For test images manually generated to contain only up prediction, timing results: 8380x3032 255x185 before: 138635 1992 after: 139232 1996
Actually jumping to the proper version depending on the alignment: 8380x3032: 138767
A 0.5% speed improvement for gigantic images is not worth the code duplication.
Fixes ticket #4148
9fa056b pngdsp x86: use unaligned access
libavcodec/pngdsp.h | 4 ++--
libavcodec/x86/pngdsp.asm | 12 ++++++------
2 files changed, 8 insertions(+), 8 deletions(-)