On 9/11/18 7:38 AM, Vlad Lazar wrote:
> Hi.
>
> This patch makes the scheduler prefer instructions with higher cost if
> two given instructions are equally good.
> Issuing more restricted instructions first is particularly useful on
> in-order cores because it increases the
> number of dual issue
On 9/11/18 9:00 AM, Kyrill Tkachov wrote:
> Hi Ramana,
>
> On 11/09/18 15:55, Ramana Radhakrishnan wrote:
>> On Tue, 11 Sep 2018, 14:38 Vlad Lazar, wrote:
>>
>> > Hi.
>> >
>> > This patch makes the scheduler prefer instructions with higher cost
>> if two
>> > given instructions are equally good.
>
> > This to me feels like the wrong approach as it feels like you are assuming
> > INSN_COST is latency in some way ? Surely, we shouldn't be introducing
> > INSN_COST based stuff into the scheduler.
> >
> > Have you investigated using TARGET_SCHED_ADJUST_COST (IIRC, look for the
> > right name
Hi Ramana,
On 11/09/18 15:55, Ramana Radhakrishnan wrote:
On Tue, 11 Sep 2018, 14:38 Vlad Lazar, wrote:
> Hi.
>
> This patch makes the scheduler prefer instructions with higher cost if two
> given instructions are equally good.
> Issuing more restricted instructions first is particularly usefu
On Tue, 11 Sep 2018, 14:38 Vlad Lazar, wrote:
> Hi.
>
> This patch makes the scheduler prefer instructions with higher cost if two
> given instructions are equally good.
> Issuing more restricted instructions first is particularly useful on
> in-order cores because it increases the
> number of du
