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FFmpeg/libavcodec/x86/qpeldsp.asm
Lynne bbe95f7353
x86: replace explicit REP_RETs with RETs 
From x86inc:
> On AMD cpus <=K10, an ordinary ret is slow if it immediately follows either
> a branch or a branch target. So switch to a 2-byte form of ret in that case.
> We can automatically detect "follows a branch", but not a branch target.
> (SSSE3 is a sufficient condition to know that your cpu doesn't have this problem.)

x86inc can automatically determine whether to use REP_RET rather than
REP in most of these cases, so impact is minimal. Additionally, a few
REP_RETs were used unnecessary, despite the return being nowhere near a
branch.

The only CPUs affected were AMD K10s, made between 2007 and 2011, 16
years ago and 12 years ago, respectively.

In the future, everyone involved with x86inc should consider dropping
REP_RETs altogether.
2023-02-01 04:23:55 +01:00

559 lines
14 KiB
NASM
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;******************************************************************************
;* mpeg4 qpel
;* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
;* Copyright (c) 2008 Loren Merritt
;* Copyright (c) 2013 Daniel Kang
;*
;* This file is part of FFmpeg.
;*
;* FFmpeg is free software; you can redistribute it and/or
;* modify it under the terms of the GNU Lesser General Public
;* License as published by the Free Software Foundation; either
;* version 2.1 of the License, or (at your option) any later version.
;*
;* FFmpeg is distributed in the hope that it will be useful,
;* but WITHOUT ANY WARRANTY; without even the implied warranty of
;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;* Lesser General Public License for more details.
;*
;* You should have received a copy of the GNU Lesser General Public
;* License along with FFmpeg; if not, write to the Free Software
;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************
%include "libavutil/x86/x86util.asm"
SECTION_RODATA
cextern pb_1
cextern pw_3
cextern pw_15
cextern pw_16
cextern pw_20
SECTION .text
; void ff_put_no_rnd_pixels8_l2(uint8_t *dst, uint8_t *src1, uint8_t *src2, int dstStride, int src1Stride, int h)
%macro PUT_NO_RND_PIXELS8_L2 0
cglobal put_no_rnd_pixels8_l2, 6,6
movsxdifnidn r4, r4d
movsxdifnidn r3, r3d
pcmpeqb m6, m6
test r5d, 1
je .loop
mova m0, [r1]
mova m1, [r2]
add r1, r4
add r2, 8
pxor m0, m6
pxor m1, m6
PAVGB m0, m1
pxor m0, m6
mova [r0], m0
add r0, r3
dec r5d
.loop:
mova m0, [r1]
add r1, r4
mova m1, [r1]
add r1, r4
mova m2, [r2]
mova m3, [r2+8]
pxor m0, m6
pxor m1, m6
pxor m2, m6
pxor m3, m6
PAVGB m0, m2
PAVGB m1, m3
pxor m0, m6
pxor m1, m6
mova [r0], m0
add r0, r3
mova [r0], m1
add r0, r3
mova m0, [r1]
add r1, r4
mova m1, [r1]
add r1, r4
