+/** The generic be nodes attribute type. */
+typedef struct {
+ int max_reg_data;
+ be_reg_data_t *reg_data;
+} be_node_attr_t;
+
+/** The be_Stack attribute type. */
+typedef struct {
+ be_node_attr_t node_attr;
+ int offset; /**< The offset by which the stack shall be increased/decreased. */
+ be_stack_dir_t dir; /**< The direction in which the stack shall be modified (expand or shrink). */
+} be_stack_attr_t;
+
+/** The be_Frame attribute type. */
+typedef struct {
+ be_node_attr_t node_attr;
+ entity *ent;
+ int offset;
+} be_frame_attr_t;
+
+/** The be_Call attribute type. */
+typedef struct {
+ be_node_attr_t node_attr;
+ entity *ent; /**< The called entity if this is a static call. */
+ ir_type *call_tp; /**< The call type, copied from the original Call node. */
+} be_call_attr_t;
+
+/** The be_Spill attribute type. */
+typedef struct {
+ be_frame_attr_t frame_attr;
+ ir_node *spill_ctx; /**< The node in whose context this spill was introduced. */
+} be_spill_attr_t;
+
+ir_op *op_be_Spill;
+ir_op *op_be_Reload;
+ir_op *op_be_Perm;
+ir_op *op_be_Copy;
+ir_op *op_be_Keep;
+ir_op *op_be_CopyKeep;
+ir_op *op_be_Call;
+ir_op *op_be_Return;
+ir_op *op_be_IncSP;
+ir_op *op_be_AddSP;
+ir_op *op_be_SetSP;
+ir_op *op_be_RegParams;
+ir_op *op_be_StackParam;
+ir_op *op_be_FrameAddr;
+ir_op *op_be_FrameLoad;
+ir_op *op_be_FrameStore;
+ir_op *op_be_Barrier;
+
+static int beo_base = -1;
+
+static const ir_op_ops be_node_op_ops;
+
+#define N irop_flag_none
+#define L irop_flag_labeled
+#define C irop_flag_commutative
+#define X irop_flag_cfopcode
+#define I irop_flag_ip_cfopcode
+#define F irop_flag_fragile
+#define Y irop_flag_forking
+#define H irop_flag_highlevel
+#define c irop_flag_constlike
+#define K irop_flag_keep
+#define M irop_flag_machine
+
+
+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, "Spill", op_pin_state_mem_pinned, N, oparity_unary, 0, sizeof(be_spill_attr_t), &be_node_op_ops);
+ op_be_Reload = new_ir_op(beo_base + beo_Reload, "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, "Perm", op_pin_state_pinned, N, oparity_variable, 0, sizeof(be_node_attr_t), &be_node_op_ops);
+ op_be_Copy = new_ir_op(beo_base + beo_Copy, "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, "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, "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, "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, "Return", op_pin_state_pinned, X, oparity_variable, 0, sizeof(be_node_attr_t), &be_node_op_ops);
+ op_be_AddSP = new_ir_op(beo_base + beo_AddSP, "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, "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, "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, "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, "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, "FrameAddr", op_pin_state_pinned, N, oparity_binary, 0, sizeof(be_frame_attr_t), &be_node_op_ops);
+ op_be_FrameLoad = new_ir_op(beo_base + beo_FrameLoad, "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, "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, "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_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);
+}
+
+/**
+ * Initializes the generic attribute of all be nodes and return ir.
