Commit ca49901f authored by Loren Merritt's avatar Loren Merritt Committed by Fiona Glaser

Fix bug in hadamard_ac SSE assembly

Some extreme inputs could cause overflows.
parent fb1af79e
......@@ -1463,12 +1463,13 @@ cglobal x264_pixel_hadamard_ac_%1x%2_%3, 2,3
paddusw m1, [rsp+0x60]
paddusw m0, [rsp+0x70]
paddusw m1, [rsp+0x80]
psrlw m0, 1
%endif
HADDW m0, m2
HADDW m1, m3
movd edx, m0
movd eax, m1
shr edx, 2
shr edx, 2 - (%1*%2 >> 8)
shr eax, 1
%ifdef ARCH_X86_64
shl rdx, 32
......
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