new_node->attr.block.block_visited = 0;
memset(&new_node->attr.block.dom, 0, sizeof(new_node->attr.block.dom));
memset(&new_node->attr.block.pdom, 0, sizeof(new_node->attr.block.pdom));
- /* TODO: we should probably create a new entity. But we somehow have to
- * patch the stuff at the same time */
- new_node->attr.block.entity = NULL;
- new_node->attr.block.phis = NULL;
+ /* It should be safe to copy the entity here, as it has no back-link to the old block.
+ * It serves just as a label number, so copying a labeled block results in an exact copy.
+ * This is at least what we need for DCE to work. */
+ new_node->attr.block.entity = old_node->attr.block.entity;
+ new_node->attr.block.phis = NULL;
INIT_LIST_HEAD(&new_node->attr.block.succ_head);
}
res->tag = 0;
if (ops)
- memcpy(&res->ops, ops, sizeof(res->ops));
+ res->ops = *ops;
else /* no given ops, set all operations to NULL */
memset(&res->ops, 0, sizeof(res->ops));
free(code);
} /* free_ir_op */
+void ir_op_set_fragile_indices(ir_op *op, int fragile_mem_index,
+ int pn_x_regular, int pn_x_except)
+{
+ op->fragile_mem_index = fragile_mem_index;
+ op->pn_x_regular = pn_x_regular;
+ op->pn_x_except = pn_x_except;
+}
+
/* Returns the string for the opcode. */
const char *get_op_name (const ir_op *op)
{