+ */
+static void *init_node_attr(ir_node* irn, int max_reg_data)
+{
+ ir_graph *irg = get_irn_irg(irn);
+ be_node_attr_t *a = get_irn_attr(irn);
+
+ memset(a, 0, sizeof(get_op_attr_size(get_irn_op(irn))));
+ a->max_reg_data = max_reg_data;
+ a->reg_data = NULL;
+
+ if(max_reg_data > 0) {
+ int i;
+
+ a->reg_data = NEW_ARR_D(be_reg_data_t, get_irg_obstack(irg), max_reg_data);
+ memset(a->reg_data, 0, max_reg_data * sizeof(a->reg_data[0]));
+ for(i = 0; i < max_reg_data; ++i) {
+ a->reg_data[i].req.req.cls = NULL;
+ a->reg_data[i].req.req.type = arch_register_req_type_none;
+ }
+ }
+
+ return a;
+}
+
+static INLINE int is_be_node(const ir_node *irn)
+{
+ return get_op_tag(get_irn_op(irn)) == &be_node_tag;
+}
+
+be_opcode_t be_get_irn_opcode(const ir_node *irn)
+{
+ return is_be_node(irn) ? get_irn_opcode(irn) - beo_base : beo_NoBeOp;
+}
+
+static int redir_proj(const ir_node **node, int pos)
+{
+ const ir_node *n = *node;
+
+ if(is_Proj(n)) {
+ ir_node *irn;
+
+ assert(pos == -1 && "Illegal pos for a Proj");
+ *node = irn = get_Proj_pred(n);
+ if(is_Proj(irn)) {
+ assert(get_irn_mode(irn) == mode_T);
+ *node = get_Proj_pred(irn);
+ }
+ return get_Proj_proj(n);
+ }
+
+ return 0;
+}
+
+static void
+be_node_set_irn_reg(const void *_self, ir_node *irn, const arch_register_t *reg)
+{
+ int out_pos;
+ be_node_attr_t *a;
+
+ out_pos = redir_proj((const ir_node **) &irn, -1);
+ a = get_irn_attr(irn);
+
+ assert(is_be_node(irn));
+ assert(out_pos < a->max_reg_data && "position too high");
+ a->reg_data[out_pos].reg = reg;
+}
+
+
+ir_node *be_new_Spill(const arch_register_class_t *cls, const arch_register_class_t *cls_frame, ir_graph *irg, ir_node *bl, ir_node *frame, ir_node *to_spill, ir_node *ctx)
+{
+ be_spill_attr_t *a;
+ ir_node *in[2];
+ ir_node *res;
+
+ in[0] = frame;
+ in[1] = to_spill;
+ res = new_ir_node(NULL, irg, bl, op_be_Spill, mode_M, 2, in);
+ a = init_node_attr(res, 2);
+ a->frame_attr.ent = NULL;
+ a->frame_attr.offset = 0;
+ a->spill_ctx = ctx;
+
+ be_node_set_reg_class(res, 0, cls_frame);
+ be_node_set_reg_class(res, 1, cls);
+ return res;
+}
+
+ir_node *be_new_Reload(const arch_register_class_t *cls, const arch_register_class_t *cls_frame, ir_graph *irg, ir_node *bl, ir_node *frame, ir_node *mem, ir_mode *mode)
+{
+ ir_node *in[2];
+ ir_node *res;
+
+ in[0] = frame;
+ in[1] = mem;
+ res = new_ir_node(NULL, irg, bl, op_be_Reload, mode, 2, in);
+ init_node_attr(res, 2);
+ be_node_set_reg_class(res, 0, cls_frame);
+ be_node_set_reg_class(res, -1, cls);
+ return res;
+}
+
+ir_node *(be_get_Reload_mem)(const ir_node *irn)
+{
+ assert(be_is_Reload(irn));
+ return get_irn_n(irn, be_pos_Reload_mem);
+}
+
+ir_node *be_new_Perm(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, int n, ir_node *in[])
+{
+ int i;
+ ir_node *irn = new_ir_node(NULL, irg, bl, op_be_Perm, mode_T, n, in);
+ init_node_attr(irn, n);
+ for(i = 0; i < n; ++i) {
+ be_node_set_reg_class(irn, i, cls);
+ be_node_set_reg_class(irn, OUT_POS(i), cls);
+ }
+
+ return irn;
+}
+
+ir_node *be_new_Copy(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, ir_node *op)
+{
+ ir_node *in[1];
+ ir_node *res;
+
+ in[0] = op;
+ res = new_ir_node(NULL, irg, bl, op_be_Copy, get_irn_mode(op), 1, in);
+ init_node_attr(res, 1);
+ be_node_set_reg_class(res, 0, cls);
+ be_node_set_reg_class(res, OUT_POS(0), cls);
+ return res;
