[Ada] Emit debug info for named numbers

[Eric Botcazou]

You can declare named numbers in Ada with the syntax:

  Pi : constant := 3.14159

and the compiler automatically resolves the underlying type.  But it wouldn't 
emit debug info for the declaration although DW_TAG_constant is a perfect fit.

Tested on x86_64-suse-linux, applied on the mainline.


2019-10-11  Eric Botcazou  <ebotcazou@adacore.com>

	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Named_{Integer|Real}>:
	New case to deal with the definition of named numbers.
	<E_Variable>: Minor tweaks.  Set DECL_IGNORED_P on the CONST_DECL
	if a corresponding variable is built.
	* gcc-interface/trans.c (gnat_to_gnu) <N_Integer_Literal>: Return
	error_mark_node instead of aborting on overflow for named numbers.
	<N_Number_Declaration>: Reuse the <N_Object_Declaration> case and
	deal with error_mark_node specifically.
	* gcc-interface/utils.c (create_var_decl): Do not set DECL_IGNORED_P
	on CONST_DECLs.
	(gnat_write_global_declarations): Output global constants.

-- 
Eric Botcazou
-------------- next part --------------
A non-text attachment was scrubbed...
Name: p.diff
Type: text/x-patch
Size: 6424 bytes
Desc: not available
URL: <http://gcc.gnu.org/pipermail/gcc-patches/attachments/20191011/9be7b7e0/attachment.bin>