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x86/opusdsp: replace loads with shuffles 

Has a slight speedup.
Can't be carried over to aarch64, since it has no shufps-like instruction.

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
Lynne 2019-04-24 12:19:48 +01:00 committed by James Almer
parent c2f305ca17
commit 4b7166c9d5
1 changed files with 3 additions and 6 deletions
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9
libavcodec/x86/opusdsp.asm
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@ -24,9 +24,6 @@ SECTION_RODATA
; 0.85..^1 0.85..^2 0.85..^3 0.85..^4
tab_st: dd 0x3f599a00, 0x3f38f671, 0x3f1d382a, 0x3f05a32f
tab_x0: dd 0x0, 0x3f599a00, 0x3f599a00, 0x3f599a00
tab_x1: dd 0x0, 0x0, 0x3f38f671, 0x3f38f671
tab_x2: dd 0x0, 0x0, 0x0, 0x3f1d382a
SECTION .text
@ -45,9 +42,9 @@ cglobal opus_deemphasis, 4, 4, 8, out, in, coeff, len
%endif
movaps m4, [tab_st]
movaps m5, [tab_x0]
movaps m6, [tab_x1]
movaps m7, [tab_x2]
VBROADCASTSS m5, m4
shufps m6, m4, m4, q1111
shufps m7, m4, m4, q2222
.loop:
movaps m1, [inq] ; x0, x1, x2, x3