+}
+
+ir_node *be_new_Keep(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, int n, ir_node *in[])
+{
+ int i;
+ ir_node *irn;
+
+ irn = new_ir_node(NULL, irg, bl, op_be_Keep, mode_ANY, n, in);
+ init_node_attr(irn, n);
+ for(i = 0; i < n; ++i) {
+ be_node_set_reg_class(irn, i, cls);
+ }
+ keep_alive(irn);
+ return irn;
+}
+
+ir_node *be_new_Call(dbg_info *dbg, ir_graph *irg, ir_node *bl, ir_node *mem, ir_node *sp, ir_node *ptr,
+ int n_outs, int n, ir_node *in[], ir_type *call_tp)
+{
+ be_call_attr_t *a;
+ int real_n = be_pos_Call_first_arg + n;
+ ir_node *irn;
+ ir_node **real_in;
+
+ NEW_ARR_A(ir_node *, real_in, real_n);
+ real_in[be_pos_Call_mem] = mem;
+ real_in[be_pos_Call_sp] = sp;
+ real_in[be_pos_Call_ptr] = ptr;
+ memcpy(&real_in[be_pos_Call_first_arg], in, n * sizeof(in[0]));
+
+ irn = new_ir_node(NULL, irg, bl, op_be_Call, mode_T, real_n, real_in);
+ a = init_node_attr(irn, (n_outs > real_n ? n_outs : real_n));
+ a->ent = NULL;
+ a->call_tp = call_tp;
+ return irn;
+}
+
+/* Gets the call entity or NULL if this is no static call. */
+entity *be_Call_get_entity(const ir_node *call) {
+ be_call_attr_t *a = get_irn_attr(call);
+ assert(be_is_Call(call));
+ return a->ent;
+}
+
+/* Sets the call entity. */
+void be_Call_set_entity(ir_node *call, entity *ent) {
+ be_call_attr_t *a = get_irn_attr(call);
+ assert(be_is_Call(call));
+ a->ent = ent;
+}
+
+/* Gets the call type. */
+ir_type *be_Call_get_type(ir_node *call) {
+ be_call_attr_t *a = get_irn_attr(call);
+ assert(be_is_Call(call));
+ return a->call_tp;
+}
+
+/* Sets the call type. */
+void be_Call_set_type(ir_node *call, ir_type *call_tp) {
+ be_call_attr_t *a = get_irn_attr(call);
+ assert(be_is_Call(call));
+ a->call_tp = call_tp;
+}
+
+
+ir_node *be_new_Return(dbg_info *dbg, ir_graph *irg, ir_node *bl, int n, ir_node *in[])
+{
+ ir_node *irn = new_ir_node(dbg, irg, bl, op_be_Return, mode_X, n, in);
+ init_node_attr(irn, n);
+
+ return irn;
+}
+
+ir_node *be_new_IncSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *mem, unsigned offset, be_stack_dir_t dir)
+{
+ be_stack_attr_t *a;
+ ir_node *irn;
+ ir_node *in[1];
+
+ in[0] = old_sp;
+ in[1] = mem;
+ irn = new_ir_node(NULL, irg, bl, op_be_IncSP, sp->reg_class->mode, 2, in);
+ a = init_node_attr(irn, 1);
+ a->dir = dir;
+ a->offset = offset;
+
+ be_node_set_flags(irn, -1, arch_irn_flags_ignore);
+
+ /* Set output constraint to stack register. */
+ be_node_set_reg_class(irn, 0, sp->reg_class);
+ be_set_constr_single_reg(irn, -1, sp);
+ be_node_set_irn_reg(NULL, irn, sp);
+
+ return irn;
+}
+
+ir_node *be_new_AddSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *sz)
+{
+ be_node_attr_t *a;
+ ir_node *irn;
+ ir_node *in[be_pos_AddSP_last];
+
+ in[be_pos_AddSP_old_sp] = old_sp;
+ in[be_pos_AddSP_size] = sz;
+
+ irn = new_ir_node(NULL, irg, bl, op_be_AddSP, mode_T, be_pos_AddSP_last, in);
+ a = init_node_attr(irn, be_pos_AddSP_last);
+
+ be_node_set_flags(irn, OUT_POS(0), arch_irn_flags_ignore);
+
+ /* Set output constraint to stack register. */
+ be_set_constr_single_reg(irn, OUT_POS(0), sp);
+
+ return irn;
+}
+
+ir_node *be_new_SetSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *op, ir_node *mem)
+{
+ be_node_attr_t *a;
+ ir_node *irn;
+ ir_node *in[3];
+
+ in[0] = mem;
+ in[1] = old_sp;
+ in[2] = op;
+ irn = new_ir_node(NULL, irg, bl, op_be_SetSP, get_irn_mode(old_sp), 3, in);
