Right, this is during compilation of gcc itself (by xgcc). Thanks for
confirmation that it works on your end, Thomas, I'll play around a bit
more with some extra verbosity in the compiler output to make sure
it's doing what I think it is doing.
On Wed, Jun 12, 2019 at 11:51 AM Thomas Schwinge
<thomas@xxxxxxxxxxxxxxxx> wrote:
>
> Hi!
>
> On Wed, 12 Jun 2019 15:36:56 +0100, Jonathan Wakely <jwakely.gcc@xxxxxxxxx> wrote:
> > On Wed, 12 Jun 2019 at 15:00, Brian Groose <bgroose@xxxxxxxxx> wrote:
> > >
> > > I'm building gcc 8.3.0 cross compiled for HPUX ia64 and I get a few
> > > dozen ICEs in xgcc during the build. For all of them, the ICE happens
> > > at -O1 and -O2, but not at -O0 and -O3. It's mostly libssp.c, all of
> > > c++98, all of c++11, and a few other gcov-*.c files. And libgomp, but
> > > those ICE at every -O level, so I've just disabled it.
> > >
> > > While it would be great if these could be fixed, I'm happy to just
> > > compile these files at -O0 or -O3 if that allows things to work as-is.
> > >
> > > My issue is that I'd like to be able to script this logic instead of
> > > manually having to re-run xgcc or libtool with the extra-O flag on the
> > > end.
> > >
> > > I tried adding '#pragma GCC optimize "-O0"' to the top of the
> >
> > What about:
> >
> > // { dg-options "-O0" }
> >
> > instead?
>
> No, as I understand, he's looking to compile GCC's own files without
> optimizations.
>
> Putting '#pragma GCC optimize "O0"' on top of GCC implementation files is
> a technique that I myself use, and that works. So the problem must be
> something else.
>
>
> Grüße
> Thomas
