[Bug c/79219] Feature request: double width/single width -> single width integer division and remainder

[hpa at zytor dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79219

--- Comment #8 from H. Peter Anvin <hpa at zytor dot com> ---
(In reply to Richard Biener from comment #1)
> So you mean DW/W -> W, but that can result in the result being not
> representable?
> What's the desired behavior in this case?  Invoking undefined behavior?

When the output is not representable, the expected behavior is whatever the
platform does when an ordinary division divides by zero (which usually means
some variant of raise(SIGFPE) is invoked through one path or another.)