+/**
+ * Compare two node attributes.
+ *
+ * @return zero if both attributes are identically
+ */
+static int cmp_node_attr(be_node_attr_t *a, be_node_attr_t *b) {
+ if (a->max_reg_data == b->max_reg_data) {
+ int i;
+
+ for (i = 0; i < a->max_reg_data; ++i) {
+ if (a->reg_data[i].reg != b->reg_data[i].reg ||
+ memcmp(&a->reg_data[i].in_req, &b->reg_data[i].in_req, sizeof(b->reg_data[i].in_req)) ||
+ memcmp(&a->reg_data[i].req, &b->reg_data[i].req, sizeof(a->reg_data[i].req)))
+ return 1;
+ }
+ return 0;
+ }
+ return 1;
+}
+
+/**
+ * Compare the attributes of two FrameAddr nodes.
+ *
+ * @return zero if both attributes are identically
+ */
+static int FrameAddr_cmp_attr(ir_node *a, ir_node *b) {
+ be_frame_attr_t *a_attr = get_irn_attr(a);
+ be_frame_attr_t *b_attr = get_irn_attr(b);
+
+ if (a_attr->ent == b_attr->ent && a_attr->offset == b_attr->offset)
+ return cmp_node_attr(&a_attr->node_attr, &b_attr->node_attr);
+ return 1;
+}
+
+void be_node_init(void) {
+ static int inited = 0;
+
+ if(inited)
+ return;
+
+ inited = 1;
+
+ /* Acquire all needed opcodes. */
+ beo_base = get_next_ir_opcodes(beo_Last - 1);
+
+ op_be_Spill = new_ir_op(beo_base + beo_Spill, "be_Spill", op_pin_state_mem_pinned, N, oparity_unary, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
+ op_be_Reload = new_ir_op(beo_base + beo_Reload, "be_Reload", op_pin_state_mem_pinned, N, oparity_zero, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
+ op_be_Perm = new_ir_op(beo_base + beo_Perm, "be_Perm", op_pin_state_pinned, N, oparity_variable, 0, sizeof(be_node_attr_t), &be_node_op_ops);
+ op_be_MemPerm = new_ir_op(beo_base + beo_MemPerm, "be_MemPerm", op_pin_state_mem_pinned, N, oparity_variable, 0, sizeof(be_memperm_attr_t), &be_node_op_ops);
+ op_be_Copy = new_ir_op(beo_base + beo_Copy, "be_Copy", op_pin_state_floats, N, oparity_unary, 0, sizeof(be_node_attr_t), &be_node_op_ops);
+ op_be_Keep = new_ir_op(beo_base + beo_Keep, "be_Keep", op_pin_state_pinned, K, oparity_variable, 0, sizeof(be_node_attr_t), &be_node_op_ops);
+ op_be_CopyKeep = new_ir_op(beo_base + beo_CopyKeep, "be_CopyKeep", op_pin_state_pinned, K, oparity_variable, 0, sizeof(be_node_attr_t), &be_node_op_ops);
+ op_be_Call = new_ir_op(beo_base + beo_Call, "be_Call", op_pin_state_pinned, N, oparity_variable, 0, sizeof(be_call_attr_t), &be_node_op_ops);
+ op_be_Return = new_ir_op(beo_base + beo_Return, "be_Return", op_pin_state_pinned, X, oparity_variable, 0, sizeof(be_return_attr_t), &be_node_op_ops);
+ op_be_AddSP = new_ir_op(beo_base + beo_AddSP, "be_AddSP", op_pin_state_pinned, N, oparity_unary, 0, sizeof(be_node_attr_t), &be_node_op_ops);
+ op_be_SetSP = new_ir_op(beo_base + beo_SetSP, "be_SetSP", op_pin_state_pinned, N, oparity_binary, 0, sizeof(be_stack_attr_t), &be_node_op_ops);
+ op_be_IncSP = new_ir_op(beo_base + beo_IncSP, "be_IncSP", op_pin_state_pinned, N, oparity_binary, 0, sizeof(be_stack_attr_t), &be_node_op_ops);
+ op_be_RegParams = new_ir_op(beo_base + beo_RegParams, "be_RegParams", op_pin_state_pinned, N, oparity_zero, 0, sizeof(be_node_attr_t), &be_node_op_ops);
+ op_be_StackParam = new_ir_op(beo_base + beo_StackParam, "be_StackParam", op_pin_state_pinned, N, oparity_unary, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
+ op_be_FrameAddr = new_ir_op(beo_base + beo_FrameAddr, "be_FrameAddr", op_pin_state_pinned, N, oparity_unary, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
+ op_be_FrameLoad = new_ir_op(beo_base + beo_FrameLoad, "be_FrameLoad", op_pin_state_pinned, N, oparity_any, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
+ op_be_FrameStore = new_ir_op(beo_base + beo_FrameStore, "be_FrameStore", op_pin_state_pinned, N, oparity_any, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
+ op_be_Barrier = new_ir_op(beo_base + beo_Barrier, "be_Barrier", op_pin_state_pinned, N, oparity_any, 0, sizeof(be_node_attr_t), &be_node_op_ops);
+
+ set_op_tag(op_be_Spill, &be_node_tag);
+ set_op_tag(op_be_Reload, &be_node_tag);
+ set_op_tag(op_be_Perm, &be_node_tag);
+ set_op_tag(op_be_MemPerm, &be_node_tag);
+ set_op_tag(op_be_Copy, &be_node_tag);
+ set_op_tag(op_be_Keep, &be_node_tag);
+ set_op_tag(op_be_CopyKeep, &be_node_tag);
+ set_op_tag(op_be_Call, &be_node_tag);
+ set_op_tag(op_be_Return, &be_node_tag);
+ set_op_tag(op_be_AddSP, &be_node_tag);
+ set_op_tag(op_be_SetSP, &be_node_tag);
+ set_op_tag(op_be_IncSP, &be_node_tag);
+ set_op_tag(op_be_RegParams, &be_node_tag);
+ set_op_tag(op_be_StackParam, &be_node_tag);
+ set_op_tag(op_be_FrameLoad, &be_node_tag);
+ set_op_tag(op_be_FrameStore, &be_node_tag);
+ set_op_tag(op_be_FrameAddr, &be_node_tag);
+ set_op_tag(op_be_Barrier, &be_node_tag);
+
+ op_be_FrameAddr->ops.node_cmp_attr = FrameAddr_cmp_attr;
+}
+
+/**
+ * Initializes the generic attribute of all be nodes and return ir.
+ */
+static void *init_node_attr(ir_node* irn, int max_reg_data)