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mdct15: simplify the fft15 x86 SIMD 

Saves 1 gpr and 2 instructions and simplifies the macros a bit.

Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
This commit is contained in:
Rostislav Pehlivanov 2018-05-06 23:15:08 +01:00
parent 1b0e0578c2
commit a72d0fb973
1 changed files with 17 additions and 20 deletions
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37
libavcodec/x86/mdct15.asm
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@ -76,7 +76,7 @@ SECTION .text
addps m%3, m%3, m0 ; Finally offset with DCs
%endmacro
%macro BUTTERFLIES_DC 2 ; %1 - exptab_offset, %2 - out
%macro BUTTERFLIES_DC 1 ; %1 - exptab_offset
mulps xm0, xm9, [exptabq + %1 + 16*0]
mulps xm1, xm10, [exptabq + %1 + 16*1]
@ -86,10 +86,10 @@ SECTION .text
addps xm0, xm1
addps xm0, xm8
movsd [%2q], xm0
movsd [outq], xm0
%endmacro
%macro BUTTERFLIES_AC 2 ; exptab, exptab_offset, src1, src2, src3, out (uses m0-m3)
%macro BUTTERFLIES_AC 1 ; %1 - exptab_offset
mulps m0, m12, [exptabq + 64*0 + 0*mmsize + %1]
mulps m1, m12, [exptabq + 64*0 + 1*mmsize + %1]
mulps m2, m13, [exptabq + 64*1 + 0*mmsize + %1]
@ -104,15 +104,14 @@ SECTION .text
vextractf128 xm1, m0, 1
movlps [%2q + strideq*1], xm0
movhps [%2q + strideq*2], xm0
movlps [%2q + stride3q], xm1
movhps [%2q + strideq*4], xm1
movlps [outq + strideq*1], xm0
movhps [outq + strideq*2], xm0
movlps [outq + stride3q], xm1
movhps [outq + strideq*4], xm1
%endmacro
INIT_YMM avx
cglobal fft15, 4, 6, 14, out, in, exptab, stride, stride3, stride5
%define out0q inq
cglobal fft15, 4, 5, 14, out, in, exptab, stride, stride5
shl strideq, 3
movaps xm5, [exptabq + 480 + 16*0]
@ -123,22 +122,20 @@ cglobal fft15, 4, 6, 14, out, in, exptab, stride, stride3, stride5
FFT5 8, xm9, 12
FFT5 16, xm10, 13
%define stride3q inq
lea stride3q, [strideq + strideq*2]
lea stride5q, [strideq + strideq*4]
mov out0q, outq
BUTTERFLIES_DC (8*6 + 4*0)*2*4
BUTTERFLIES_AC (8*0 + 0*0)*2*4
BUTTERFLIES_DC (8*6 + 4*0)*2*4, out0
lea outq, [out0q + stride5q*1]
BUTTERFLIES_DC (8*6 + 4*1)*2*4, out
lea outq, [out0q + stride5q*2]
BUTTERFLIES_DC (8*6 + 4*2)*2*4, out
add outq, stride5q
BUTTERFLIES_DC (8*6 + 4*1)*2*4
BUTTERFLIES_AC (8*2 + 0*0)*2*4
BUTTERFLIES_AC (8*0)*2*4, out0
lea outq, [out0q + stride5q*1]
BUTTERFLIES_AC (8*2)*2*4, out
lea outq, [out0q + stride5q*2]
BUTTERFLIES_AC (8*4)*2*4, out
add outq, stride5q
BUTTERFLIES_DC (8*6 + 4*2)*2*4
BUTTERFLIES_AC (8*4 + 0*0)*2*4
RET