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vpx/vp8/encoder/x86/quantize_sse2.asm
Johann 8edaf6e2f2 use asm_offsets with vp8_regular_quantize_b_sse2 
remove helper function and avoid shadowing all the arguments to the
stack on 64bit systems

when running with --good --cpu-used=0:
~2% on linux x86 and x86_64
~2% on win32 x86 msys and visual studio
more on darwin10 x86_64
significantly more on
x86_64-win64-vs9

Change-Id: Ib7be12edf511fbf2922f191afd5b33b19a0c4ae6
2011-03-24 13:34:48 -04:00

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;
; Copyright (c) 2010 The WebM project authors. All Rights Reserved.
;
; Use of this source code is governed by a BSD-style license and patent
; grant that can be found in the LICENSE file in the root of the source
; tree. All contributing project authors may be found in the AUTHORS
; file in the root of the source tree.
;
%include "vpx_ports/x86_abi_support.asm"
%include "asm_enc_offsets.asm"
; void vp8_regular_quantize_b_sse2 | arg
; (BLOCK *b, | 0
; BLOCKD *d) | 1
global sym(vp8_regular_quantize_b_sse2)
sym(vp8_regular_quantize_b_sse2):
push rbp
mov rbp, rsp
SAVE_XMM
GET_GOT rbx
push rsi
%if ABI_IS_32BIT
push rdi
%else
%ifidn __OUTPUT_FORMAT__,x64
push rdi
%endif
%endif
ALIGN_STACK 16, rax
%define BLOCKD_d 0 ; 8
%define zrun_zbin_boost 8 ; 8
%define abs_minus_zbin 16 ; 32
%define temp_qcoeff 48 ; 32
%define qcoeff 80 ; 32
%define stack_size 112
sub rsp, stack_size
; end prolog
%if ABI_IS_32BIT
mov rdi, arg(0)
%else
%ifidn __OUTPUT_FORMAT__,x64
mov rdi, rcx ; BLOCK *b
mov [rsp + BLOCKD_d], rdx
%else
;mov rdi, rdi ; BLOCK *b
mov [rsp + BLOCKD_d], rsi
%endif
%endif
mov rdx, [rdi + vp8_block_coeff] ; coeff_ptr
mov rcx, [rdi + vp8_block_zbin] ; zbin_ptr
movd xmm7, [rdi + vp8_block_zbin_extra] ; zbin_oq_value
; z
movdqa xmm0, [rdx]
movdqa xmm4, [rdx + 16]
mov rdx, [rdi + vp8_block_round] ; round_ptr
pshuflw xmm7, xmm7, 0
punpcklwd xmm7, xmm7 ; duplicated zbin_oq_value
movdqa xmm1, xmm0
movdqa xmm5, xmm4
; sz
psraw xmm0, 15
psraw xmm4, 15
; (z ^ sz)
pxor xmm1, xmm0
pxor xmm5, xmm4
; x = abs(z)
psubw xmm1, xmm0
psubw xmm5, xmm4
movdqa xmm2, [rcx]
movdqa xmm3, [rcx + 16]
mov rcx, [rdi + vp8_block_quant] ; quant_ptr
; *zbin_ptr + zbin_oq_value
paddw xmm2, xmm7
paddw xmm3, xmm7
