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#include <stdio.h>
#include <stdlib.h>
#include "ir.h"
struct ir* ir_make(void) {
struct ir *ir = malloc(sizeof(struct ir));
ir->cap = 32;
ir->len = 0;
ir->inss = malloc(ir->cap * sizeof(struct irins*));
ir->globspace = 0;
return ir;
}
void ir_delete(struct ir *ir) {
for (int i = 0; i < ir->len; i++) {
irins_delete(ir->inss[i]);
}
free(ir->inss);
free(ir);
}
struct ref ir_reserve_global(struct ir *ir, int size) {
int offset = ir->globspace;
ir->globspace += size;
return ref_mem(-1, offset, true);
}
void ir_append(struct ir *ir, struct irins *ins) {
if (ir->len == ir->cap) {
ir->cap *= 2;
ir->inss = realloc(ir->inss, ir->cap * sizeof(struct irins*));
}
ir->inss[ir->len++] = ins;
}
struct irins* irins_make(enum instype type) {
struct irins *ins = malloc(sizeof(struct irins));
ins->type = type;
ins->name = NULL;
return ins;
}
struct irins* irins_make_name(enum instype type, char *name) {
struct irins *ins = irins_make(type);
ins->name = name;
return ins;
}
struct irins* irins_make_01(enum instype type, struct ref r0, struct ref r1) {
struct irins *ins = irins_make(type);
ins->r0 = r0;
ins->r1 = r1;
return ins;
}
struct irins* irins_make_012(enum instype type, struct ref r0, struct ref r1, struct ref r2) {
struct irins *ins = irins_make_01(type, r0, r1);
ins->r2 = r2;
return ins;
}
struct irins* irins_make_1(enum instype type, struct ref r1) {
struct irins *ins = irins_make(type);
ins->r1 = r1;
return ins;
}
struct irins* irins_make_12(enum instype type, struct ref r1, struct ref r2) {
struct irins *ins = irins_make(type);
ins->r1 = r1;
ins->r2 = r2;
return ins;
}
struct irins* irins_make_jcc(char *name, enum condcode condcode) {
struct irins *ins = irins_make(INS_JCC);
ins->name = name;
ins->condcode = condcode;
return ins;
}
void irins_delete(struct irins *ins) {
if (ins->name) free(ins->name);
free(ins);
}
char* gen_label_name(void) {
static int next = 0;
char *buf = malloc(16);
sprintf(buf, "L%d", next++);
return buf;
}
struct ref ref_reg(int reg) {
return (struct ref){REF_REG, reg, 0, false, 0};
}
struct ref ref_mem(int reg, int offset, bool rel_heap) {
return (struct ref){REF_MEM, reg, offset, rel_heap, 0};
}
struct ref ref_imm(int imm) {
return (struct ref){REF_IMM, -1, 0, false, imm};
}
struct ref ref_next_register(void) {
static int next = 0;
return ref_reg(next++);
}
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