+ a = init_node_attr(irn, 3);
+
+ be_node_set_flags(irn, OUT_POS(0), arch_irn_flags_ignore);
+
+ /* Set output constraint to stack register. */
+ be_set_constr_single_reg(irn, OUT_POS(0), sp);
+ be_node_set_reg_class(irn, 1, sp->reg_class);
+ be_node_set_reg_class(irn, 2, sp->reg_class);
+ be_node_set_irn_reg(NULL, irn, sp);
+
+ return irn;
+}
+
+ir_node *be_new_StackParam(const arch_register_class_t *cls, const arch_register_class_t *cls_frame, ir_graph *irg, ir_node *bl, ir_mode *mode, ir_node *frame_pointer, entity *ent)
+{
+ be_frame_attr_t *a;
+ ir_node *irn;
+ ir_node *in[1];
+
+ in[0] = frame_pointer;
+ irn = new_ir_node(NULL, irg, bl, op_be_StackParam, mode, 1, in);
+ a = init_node_attr(irn, 1);
+ a->ent = ent;
+
+ be_node_set_reg_class(irn, 0, cls_frame);
+ be_node_set_reg_class(irn, OUT_POS(0), cls);
+ return irn;
+}
+
+ir_node *be_new_RegParams(ir_graph *irg, ir_node *bl, int n_outs)
+{
+ ir_node *irn;
+ ir_node *in[1];
+
+ irn = new_ir_node(NULL, irg, bl, op_be_RegParams, mode_T, 0, in);
+ init_node_attr(irn, n_outs);
+ return irn;
+}
+
+ir_node *be_new_FrameLoad(const arch_register_class_t *cls_frame, const arch_register_class_t *cls_data,
+ ir_graph *irg, ir_node *bl, ir_node *mem, ir_node *frame, entity *ent)
+{
+ be_frame_attr_t *a;
+ ir_node *irn;
+ ir_node *in[2];
+
+ in[0] = mem;
+ in[1] = frame;
+ irn = new_ir_node(NULL, irg, bl, op_be_FrameLoad, mode_T, 2, in);
+ a = init_node_attr(irn, 3);
+ a->ent = ent;
+ a->offset = 0;
+ be_node_set_reg_class(irn, 1, cls_frame);
+ be_node_set_reg_class(irn, OUT_POS(pn_Load_res), cls_data);
+ return irn;
+}
+
+ir_node *be_new_FrameStore(const arch_register_class_t *cls_frame, const arch_register_class_t *cls_data,
+ ir_graph *irg, ir_node *bl, ir_node *mem, ir_node *frame, ir_node *data, entity *ent)
+{
+ be_frame_attr_t *a;
+ ir_node *irn;
+ ir_node *in[3];
+
+ in[0] = mem;
+ in[1] = frame;
+ in[2] = data;
+ irn = new_ir_node(NULL, irg, bl, op_be_FrameStore, mode_T, 3, in);
+ a = init_node_attr(irn, 3);
+ a->ent = ent;
+ a->offset = 0;
+ be_node_set_reg_class(irn, 1, cls_frame);
+ be_node_set_reg_class(irn, 2, cls_data);
+ return irn;
+}
+
+ir_node *be_new_FrameAddr(const arch_register_class_t *cls_frame, ir_graph *irg, ir_node *bl, ir_node *frame, entity *ent)
+{
+ be_frame_attr_t *a;
+ ir_node *irn;
+ ir_node *in[1];
+
+ in[0] = frame;
+ irn = new_ir_node(NULL, irg, bl, op_be_FrameAddr, get_irn_mode(frame), 1, in);
+ a = init_node_attr(irn, 1);
+ a->ent = ent;
+ a->offset = 0;
+ be_node_set_reg_class(irn, 0, cls_frame);
+ be_node_set_reg_class(irn, OUT_POS(0), cls_frame);
+ return irn;
+}
+
+ir_node *be_new_CopyKeep(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, ir_node *src, int n, ir_node *in_keep[], ir_mode *mode)
+{
+ ir_node *irn;
+ ir_node **in = (ir_node **) alloca((n + 1) * sizeof(in[0]));
+
+ in[0] = src;
+ memcpy(&in[1], in_keep, n * sizeof(in[0]));
+ irn = new_ir_node(NULL, irg, bl, op_be_CopyKeep, mode, n + 1, in);
+ init_node_attr(irn, n + 1);
+ be_node_set_reg_class(irn, OUT_POS(0), cls);
+ be_node_set_reg_class(irn, 0, cls);
+
+ return irn;
+}
+
+ir_node *be_new_CopyKeep_single(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, ir_node *src, ir_node *keep, ir_mode *mode)
+{
+ ir_node *in[1];
+
+ in[0] = keep;
+ return be_new_CopyKeep(cls, irg, bl, src, 1, in, mode);
