along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
-/* Function specific hard registers can not be used for the register
- allocation. */
-extern HARD_REG_SET ira_no_alloc_regs;
-
/* True if we have allocno conflicts. It is false for non-optimized
mode or when the conflict table is too big. */
extern bool ira_conflicts_p;
allocation for given classes. */
int x_ira_available_class_regs[N_REG_CLASSES];
- /* Map: hard register number -> cover class it belongs to. If the
+ /* Map: hard register number -> allocno class it belongs to. If the
corresponding class is NO_REGS, the hard register is not available
for allocation. */
- enum reg_class x_ira_hard_regno_cover_class[FIRST_PSEUDO_REGISTER];
+ enum reg_class x_ira_hard_regno_allocno_class[FIRST_PSEUDO_REGISTER];
- /* Number of cover classes. Cover classes is non-intersected register
- classes containing all hard-registers available for the
- allocation. */
- int x_ira_reg_class_cover_size;
+ /* Number of allocno classes. Allocno classes are register classes
+ which can be used for allocations of allocnos. */
+ int x_ira_allocno_classes_num;
+
+ /* The array containing allocno classes. Only first
+ IRA_ALLOCNO_CLASSES_NUM elements are used for this. */
+ enum reg_class x_ira_allocno_classes[N_REG_CLASSES];
- /* The array containing cover classes (see also comments for macro
- IRA_COVER_CLASSES;. Only first IRA_REG_CLASS_COVER_SIZE elements are
- used for this. */
- enum reg_class x_ira_reg_class_cover[N_REG_CLASSES];
+ /* Map of all register classes to corresponding allocno classes
+ containing the given class. If given class is not a subset of an
+ allocno class, we translate it into the cheapest allocno class. */
+ enum reg_class x_ira_allocno_class_translate[N_REG_CLASSES];
- /* Map of all register classes to corresponding cover class containing
- the given class. If given class is not a subset of a cover class,
- we translate it into the cheapest cover class. */
- enum reg_class x_ira_class_translate[N_REG_CLASSES];
+ /* Number of pressure classes. Pressure classes are register
+ classes for which we calculate register pressure. */
+ int x_ira_pressure_classes_num;
- /* Map: register class x machine mode -> number of hard registers of
- given class needed to store value of given mode. If the number for
- some hard-registers of the register class is different, the size
- will be negative. */
- int x_ira_reg_class_nregs[N_REG_CLASSES][MAX_MACHINE_MODE];
+ /* The array containing pressure classes. Only first
+ IRA_PRESSURE_CLASSES_NUM elements are used for this. */
+ enum reg_class x_ira_pressure_classes[N_REG_CLASSES];
+
+ /* Map of all register classes to corresponding pressure classes
+ containing the given class. If given class is not a subset of an
+ pressure class, we translate it into the cheapest pressure
+ class. */
+ enum reg_class x_ira_pressure_class_translate[N_REG_CLASSES];
+
+ /* Bigest pressure register class containing stack registers.
+ NO_REGS if there are no stack registers. */
+ enum reg_class x_ira_stack_reg_pressure_class;
+
+ /* Maps: register class x machine mode -> maximal/minimal number of
+ hard registers of given class needed to store value of given
+ mode. */
+ unsigned char x_ira_reg_class_max_nregs[N_REG_CLASSES][MAX_MACHINE_MODE];
+ unsigned char x_ira_reg_class_min_nregs[N_REG_CLASSES][MAX_MACHINE_MODE];
/* Array analogous to target hook TARGET_MEMORY_MOVE_COST. */
short x_ira_memory_move_cost[MAX_MACHINE_MODE][N_REG_CLASSES][2];
/* The number of elements of the above array for given register
class. */
int x_ira_class_hard_regs_num[N_REG_CLASSES];
+
+ /* Function specific hard registers can not be used for the register
+ allocation. */
+ HARD_REG_SET x_ira_no_alloc_regs;
};
extern struct target_ira default_target_ira;
#define ira_available_class_regs \
(this_target_ira->x_ira_available_class_regs)
-#define ira_hard_regno_cover_class \
- (this_target_ira->x_ira_hard_regno_cover_class)
-#define ira_reg_class_cover_size \
- (this_target_ira->x_ira_reg_class_cover_size)
-#define ira_reg_class_cover \
- (this_target_ira->x_ira_reg_class_cover)
-#define ira_class_translate \
- (this_target_ira->x_ira_class_translate)
-#define ira_reg_class_nregs \
- (this_target_ira->x_ira_reg_class_nregs)
+#define ira_hard_regno_allocno_class \
+ (this_target_ira->x_ira_hard_regno_allocno_class)
+#define ira_allocno_classes_num \
+ (this_target_ira->x_ira_allocno_classes_num)
+#define ira_allocno_classes \
+ (this_target_ira->x_ira_allocno_classes)
+#define ira_allocno_class_translate \
+ (this_target_ira->x_ira_allocno_class_translate)
+#define ira_pressure_classes_num \
+ (this_target_ira->x_ira_pressure_classes_num)
+#define ira_pressure_classes \
+ (this_target_ira->x_ira_pressure_classes)
+#define ira_pressure_class_translate \
+ (this_target_ira->x_ira_pressure_class_translate)
+#define ira_stack_reg_pressure_class \
+ (this_target_ira->x_ira_stack_reg_pressure_class)
+#define ira_reg_class_max_nregs \
+ (this_target_ira->x_ira_reg_class_max_nregs)
+#define ira_reg_class_min_nregs \
+ (this_target_ira->x_ira_reg_class_min_nregs)
#define ira_memory_move_cost \
(this_target_ira->x_ira_memory_move_cost)
#define ira_class_hard_regs \
(this_target_ira->x_ira_class_hard_regs)
#define ira_class_hard_regs_num \
(this_target_ira->x_ira_class_hard_regs_num)
+#define ira_no_alloc_regs \
+ (this_target_ira->x_ira_no_alloc_regs)
extern void ira_init_once (void);
extern void ira_init (void);
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