On 2025-07-11 15:28, Uros Bizjak wrote:
Why not just switch over unconditionally? __fentry__ seems like a
better alternative to mcount overall and it has been around long enough
that even older deployments should be relatively unaffected.
Actually, it is switched on by default for i?86-*-linux
Uros Bizjak writes:
> On Fri, Jul 11, 2025 at 2:33 PM Siddhesh Poyarekar
> wrote:
>>
>> On 2025-07-08 18:07, Sam James wrote:
>> >> OK in principle, but please allow some time for distro maintainers
>> >> (CC'd) to voice their opinion.
>> >
>> > It looks good to me and I plan on us using it. I'
On Fri, Jul 11, 2025 at 2:33 PM Siddhesh Poyarekar wrote:
>
> On 2025-07-08 18:07, Sam James wrote:
> >> OK in principle, but please allow some time for distro maintainers
> >> (CC'd) to voice their opinion.
> >
> > It looks good to me and I plan on us using it. I'd like opinions from
> > one othe
Siddhesh Poyarekar writes:
> On 2025-07-08 18:07, Sam James wrote:
>>> OK in principle, but please allow some time for distro maintainers
>>> (CC'd) to voice their opinion.
>> It looks good to me and I plan on us using it. I'd like opinions
>> from
>> one other group first before it goes in if po
On 2025-07-08 18:07, Sam James wrote:
OK in principle, but please allow some time for distro maintainers
(CC'd) to voice their opinion.
It looks good to me and I plan on us using it. I'd like opinions from
one other group first before it goes in if possible though, as our
perspective is differe
Uros Bizjak writes:
> On Thu, Jul 3, 2025 at 12:01 PM H.J. Lu wrote:
>>
>> When profiling is enabled with shrink wrapping, the mcount call may not
>> be placed at the function entry after
>>
>> pushq %rbp
>> movq %rsp,%rbp
>>
>> As the result, the profile data may be skewed which makes PGO less
On Thu, Jul 3, 2025 at 12:01 PM H.J. Lu wrote:
>
> When profiling is enabled with shrink wrapping, the mcount call may not
> be placed at the function entry after
>
> pushq %rbp
> movq %rsp,%rbp
>
> As the result, the profile data may be skewed which makes PGO less
> effective.
>
> Add --enable-x8
