Hi, On Tue, Oct 25, 2016 at 5:12 PM, Moritz Barsnick <barsn...@gmx.net> wrote:
> On Tue, Oct 25, 2016 at 14:28:38 +0200, u-9...@aetey.se wrote: > > In a perfect world the user might be offered a build time choice: > > either lose N% of the performance or take the consequences of not > > following the ABI. > > That was exactly my thought too, assuming it doesn't pollute the code > even more: > --disable-fast-simd or --enable-compliant-mmx or something. "auto" > would detect musl and/or test for the necessity to use emms_c() or > other measures. If you don't care about performance, issue a emms upon RET in INIT_MMX functions (just like we do for vzeroupper in INIT_YMM functions) using x86inc.asm. Of course, this should be disabled for x86-64 or non-musl builds. (That doesn't yet deal with inline asm.) Ronald _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
