-/* Within a MEM_EXPR, we care about either (1) a component ref of a decl,
- or (2) a component ref of something variable. Represent the later with
- a NULL expression. */
-
-static tree
-component_ref_for_mem_expr (tree ref)
-{
- tree inner = TREE_OPERAND (ref, 0);
-
- if (TREE_CODE (inner) == COMPONENT_REF)
- inner = component_ref_for_mem_expr (inner);
- else
- {
- /* Now remove any conversions: they don't change what the underlying
- object is. Likewise for SAVE_EXPR. */
- while (CONVERT_EXPR_P (inner)
- || TREE_CODE (inner) == VIEW_CONVERT_EXPR
- || TREE_CODE (inner) == SAVE_EXPR)
- inner = TREE_OPERAND (inner, 0);
-
- if (! DECL_P (inner))
- inner = NULL_TREE;
- }
-
- if (inner == TREE_OPERAND (ref, 0))
- return ref;
- else
- return build3 (COMPONENT_REF, TREE_TYPE (ref), inner,
- TREE_OPERAND (ref, 1), NULL_TREE);
-}
-