[patch, fortran] Further dependency improvements

[Daniel Kraft]

Thomas Koenig wrote:
> Hello world,
> 
> now I'm back from my holiday, here is another round of dependency
> improvements.  This patch is fairly self-explanatory.
> 
> OK for trunk?

Hi Thomas,

not a review but just a small comment:

+	      /* List of intrinsic functions with side effects or which
+		 may compare unequal for equal arguments.  */
+	    case GFC_ISYM_CHDIR:
+	    case GFC_ISYM_CHMOD:
+	    case GFC_ISYM_DTIME:
+	    case GFC_ISYM_ETIME:
+	    case GFC_ISYM_FDATE:
+	    case GFC_ISYM_FGET:
+	    case GFC_ISYM_FGETC:
+	    case GFC_ISYM_FNUM:
+	    case GFC_ISYM_FPUT:
...

I think that we introduced CLASS_PURE / CLASS_IMPURE for intrinsics 
lately -- and would suggest to use that information instead of 
duplicating the list here.  Although I do not completely remember 
whether that is already set correctly or not.

Daniel

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