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
