Re: [PATCH][RFC][wide-int] Fix some build errors on arm in wide-int branch and report ICE

[Kenneth Zadeck <zadeck at naturalbridge dot com>]

On 04/23/2014 05:47 AM, Richard Biener wrote:
> On Tue, Apr 22, 2014 at 6:04 PM, Mike Stump <mikestump@comcast.net> wrote:
> > On Apr 22, 2014, at 8:33 AM, Richard Sandiford <rdsandiford@googlemail.com> wrote:
> > > Kyrill Tkachov <kyrylo.tkachov@arm.com> writes:
> > > > Ping.
> > > > http://gcc.gnu.org/ml/gcc-patches/2014-04/msg00769.html
> > > > Any ideas? I recall chatter on IRC that we want to merge wide-int into trunk
> > > > soon. Bootstrap failure on arm would prevent that...
> > > Sorry for the late reply.  I hadn't forgotten, but I wanted to wait
> > > until I had chance to look into the ICE before replying, which I haven't
> > > had chance to do yet.
> > They are separable issues, so, I checked in the change.
> >
> > > It's a shame we can't use C++ style casts,
> > > but I suppose that's the price to pay for being able to write
> > > "unsigned HOST_WIDE_INTâ.
> > unsigned_HOST_WIDE_INT isnât horrible, but, yeah, my fingers were expecting a typedef or better.  I slightly prefer the int (1) style, but I think we should go the direction of the patch.
> Well, on my list of things to try for 4.10 is to kill off HOST_WIDE_* and
> require a 64bit integer type on the host and force all targets to use
> a 64bit 'hwi'.  Thus, s/HOST_WIDE_INT/int64_t/ (and the appropriate
> related changes).
>
> Richard.
I should point out that there is a community that wants to go in the 
opposite direction here.   They are the people with real 32 bit hosts 
who want to go back to a world where they are allowed to make hwi a 32 
bit value.    They have been waiting wide-int to be committed because 
they see this as a way to get back to world where most of the math is 
done natively.

I am not part of this community but they feel that if the math that has 
the potential to be big to be is done in wide-ints, then they can go 
back to using a 32 bit hwi for everything else.    For them, a wide-int 
built on 32 hwi's would be a win.

kenny