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52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
#ifndef COMPILER_REGISTERS_H
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#define COMPILER_REGISTERS_H
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#include "compiler/common.h"
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enum {
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RegisterInvalid = -1,
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Register0 = 0,
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Register2 = 2,
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Register3 = 3,
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Register4 = 4,
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RegisterMax = 32
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};
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enum {
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RegState0 = 0,
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RegState1 = 1,
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RegState2 = 2
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};
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extern int used_virtual_registers[RegClassMax];
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extern int used_nonvolatile_registers[RegClassMax];
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extern int assignable_registers[RegClassMax];
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extern int n_real_registers[RegClassMax];
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extern int n_scratch_registers[RegClassMax];
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extern int scratch_registers[RegClassMax][RegisterMax];
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extern int n_nonvolatile_registers[RegClassMax];
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extern int nonvolatile_registers[RegClassMax][RegisterMax];
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extern UInt8 reg_state[RegClassMax][RegisterMax];
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extern int first_temporary_register[RegClassMax];
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extern int last_temporary_register[RegClassMax];
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extern char *register_class_name[RegClassMax];
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extern char *register_class_format[RegClassMax];
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extern int coloring;
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extern int optimizing;
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extern void init_registers(void);
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extern void assign_register_to_variable(Object *obj, RegClass rclass);
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extern void retain_register_for_argument(Object *obj, RegClass rclass, short reg);
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extern int available_registers(RegClass rclass);
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extern UInt32 volatile_registers(RegClass rclass);
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extern short obtain_nonvolatile_register(RegClass rclass);
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extern void open_temp_registers(void);
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extern void check_temp_registers(void);
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extern void close_temp_registers(void);
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extern int count_scratch_registers(void);
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extern void init_modified_registers(void);
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extern void note_modified_registers(Object *obj);
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extern void find_modified_registers(Object *obj, UInt32 *masks);
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#endif
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