[Gambas-user] JIT bug 4

Jussi Lahtinen jussi.lahtinen at ...626...
Tue Jul 10 21:16:34 CEST 2012


Yes it works now.
But "Print 0.6 ^ x" did crash, but "x = 0.6 ^ x" alone did not crash
("imMatr[10, 10] += x" was needed)!
So I wonder was "0.6 ^ x" culprit alone?

Jussi




On 10 July 2012 18:13, Emil Lenngren <emil.lenngren at ...626...> wrote:

> It should work now in revision #4934!
>
> /Emil
>
> 2012/7/9 Emil Lenngren <emil.lenngren at ...626...>
>
> > From gdb I disassemble the jit function to this:
> > ...
> >    0x00007ffff7e3f05c:  movabs $0x0,%rax
> >    0x00007ffff7e3f066:  callq  *%rax
> > ...
> >
> > You can see that llvm replaced the llvm.powi.f64 to a null function :/
> >
> > 2012/7/9 Emil Lenngren <emil.lenngren at ...626...>
> >
> >> Public Sub Button1_Click()
> >>   test(19)
> >> End
> >>
> >>
> >> Fast Private Sub test(x As Integer)
> >>   Print 0.6 ^ x
> >> End
> >>
> >> Does this crash for you as well?
> >>
> >> I think there is a bug in llvm or something. It doesn't seem to like
> that
> >> I call llvm.powi.f64.
> >>
> >> I shall see what I can do about it ...
> >>
> >> /Emil
> >>
> >> 2012/7/9 Jussi Lahtinen <jussi.lahtinen at ...626...>
> >>
> >>> In fact the function can be further reduced to:
> >>> c = CInt((0.6 ^ iEta) / sngCached[iEta])
> >>>
> >>> Jussi
> >>>
> >>>
> >>>
> >>> On 9 July 2012 21:02, Jussi Lahtinen <jussi.lahtinen at ...626...> wrote:
> >>>
> >>> > Finally, here it is isolated. See attachment.
> >>> > I don't know why I didn't get it in first try, and yet, I'm not sure
> >>> what
> >>> > is going on...
> >>> >
> >>> > Gambas 3 rev 4921 @ Xubuntu 12.04 64bit
> >>> >
> >>> > Jussi
> >>> >
> >>>
> >>>
> ------------------------------------------------------------------------------
> >>> Live Security Virtual Conference
> >>> Exclusive live event will cover all the ways today's security and
> >>> threat landscape has changed and how IT managers can respond.
> Discussions
> >>> will include endpoint security, mobile security and the latest in
> malware
> >>> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> >>> _______________________________________________
> >>> Gambas-user mailing list
> >>> Gambas-user at lists.sourceforge.net
> >>> https://lists.sourceforge.net/lists/listinfo/gambas-user
> >>>
> >>
> >>
> >
>
> ------------------------------------------------------------------------------
> Live Security Virtual Conference
> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
> Gambas-user mailing list
> Gambas-user at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gambas-user
>



More information about the User mailing list