On 04/27/16 09:15, James Greenhalgh wrote:
So this is off for all cores currently supported by GCC? I'm not sure
I understand why we should take this if it will immediately be dead code?
Excuse me? Not only are other target maintainers free to evaluate if
this code is useful to them, but so
James Greenhalgh wrote:
> So this is off for all cores currently supported by GCC?
>
> I'm not sure I understand why we should take this if it will immediately
> be dead code?
I presume it was meant to have the vector variants enabled with -mcpu=exynos-m1
as that is where you can get a good gain
> diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
> index b7086dd..21af809 100644
> --- a/gcc/config/aarch64/aarch64.c
> +++ b/gcc/config/aarch64/aarch64.c
> @@ -414,7 +414,8 @@ static const struct tune_params generic_tunings =
>0, /* max_case_values. */
>0, /* cac
> On 04/04/16 14:06, Evandro Menezes wrote:
> > On 04/01/16 17:52, Evandro Menezes wrote:
> >> On 04/01/16 17:45, Wilco Dijkstra wrote:
> >>> Evandro Menezes wrote:
> >>>
> However, I don't think that there's the need to handle any special
> case for division. The only case when the appr
On 04/04/16 14:06, Evandro Menezes wrote:
On 04/01/16 17:52, Evandro Menezes wrote:
On 04/01/16 17:45, Wilco Dijkstra wrote:
Evandro Menezes wrote:
However, I don't think that there's the need to handle any special
case
for division. The only case when the approximation differs from
divisio
On 04/01/16 17:52, Evandro Menezes wrote:
On 04/01/16 17:45, Wilco Dijkstra wrote:
Evandro Menezes wrote:
However, I don't think that there's the need to handle any special case
for division. The only case when the approximation differs from
division is when the numerator is infinity and the
On 04/01/16 17:45, Wilco Dijkstra wrote:
Evandro Menezes wrote:
However, I don't think that there's the need to handle any special case
for division. The only case when the approximation differs from
division is when the numerator is infinity and the denominator, zero,
when the approximation r
Evandro Menezes wrote:
> However, I don't think that there's the need to handle any special case
> for division. The only case when the approximation differs from
> division is when the numerator is infinity and the denominator, zero,
> when the approximation returns infinity and the division, NA
On 04/01/16 16:22, Wilco Dijkstra wrote:
Evandro Menezes wrote:
The division variant should use the same latency reduction trick I mentioned
for sqrt.
I don't think that it applies here, since it doesn't have to deal with
special cases.
No it applies as it's exactly the same calculation: x *
Evandro Menezes wrote:
> > The division variant should use the same latency reduction trick I
> > mentioned for sqrt.
>
> I don't think that it applies here, since it doesn't have to deal with
> special cases.
No it applies as it's exactly the same calculation: x * rsqrt(y) and x *
recip(y). In
On 04/01/16 08:58, Wilco Dijkstra wrote:
Evandro Menezes wrote:
On 03/23/16 11:24, Evandro Menezes wrote:
On 03/17/16 15:09, Evandro Menezes wrote:
This patch implements FP division by an approximation using the Newton
series.
With this patch, DF division is sped up by over 100% and SF divisio
Evandro Menezes wrote:
On 03/23/16 11:24, Evandro Menezes wrote:
> On 03/17/16 15:09, Evandro Menezes wrote:
>> This patch implements FP division by an approximation using the Newton
>> series.
>>
>> With this patch, DF division is sped up by over 100% and SF division,
>> zilch, both on A57 and on
On 03/23/16 11:24, Evandro Menezes wrote:
On 03/17/16 15:09, Evandro Menezes wrote:
This patch implements FP division by an approximation using the Newton
series.
With this patch, DF division is sped up by over 100% and SF division,
zilch, both on A57 and on M1.
gcc/
* con
On 03/17/16 15:09, Evandro Menezes wrote:
This patch implements FP division by an approximation using the Newton
series.
With this patch, DF division is sped up by over 100% and SF division,
zilch, both on A57 and on M1.
gcc/
* config/aarch64/aarch64-tuning-flags.def
On 03/17/16 15:09, Evandro Menezes wrote:
This patch implements FP division by an approximation using the Newton
series.
With this patch, DF division is sped up by over 100% and SF division,
zilch, both on A57 and on M1.
gcc/
* config/aarch64/aarch64-tuning-flags.def
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