llvm.h

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#ifndef LLVM_H
#define LLVM_H
 
#include "scan.h"
#include "types/number.h"
#include "utils/llvm_stack_entry.h"
 
static const char* numberTypeLLVMReprs[] = {"i1", "i8", "i16", "i32", "i64"};
 
extern LLVMStackEntryNode* loadedRegistersHead;
 
extern LLVMStackEntryNode* freeVirtualRegistersHead;
 
typedef enum
{
 LLVMVALUETYPE_NONE,
 LLVMVALUETYPE_VIRTUAL_REGISTER,
 LLVMVALUETYPE_LABEL,
 LLVMVALUETYPE_CONSTANT,
} LLVMValueType;
 
typedef struct LLVMValue {
 LLVMValueType value_type;
 bool stores_pointer;
 NumberType number_type;
 union {
 type_register virtual_register_index;
 long long int constant;
 type_label label_index;
 } value;
} LLVMValue;
 
#define LLVMVALUE_NULL \
 (LLVMValue) \
 { \
 .value_type = LLVMVALUETYPE_NONE, .value = 0 \
 }
 
#define LLVMVALUE_CONSTANT(c) \
 (LLVMValue) \
 { \
 .value_type = LLVMVALUETYPE_CONSTANT, .value.constant = c \
 }
 
#define LLVMVALUE_VIRTUAL_REGISTER(register_number, n_t) \
 (LLVMValue) \
 { \
 .value_type = LLVMVALUETYPE_VIRTUAL_REGISTER, .stores_pointer = false, \
 .value.virtual_register_index = register_number, .number_type = n_t \
 }
 
#define LLVMVALUE_VIRTUAL_REGISTER_POINTER(register_number, n_t) \
 (LLVMValue) \
 { \
 .value_type = LLVMVALUETYPE_VIRTUAL_REGISTER, .stores_pointer = true, \
 .value.virtual_register_index = register_number, .number_type = n_t \
 }
 
#define LLVMVALUE_LABEL(label_number) \
 (LLVMValue) \
 { \
 .value_type = LLVMVALUETYPE_LABEL, .value.label_index = label_number \
 }
 
#define PURPLE_LABEL_PREFIX "L"
 
type_register* llvm_ensure_registers_loaded(int n_registers, type_register registers[],
 NumberType number_type);
 
void llvm_preamble(void);
void llvm_postamble(void);
 
bool llvm_stack_allocation(LLVMStackEntryNode* stack_entries);
 
LLVMValue llvm_binary_arithmetic(TokenType operation, LLVMValue left_virtual_register,
 LLVMValue right_virtual_register);
LLVMValue llvm_store_constant(Number value);
type_register get_next_local_virtual_register(void);
LLVMValue get_next_label(void);
 
LLVMValue llvm_load_global_variable(char* symbol_name);
void llvm_store_global_variable(char* symbol_name, LLVMValue rvalue_register);
void llvm_declare_global_number_variable(char* symbol_name, NumberType number_type);
LLVMValue llvm_signed_extend(LLVMValue reg, NumberType new_type, NumberType old_type);
LLVMValue llvm_truncate(LLVMValue reg, NumberType new_type, NumberType old_type);
void llvm_declare_assign_global_number_variable(char* symbol_name, Number number);
void llvm_print_int(type_register print_vr, TokenType type);
void llvm_print_bool(type_register print_vr);
LLVMValue llvm_compare(TokenType comparison_type, LLVMValue left_virtual_register,
 LLVMValue right_virtual_register);
LLVMValue llvm_compare_jump(TokenType comparison_type, LLVMValue left_virtual_register,
 LLVMValue right_virtual_register, LLVMValue false_label);
void llvm_label(LLVMValue label);
void llvm_jump(LLVMValue label);
void llvm_conditional_jump(LLVMValue condition_register, LLVMValue true_label,
 LLVMValue false_label);
void llvm_function_preamble(char* symbol_name);
void llvm_function_postamble(void);
LLVMValue llvm_call_function(LLVMValue virtual_register, char* symbol_name);
const char* type_to_llvm_type(TokenType type);
void llvm_return(LLVMValue virtual_register, char* symbol_name);
 
#endif /* LLVM_H */