Newer
Older
#include "mcc/tac.h"
#include "mcc/tac_print.h"
#include "mcc/symbol_table.h"
struct mcc_assembly_offset *find_var(char *temp, struct mcc_asm_gen_container *asm_container) {
struct mcc_assembly_offset *a_offset = NULL;
for (int i = 0; i < asm_container -> variable_offsets -> size; i++) {
struct mcc_assembly_offset *ao = (struct mcc_assembly_offset *) asm_container -> variable_offsets -> arr[i];
printf("%s %s\n", temp, ao -> temporary);
if (strcmp(ao->temporary, temp) == 0) {
a_offset = ao;
break;
}
}
return a_offset;
}
void asm_gen_function_start(FILE *out, char* function_name) {
fprintf(out, "%s:\n", function_name);
fprintf(out, "\tpushl\t(%%ebp)\n");
fprintf(out, "\tmovl\t%%esp, %%ebp\n");
fprintf(out, "\tsubl\t$16, %%esp\n");
}
void asm_gen_function_end_no_return(FILE *out) {
fprintf(out, "\tnop\n");
fprintf(out, "\tpopl\t%%ebp\n");
fprintf(out, "\tret\n");
}
void asm_gen_function_end_with_return(FILE *out, struct mcc_tac_entry *te, struct mcc_asm_gen_container *asm_container) {
struct mcc_assembly_offset *ao = find_var(te -> arg1, asm_container);
if (ao != NULL) {
if(te->tac_op == MCC_TAC_FLOAT){
fprintf(out, "\tflds\t%d(%%ebp)\n", ao -> offset);
}else{
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", ao -> offset);
}
} else {
fprintf(out, "\tnop\n");
}
fprintf(out, "\tleave\n");
fprintf(out, "\tret\n");
}
void asm_gen_assignment_int(FILE *out, struct mcc_tac_entry *te, struct mcc_asm_gen_container *asm_container) {
mcc_assembly_add_offset_variable(asm_container, te);
fprintf(out, "\tmovl\t$%s, %d(%%ebp)\n", te -> arg1, mcc_assembly_get_current_offset(asm_container));
}
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
void asm_gen_assignment_bool(FILE *out, struct mcc_tac_entry *te, struct mcc_asm_gen_container *asm_container) {
mcc_assembly_add_offset_variable(asm_container, te);
if(strcmp("TRUE",te->arg1) == 0){
fprintf(out, "\tmovl $1, \t%d(%%ebp)\n", te -> arg1, mcc_assembly_get_current_offset(asm_container));
}else {
fprintf(out, "\tmovl $0, \t%d(%%ebp)\n", te -> arg1, mcc_assembly_get_current_offset(asm_container));
}
}
void asm_gen_assignment_string(FILE *out, struct mcc_tac_entry *te, struct mcc_asm_gen_container *asm_container) {
mcc_assembly_add_offset_variable(asm_container, te);
te->arg1[strlen(te->arg1) - 2] = '\0';
fprintf(out, "\t__LCD%d:\n", asm_container->labelCounter);
fprintf(out, "\t .string \"%s\"\n", te->arg1 + 2);
fprintf(out, "\tmovl\t$.LC%d, %d(%%ebp)\n", asm_container->labelCounter++, mcc_assembly_get_current_offset(asm_container));
}
void asm_gen_binary_int_op(FILE *out, struct mcc_tac_entry *te, struct mcc_asm_gen_container *asm_container)
{
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", mcc_assembly_get_current_offset(asm_container));
switch (te->tac_op)
{
case MCC_TAC_PLUS_INT:
fprintf(out, "\taddl\t%d(%%ebp), %%eax\n", mcc_assembly_get_current_offset(asm_container));
break;
case MCC_TAC_MINUS_INT_BIN:
fprintf(out, "\tsubl\t%d(%%ebp), %%eax\n",mcc_assembly_get_current_offset(asm_container));
break;
case MCC_TAC_MUL_INT:
fprintf(out, "\timull\t%d(%%ebp), %%eax\n", mcc_assembly_get_current_offset(asm_container));
break;
case MCC_TAC_DIV_INT:
fprintf(out, "\tcltd\n");
fprintf(out, "\tidivl\t%d(%%ebp)\n", mcc_assembly_get_current_offset(asm_container));
break;
default:
fprintf(out,"\tnop\n");
break;
}
mcc_assembly_add_offset_variable(asm_container, te);
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", mcc_assembly_get_current_offset(asm_container));
}
void mcc_asm_gen(FILE *out, struct mcc_tac *tac, struct mcc_asm_gen_container *asm_container) {
for(int i = 0; i < tac->tac_entries->size; i++) {
struct mcc_tac_entry *entry = tac->tac_entries->arr[i];
switch (entry -> tac_op) {
case MCC_TAC_FUNCTION_START:
asm_gen_function_start(out, entry -> arg2);
break;
case MCC_TAC_FUNCTION_END:
asm_gen_function_end_no_return(out);
