This avoids reloading them if they haven't been clobbered, if the
first pass also was idct.
This is similar to what was done in the aarch64 version.
This is cherrypicked from libav commit
3c87039a404c5659ae9bf7454a04e186532eb40b.
---
libavcodec/arm/vp9itxfm_neon.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/arm/vp9itxfm_neon.S b/libavcodec/arm/vp9itxfm_neon.S
index 0097f5f..d5b8495 100644
--- a/libavcodec/arm/vp9itxfm_neon.S
+++ b/libavcodec/arm/vp9itxfm_neon.S
@@ -814,7 +814,7 @@ A and r7, sp, #15
mov r3, #\i
bl \txfm1\()16_1d_4x16_pass1_neon
.endr
-.ifc \txfm2,idct
+.ifc \txfm1\()_\txfm2,iadst_idct
movrel r12, idct_coeffs
vld1.16 {q0-q1}, [r12,:128]
.endif
--
2.7.4
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