[Bug fortran/40011] Problems with -fwhole-file

[rguenther at suse dot de]

------- Comment #46 from rguenther at suse dot de  2009-08-26 09:34 -------
Subject: Re:  Problems with -fwhole-file

On Wed, 26 Aug 2009, jv244 at cam dot ac dot uk wrote:

> ------- Comment #45 from jv244 at cam dot ac dot uk  2009-08-26 09:23 -------
> Paul, are there issues other than the ones reported in comment #44 that prevent
> making -fwhole-file the default? 
> Richard, do you believe PR38913 (Fortran does not set TYPE_CANONICAL properly)
> can be fixed for 4.5? 

I don't really know.

> I believe whole-file should be made default before the end of stage 1, if any
> serious problem emerges that can not be fixed, one can always do a step back.

True.

> For example, LTO (-flto) enables -fwhole-file by default, and presumably will
> be merged in trunk one of these days.
> 
> Furthermore, I believe that it would be a good idea to enable -fwhole-file by
> default for Fortan anyway, so that the additional, useful, warning messages are
> generated. This will furthermore guarantee that the number of warnings
> generated by the FE doesn't depend on optimization flags such as -flto. A bonus
> is of course that whole-file gets more testing, so that it becomes reliable.

Correct.  If required I can build SPEC2000 and SPEC2006 with -fwhole-file
again and see what the fallout is.

Richard.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40011