+}
+
+ir_node *be_new_Barrier(ir_graph *irg, ir_node *bl, int n, ir_node *in[])
+{
+ ir_node *irn;
+
+ irn = new_ir_node(NULL, irg, bl, op_be_Barrier, mode_T, n, in);
+ init_node_attr(irn, n);
+ return irn;
+}
+
+int be_is_Spill (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_Spill ; }
+int be_is_Reload (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_Reload ; }
+int be_is_Copy (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_Copy ; }
+int be_is_Perm (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_Perm ; }
+int be_is_Keep (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_Keep ; }
+int be_is_Call (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_Call ; }
+int be_is_Return (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_Return ; }
+int be_is_IncSP (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_IncSP ; }
+int be_is_SetSP (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_SetSP ; }
+int be_is_AddSP (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_AddSP ; }
+int be_is_RegParams (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_RegParams ; }
+int be_is_StackParam (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_StackParam ; }
+int be_is_FrameAddr (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_FrameAddr ; }
+int be_is_FrameLoad (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_FrameLoad ; }
+int be_is_FrameStore (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_FrameStore ; }
+int be_is_Barrier (const ir_node *irn) { return be_get_irn_opcode(irn) == beo_Barrier ; }
+
+int be_has_frame_entity(const ir_node *irn)
+{
+ switch(be_get_irn_opcode(irn)) {
+ case beo_StackParam:
+ case beo_Spill:
+ case beo_Reload:
+ case beo_FrameStore:
+ case beo_FrameLoad:
+ case beo_FrameAddr:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+entity *be_get_frame_entity(const ir_node *irn)
+{
+ if(be_has_frame_entity(irn)) {
+ be_frame_attr_t *a = get_irn_attr(irn);
+ return a->ent;
+ }
+ return NULL;
+}
+
+static void be_limited(void *data, bitset_t *bs)
+{
+ be_req_t *req = data;
+
+ switch(req->kind) {
+ case be_req_kind_negate_old_limited:
+ case be_req_kind_old_limited:
+ req->x.old_limited.old_limited(req->x.old_limited.old_limited_env, bs);
+ if(req->kind == be_req_kind_negate_old_limited)
+ bitset_flip_all(bs);
+ break;
+ case be_req_kind_single_reg:
+ bitset_clear_all(bs);
+ bitset_set(bs, req->x.single_reg->index);
+ break;
+ }
+}
+
+static INLINE be_req_t *get_req(ir_node *irn, int pos)
+{
+ int idx = pos < 0 ? -(pos + 1) : pos;
+ be_node_attr_t *a = get_irn_attr(irn);
+ be_reg_data_t *rd = &a->reg_data[idx];
+ be_req_t *r = pos < 0 ? &rd->req : &rd->in_req;
+
+ assert(is_be_node(irn));
+ assert(!(pos >= 0) || pos < get_irn_arity(irn));
+ assert(!(pos < 0) || -(pos + 1) <= a->max_reg_data);
+
+ return r;
+}
+
+void be_set_constr_single_reg(ir_node *irn, int pos, const arch_register_t *reg)
+{
+ be_req_t *r = get_req(irn, pos);
+
+ r->kind = be_req_kind_single_reg;
+ r->x.single_reg = reg;
+ r->req.limited = be_limited;
+ r->req.limited_env = r;
+ r->req.type = arch_register_req_type_limited;
+ r->req.cls = reg->reg_class;
+}
+
+void be_set_constr_limited(ir_node *irn, int pos, const arch_register_req_t *req)
+{
+ be_req_t *r = get_req(irn, pos);
+
+ assert(arch_register_req_is(req, limited));