[Ada] Do not generate special PARM_DECL in LTO mode

[Eric Botcazou]

We generate a special PARM_DECL for Out parameters passed by copy at -O0, but 
it doesn't play nice with LTO so this patch removes it when LTO is enabled.

Tested on x86_64-suse-linux, applied on the mainline and 4.7 branch.


2012-10-22  Eric Botcazou  <ebotca...@adacore.com>

        * gcc-interface/decl.c (gnat_to_gnu_entity) <E_Out_Parameter>: Do not
        generate the special PARM_DECL for an Out parameter in LTO mode.


-- 
Eric Botcazou
Index: gcc-interface/decl.c
===================================================================
--- gcc-interface/decl.c	(revision 192648)
+++ gcc-interface/decl.c	(working copy)
@@ -1503,7 +1503,11 @@ gnat_to_gnu_entity (Entity_Id gnat_entit
 	   the VAR_DECL.  Suppress debug info for the latter but make sure it
 	   will live on the stack so that it can be accessed from within the
 	   debugger through the PARM_DECL.  */
-	if (kind == E_Out_Parameter && definition && !optimize && debug_info_p)
+	if (kind == E_Out_Parameter
+	    && definition
+	    && debug_info_p
+	    && !optimize
+	    && !flag_generate_lto)
 	  {
 	    tree param = create_param_decl (gnu_entity_name, gnu_type, false);
 	    gnat_pushdecl (param, gnat_entity);