diff options
Diffstat (limited to 'gcc/ira-int.h')
| -rw-r--r-- | gcc/ira-int.h | 39 |
1 files changed, 35 insertions, 4 deletions
diff --git a/gcc/ira-int.h b/gcc/ira-int.h index 6e66cc49572..5b8c1ef0bae 100644 --- a/gcc/ira-int.h +++ b/gcc/ira-int.h @@ -730,21 +730,24 @@ ira_allocno_set_iter_next (ira_allocno_set_iterator *i) extern HARD_REG_SET ira_reg_mode_hard_regset [FIRST_PSEUDO_REGISTER][NUM_MACHINE_MODES]; -/* Arrays analogous to macros MEMORY_MOVE_COST and - REGISTER_MOVE_COST. */ +/* Arrays analogous to macros MEMORY_MOVE_COST and REGISTER_MOVE_COST. + Don't use ira_register_move_cost directly. Use function of + ira_get_may_move_cost instead. */ extern short ira_memory_move_cost[MAX_MACHINE_MODE][N_REG_CLASSES][2]; extern move_table *ira_register_move_cost[MAX_MACHINE_MODE]; /* Similar to may_move_in_cost but it is calculated in IRA instead of regclass. Another difference we take only available hard registers into account to figure out that one register class is a subset of - the another one. */ + the another one. Don't use it directly. Use function of + ira_get_may_move_cost instead. */ extern move_table *ira_may_move_in_cost[MAX_MACHINE_MODE]; /* Similar to may_move_out_cost but it is calculated in IRA instead of regclass. Another difference we take only available hard registers into account to figure out that one register class is a subset of - the another one. */ + the another one. Don't use it directly. Use function of + ira_get_may_move_cost instead. */ extern move_table *ira_may_move_out_cost[MAX_MACHINE_MODE]; /* Register class subset relation: TRUE if the first class is a subset @@ -941,6 +944,34 @@ extern void ira_emit (bool); +/* Return cost of moving value of MODE from register of class FROM to + register of class TO. */ +static inline int +ira_get_register_move_cost (enum machine_mode mode, + enum reg_class from, enum reg_class to) +{ + if (ira_register_move_cost[mode] == NULL) + ira_init_register_move_cost (mode); + return ira_register_move_cost[mode][from][to]; +} + +/* Return cost of moving value of MODE from register of class FROM to + register of class TO. Return zero if IN_P is true and FROM is + subset of TO or if IN_P is false and FROM is superset of TO. */ +static inline int +ira_get_may_move_cost (enum machine_mode mode, + enum reg_class from, enum reg_class to, + bool in_p) +{ + if (ira_register_move_cost[mode] == NULL) + ira_init_register_move_cost (mode); + return (in_p + ? ira_may_move_in_cost[mode][from][to] + : ira_may_move_out_cost[mode][from][to]); +} + + + /* The iterator for all allocnos. */ typedef struct { /* The number of the current element in IRA_ALLOCNOS. */ |