PR fortran/20897

[pf3gnuchains/gcc-fork.git] / gcc / dbxout.c

diff --git a/gcc/dbxout.c b/gcc/dbxout.c
index 49a3242..5732427 100644 (file)
--- a/gcc/dbxout.c
+++ b/gcc/dbxout.c
@@ -2369,6 +2369,83 @@ dbxout_expand_expr (tree expr)
     }
 }
 
+/* Helper function for output_used_types.  Queue one entry from the
+   used types hash to be output.  */
+
+static int
+output_used_types_helper (void **slot, void *data)
+{
+  tree type = *slot;
+  VEC(tree, heap) **types_p = data;
+
+  if ((TREE_CODE (type) == RECORD_TYPE
+       || TREE_CODE (type) == UNION_TYPE
+       || TREE_CODE (type) == QUAL_UNION_TYPE
+       || TREE_CODE (type) == ENUMERAL_TYPE)
+      && TYPE_STUB_DECL (type)
+      && DECL_P (TYPE_STUB_DECL (type))
+      && ! DECL_IGNORED_P (TYPE_STUB_DECL (type)))
+    VEC_quick_push (tree, *types_p, TYPE_STUB_DECL (type));
+  else if (TYPE_NAME (type)
+          && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
+    VEC_quick_push (tree, *types_p, TYPE_NAME (type));
+
+  return 1;
+}
+
+/* This is a qsort callback which sorts types and declarations into a
+   predictable order (types, then declarations, sorted by UID
+   within).  */
+
+static int
+output_types_sort (const void *pa, const void *pb)
+{
+  const tree lhs = *((const tree *)pa);
+  const tree rhs = *((const tree *)pb);
+
+  if (TYPE_P (lhs))
+    {
+      if (TYPE_P (rhs))
+       return TYPE_UID (lhs) - TYPE_UID (rhs);
+      else
+       return 1;
+    }
+  else
+    {
+      if (TYPE_P (rhs))
+       return -1;
+      else
+       return DECL_UID (lhs) - DECL_UID (rhs);
+    }
+}
+
+
+/* Force all types used by this function to be output in debug
+   information.  */
+
+static void
+output_used_types (void)
+{
+  if (cfun && cfun->used_types_hash)
+    {
+      VEC(tree, heap) *types;
+      int i;
+      tree type;
+
+      types = VEC_alloc (tree, heap, htab_elements (cfun->used_types_hash));
+      htab_traverse (cfun->used_types_hash, output_used_types_helper, &types);
+
+      /* Sort by UID to prevent dependence on hash table ordering.  */
+      qsort (VEC_address (tree, types), VEC_length (tree, types),
+            sizeof (tree), output_types_sort);
+
+      for (i = 0; VEC_iterate (tree, types, i, type); i++)
+       debug_queue_symbol (type);
+
+      VEC_free (tree, heap, types);
+    }
+}
+
 /* Output a .stabs for the symbol defined by DECL,
    which must be a ..._DECL node in the normal namespace.
    It may be a CONST_DECL, a FUNCTION_DECL, a PARM_DECL or a VAR_DECL.
@@ -2482,6 +2559,9 @@ dbxout_symbol (tree decl, int local ATTRIBUTE_UNUSED)
          || GET_CODE (XEXP (decl_rtl, 0)) != SYMBOL_REF)
        break;
 
+      if (flag_debug_only_used_symbols)
+       output_used_types ();
+
       dbxout_begin_complex_stabs ();
       stabstr_I (DECL_ASSEMBLER_NAME (decl));
       stabstr_S (TREE_PUBLIC (decl) ? ":F" : ":f");