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vp9: split pre-load of 11585x2 out of 1d idct macro.

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This allows us to load it only once, instead of twice, in this function.
This commit is contained in:
Ronald S. Bultje 2013-12-02 08:03:04 -05:00
parent f9a0d4c6e0
commit b2045c44a9
1 changed files with 3 additions and 3 deletions
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6
libavcodec/x86/vp9itxfm.asm
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@ -91,9 +91,8 @@ SECTION .text
%macro VP9_IDCT4_1D 0
SUMSUB_BA w, 2, 0, 4 ; m2=IN(0)+IN(2) m0=IN(0)-IN(2)
mova m4, [pw_11585x2]
pmulhrsw m2, m4 ; m2=t0
pmulhrsw m0, m4 ; m0=t1
pmulhrsw m2, m6 ; m2=t0
pmulhrsw m0, m6 ; m0=t1
VP9_UNPACK_MULSUB_2W_4X 1, 3, 15137, 6270, m7, 4, 5 ; m1=t2, m3=t3
VP9_IDCT4_1D_FINALIZE
%endmacro
@ -162,6 +161,7 @@ cglobal vp9_idct_idct_4x4_add, 4,4,0, dst, stride, block, eob
mova m1, [blockq+ 8]
mova m2, [blockq+16]
mova m3, [blockq+24]
mova m6, [pw_11585x2]
mova m7, [pd_8192] ; rounding
VP9_IDCT4_1D
TRANSPOSE4x4W 0, 1, 2, 3, 4