quads.h

/* quads.h by William Ho  */
#ifndef QUADS_H
#define QUADS_H

enum quad_opcodes {
	Q_MOV=1, Q_LOAD, Q_LEA, Q_STORE,
	Q_BR, Q_CMP, Q_BRGT, Q_BRLT, Q_BRGE, Q_BRLE, Q_BREQ, Q_BRNE,

	Q_INC, Q_DEC, 

	Q_ADD, Q_SUB, Q_MUL, Q_DIV, Q_MOD, 
	Q_AND, Q_XOR, Q_OR, Q_LOGAND, Q_LOGOR, 
	Q_NOT, Q_LOGNOT, Q_SHL, Q_SHR,

	Q_FUNC_CALL, Q_FUNC_ARG, Q_ARG_BEGIN,
	Q_RETURN, Q_CONTINUE
};

struct quad {
	int opcode;
	struct generic_node *result, *src1, *src2;
	struct quad *next;
};

struct func_list {
	char *id;
	int num_locals;
	struct func_list *next, *last;
	struct block *bb;
};

struct loop {
	struct block *body, *after;
	struct loop *prev;
};

#define COMMON_NODE_ATTRIBUTES \
	int nodetype
struct block {
	COMMON_NODE_ATTRIBUTES;
	struct generic_node *type; // unused
	char *id;
	struct quad *first, *last;
	struct block *next;
};

struct generic_node;
struct symbol;
struct expr_node;
struct stmt_node;

struct func_list *new_function(char *name);
struct symbol *rename_sym(struct symbol *sym);
struct quad *new_quad(int opcode, struct generic_node *r, 
	struct generic_node *s1,struct generic_node *s2);
struct generic_node *binary_to_node(struct expr_node *expr);
struct generic_node *unary_to_node(struct expr_node *expr);
struct generic_node *expr_to_node(struct expr_node *expr);
struct quad *stmt_to_quad(struct stmt_node *stmt);
struct generic_node *new_const_node_q(int val);
void emit(struct quad *q);
void print_bb(struct block *bb);
void link_bb(struct block *bb1, struct block *bb2);
void set_tmp_bool(int opcode, struct generic_node *tmp);

void gen_if(struct stmt_node *stmt);
void gen_while(struct stmt_node *stmt);
void gen_for(struct stmt_node *stmt);

char *opcode_string(int opcode);
struct block *new_block();
struct generic_node *new_tmp_node();
void gen_postincdec();
struct generic_node *get_func_args(struct expr_node *f);
struct generic_node *gen_lval(struct expr_node *node, int *mode);
#endif