break;
case MCC_TAC_RETURN:
asm_gen_function_end_with_return(out, entry, asm_container);
break;
case MCC_TAC_INT:
asm_gen_assignment_int(out, entry, asm_container);
break;
case MCC_TAC_STRING:
asm_gen_assignment_string(out, entry, asm_container);
case MCC_TAC_BOOL:
asm_gen_assignment_bool(out, entry, asm_container);
case MCC_TAC_PLUS_INT:
case MCC_TAC_MINUS_INT_BIN:
case MCC_TAC_MUL_INT:
case MCC_TAC_DIV_INT:
asm_gen_binary_int_op(out, entry, asm_container);
break;
}
}
}
int mcc_asm_gen_creator(FILE *out, struct mcc_tac *tac, struct mcc_symbol_table *st) {
struct mcc_asm_gen_container *ac = malloc(sizeof(*ac));
ac -> variable_offsets = mcc_create_dynamic_array(20);
mcc_asm_gen(out, tac, ac);
return 0;
}
{
int stack_size = variable_size * VARIABLE_SIZE;
if (stack_size % 16 != 0) {
stack_size += (16 - stack_size % 16);
}
return stack_size;
void mcc_asm_add_constant(struct mcc_asm_constant **entries, enum mcc_asm_contant_type type, int *counter, void *value ){
struct mcc_asm_constant *add_const = (struct mcc_asm_constant *)malloc(sizeof(*add_const));
add_const->const_type = type;
add_const->next = NULL;
add_const->number = ++(*counter);
if(type == MCC_ASM_CONST_STRING){
add_const->s_value = (char *) value;
} else if (type == MCC_ASM_CONST_FLOAT){
add_const->f_value = *((double *)value);
}
if (*entries == NULL) {
*entries = add_const;
} else {
struct mcc_asm_constant *constant = *entries;
while (constant->next != NULL) {
constant = constant->next;
}
constant->next = add_const;
}
}
/*void mcc_asm_print_constant(FILE *out, struct mcc_asm_constant *constant)
{
if (constant == NULL) {
return;
}
fprintf(out, "\t.section\t.rodata\n");
if (constant == NULL) {
struct mcc_asm_constant *current = constant;
while (current != NULL) {
fprintf(out, ".LC%d:\n", current->number);
switch (current->const_type) {
case MCC_ASM_CONST_FLOAT:
fprintf(out, "\t.float\t%lf\n", current->f_value);
break;
case MCC_ASM_CONST_STRING:
fprintf(out, "\t.string\t\"%s\"\n", current->s_value);
break;
default:
break;
}
current = current->next;
}
/*
void mcc_asm_gen(FILE *out, struct mcc_tac *tac) {
int const_count = 0;
struct mcc_asm_constant *constants = NULL;
for(int i = 0; i < tac->tac_entries->size; i++)
{
struct mcc_tac_entry *entry = tac->tac_entries->arr[i];
char *arg1 = entry->arg1;
//TODO calculate offset and save temp offset
switch (entry->tac_op)
{
case MCC_TAC_FUNCTION_START:
fprintf(out, "\t.globl %s\n", arg1);
fprintf(out, "\t.type %s, @function\n", arg1);
fprintf(out, "%s:\n", arg1);
fprintf(out, "\tpushl\t%%ebp\n");
fprintf(out, "\tmovl\t%%esp, %%ebp\n");
case MCC_TAC_CALL:
fprintf(out, "\tcall\t%s\n", arg1);
break;
// unary
case MCC_TAC_MINUS_INT_UN:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", offset);
fprintf(out, "\tnegl\t%%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", offset);
break;
case MCC_TAC_MINUS_FLOAT_UN:
break;
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\taddl\t%d(%%ebp), %%eax\n", arg2->offset);
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\tsubl\t%d(%%ebp), %%eax\n", arg2->offset);
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\timull\t%d(%%ebp), %%eax\n", arg2->offset);
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_DIV_INT:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\tcltd\n");
fprintf(out, "\tidivl\t%d(%%ebp)\n", arg2->offset);
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
fprintf(out, "\tflds\t%d(%%ebp)\n", arg1->offset);
fprintf(out, "\tfadds\t%d(%%ebp)\n", arg2->offset);
fprintf(out, "\tfstps\t%d(%%ebp)\n", result->offset);
break;
case MCC_TAC_MINUS_FLOAT_BIN:
fprintf(out, "\tflds\t%d(%%ebp)\n", arg1->offset);
fprintf(out, "\tfsubs\t%d(%%ebp)\n", arg2->offset);
fprintf(out, "\tfstps\t%d(%%ebp)\n", result->offset);
break;
case MCC_TAC_MUL_FLOAT:
fprintf(out, "\tflds\t%d(%%ebp)\n", arg1->offset);
