[Mesa-dev] [Bug 83570] Glyphy demo throws unhandled Integer division by zero exception

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83570

--- Comment #7 from Roland Scheidegger <sroland at vmware.com> ---
(In reply to comment #6)
> (In reply to comment #5)
> > Actually, I think it would be a good idea if you could return 0xffffffff
> > instead of 0. This is typically what GPUs will do, since the d3d10 docs
> > claim this is required, both for div and mod -
> > http://msdn.microsoft.com/en-us/library/windows/desktop/hh447244%28v=vs.
> > 85%29.aspx
> 
> Though actually that might not make sense for signed div (which d3d10
> doesn't have).

And actually I didn't look closely enough, the unsigned versions already handle
this (in udiv_emit_cpu() etc for gallivm), so it's just idiv_emit_cpu() which
needs fixing. And zero is probably fine, I can't really think of a more useful
value (maybe -MAX_INT or something would work too if anyone cares).

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