>From 210 cycles to 87 on penrynn.
Unrolling and not storing mask both save some cycles.
---
libavcodec/x86/sbrdsp.asm | 21 +++++++++++++++++++++
libavcodec/x86/sbrdsp_init.c | 2 ++
2 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/libavcodec/x86/sbrdsp.asm b/libavcodec/x86/sbrdsp.asm
index aff6879..49dd78c 100644
--- a/libavcodec/x86/sbrdsp.asm
+++ b/libavcodec/x86/sbrdsp.asm
@@ -206,6 +206,26 @@ cglobal sbr_sum64x5, 1,2,4,z
jne .loop
REP_RET
+cglobal sbr_neg_odd_64, 1,2,4,z
+ lea r1q, [zq+256]
+.loop:
+ mova m0, [zq+ 0]
+ mova m1, [zq+16]
+ mova m2, [zq+32]
+ mova m3, [zq+48]
+ xorps m0, [ps_mask2]
+ xorps m1, [ps_mask2]
+ xorps m2, [ps_mask2]
+ xorps m3, [ps_mask2]
+ mova [zq+ 0], m0
+ mova [zq+16], m1
+ mova [zq+32], m2
+ mova [zq+48], m3
+ add zq, 64
+ cmp zq, r1q
+ jne .loop
+ REP_RET
+
cglobal sbr_qmf_post_shuffle, 2,3,3,W,z
lea r2q, [zq + (64-4)*4]
.loop:
@@ -266,3 +286,4 @@ cglobal sbr_qmf_deint_neg, 2,3,4,v,src,vrev
sub srcq, 32
cmp vq, vrevq
jl .loop
+ REP_RET
diff --git a/libavcodec/x86/sbrdsp_init.c b/libavcodec/x86/sbrdsp_init.c
index e70b970..1ac64aa 100644
--- a/libavcodec/x86/sbrdsp_init.c
+++ b/libavcodec/x86/sbrdsp_init.c
@@ -31,6 +31,7 @@ void ff_sbr_hf_gen_sse(float (*X_high)[2], const float
(*X_low)[2],
const float alpha0[2], const float alpha1[2],
float bw, int start, int end);
void ff_sbr_sum64x5_sse(float *z);
+void ff_sbr_neg_odd_64_sse(float *z);
void ff_sbr_qmf_post_shuffle_sse(float W[32][2], const float *z);
void ff_sbr_qmf_pre_shuffle_sse(float *z);
void ff_sbr_qmf_deint_neg_sse(float *v, const float *src);
@@ -44,6 +45,7 @@ void ff_sbrdsp_init_x86(SBRDSPContext *s)
s->hf_g_filt = ff_sbr_hf_g_filt_sse;
s->hf_gen = ff_sbr_hf_gen_sse;
s->sum64x5 = ff_sbr_sum64x5_sse;
+ s->neg_odd_64 = ff_sbr_neg_odd_64_sse;
s->qmf_post_shuffle = ff_sbr_qmf_post_shuffle_sse;
s->qmf_pre_shuffle = ff_sbr_qmf_pre_shuffle_sse;
s->qmf_deint_neg = ff_sbr_qmf_deint_neg_sse;
--
1.7.7.msysgit.0
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