; x - (*zbin_ptr + zbin_oq_value)
psubw xmm1, xmm2
psubw xmm5, xmm3
movdqa [rsp + abs_minus_zbin], xmm1
movdqa [rsp + abs_minus_zbin + 16], xmm5
; add (zbin_ptr + zbin_oq_value) back
paddw xmm1, xmm2
paddw xmm5, xmm3
movdqa xmm2, [rdx]
movdqa xmm6, [rdx + 16]
movdqa xmm3, [rcx]
movdqa xmm7, [rcx + 16]
; x + round
paddw xmm1, xmm2
paddw xmm5, xmm6
; y = x * quant_ptr >> 16
pmulhw xmm3, xmm1
pmulhw xmm7, xmm5
; y += x
paddw xmm1, xmm3
paddw xmm5, xmm7
movdqa [rsp + temp_qcoeff], xmm1
movdqa [rsp + temp_qcoeff + 16], xmm5
pxor xmm6, xmm6
; zero qcoeff
movdqa [rsp + qcoeff], xmm6
movdqa [rsp + qcoeff + 16], xmm6
mov rsi, [rdi + vp8_block_zrun_zbin_boost] ; zbin_boost_ptr
mov rax, [rdi + vp8_block_quant_shift] ; quant_shift_ptr
mov [rsp + zrun_zbin_boost], rsi
%macro ZIGZAG_LOOP 1
movsx edx, WORD PTR[GLOBAL(zig_zag) + (%1 * 2)] ; rc
; x
movsx ecx, WORD PTR[rsp + abs_minus_zbin + rdx *2]
; if (x >= zbin)
sub cx, WORD PTR[rsi] ; x - zbin
lea rsi, [rsi + 2] ; zbin_boost_ptr++
jl rq_zigzag_loop_%1 ; x < zbin
movsx edi, WORD PTR[rsp + temp_qcoeff + rdx *2]
; downshift by quant_shift[rdx]
movsx ecx, WORD PTR[rax + rdx*2] ; quant_shift_ptr[rc]
sar edi, cl ; also sets Z bit
je rq_zigzag_loop_%1 ; !y
mov WORD PTR[rsp + qcoeff + rdx*2], di ;qcoeff_ptr[rc] = temp_qcoeff[rc]
mov rsi, [rsp + zrun_zbin_boost] ; reset to b->zrun_zbin_boost
rq_zigzag_loop_%1:
%endmacro
ZIGZAG_LOOP 0
ZIGZAG_LOOP 1
ZIGZAG_LOOP 2
ZIGZAG_LOOP 3
ZIGZAG_LOOP 4
ZIGZAG_LOOP 5
ZIGZAG_LOOP 6
ZIGZAG_LOOP 7
ZIGZAG_LOOP 8
ZIGZAG_LOOP 9
ZIGZAG_LOOP 10
ZIGZAG_LOOP 11
ZIGZAG_LOOP 12
ZIGZAG_LOOP 13
ZIGZAG_LOOP 14
ZIGZAG_LOOP 15
movdqa xmm2, [rsp + qcoeff]
movdqa xmm3, [rsp + qcoeff + 16]
%if ABI_IS_32BIT
mov rdi, arg(1)
%else
mov rdi, [rsp + BLOCKD_d]
%endif
mov rcx, [rdi + vp8_blockd_dequant] ; dequant_ptr
mov rsi, [rdi + vp8_blockd_dqcoeff] ; dqcoeff_ptr
; y ^ sz
pxor xmm2, xmm0
pxor xmm3, xmm4
; x = (y ^ sz) - sz
psubw xmm2, xmm0
psubw xmm3, xmm4
; dequant
movdqa xmm0, [rcx]
movdqa xmm1, [rcx + 16]
mov rcx, [rdi + vp8_blockd_qcoeff] ; qcoeff_ptr
pmullw xmm0, xmm2
pmullw xmm1, xmm3
movdqa [rcx], xmm2 ; store qcoeff
movdqa [rcx + 16], xmm3
movdqa [rsi], xmm0 ; store dqcoeff
movdqa [rsi + 16], xmm1
; select the last value (in zig_zag order) for EOB
pcmpeqw xmm2, xmm6
pcmpeqw xmm3, xmm6
; !
