#ifndef GCC_REGS_H
#define GCC_REGS_H
-#include "varray.h"
#include "obstack.h"
#include "hard-reg-set.h"
#include "basic-block.h"
#define REGMODE_NATURAL_SIZE(MODE) UNITS_PER_WORD
#endif
-#ifndef SMALL_REGISTER_CLASSES
-#define SMALL_REGISTER_CLASSES 0
-#endif
-
/* Maximum register number used in this function, plus one. */
extern int max_regno;
and is not using incremental df scanning.
At the end of a pass that uses REG_N_REFS and REG_N_SETS, a call
- should be made to regstat_free_n_sets_and_refs.
+ should be made to regstat_free_n_sets_and_refs.
Local alloc seems to play pretty loose with these values.
REG_N_REFS is set to 0 if the register is used in an asm.
#define HARD_REGNO_CALL_PART_CLOBBERED(REGNO, MODE) 0
#endif
+/* 1 if the corresponding class does contain register of given
+ mode. */
+extern char contains_reg_of_mode [N_REG_CLASSES] [MAX_MACHINE_MODE];
+
+typedef unsigned short move_table[N_REG_CLASSES];
+
+/* Maximum cost of moving from a register in one class to a register
+ in another class. */
+extern move_table *move_cost[MAX_MACHINE_MODE];
+
/* Specify number of hard registers given machine mode occupy. */
extern unsigned char hard_regno_nregs[FIRST_PSEUDO_REGISTER][MAX_MACHINE_MODE];
+/* Similar, but here we don't have to move if the first index is a
+ subset of the second so in that case the cost is zero. */
+extern move_table *may_move_in_cost[MAX_MACHINE_MODE];
+
+/* Similar, but here we don't have to move if the first index is a
+ superset of the second so in that case the cost is zero. */
+extern move_table *may_move_out_cost[MAX_MACHINE_MODE];
+
/* Return an exclusive upper bound on the registers occupied by hard
register (reg:MODE REGNO). */