[trunk<-vta] Re: [vta, trunk?, fortran] fix -g/-g0 codegen diffs in fortran

[Alexandre Oliva]

On Nov 25, 2008, Alexandre Oliva <aoliva@redhat.com> wrote:

> This patch fixes 204 -fcompare-debug failures in GCC fortran
> (including libgomp) testsuites.

> It fixes two separate issues, that each cause divergence in decl uids,
> which in turn lead to optimization differences in compilations with
> and without -g.

> 1. we didn't generate range types for multidimensional arrays when not
>   generating debug info

> 2. we only generated base decls for array descriptors when emitting
>   debug info

> I acknowledge these changes are somewhat wasteful, especially the
> second part, that's most certainly too conservative, but I figured I'm
> not sufficiently familiar with this front-end to figure out a better
> way to do it.

> Suggestions?

Ok for trunk?

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Alexandre Oliva, freedom fighter    http://FSFLA.org/~lxoliva/
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