[Bug tree-optimization/88240] Potential optimization bug: invalid pre-load of floating-point value could cause SIGFPE-underflow if value is integer

fw at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Thu Nov 29 14:42:00 GMT 2018


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88240

--- Comment #9 from Florian Weimer <fw at gcc dot gnu.org> ---
(In reply to Thomas De Schampheleire from comment #6)
> (In reply to Florian Weimer from comment #5)
> > This is QEMU with TCG, right?  It could be an i387 emulation bug.
> 
> I don't think so. Isn't it so that KVM and TCG are mutually exclusive
> choices?
> We see the problem if we pass --enable-kvm and don't see the problem if we
> don't pass that flag. From my limited understanding of qemu, not paying the
> flag means that the default TCG emulation is used. Am I wrong?

Right, my mistake.


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