4 * A data structure to treat nodes and node-proj collections uniformly.
14 typedef struct _be_operand_t be_operand_t;
15 typedef struct _be_insn_t be_insn_t;
16 typedef struct _be_insn_env_t be_insn_env_t;
18 struct _be_operand_t {
19 ir_node *irn; /**< firm node of the insn this operand blongs to */
20 ir_node *carrier; /**< node representing the operand value (proj or the node itself for defs, the value itself for uses */
21 be_operand_t *partner; /**< used in bechordal later... (TODO what does it do?) */
22 bitset_t *regs; /**< admissible register bitset */
23 int pos; /**< pos of the operand (0 to n are inputs, -1 to -n are outputs) */
24 const arch_register_req_t *req; /**< register constraints for the carrier node */
25 unsigned has_constraints : 1; /**< the carrier node has register constraints (the constraint type is limited) */
29 be_operand_t *ops; /**< the values used and defined by the insn */
30 int n_ops; /**< length of the ops array */
31 int use_start; /**< entries [0-use_start) in ops are defs,
32 [use_start-n_ops) uses */
33 ir_node *next_insn; /**< next instruction in schedule */
34 ir_node *irn; /**< ir_node of the instruction */
35 unsigned in_constraints : 1; /**< instruction has input contraints */
36 unsigned out_constraints : 1; /**< instruction has output constraints */
37 unsigned has_constraints : 1; /**< in_constraints or out_constraints true */
38 unsigned pre_colored : 1; /**< all defined values already have a register assigned */
41 struct _be_insn_env_t {
43 const arch_env_t *aenv;
44 const arch_register_class_t *cls;
45 bitset_t *ignore_colors;
48 #define be_insn_n_defs(insn) ((insn)->use_start)
49 #define be_insn_n_uses(insn) ((insn)->n_ops - (insn)->use_start)
51 be_insn_t *be_scan_insn(const be_insn_env_t *env, ir_node *irn);
53 be_insn_env_t *be_insn_env_init(be_insn_env_t *ie, const be_irg_t *birg, const arch_register_class_t *cls, struct obstack *obst);
55 #endif /* _BEINSN_T_H */