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x86/sbrdsp: Use different mem moves 

Before
2843 decicycles in ff_sbr_autocorrelate_sse3, 262086 runs, 58 skips

After
2693 decicycles in ff_sbr_autocorrelate_sse3, 262117 runs, 27 skips

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
Christophe Gisquet 2015-01-25 18:13:10 -03:00 committed by James Almer
parent 449b21bfab
commit 7aeafacfd0
1 changed files with 8 additions and 6 deletions
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14
libavcodec/x86/sbrdsp.asm
View File

@ -454,13 +454,15 @@ cglobal sbr_autocorrelate, 2,3,8,32, x, phi, cnt
neg cntq
%if cpuflag(sse3)
%define MOVH movsd
movddup m5, [xq+cntq]
%else
%define MOVH movlps
movlps m5, [xq+cntq]
movlhps m5, m5
%endif
movlps m7, [xq+cntq+8 ]
movlps m1, [xq+cntq+16]
MOVH m7, [xq+cntq+8 ]
MOVH m1, [xq+cntq+16]
shufps m7, m7, q0110
shufps m1, m1, q0110
mulps m3, m5, m7 ; x[0][0] * x[1][0], x[0][1] * x[1][1], x[0][0] * x[1][1], x[0][1] * x[1][0]
@ -470,7 +472,7 @@ cglobal sbr_autocorrelate, 2,3,8,32, x, phi, cnt
movaps [rsp+16], m4
add cntq, 8
movlps m2, [xq+cntq+16]
MOVH m2, [xq+cntq+16]
movlhps m7, m7
shufps m2, m2, q0110
mulps m6, m7, m1 ; real_sum1 = x[1][0] * x[2][0], x[1][1] * x[2][1]; imag_sum1 += x[1][0] * x[2][1], x[1][1] * x[2][0]
@ -481,7 +483,7 @@ cglobal sbr_autocorrelate, 2,3,8,32, x, phi, cnt
align 16
.loop:
add cntq, 8
movlps m0, [xq+cntq+16]
MOVH m0, [xq+cntq+16]
movlhps m1, m1
shufps m0, m0, q0110
mulps m3, m1, m2
@ -491,7 +493,7 @@ align 16
addps m5, m4 ; real_sum2 += x[i][0] * x[i + 2][0], x[i][1] * x[i + 2][1]; imag_sum2 += x[i][0] * x[i + 2][1], x[i][1] * x[i + 2][0];
addps m7, m1 ; real_sum0 += x[i][0] * x[i][0], x[i][1] * x[i][1];
add cntq, 8
movlps m1, [xq+cntq+16]
MOVH m1, [xq+cntq+16]
movlhps m2, m2
shufps m1, m1, q0110
mulps m3, m2, m0
@ -501,7 +503,7 @@ align 16
addps m5, m4 ; real_sum2 += x[i][0] * x[i + 2][0], x[i][1] * x[i + 2][1]; imag_sum2 += x[i][0] * x[i + 2][1], x[i][1] * x[i + 2][0];
addps m7, m2 ; real_sum0 += x[i][0] * x[i][0], x[i][1] * x[i][1];
add cntq, 8
movlps m2, [xq+cntq+16]
MOVH m2, [xq+cntq+16]
movlhps m0, m0
shufps m2, m2, q0110
mulps m3, m0, m1