PR middle-end/30789
	* builtins.c (do_mpc_arg2): Accept DO_NONFINITE parameter.
	(do_mpc_ckconv): Accept FORCE_CONVERT parameter.
	(fold_builtin_2, do_mpc_arg1): Update accordingly.
	* fold-const.c (const_binop): Likewise.
	* real.h (do_mpc_arg2): Update prototype.

testsuite:
	* gcc.dg/torture/builtin-math-7.c: Update for testing Annex G
	cases in static initializers.

From-SVN: r151904