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arm/aarch64: vp9itxfm: Skip loading the min_eob pointer when it won't be used

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In the half/quarter cases where we don't use the min_eob array, defer
loading the pointer until we know it will be needed.

This is cherrypicked from libav commit
3a0d5e206d.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2017-02-26 22:13:10 +02:00
parent b7a565fe71
commit 70317b25aa
2 changed files with 4 additions and 3 deletions
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3
libavcodec/aarch64/vp9itxfm_neon.S
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@ -1483,7 +1483,6 @@ function ff_vp9_idct_idct_32x32_add_neon, export=1
b.eq idct32x32_dc_add_neon
movrel x10, idct_coeffs
movrel x12, min_eob_idct_idct_32, 2
mov x15, x30
@ -1508,6 +1507,8 @@ function ff_vp9_idct_idct_32x32_add_neon, export=1
cmp w3, #135
b.le idct32x32_half_add_neon
movrel x12, min_eob_idct_idct_32, 2
.irp i, 0, 8, 16, 24
add x0, sp, #(\i*64)
.if \i > 0

4
libavcodec/arm/vp9itxfm_neon.S
View File

@ -889,8 +889,6 @@ function ff_vp9_\txfm1\()_\txfm2\()_16x16_add_neon, export=1
push {r4-r8,lr}
.ifnc \txfm1\()_\txfm2,idct_idct
vpush {q4-q7}
.else
movrel r8, min_eob_idct_idct_16 + 2
.endif
@ Align the stack, allocate a temp buffer
@ -914,6 +912,8 @@ A and r7, sp, #15
ble idct16x16_quarter_add_neon
cmp r3, #38
ble idct16x16_half_add_neon
movrel r8, min_eob_idct_idct_16 + 2
.endif
.irp i, 0, 4, 8, 12