[patch, fortran] Handling of .and. and .or. expressions

[Steve Kargl]

On Sat, Jun 16, 2018 at 11:14:08PM +0200, Thomas Koenig wrote:
> Hi Janus,
> 
> > I happen to hold the opinion that optimizing out a call to a pure 
> > function may be reasonable if it does not influence the result of an 
> > expression, but optimizing out an effectively impure function (i.e. one 
> > with side effects) is not a good idea at any time, since such an 
> > 'optimization' can drastically change the program flow and all numerical 
> > results of a piece of code.
> 
> Well, I am of a different opinion, and so is the Fortran standard.
> 
> I think the compiler should strive to, in that order,
> 
> - conform to the language standard
> - generate fast programs
> - warn about features which may trip the user
> 
> In my patch, I have tried to do all three things at the same time, and
> after this discussion, I still think that this is the right path
> to follow.
> 

+1

-- 
Steve