mova m2, [r2+16]
mova m3, [r2+24]
pxor m0, m6
pxor m1, m6
pxor m2, m6
pxor m3, m6
PAVGB m0, m2
PAVGB m1, m3
pxor m0, m6
pxor m1, m6
mova [r0], m0
add r0, r3
mova [r0], m1
add r0, r3
add r2, 32
sub r5d, 4
jne .loop
RET
%endmacro
INIT_MMX mmxext
PUT_NO_RND_PIXELS8_L2
; void ff_put_no_rnd_pixels16_l2(uint8_t *dst, uint8_t *src1, uint8_t *src2, int dstStride, int src1Stride, int h)
%macro PUT_NO_RND_PIXELS16_l2 0
cglobal put_no_rnd_pixels16_l2, 6,6
movsxdifnidn r3, r3d
movsxdifnidn r4, r4d
pcmpeqb m6, m6
test r5d, 1
je .loop
mova m0, [r1]
mova m1, [r1+8]
mova m2, [r2]
mova m3, [r2+8]
pxor m0, m6
pxor m1, m6
pxor m2, m6
pxor m3, m6
PAVGB m0, m2
PAVGB m1, m3
pxor m0, m6
pxor m1, m6
add r1, r4
add r2, 16
mova [r0], m0
mova [r0+8], m1
add r0, r3
dec r5d
.loop:
mova m0, [r1]
mova m1, [r1+8]
add r1, r4
mova m2, [r2]
mova m3, [r2+8]
pxor m0, m6
pxor m1, m6
pxor m2, m6
pxor m3, m6
PAVGB m0, m2
PAVGB m1, m3
pxor m0, m6
pxor m1, m6
mova [r0], m0
mova [r0+8], m1
add r0, r3
mova m0, [r1]
mova m1, [r1+8]
add r1, r4
mova m2, [r2+16]
mova m3, [r2+24]
pxor m0, m6
pxor m1, m6
pxor m2, m6
pxor m3, m6
PAVGB m0, m2
PAVGB m1, m3
pxor m0, m6
pxor m1, m6
mova [r0], m0
mova [r0+8], m1
add r0, r3
add r2, 32
sub r5d, 2
jne .loop
RET
%endmacro
INIT_MMX mmxext
PUT_NO_RND_PIXELS16_l2
%macro MPEG4_QPEL16_H_LOWPASS 1
cglobal %1_mpeg4_qpel16_h_lowpass, 5, 5, 0, 16
movsxdifnidn r2, r2d
movsxdifnidn r3, r3d
pxor m7, m7
.loop:
mova m0, [r1]
mova m1, m0
mova m2, m0
punpcklbw m0, m7
punpckhbw m1, m7
pshufw m5, m0, 0x90
pshufw m6, m0, 0x41
mova m3, m2
mova m4, m2
psllq m2, 8
psllq m3, 16
psllq m4, 24
punpckhbw m2, m7
punpckhbw m3, m7
punpckhbw m4, m7
paddw m5, m3
paddw m6, m2
paddw m5, m5
psubw m6, m5
pshufw m5, m0, 6
pmullw m6, [pw_3]
paddw m0, m4
paddw m5, m1
pmullw m0, [pw_20]
psubw m0, m5
paddw m6, [PW_ROUND]
paddw m0, m6
psraw m0, 5
mova [rsp+8], m0
mova m0, [r1+5]
mova m5, m0
mova m6, m0
psrlq m0, 8
psrlq m5, 16
punpcklbw m0, m7
punpcklbw m5, m7
paddw m2, m0
paddw m3, m5
paddw m2, m2
psubw m3, m2
mova m2, m6
psrlq m6, 24
punpcklbw m2, m7
punpcklbw m6, m7
pmullw m3, [pw_3]
paddw m1, m2
paddw m4, m6
pmullw m1, [pw_20]
psubw m3, m4
paddw m1, [PW_ROUND]
paddw m3, m1
psraw m3, 5
mova m1, [rsp+8]
packuswb m1, m3
OP_MOV [r0], m1, m4
mova m1, [r1+9]
mova m4, m1
mova m3, m1
psrlq m1, 8
psrlq m4, 16
punpcklbw m1, m7
punpcklbw m4, m7
paddw m5, m1
paddw m0, m4
paddw m5, m5
psubw m0, m5
mova m5, m3
psrlq m3, 24
pmullw m0, [pw_3]
punpcklbw m3, m7
paddw m2, m3
psubw m0, m2
mova m2, m5
punpcklbw m2, m7
punpckhbw m5, m7
paddw m6, m2
pmullw m6, [pw_20]
paddw m0, [PW_ROUND]
paddw m0, m6
psraw m0, 5
paddw m3, m5
pshufw m6, m5, 0xf9
paddw m6, m4
pshufw m4, m5, 0xbe
pshufw m5, m5, 0x6f
paddw m4, m1
paddw m5, m2
paddw m6, m6
psubw m4, m6
pmullw m3, [pw_20]
pmullw m4, [pw_3]
psubw m3, m5
