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vp9/x86: 4x4 iadst SIMD (ssse3) variants.

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Cycle measurements for intra itxfm_4x4_add on ped1080p.webm:
idct_idct:    66 -> 67 cycles (noise measurement)
idct_iadst:  199 -> 79 cycles
iadst_idct:  165 -> 70 cycles
iadst_iadst: 183 -> 82 cycles
This commit is contained in:
Ronald S. Bultje
2014-01-20 15:30:22 -05:00
parent baf47020cd
commit d43efa68bd
2 changed files with 73 additions and 1 deletions
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69
libavcodec/x86/vp9itxfm.asm
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@@ -58,6 +58,13 @@ VP9_IDCT_COEFFS 8423, 14053
VP9_IDCT_COEFFS 13160, 9760
VP9_IDCT_COEFFS 2404, 16207
pw_5283_13377: times 4 dw 5283, 13377
pw_9929_13377: times 4 dw 9929, 13377
pw_15212_m13377: times 4 dw 15212, -13377
pw_15212_9929: times 4 dw 15212, 9929
pw_m5283_m15212: times 4 dw -5283, -15212
pw_13377x2: times 8 dw 13377*2
pd_8192: times 4 dd 8192
pw_2048: times 8 dw 2048
pw_1024: times 8 dw 1024
@@ -239,6 +246,68 @@ cglobal vp9_idct_idct_4x4_add, 4,4,0, dst, stride, block, eob
VP9_IDCT4_WRITEOUT
RET
;-------------------------------------------------------------------------------------------
; void vp9_iadst_iadst_4x4_add_<opt>(uint8_t *dst, ptrdiff_t stride, int16_t *block, int eob);
;-------------------------------------------------------------------------------------------
%macro VP9_IADST4_1D 0
movq2dq xmm0, m0
movq2dq xmm1, m1
movq2dq xmm2, m2
movq2dq xmm3, m3
paddw m3, m0
punpcklwd xmm0, xmm1
punpcklwd xmm2, xmm3
pmaddwd xmm1, xmm0, [pw_5283_13377]
pmaddwd xmm4, xmm0, [pw_9929_13377]
pmaddwd xmm0, [pw_15212_m13377]
pmaddwd xmm3, xmm2, [pw_15212_9929]
pmaddwd xmm2, [pw_m5283_m15212]
psubw m3, m2
paddd xmm0, xmm2
paddd xmm3, [pd_8192]
paddd xmm2, [pd_8192]
paddd xmm1, xmm3
paddd xmm0, xmm3
paddd xmm4, xmm2
psrad xmm1, 14
psrad xmm0, 14
psrad xmm4, 14
pmulhrsw m3, [pw_13377x2] ; out2
packssdw xmm0, xmm0
packssdw xmm1, xmm1
packssdw xmm4, xmm4
movdq2q m0, xmm0 ; out3
movdq2q m1, xmm1 ; out0
movdq2q m2, xmm4 ; out1
SWAP 0, 1, 2, 3
%endmacro
%macro IADST4_FN 5
INIT_MMX %5
cglobal vp9_%1_%3_4x4_add, 3, 3, 8, dst, stride, block, eob
mova m0, [blockq+ 0]
mova m1, [blockq+ 8]
mova m2, [blockq+16]
mova m3, [blockq+24]
mova m6, [pw_11585x2]
mova m7, [pd_8192] ; rounding
VP9_%2_1D
TRANSPOSE4x4W 0, 1, 2, 3, 4
VP9_%4_1D
pxor m4, m4 ; used for the block reset, and VP9_STORE_2X
mova [blockq+ 0], m4
mova [blockq+ 8], m4
mova [blockq+16], m4
mova [blockq+24], m4
VP9_IDCT4_WRITEOUT
RET
%endmacro
IADST4_FN idct, IDCT4, iadst, IADST4, ssse3
IADST4_FN iadst, IADST4, idct, IDCT4, ssse3
IADST4_FN iadst, IADST4, iadst, IADST4, ssse3
%if ARCH_X86_64 ; TODO: 32-bit? (32-bit limited to 8 xmm reg, we use more)
;-------------------------------------------------------------------------------------------