x86/v210dec: don't reserve more xmm regs than needed

Prevents pointless register saving on win64 for the sse3 and avx
versions of the function.

Signed-off-by: James Almer <jamrial@gmail.com>

diff --git a/libavcodec/x86/v210.asm b/libavcodec/x86/v210.asm
index 5a71ba41b266f71a77650bf29a07fbce5bfd15ca..d96a7b7f5a801ffc9bfdc4410ead923ca87a948c 100644 (file)
--- a/libavcodec/x86/v210.asm
+++ b/libavcodec/x86/v210.asm
@@ -39,7 +39,7 @@ SECTION .text
 %macro v210_planar_unpack 1
 
 ; v210_planar_unpack(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
-cglobal v210_planar_unpack_%1, 5, 5, 8
+cglobal v210_planar_unpack_%1, 5, 5, 6 + 2 * cpuflag(avx2)
     movsxdifnidn r4, r4d
     lea    r1, [r1+2*r4]
     add    r2, r4