fprintf(out, "\tfmuls\t%d(%%ebp)\n", arg2->offset);
fprintf(out, "\tfstps\t%d(%%ebp)\n", result->offset);
break;
case MCC_TAC_DIV_FLOAT:
fprintf(out, "\tflds\t%d(%%ebp)\n", arg1->offset);
fprintf(out, "\tfdivs\t%d(%%ebp)\n", arg2->offset);
fprintf(out, "\tfstps\t%d(%%ebp)\n", result->offset);
break;
case MCC_TAC_NOT_BOOL:
fprintf(out, "\txorl\t$1, %%edx\n");
break;
case MCC_TAC_AND:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\tandl\t%d(%%ebp), %%edx\n", arg2->offset);
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_OR:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\torl\t%d(%%ebp), %%edx\n", arg2->offset);
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_EQ:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\tcmpl\t%d(%%ebp), %%eax\n", arg2->offset);
fprintf(out, "\tsete\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_NEQ:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\tcmpl\t%d(%%ebp), %%eax\n", arg2->offset);
fprintf(out, "\tsetne\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_GT:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\tcmpl\t%d(%%ebp), %%eax\n", arg2->offset);
fprintf(out, "\tsetg\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_LT:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\tcmpl\t%d(%%ebp), %%eax\n", arg2->offset);
fprintf(out, "\tsetl\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_LTEQ:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\tcmpl\t%d(%%ebp), %%eax\n", arg2->offset);
fprintf(out, "\tsetle\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_GTEQ:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\tcmpl\t%d(%%ebp), %%eax\n", arg2->offset);
fprintf(out, "\tsetge\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_LT_FLOAT:
fprintf(out, "\tflds\t%d(%%ebp)\n", arg2->offset);
fprintf(out, "\tflds\t%d(%%ebp)\n", arg1->offset);
fprintf(out, "\tfcomip\t%%st(1), %%st\n");
fprintf(out, "\tfstp\t%%st(0)\n");
fprintf(out, "\tsetb\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_LTEQ_FLOAT:
fprintf(out, "\tflds\t%d(%%ebp)\n", arg2->offset);
fprintf(out, "\tflds\t%d(%%ebp)\n", arg1->offset);
fprintf(out, "\tfcomip\t%%st(1), %%st\n");
fprintf(out, "\tfstp\t%%st(0)\n");
fprintf(out, "\tsetbe\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_GT_FLOAT:
fprintf(out, "\tflds\t%d(%%ebp)\n", arg2->offset);
fprintf(out, "\tflds\t%d(%%ebp)\n", arg1->offset);
fprintf(out, "\tfcomip\t%%st(1), %%st\n");
fprintf(out, "\tfstp\t%%st(0)\n");
fprintf(out, "\tseta\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_GTEQ_FLOAT:
fprintf(out, "\tflds\t%d(%%ebp)\n", arg2->offset);
fprintf(out, "\tflds\t%d(%%ebp)\n", arg1->offset);
fprintf(out, "\tfcomip\t%%st(1), %%st\n");
fprintf(out, "\tfstp\t%%st(0)\n");
fprintf(out, "\tsetae\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
case MCC_TAC_EQ_FLOAT:
fprintf(out, "\tflds\t%d(%%ebp)\n", arg2->offset);
fprintf(out, "\tflds\t%d(%%ebp)\n", arg1->offset);
fprintf(out, "\tfcomip\t%%st(1), %%st\n");
fprintf(out, "\tfstp\t%%st(0)\n");
fprintf(out, "\tsete\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_EQ_BOOL:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\tcmpl\t%d(%%ebp), %%eax\n", arg2->offset);
fprintf(out, "\tsete\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_NEQ_FLOAT:
fprintf(out, "\tflds\t%d(%%ebp)\n", arg2->offset);
fprintf(out, "\tflds\t%d(%%ebp)\n", arg1->offset);
fprintf(out, "\tfcomip\t%%st(1), %%st\n");
fprintf(out, "\tfstp\t%%st(0)\n");
fprintf(out, "\tsetne\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
case MCC_TAC_NEQ_BOOL:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\tcmpl\t%d(%%ebp), %%eax\n", arg2->offset);
fprintf(out, "\tsetne\t%%al\n");
fprintf(out, "\tmovzbl\t%%al, %%eax\n");
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
break;
// literal
//TODO parse arg1 to 0 or 1??
