add entity_has_ld_ident function

[r28141]

include/libfirm/typerep.h

@@ -110,7 +110,7 @@ typedef enum {
 /**
  * linkage specifies how the linker treats symbols
  */
-typedef enum {
+typedef enum ir_linkage {
 	IR_LINKAGE_DEFAULT         = 0,
 	/**
 	 * A symbol whose definition won't change in a program.
@@ -251,6 +251,9 @@ FIRM_API void set_entity_ld_ident(ir_entity *ent, ident *ld_ident);
 /** Returns the mangled name of the entity as a string. */
 FIRM_API const char *get_entity_ld_name(const ir_entity *ent);
 
+/** returns 1 if the entity has an ld_ident set explicitely */
+FIRM_API int entity_has_ld_ident(const ir_entity *entity);
+
 /** Returns the owner of the entity. */
 FIRM_API ir_type *get_entity_owner(const ir_entity *ent);
 

ir/tr/entity.c

@@ -301,6 +301,11 @@ const char *(get_entity_ld_name)(const ir_entity *ent)
 	return _get_entity_ld_name(ent);
 }
 
+int entity_has_ld_ident(const ir_entity *entity)
+{
+	return entity->ld_name != NULL;
+}
+
 ir_type *(get_entity_type)(const ir_entity *ent)
 {
 	return _get_entity_type(ent);