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arm: fft_vfp: Unify the behaviour in ff_fft_calc_vfp between arm/thumb

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Don't include the function pointer table in the code segment
in arm mode.

This shouldn't have any significant performance effect. It does
end up as a few more instructions than before, for ARM, but
only at the entry to this function, not within the fft functions
themselves.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2014-11-16 12:46:51 +02:00
parent ae81576414
commit b280c6202b
1 changed files with 5 additions and 10 deletions
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15
libavcodec/arm/fft_vfp.S
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@ -30,14 +30,10 @@
function ff_fft_calc_vfp, export=1
ldr ip, [a1, #0] @ nbits
mov a1, a2
A ldr pc, [pc, ip, lsl #2]
A .word 0
A .word 0
A .word 0
T movrel a2, (fft_tab_vfp - 8)
T ldr pc, [a2, ip, lsl #2]
T endfunc
T const fft_tab_vfp
movrel a2, (fft_tab_vfp - 8)
ldr pc, [a2, ip, lsl #2]
endfunc
const fft_tab_vfp
.word fft4_vfp
.word fft8_vfp
.word X(ff_fft16_vfp) @ this one alone is exported
@ -53,8 +49,7 @@ T const fft_tab_vfp
.word fft16384_vfp
.word fft32768_vfp
.word fft65536_vfp
A endfunc
T endconst
endconst
function fft4_vfp
vldr d0, [a1, #0*2*4] @ s0,s1 = z[0]