On 24/03/14 3:07 PM, Diego Biurrun wrote: > On Mon, Mar 24, 2014 at 02:59:08PM -0300, James Almer wrote: >> On 24/03/14 11:28 AM, Diego Biurrun wrote: >>> On Thu, Mar 20, 2014 at 03:37:56PM -0300, James Almer wrote: >>>> --- a/libavcodec/x86/dcadsp.asm >>>> +++ b/libavcodec/x86/dcadsp.asm >>>> @@ -230,6 +230,14 @@ DCA_LFE_FIR 1 >>>> mova m12, [ptr1 + j + mmsize] >>>> %endif >>>> +%if cpuflag(fma3) >>>> + fmaddps m2, m6, [win + %1 + j + 16 * 4], m2 >>>> + fnmaddps m1, m5, [win + %1 + j], m1 >>>> +%if ARCH_X86_64 >>>> + fmaddps m8, m12, [win + %1 + j + mmsize + 16 * 4], m8 >>>> + fnmaddps m7, m11, [win + %1 + j + mmsize], m7 >>>> +%endif >>>> +%else ; non-FMA >>> >>> Doesn't FMA3 imply x86_64? >> >> No, no simd extension so far implies x86_64. Not even the upcoming AVX512. > > But which modern x86 SIMD extensions are available on x86_32? > > Diego
All of them so far work on both x86_32 and x86_64, with the usual limitations for the former (8 general purpose registers and 8 simd registers). As i said, even AVX512, which hasn't been realized in hardware yet, will also be available for x86_32. _______________________________________________ libav-devel mailing list libav-devel@libav.org https://lists.libav.org/mailman/listinfo/libav-devel