pcmpeqw xmm6, xmm6
pxor xmm2, xmm6
pxor xmm3, xmm6
; mask inv_zig_zag
pand xmm2, [GLOBAL(inv_zig_zag)]
pand xmm3, [GLOBAL(inv_zig_zag) + 16]
; select the max value
pmaxsw xmm2, xmm3
pshufd xmm3, xmm2, 00001110b
pmaxsw xmm2, xmm3
pshuflw xmm3, xmm2, 00001110b
pmaxsw xmm2, xmm3
pshuflw xmm3, xmm2, 00000001b
pmaxsw xmm2, xmm3
movd eax, xmm2
and eax, 0xff
mov [rdi + vp8_blockd_eob], eax
; begin epilog
add rsp, stack_size
pop rsp
%if ABI_IS_32BIT
pop rdi
%else
%ifidn __OUTPUT_FORMAT__,x64
pop rdi
%endif
%endif
pop rsi
RESTORE_GOT
RESTORE_XMM
pop rbp
ret
; int vp8_fast_quantize_b_impl_sse2 | arg
; (short *coeff_ptr, | 0
; short *qcoeff_ptr, | 1
; short *dequant_ptr, | 2
; short *inv_scan_order, | 3
; short *round_ptr, | 4
; short *quant_ptr, | 5
; short *dqcoeff_ptr) | 6
global sym(vp8_fast_quantize_b_impl_sse2)
sym(vp8_fast_quantize_b_impl_sse2):
push rbp
mov rbp, rsp
SHADOW_ARGS_TO_STACK 7
push rsi
push rdi
; end prolog
mov rdx, arg(0) ;coeff_ptr
mov rcx, arg(2) ;dequant_ptr
mov rdi, arg(4) ;round_ptr
mov rsi, arg(5) ;quant_ptr
movdqa xmm0, XMMWORD PTR[rdx]
movdqa xmm4, XMMWORD PTR[rdx + 16]
movdqa xmm2, XMMWORD PTR[rdi] ;round lo
movdqa xmm3, XMMWORD PTR[rdi + 16] ;round hi
movdqa xmm1, xmm0
movdqa xmm5, xmm4
psraw xmm0, 15 ;sign of z (aka sz)
psraw xmm4, 15 ;sign of z (aka sz)
pxor xmm1, xmm0
pxor xmm5, xmm4
psubw xmm1, xmm0 ;x = abs(z)
psubw xmm5, xmm4 ;x = abs(z)
paddw xmm1, xmm2
paddw xmm5, xmm3
pmulhw xmm1, XMMWORD PTR[rsi]
pmulhw xmm5, XMMWORD PTR[rsi + 16]
mov rdi, arg(1) ;qcoeff_ptr
mov rsi, arg(6) ;dqcoeff_ptr
movdqa xmm2, XMMWORD PTR[rcx]
movdqa xmm3, XMMWORD PTR[rcx + 16]
pxor xmm1, xmm0
pxor xmm5, xmm4
psubw xmm1, xmm0
psubw xmm5, xmm4
movdqa XMMWORD PTR[rdi], xmm1
movdqa XMMWORD PTR[rdi + 16], xmm5
pmullw xmm2, xmm1
pmullw xmm3, xmm5
mov rdi, arg(3) ;inv_scan_order
; Start with 16
pxor xmm4, xmm4 ;clear all bits
pcmpeqw xmm1, xmm4
pcmpeqw xmm5, xmm4
pcmpeqw xmm4, xmm4 ;set all bits
pxor xmm1, xmm4
pxor xmm5, xmm4
pand xmm1, XMMWORD PTR[rdi]
pand xmm5, XMMWORD PTR[rdi+16]
pmaxsw xmm1, xmm5
; now down to 8
pshufd xmm5, xmm1, 00001110b
pmaxsw xmm1, xmm5
; only 4 left
pshuflw xmm5, xmm1, 00001110b
pmaxsw xmm1, xmm5
; okay, just 2!
pshuflw xmm5, xmm1, 00000001b
pmaxsw xmm1, xmm5
movd rax, xmm1
and rax, 0xff
movdqa XMMWORD PTR[rsi], xmm2 ;store dqcoeff
movdqa XMMWORD PTR[rsi + 16], xmm3 ;store dqcoeff
; begin epilog
pop rdi
pop rsi
UNSHADOW_ARGS
pop rbp
ret
SECTION_RODATA
align 16
zig_zag:
dw 0x0000, 0x0001, 0x0004, 0x0008
dw 0x0005, 0x0002, 0x0003, 0x0006
dw 0x0009, 0x000c, 0x000d, 0x000a
dw 0x0007, 0x000b, 0x000e, 0x000f
inv_zig_zag:
dw 0x0001, 0x0002, 0x0006, 0x0007
dw 0x0003, 0x0005, 0x0008, 0x000d
dw 0x0004, 0x0009, 0x000c, 0x000e
dw 0x000a, 0x000b, 0x000f, 0x0010
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