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authorMichael Niedermayer <michaelni@gmx.at>2012-12-07 23:59:20 +0100
committerMichael Niedermayer <michaelni@gmx.at>2012-12-08 17:30:11 +0100
commit0110108a7c2f3ccdd2c80f1a8923cf53d990695a (patch)
tree2ec2089f9f25cb520b1d5ea2acf4b5a541999aa9
parent7f154bd54f27b46ed823dfe0beedb688edd43492 (diff)
downloadffmpeg-0110108a7c2f3ccdd2c80f1a8923cf53d990695a.tar.gz
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>
-rw-r--r--libavcodec/x86/sbrdsp.asm39
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