4 * @author Sebastian Hack
6 * Backend node support.
8 * Copyright (C) 2005 Universitaet Karlsruhe
9 * Released under the GPL
15 #include "firm_config.h"
42 be_stack_dir_along = 0,
43 be_stack_dir_against = 1
46 void be_node_init(void);
48 const arch_irn_handler_t be_node_irn_handler;
50 ir_node *be_new_Spill(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, ir_node *node_to_spill, ir_node *ctx);
51 ir_node *be_new_Reload(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, ir_mode *mode, ir_node *spill_node);
52 ir_node *be_new_Copy(const arch_register_class_t *cls, ir_graph *irg, ir_node *block, ir_node *in);
53 ir_node *be_new_Perm(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, int arity, ir_node *in[]);
54 ir_node *be_new_Keep(const arch_register_class_t *cls, ir_graph *irg, ir_node *bl, int arity, ir_node *in[]);
56 ir_node *be_new_AddSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, ir_node *operand);
59 * Make a stack pointer increase/decrease node.
60 * @param sp The stack poitner register.
61 * @param irg The graph to insert the node to.
62 * @param bl The block to insert the node into.
63 * @param old_sp The node defining the former stack pointer.
64 * @param amount The mount of bytes the stack pointer shall be increased/decreased.
65 * @param dir The direction in which the stack pointer shall be modified:
66 * Along the stack's growing direction or against.
67 * @return A new stack pointer increment/decrement node.
68 * @note This node sets a register constraint to the @p sp register on its output.
70 ir_node *be_new_IncSP(const arch_register_t *sp, ir_graph *irg, ir_node *bl, ir_node *old_sp, unsigned amount, be_stack_dir_t dir);
72 void be_set_IncSP_offset(ir_node *irn, unsigned offset);
73 unsigned be_get_IncSP_offset(ir_node *irn);
75 void be_set_IncSP_direction(ir_node *irn, be_stack_dir_t dir);
76 be_stack_dir_t be_get_IncSP_direction(ir_node *irn);
78 ir_node *be_new_Call(ir_graph *irg, ir_node *bl, ir_node *mem, ir_node *sp, ir_node *ptr, int n_outs, int n, ir_node *in[]);
79 ir_node *be_new_StackParam(ir_graph *irg);
80 ir_node *be_new_RegParams(ir_graph *irg, int n_out);
81 ir_node *be_new_NoReg(const arch_register_t *reg, ir_graph *irg, ir_node *bl);
83 ir_node *be_spill(const arch_env_t *arch_env, ir_node *irn,ir_node *spill_ctx);
84 ir_node *be_reload(const arch_env_t *arch_env, const arch_register_class_t *cls, ir_node *irn, int pos, ir_mode *mode, ir_node *spill);
86 int be_is_Spill(const ir_node *irn);
87 int be_is_Reload(const ir_node *irn);
88 int be_is_Copy(const ir_node *irn);
89 int be_is_Perm(const ir_node *irn);
90 int be_is_Keep(const ir_node *irn);
91 int be_is_Call(const ir_node *irn);
92 int be_is_AddSP(const ir_node *irn);
93 int be_is_IncSP(const ir_node *irn);
96 void be_set_Spill_entity(ir_node *irn, entity *ent);
97 entity *be_get_spill_entity(ir_node *irn);
99 ir_node *be_get_Spill_context(const ir_node *irn);
102 * Impose a register constraint on a backend node.
103 * @param irn The node.
104 * @param pos The position of the argument/result. Results range from -1..-m and arguments form 0..n
105 * @param reg The register which is admissible for that node, argument/result and position.
107 void be_set_constr_single_reg(ir_node *irn, int pos, const arch_register_t *reg);
110 * Impose register constraints on a backend node.
111 * The register subsets given by the limited function in @p req are copied to the backend node.
112 * This requires that the constraint type of the @p req is arch_register_req_type_limited.
113 * @param irn The backend node.
114 * @param pos The position (@see be_set_constr_single_reg()).
115 * @param req The register requirements which shall be transferred.
117 void be_set_constr_limited(ir_node *irn, int pos, const arch_register_req_t *req);
120 * Insert a Perm node after a specific node in the schedule.
121 * The Perm permutes over all values live at the given node.
122 * This means that all liveness intervals are cut apart at this
123 * location in the program.
125 ir_node *insert_Perm_after(const arch_env_t *env,
126 const arch_register_class_t *cls,
127 dom_front_info_t *dom_front,
131 #endif /* _BENODE_T_H */