paddw m4, [PW_ROUND]
paddw m4, m3
psraw m4, 5
packuswb m0, m4
OP_MOV [r0+8], m0, m4
add r1, r3
add r0, r2
dec r4d
jne .loop
RET
%endmacro
%macro PUT_OP 2-3
mova %1, %2
%endmacro
%macro AVG_OP 2-3
mova %3, %1
pavgb %2, %3
mova %1, %2
%endmacro
INIT_MMX mmxext
%define PW_ROUND pw_16
%define OP_MOV PUT_OP
MPEG4_QPEL16_H_LOWPASS put
%define PW_ROUND pw_16
%define OP_MOV AVG_OP
MPEG4_QPEL16_H_LOWPASS avg
%define PW_ROUND pw_15
%define OP_MOV PUT_OP
MPEG4_QPEL16_H_LOWPASS put_no_rnd
%macro MPEG4_QPEL8_H_LOWPASS 1
cglobal %1_mpeg4_qpel8_h_lowpass, 5, 5, 0, 8
movsxdifnidn r2, r2d
movsxdifnidn r3, r3d
pxor m7, m7
.loop:
mova m0, [r1]
mova m1, m0
mova m2, m0
punpcklbw m0, m7
punpckhbw m1, m7
pshufw m5, m0, 0x90
pshufw m6, m0, 0x41
mova m3, m2
mova m4, m2
psllq m2, 8
psllq m3, 16
psllq m4, 24
punpckhbw m2, m7
punpckhbw m3, m7
punpckhbw m4, m7
paddw m5, m3
paddw m6, m2
paddw m5, m5
psubw m6, m5
pshufw m5, m0, 0x6
pmullw m6, [pw_3]
paddw m0, m4
paddw m5, m1
pmullw m0, [pw_20]
psubw m0, m5
paddw m6, [PW_ROUND]
paddw m0, m6
psraw m0, 5
movh m5, [r1+5]
punpcklbw m5, m7
pshufw m6, m5, 0xf9
paddw m1, m5
paddw m2, m6
pshufw m6, m5, 0xbe
pshufw m5, m5, 0x6f
paddw m3, m6
paddw m4, m5
paddw m2, m2
psubw m3, m2
pmullw m1, [pw_20]
pmullw m3, [pw_3]
psubw m3, m4
paddw m1, [PW_ROUND]
paddw m3, m1
psraw m3, 5
packuswb m0, m3
OP_MOV [r0], m0, m4
add r1, r3
add r0, r2
dec r4d
jne .loop
RET
%endmacro
INIT_MMX mmxext
%define PW_ROUND pw_16
%define OP_MOV PUT_OP
MPEG4_QPEL8_H_LOWPASS put
%define PW_ROUND pw_16
%define OP_MOV AVG_OP
MPEG4_QPEL8_H_LOWPASS avg
%define PW_ROUND pw_15
%define OP_MOV PUT_OP
MPEG4_QPEL8_H_LOWPASS put_no_rnd
%macro QPEL_V_LOW 5
paddw m0, m1
mova m4, [pw_20]
pmullw m4, m0
mova m0, %4
mova m5, %1
paddw m5, m0
psubw m4, m5
mova m5, %2
mova m6, %3
paddw m5, m3
paddw m6, m2
paddw m6, m6
psubw m5, m6
pmullw m5, [pw_3]
paddw m4, [PW_ROUND]
paddw m5, m4
psraw m5, 5
packuswb m5, m5
OP_MOV %5, m5, m7
SWAP 0,1,2,3
%endmacro
%macro MPEG4_QPEL16_V_LOWPASS 1
cglobal %1_mpeg4_qpel16_v_lowpass, 4, 6, 0, 544
movsxdifnidn r2, r2d
movsxdifnidn r3, r3d
mov r4d, 17
mov r5, rsp
pxor m7, m7
.looph:
mova m0, [r1]
mova m1, [r1]
mova m2, [r1+8]
mova m3, [r1+8]
punpcklbw m0, m7
punpckhbw m1, m7
punpcklbw m2, m7
punpckhbw m3, m7
mova [r5], m0
mova [r5+0x88], m1
mova [r5+0x110], m2
mova [r5+0x198], m3
add r5, 8
add r1, r3
dec r4d
jne .looph
; NOTE: r1 CHANGES VALUES: r1 -> 4 - 14*dstStride
mov r4d, 4
mov r1, 4
neg r2
lea r1, [r1+r2*8]
lea r1, [r1+r2*4]
lea r1, [r1+r2*2]
neg r2
mov r5, rsp
.loopv:
pxor m7, m7
mova m0, [r5+ 0x0]
mova m1, [r5+ 0x8]
mova m2, [r5+0x10]
mova m3, [r5+0x18]
QPEL_V_LOW [r5+0x10], [r5+ 0x8], [r5+ 0x0], [r5+0x20], [r0]
QPEL_V_LOW [r5+ 0x8], [r5+ 0x0], [r5+ 0x0], [r5+0x28], [r0+r2]
lea r0, [r0+r2*2]
