* builtins.c (integer_valued_real_p): Handle fmin/fmax.
	(fold_builtin_fmin_fmax): New.
	(fold_builtin_1): Use it.

testsuite:
	* gcc.dg/builtins-20.c: Add fmin/fmax cases.
	* gcc.dg/torture/builtin-minmax-1.c: New.

From-SVN: r118976