-/* Emit code to perform the initialization of a declaration DECL. */
-
-void
-expand_decl_init (tree decl)
-{
- int was_used = TREE_USED (decl);
-
- /* If this is a CONST_DECL, we don't have to generate any code. Likewise
- for static decls. */
- if (TREE_CODE (decl) == CONST_DECL
- || TREE_STATIC (decl))
- return;
-
- /* Compute and store the initial value now. */
-
- push_temp_slots ();
-
- if (DECL_INITIAL (decl) == error_mark_node)
- {
- enum tree_code code = TREE_CODE (TREE_TYPE (decl));
-
- if (code == INTEGER_TYPE || code == REAL_TYPE || code == ENUMERAL_TYPE
- || code == POINTER_TYPE || code == REFERENCE_TYPE)
- expand_assignment (decl, convert (TREE_TYPE (decl), integer_zero_node),
- 0);
- }
- else if (DECL_INITIAL (decl) && TREE_CODE (DECL_INITIAL (decl)) != TREE_LIST)
- {
- emit_line_note (DECL_SOURCE_LOCATION (decl));
- expand_assignment (decl, DECL_INITIAL (decl), 0);
- }
-
- /* Don't let the initialization count as "using" the variable. */
- TREE_USED (decl) = was_used;
-
- /* Free any temporaries we made while initializing the decl. */
- preserve_temp_slots (NULL_RTX);
- free_temp_slots ();
- pop_temp_slots ();
-}
-
-\f
-/* DECL is an anonymous union. CLEANUP is a cleanup for DECL.
- DECL_ELTS is the list of elements that belong to DECL's type.
- In each, the TREE_VALUE is a VAR_DECL, and the TREE_PURPOSE a cleanup. */
-
-void
-expand_anon_union_decl (tree decl, tree cleanup ATTRIBUTE_UNUSED,
- tree decl_elts)
-{
- rtx x;
- tree t;
-
- /* If any of the elements are addressable, so is the entire union. */
- for (t = decl_elts; t; t = TREE_CHAIN (t))
- if (TREE_ADDRESSABLE (TREE_VALUE (t)))
- {
- TREE_ADDRESSABLE (decl) = 1;
- break;
- }
-
- expand_decl (decl);
- x = DECL_RTL (decl);
-
- /* Go through the elements, assigning RTL to each. */
- for (t = decl_elts; t; t = TREE_CHAIN (t))
- {
- tree decl_elt = TREE_VALUE (t);
- enum machine_mode mode = TYPE_MODE (TREE_TYPE (decl_elt));
-
- /* If any of the elements are addressable, so is the entire
- union. */
- if (TREE_USED (decl_elt))
- TREE_USED (decl) = 1;
-
- /* Propagate the union's alignment to the elements. */
- DECL_ALIGN (decl_elt) = DECL_ALIGN (decl);
- DECL_USER_ALIGN (decl_elt) = DECL_USER_ALIGN (decl);
-
- /* If the element has BLKmode and the union doesn't, the union is
- aligned such that the element doesn't need to have BLKmode, so
- change the element's mode to the appropriate one for its size. */
- if (mode == BLKmode && DECL_MODE (decl) != BLKmode)
- DECL_MODE (decl_elt) = mode
- = mode_for_size_tree (DECL_SIZE (decl_elt), MODE_INT, 1);
-
- /* (SUBREG (MEM ...)) at RTL generation time is invalid, so we
- instead create a new MEM rtx with the proper mode. */
- if (MEM_P (x))
- {
- if (mode == GET_MODE (x))
- SET_DECL_RTL (decl_elt, x);
- else
- SET_DECL_RTL (decl_elt, adjust_address_nv (x, mode, 0));
- }
- else if (REG_P (x))
- {
- if (mode == GET_MODE (x))
- SET_DECL_RTL (decl_elt, x);
- else
- SET_DECL_RTL (decl_elt, gen_lowpart_SUBREG (mode, x));
- }
- else
- abort ();
- }
-}
-\f