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Re: Revision 162491 -- fortran -fwhole-file regressions


On 24/07/2010 07:39, Tobias Burnus wrote:

> I think reverting the patch is the wrong solution. If you use
> -ffloat-store, the tests are successful. The reason is that one now
> inlines the function and uses the result from the register instead from
> memory. And as the x87 coprocessor has an excess precision, the
> comparison fails. As on x86-64 one uses SSE it works there.

  Ah, this is Return of the Revenge of PR323 Strikes Back!  :-P

  Could fortran be made to usefully implement -fexcess-precision=standard?
I'm surprised this hasn't been more of an issue given the prevalence of big
number-crunching apps in the fortran world.

    cheers,
      DaveK


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