dependency.c (gfc_dep_compare_functions): Document new behavior for REALs and complex.

dependency.c (gfc_dep_compare_functions): Document new behavior for REALs and complex.

2011-12-29  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* dependency.c (gfc_dep_compare_functions):  Document
	new behavior for REALs and complex.  Add comment to cases
	where only INTEGERs are handled.  Compare REAL and COMPLEX
	constants, returning 0 and -2 only.  Add assert to make
	sure that only integer constants are compared.

2011-12-29  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* gfortran.dg/function_optimize_9.f90:  New test.

From-SVN: r182720