similar to: Where does LTO remove unused functions?

Thanks! On Mon, Jan 27, 2020 at 6:05 PM Teresa Johnson <tejohnson at google.com> wrote: > By default even regular LTO now has module summaries (like the kind used > for ThinLTO). LTO will then run index based dead symbol analysis here: > http://llvm-cs.pcc.me.uk/lib/LTO/LTO.cpp#923. Then when linkRegularLTO is > called here: http://llvm-cs.pcc.me.uk/lib/LTO/LTO.cpp#935, it

Hi [Adding cfe-dev to widen the net] On Tue, November 1, 2011 23:19, Richard Smith wrote: > We recently narrowed down a clang regression to the following testcase: > > struct S { static const int x; }; > template<typename T> struct U { static const int k; }; > template<typename T> const int U<T>::k = T::x; > > #ifdef TU1 > extern int f(); > const int

Hi, We recently narrowed down a clang regression to the following testcase: struct S { static const int x; }; template<typename T> struct U { static const int k; }; template<typename T> const int U<T>::k = T::x; #ifdef TU1 extern int f(); const int S::x = 42; int main() { return f() + U<S>::k; } #endif #ifdef TU2 int f() { return U<S>::k; } #endif /* Steps

On Tue, Nov 1, 2011 at 5:19 PM, Richard Smith <richard at metafoo.co.uk> wrote: > Hi > > [Adding cfe-dev to widen the net] > > On Tue, November 1, 2011 23:19, Richard Smith wrote: >> We recently narrowed down a clang regression to the following testcase: >> >> struct S { static const int x; }; >> template<typename T> struct U { static const int k;

> I see. Using two comdats would still cause the same problem for us, > no? So the solution in the end is to emit: > > TU1: > -------------------------------- > @_ZN1UI1SE1kE = weak_odr constant i32 42, align 4, comdat _ZN1UI1SE1kE > @_ZGVN1UI1SE1kE = weak_odr global i64 1, comdat _ZN1UI1SE1kE > -------------------------------- > > TU2: >

> Unfortunately, making the comdat be for the entire function is not > conformant with the ABI, which says that you either put the variable > and its guard in different comdats or you put them in a single comdat > named for the variable.  It also doesn't actually help unless we disable > inlining. I see. Using two comdats would still cause the same problem for us, no? So the

On Nov 9, 2011, at 11:34 AM, Rafael Espíndola wrote: >>> 1) [Requires ABI change] We emit dynamic initialization code for weak globals >>> (even in TUs where static initialization is required to be performed), unless >>> we can prove that every translation unit will use static initialization. We >>> emit the global plus its guard variable as a single object so

I tried a small variation: struct S { static const int x; }; template<typename T> struct U { static const int k; }; template<typename T> const int U<T>::k = T::x; #ifdef TU1 extern int f(); const int S::x = 42; int main() { return f() + reinterpret_cast<long>(&U<S>::k); } #endif #ifdef TU2 int f() { return U<S>::k; } #endif and it crashes with gcc too

>> 1) [Requires ABI change] We emit dynamic initialization code for weak globals >> (even in TUs where static initialization is required to be performed), unless >> we can prove that every translation unit will use static initialization. We >> emit the global plus its guard variable as a single object so the linker can't >> separate them (this is the ABI change).

2011/11/7 Rafael Espíndola <rafael.espindola at gmail.com>: > I tried a small variation: > > struct S { >  static const int x; > }; > template<typename T> struct U { >  static const int k; > }; > template<typename T> const int U<T>::k = T::x; > > #ifdef TU1 > extern int f(); > const int S::x = 42; > int main() { >  return f() +

On Nov 7, 2011, at 9:47 AM, Richard Smith wrote: >> In cases where the C++ standard requires static initialization, >> introducing a write violates the guarantees of the C++ standard for static >> initialization. Therefore, I'm not sure the whole "make the constant >> writable" approach is actually viable. > > There is another problem which afflicts

On Nov 21, 2011, at 9:05 AM, Rafael Espíndola wrote: >> Unfortunately, making the comdat be for the entire function is not >> conformant with the ABI, which says that you either put the variable >> and its guard in different comdats or you put them in a single comdat >> named for the variable. It also doesn't actually help unless we disable >> inlining. >

On Mon, November 7, 2011 16:31, Eli Friedman wrote: > 2011/11/7 Rafael Espíndola <rafael.espindola at gmail.com>: >> I tried a small variation: >> >> >> struct S {  static const int x; >> }; >> template<typename T> struct U {  static const int k; >> }; >> template<typename T> const int U<T>::k = T::x; >> >>

> >> On 2016-Apr-15, at 17:12, David Blaikie <dblaikie at gmail.com> wrote: >> >> >> >> On Fri, Apr 15, 2016 at 4:04 PM, Duncan P. N. Exon Smith <dexonsmith at apple.com> wrote: >> >> > On 2016-Apr-15, at 14:53, David Blaikie <dblaikie at gmail.com> wrote: >> > >> > >> > >> >> On Fri, Apr

Hi everybody, just a quick reminder that the Xen Hackathon is in Oracle, March 6-8, Santa Clara, CA, USA. We have originally planned for about 25 people, but already we have 14 people signed up. If you are planning to attend please sign up quickly, such that I get a feeling for the number of attendees. I can then go back to Oracle and see whether we can accommodate more people than we

Hello, Le 29/08/2019 à 01:02, Artem Dergachev a écrit : > Yay thx! > > Sylvestre, is there anything i can help you with in order to get the reports page back up? Sorry, it took me a while to get that back but here is the report of r371718: https://llvm.org/reports/scan-build/ > I'd also indeed love to spam people with warnings that they introduced, even if in the form of a

----- Original Message ----- > From: "Eric Blake" <eblake@redhat.com> > To: "Andrew Martin" <amartin@xes-inc.com> > Cc: "Gergely Horváth" <gergely.horvath@inepex.com>, libvirt-users@redhat.com > Sent: Thursday, February 6, 2014 9:31:29 AM > Subject: Re: [libvirt-users] Can I move the disk image of the guest while it is running? >

Thank you Eric, On 2014-02-05 17:23, Eric Blake wrote: > Yes, live storage migration is possible; although at the moment, qemu is > lacking a way to restart the operation if it fails midstream, so libvirt > only allows the operation if you are willing to temporarily make your > guest transient. What does this mean? Will I loose anything if - for example - there is not enough space on

Hello guys! We want to move some guests' disk images to different locations (within the same machine, locally), but we do not want to turn off the guests. Can we do that while the guest is running, like live migration? I did not find any related documentation or posts about it. Let's say the guest has a disk at /ssd/image.raw We want to move that to /hdd/image.raw Is there any way to

Am 14.11.19 um 14:03 schrieb Benny Pedersen via dovecot: > Thomas G?ttler via dovecot skrev den 2019-11-14 08:55: > >> Is there already an open source imap2jmap server? > > why do you say imap here ? > > https://www.cyrusimap.org/imap/developer/jmap.html > > cyrus already have it, we just wait for dovecot :) I used my favorite search engine (ecosia) and found