QPEL_V_LOW [r5+ 0x0], [r5+ 0x0], [r5+ 0x8], [r5+0x30], [r0]
QPEL_V_LOW [r5+ 0x0], [r5+ 0x8], [r5+0x10], [r5+0x38], [r0+r2]
lea r0, [r0+r2*2]
QPEL_V_LOW [r5+ 0x8], [r5+0x10], [r5+0x18], [r5+0x40], [r0]
QPEL_V_LOW [r5+0x10], [r5+0x18], [r5+0x20], [r5+0x48], [r0+r2]
lea r0, [r0+r2*2]
QPEL_V_LOW [r5+0x18], [r5+0x20], [r5+0x28], [r5+0x50], [r0]
QPEL_V_LOW [r5+0x20], [r5+0x28], [r5+0x30], [r5+0x58], [r0+r2]
lea r0, [r0+r2*2]
QPEL_V_LOW [r5+0x28], [r5+0x30], [r5+0x38], [r5+0x60], [r0]
QPEL_V_LOW [r5+0x30], [r5+0x38], [r5+0x40], [r5+0x68], [r0+r2]
lea r0, [r0+r2*2]
QPEL_V_LOW [r5+0x38], [r5+0x40], [r5+0x48], [r5+0x70], [r0]
QPEL_V_LOW [r5+0x40], [r5+0x48], [r5+0x50], [r5+0x78], [r0+r2]
lea r0, [r0+r2*2]
QPEL_V_LOW [r5+0x48], [r5+0x50], [r5+0x58], [r5+0x80], [r0]
QPEL_V_LOW [r5+0x50], [r5+0x58], [r5+0x60], [r5+0x80], [r0+r2]
lea r0, [r0+r2*2]
QPEL_V_LOW [r5+0x58], [r5+0x60], [r5+0x68], [r5+0x78], [r0]
QPEL_V_LOW [r5+0x60], [r5+0x68], [r5+0x70], [r5+0x70], [r0+r2]
add r5, 0x88
add r0, r1
dec r4d
jne .loopv
RET
%endmacro
%macro PUT_OPH 2-3
movh %1, %2
%endmacro
%macro AVG_OPH 2-3
movh %3, %1
pavgb %2, %3
movh %1, %2
%endmacro
INIT_MMX mmxext
%define PW_ROUND pw_16
%define OP_MOV PUT_OPH
MPEG4_QPEL16_V_LOWPASS put
%define PW_ROUND pw_16
%define OP_MOV AVG_OPH
MPEG4_QPEL16_V_LOWPASS avg
%define PW_ROUND pw_15
%define OP_MOV PUT_OPH
MPEG4_QPEL16_V_LOWPASS put_no_rnd
%macro MPEG4_QPEL8_V_LOWPASS 1
cglobal %1_mpeg4_qpel8_v_lowpass, 4, 6, 0, 288
movsxdifnidn r2, r2d
movsxdifnidn r3, r3d
mov r4d, 9
mov r5, rsp
pxor m7, m7
.looph:
mova m0, [r1]
mova m1, [r1]
punpcklbw m0, m7
punpckhbw m1, m7
mova [r5], m0
mova [r5+0x48], m1
add r5, 8
add r1, r3
dec r4d
jne .looph
; NOTE: r1 CHANGES VALUES: r1 -> 4 - 6*dstStride
mov r4d, 2
mov r1, 4
neg r2
lea r1, [r1+r2*4]
lea r1, [r1+r2*2]
neg r2
mov r5, rsp
.loopv:
pxor m7, m7
mova m0, [r5+ 0x0]
mova m1, [r5+ 0x8]
mova m2, [r5+0x10]
mova m3, [r5+0x18]
QPEL_V_LOW [r5+0x10], [r5+ 0x8], [r5+ 0x0], [r5+0x20], [r0]
QPEL_V_LOW [r5+ 0x8], [r5+ 0x0], [r5+ 0x0], [r5+0x28], [r0+r2]
lea r0, [r0+r2*2]
QPEL_V_LOW [r5+ 0x0], [r5+ 0x0], [r5+ 0x8], [r5+0x30], [r0]
QPEL_V_LOW [r5+ 0x0], [r5+ 0x8], [r5+0x10], [r5+0x38], [r0+r2]
lea r0, [r0+r2*2]
QPEL_V_LOW [r5+ 0x8], [r5+0x10], [r5+0x18], [r5+0x40], [r0]
QPEL_V_LOW [r5+0x10], [r5+0x18], [r5+0x20], [r5+0x40], [r0+r2]
lea r0, [r0+r2*2]
QPEL_V_LOW [r5+0x18], [r5+0x20], [r5+0x28], [r5+0x38], [r0]
QPEL_V_LOW [r5+0x20], [r5+0x28], [r5+0x30], [r5+0x30], [r0+r2]
add r5, 0x48
add r0, r1
dec r4d
jne .loopv
RET
%endmacro
INIT_MMX mmxext
%define PW_ROUND pw_16
%define OP_MOV PUT_OPH
MPEG4_QPEL8_V_LOWPASS put
%define PW_ROUND pw_16
%define OP_MOV AVG_OPH
MPEG4_QPEL8_V_LOWPASS avg
%define PW_ROUND pw_15
%define OP_MOV PUT_OPH
MPEG4_QPEL8_V_LOWPASS put_no_rnd
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