |
| tree | 2ec2089f9f25cb520b1d5ea2acf4b5a541999aa9 /libavcodec | |
| parent | 7f154bd54f27b46ed823dfe0beedb688edd43492 (diff) | |
sbr_hf_gen_sse: Optimize code a bit more.
Core I7 (Sandy Bridge) 135 to 107 cycles
Core i5 (Arrandale) 162 to 142 (Thanks to Christophe Gisquet for testing)
Reviewed-by: Christophe Gisquet <christophe.gisquet@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/x86/sbrdsp.asm | 39 |
1 files changed, 18 insertions, 21 deletions
diff --git a/libavcodec/x86/sbrdsp.asm b/libavcodec/x86/sbrdsp.asm index b87da4a072..aaabf9f4aa 100644 --- a/libavcodec/x86/sbrdsp.asm +++ b/libavcodec/x86/sbrdsp.asm @@ -134,7 +134,6 @@ cglobal sbr_hf_gen, 4,4,8, X_high, X_low, alpha0, alpha1, BW, S, E mulps m2, bw ; (a1[0] a1[1])*bw*bw = (a0 a1) mova m3, m1 mova m4, m2 - mova m7, [ps_mask] ; Set pointers %if ARCH_X86_64 == 0 || WIN64 @@ -154,30 +153,28 @@ cglobal sbr_hf_gen, 4,4,8, X_high, X_low, alpha0, alpha1, BW, S, E shl start, 3 ; offset from num loops mova m0, [X_lowq + start] - movlhps m1, m1 ; (a2 a3 a2 a3) - movlhps m2, m2 ; (a0 a1 a0 a1) - shufps m3, m3, q0101 ; (a3 a2 a3 a2) - shufps m4, m4, q0101 ; (a1 a0 a1 a0) - xorps m3, m7 ; (-a3 a2 -a3 a2) - xorps m4, m7 ; (-a1 a0 -a1 a0) + shufps m3, m3, q1111 + shufps m4, m4, q1111 + xorps m3, [ps_mask] + shufps m1, m1, q0000 + shufps m2, m2, q0000 + xorps m4, [ps_mask] .loop2: - mova m5, m0 + movu m7, [X_lowq + start + 8] ; BbCc mova m6, m0 - shufps m0, m0, q2200 ; {Xl[-2][0],",Xl[-1][0],"} - shufps m5, m5, q3311 ; {Xl[-2][1],",Xl[-1][1],"} - mulps m0, m2 - mulps m5, m4 - mova m7, m6 - addps m5, m0 - mova m0, [X_lowq + start + 2*2*4] - shufps m6, m0, q0022 ; {Xl[-1][0],",Xl[0][0],"} - shufps m7, m0, q1133 ; {Xl[-1][1],",Xl[1][1],"} - mulps m6, m1 + mova m5, m7 + shufps m0, m0, q2301 ; aAbB + shufps m7, m7, q2301 ; bBcC + mulps m0, m4 mulps m7, m3 - addps m5, m6 + mulps m6, m2 + mulps m5, m1 + addps m7, m0 + mova m0, [X_lowq + start +16] ; CcDd addps m7, m0 - addps m5, m7 - mova [X_highq + start], m5 + addps m6, m5 + addps m7, m6 + mova [X_highq + start], m7 add start, 16 jnz .loop2 RET |