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Save a register (or regsize of stackspace for x86-32) for the no-loop 

mbedge loopfilter functions, by re-using space that holds a variable
that we no longer need.

Originally committed as revision 24510 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ronald S. Bultje 2010-07-26 14:00:15 +00:00
parent bcd4aa6498
commit 2a180c69ea
1 changed files with 24 additions and 16 deletions
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40
libavcodec/x86/vp8dsp.asm
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@ -2200,11 +2200,15 @@ cglobal vp8_%2_loop_filter16y_mbedge_%1, 5, %3, %5
; align stack
mov stack_reg, rsp ; backup stack pointer
and rsp, ~(mmsize-1) ; align stack
%ifidn %2, sse2
sub rsp, mmsize * 7
%else
sub rsp, mmsize * 8 ; stack layout: [0]=E, [1]=I, [2]=hev_thr
; [3]=hev() result
; [4]=filter tmp result
; [5]/[6] = p2/q2 backup
; [7]=lim_res sign result
%endif
%define flim_E [rsp]
%define flim_I [rsp+mmsize]
@ -2215,7 +2219,11 @@ cglobal vp8_%2_loop_filter16y_mbedge_%1, 5, %3, %5
%define q0backup [rsp+mmsize*4]
%define p2backup [rsp+mmsize*5]
%define q2backup [rsp+mmsize*6]
%ifidn %2, sse2
%define lim_sign [rsp]
%else
%define lim_sign [rsp+mmsize*7]
%endif
mova flim_E, m0
mova flim_I, m1
@ -2232,7 +2240,7 @@ cglobal vp8_%2_loop_filter16y_mbedge_%1, 5, %3, %5
%define q0backup m8
%define p2backup m13
%define q2backup m14
%define lim_sign m15
%define lim_sign m9
; splat function arguments
SPLATB_REG flim_E, E_reg, m7 ; E
@ -2638,8 +2646,8 @@ cglobal vp8_%2_loop_filter16y_mbedge_%1, 5, %3, %5
pmullw m1, [pw_9]
paddw m6, m7
paddw m1, m7
%ifdef m15
SWAP 7, 15
%ifdef m9
SWAP 7, 9
%else
mova m7, lim_sign
%endif
@ -2749,29 +2757,29 @@ MBEDGE_LOOPFILTER mmxext, h, 6, 8, 0
INIT_XMM
%define SPLATB_REG SPLATB_REG_SSE2
%define WRITE_8W WRITE_8W_SSE2
MBEDGE_LOOPFILTER sse2, v, 5, 16, 16
MBEDGE_LOOPFILTER sse2, v, 5, 16, 15
%ifdef m8
MBEDGE_LOOPFILTER sse2, h, 5, 16, 16
MBEDGE_LOOPFILTER sse2, h, 5, 16, 15
%else
MBEDGE_LOOPFILTER sse2, h, 6, 16, 16
MBEDGE_LOOPFILTER sse2, h, 6, 16, 15
%endif
MBEDGE_LOOPFILTER sse2, v, 6, 8, 16
MBEDGE_LOOPFILTER sse2, h, 6, 8, 16
MBEDGE_LOOPFILTER sse2, v, 6, 8, 15
MBEDGE_LOOPFILTER sse2, h, 6, 8, 15
%define SPLATB_REG SPLATB_REG_SSSE3
MBEDGE_LOOPFILTER ssse3, v, 5, 16, 16
MBEDGE_LOOPFILTER ssse3, v, 5, 16, 15
%ifdef m8
MBEDGE_LOOPFILTER ssse3, h, 5, 16, 16
MBEDGE_LOOPFILTER ssse3, h, 5, 16, 15
%else
MBEDGE_LOOPFILTER ssse3, h, 6, 16, 16
MBEDGE_LOOPFILTER ssse3, h, 6, 16, 15
%endif
MBEDGE_LOOPFILTER ssse3, v, 6, 8, 16
MBEDGE_LOOPFILTER ssse3, h, 6, 8, 16
MBEDGE_LOOPFILTER ssse3, v, 6, 8, 15
MBEDGE_LOOPFILTER ssse3, h, 6, 8, 15
%define WRITE_8W WRITE_8W_SSE4
%ifdef m8
MBEDGE_LOOPFILTER sse4, h, 5, 16, 16
MBEDGE_LOOPFILTER sse4, h, 5, 16, 15
%else
MBEDGE_LOOPFILTER sse4, h, 6, 16, 16
MBEDGE_LOOPFILTER sse4, h, 6, 16, 15
%endif
MBEDGE_LOOPFILTER sse4, h, 6, 8, 16
MBEDGE_LOOPFILTER sse4, h, 6, 8, 15