2017-12-13 17:18 GMT+01:00 Henrik Gramner <hen...@gramner.com>: > On Wed, Dec 13, 2017 at 6:07 AM, Martin Vignali > <martin.vign...@gmail.com> wrote: > > + vpermq m1, [srcq + xq - mmsize + %3], 0x4e; flip each lane > at load > > + vpermq m2, [srcq + xq - 2 * mmsize + %3], 0x4e; flip each lane > at load > > Would doing 2x 128-bit movu + 2x vinserti128 be faster? > > > Hello,
Seems to be slower for me (patch in attach, maybe i made something wrong) With vpermq : hflip_byte_c: 29.2 hflip_byte_ssse3: 28.4 hflip_byte_avx2: 20.2 hflip_short_c: 29.2 hflip_short_ssse3: 28.4 hflip_short_avx2: 20.2 With movu + vinserti128 : hflip_byte_c: 29.2 hflip_byte_ssse3: 28.2 hflip_byte_avx2: 22.7 hflip_short_c: 29.7 hflip_short_ssse3: 28.2 hflip_short_avx2: 21.7 Martin
0001-avfilter-x86-vf_hflip-merge-hflip-byte-and-hflip-sho.patch
Description: Binary data
0002-avfilter-x86-vf_hflip-add-avx2-version-for-hflip_byt.patch
Description: Binary data
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