* emit-rtl.c (dconstpi): Delete.

	(dconstsqrt2): New.
	(init_emit_once): Delete dconstpi and init dconstsqrt2.
	* real.h (dconstpi): Delete.
	(dconstsqrt2): New.
	* builtins.c (fold_builtin_cabs): Use dconstsqrt2.
	(fold_builtin_hypot): Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@121550 138bc75d-0d04-0410-961f-82ee72b054a4