On Thu, Oct 22, 2015 at 08:53:07AM -0400, Ganesh Ajjanagadde wrote:
> On Thu, Oct 22, 2015 at 8:42 AM, Ganesh Ajjanagadde wrote:
> > On Thu, Oct 22, 2015 at 8:33 AM, Michael Niedermayer
> > wrote:
> >> On Thu, Oct 22, 2015 at 07:04:41AM -0400, Ganesh Ajjanagadde wrote:
> >>> On Thu, Oct 22, 2015
On Thu, Oct 22, 2015 at 8:42 AM, Ganesh Ajjanagadde wrote:
> On Thu, Oct 22, 2015 at 8:33 AM, Michael Niedermayer
> wrote:
>> On Thu, Oct 22, 2015 at 07:04:41AM -0400, Ganesh Ajjanagadde wrote:
>>> On Thu, Oct 22, 2015 at 5:49 AM, Carl Eugen Hoyos wrote:
>>> > Ganesh Ajjanagadde gmail.com> writ
On Thu, Oct 22, 2015 at 8:33 AM, Michael Niedermayer
wrote:
> On Thu, Oct 22, 2015 at 07:04:41AM -0400, Ganesh Ajjanagadde wrote:
>> On Thu, Oct 22, 2015 at 5:49 AM, Carl Eugen Hoyos wrote:
>> > Ganesh Ajjanagadde gmail.com> writes:
>> >
>> >> > This broke fate with -ftrapv
>> >
>> >> > The prob
On Thu, Oct 22, 2015 at 07:04:41AM -0400, Ganesh Ajjanagadde wrote:
> On Thu, Oct 22, 2015 at 5:49 AM, Carl Eugen Hoyos wrote:
> > Ganesh Ajjanagadde gmail.com> writes:
> >
> >> > This broke fate with -ftrapv
> >
> >> > The problem seems to be in av_gcd() and not the De-Bruijn version of
> >> > f
On Thu, Oct 22, 2015 at 5:49 AM, Carl Eugen Hoyos wrote:
> Ganesh Ajjanagadde gmail.com> writes:
>
>> > This broke fate with -ftrapv
>
>> > The problem seems to be in av_gcd() and not the De-Bruijn version of
>> > ff_ctzll since the gcc builtin is being used.
>>
>> Don't have the time to investig
Ganesh Ajjanagadde gmail.com> writes:
> > This broke fate with -ftrapv
> > The problem seems to be in av_gcd() and not the De-Bruijn version of
> > ff_ctzll since the gcc builtin is being used.
>
> Don't have the time to investigate right now - revert for now unless
> someone can fix it quickly
On Tue, Oct 20, 2015 at 12:52 AM, James Almer wrote:
> On 10/11/2015 12:45 AM, Michael Niedermayer wrote:
>> On Sat, Oct 10, 2015 at 09:58:47PM -0400, Ganesh Ajjanagadde wrote:
>>> This uses Stein's binary GCD algorithm:
>>> https://en.wikipedia.org/wiki/Binary_GCD_algorithm
>>> to get a roughly 4
On Tue, Oct 20, 2015 at 12:52 AM, James Almer wrote:
> On 10/11/2015 12:45 AM, Michael Niedermayer wrote:
>> On Sat, Oct 10, 2015 at 09:58:47PM -0400, Ganesh Ajjanagadde wrote:
>>> This uses Stein's binary GCD algorithm:
>>> https://en.wikipedia.org/wiki/Binary_GCD_algorithm
>>> to get a roughly 4
On 10/11/2015 12:45 AM, Michael Niedermayer wrote:
> On Sat, Oct 10, 2015 at 09:58:47PM -0400, Ganesh Ajjanagadde wrote:
>> This uses Stein's binary GCD algorithm:
>> https://en.wikipedia.org/wiki/Binary_GCD_algorithm
>> to get a roughly 4x speedup over Euclidean GCD on standard architectures
>> wi
On Sun, Oct 11, 2015 at 12:33 PM, wm4 wrote:
> On Sun, 11 Oct 2015 09:59:39 -0400
> Ganesh Ajjanagadde wrote:
>
>> On Sun, Oct 11, 2015 at 9:34 AM, wm4 wrote:
>> > On Sat, 10 Oct 2015 21:58:47 -0400
>> > Ganesh Ajjanagadde wrote:
>> >
>> >> This uses Stein's binary GCD algorithm:
>> >> https://
On Sun, 11 Oct 2015 09:59:39 -0400
Ganesh Ajjanagadde wrote:
> On Sun, Oct 11, 2015 at 9:34 AM, wm4 wrote:
> > On Sat, 10 Oct 2015 21:58:47 -0400
> > Ganesh Ajjanagadde wrote:
> >
> >> This uses Stein's binary GCD algorithm:
> >> https://en.wikipedia.org/wiki/Binary_GCD_algorithm
> >> to get a
On Sun, Oct 11, 2015 at 9:34 AM, wm4 wrote:
> On Sat, 10 Oct 2015 21:58:47 -0400
> Ganesh Ajjanagadde wrote:
>
>> This uses Stein's binary GCD algorithm:
>> https://en.wikipedia.org/wiki/Binary_GCD_algorithm
>> to get a roughly 4x speedup over Euclidean GCD on standard architectures
>> with a com
On Sat, 10 Oct 2015 21:58:47 -0400
Ganesh Ajjanagadde wrote:
> This uses Stein's binary GCD algorithm:
> https://en.wikipedia.org/wiki/Binary_GCD_algorithm
> to get a roughly 4x speedup over Euclidean GCD on standard architectures
> with a compiler intrinsic for ctzll, and a roughly 2x speedup ot
On Sat, Oct 10, 2015 at 09:58:47PM -0400, Ganesh Ajjanagadde wrote:
> This uses Stein's binary GCD algorithm:
> https://en.wikipedia.org/wiki/Binary_GCD_algorithm
> to get a roughly 4x speedup over Euclidean GCD on standard architectures
> with a compiler intrinsic for ctzll, and a roughly 2x speed
This uses Stein's binary GCD algorithm:
https://en.wikipedia.org/wiki/Binary_GCD_algorithm
to get a roughly 4x speedup over Euclidean GCD on standard architectures
with a compiler intrinsic for ctzll, and a roughly 2x speedup otherwise.
At the moment, the compiler intrinsic is used on GCC and Clang
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