int bool_value = (strcmp(arg1, "true") == 0) ? 1 : 0;
fprintf(out, "\tmovl\t$%s, %d(%%ebp)\n",arg1, result->offset);
fprintf(out, "\tmovl\t$%s, %d(%%ebp)\n",arg1, result->offset);
mcc_asm_add_constant(&constants,MCC_ASM_CONST_STRING,&const_count, arg1 );
fprintf(out, "\tmovl\t$.LCONST%d, %d(%%ebp)\n", const_count,result->offset);
mcc_asm_add_constant(&constants,MCC_ASM_CONST_FLOAT,&const_count, arg1 );
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
fprintf(out, "\tflds\t.LCONST%d\n", const_count);
fprintf(out, "\tfstps\t%d(%%ebp)\n", result->offset);
break;
// copy
case MCC_TAC_BOOL:
break;
case MCC_TAC_INT:
break;
case MCC_TAC_STRING:
break;
case MCC_TAC_FLOAT:
break;
// push
case MCC_TAC_PARAM_BOOL:
case MCC_TAC_PARAM_INT:
case MCC_TAC_PARAM_FLOAT:
case MCC_TAC_PARAM_STRING:
fprintf(out, "\tpushl\t%d(%%ebp)\n", arg1->offset);
break;
case MCC_TAC_PARAM_BOOL_ARR:
case MCC_TAC_PARAM_INT_ARR:
case MCC_TAC_PARAM_FLOAT_ARR:
case MCC_TAC_PARAM_STRING_ARR:
fprintf(out, "\tleal\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\tpushl\t%%eax\n");
break;
// pop
case MCC_TAC_PARAM_POP_BOOL:
case MCC_TAC_PARAM_POP_INT:
case MCC_TAC_PARAM_POP_FLOAT:
case MCC_TAC_PARAM_POP_STRING:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", param_offset);
fprintf(out, "\tmovl\t%%eax, %d(%%ebp)\n", result->offset);
//increase param offset
break;
case MCC_TAC_PARAM_POP_BOOL_ARR:
case MCC_TAC_PARAM_POP_INT_ARR:
case MCC_TAC_PARAM_POP_FLOAT_ARR:
case MCC_TAC_PARAM_POP_STRING_ARR:
//increase param offset
break;
// load
case MCC_TAC_LOAD_BOOL:
case MCC_TAC_LOAD_INT:
case MCC_TAC_LOAD_STRING:
fprintf(out, "\tmovl\t%d(%%ebp), %%edx\n", arg1->offset);
fprintf(out, "\tmovl\t%d(%%ebp), %%ecx\n", arg2->offset);
fprintf(out, "\tmovl\t0(%%ecx, %%edx, %d), %%eax\n", 4);
break;
case MCC_TAC_LOAD_FLOAT:
fprintf(out, "\tmovl\t%d(%%ebp), %%edx\n", arg1->offset);
fprintf(out, "\tmovl\t%d(%%ebp), %%ecx\n", arg2->offset);
fprintf(out, "\tflds\t%d(%%ebp, %%edx, %d)\n", arg1->offset, 4);
break;
// store
case MCC_TAC_STORE_BOOL:
case MCC_TAC_STORE_INT:
case MCC_TAC_STORE_STRING:
fprintf(out, "\tmovl\t%d(%%ebp), %%eax\n", arg1->offset);
fprintf(out, "\tmovl\t%d(%%ebp), %%edx\n", arg2->offset);
fprintf(out, "\tmovl\t%d(%%ebp), %%ecx\n", offset);
fprintf(out, "\tmovl\t%%eax, 0(%%ecx, %%edx, %d)\n", 4);
break;
case MCC_TAC_STORE_FLOAT:
fprintf(out, "\tflds\t%d(%%ebp)\n", arg1->offset);
fprintf(out, "\tmovl\t%d(%%ebp), %%edx\n", arg2->offset);
fprintf(out, "\tmovl\t%d(%%ebp), %%ecx\n", offset);
fprintf(out, "\tfstps\t0(%%ecx, %%edx, %d)\n", 4);
break;
// IR operations
case MCC_TAC_JMP :
fprintf(out, "\tjmp\t.%s\n", result + sizeof(char));
break;
case MCC_TAC_JMP_FALSE :
fprintf(out, "\tcmpl\t$0, %d(%%ebp)\n", arg1->offset);
fprintf(out, "\tje\t.%s\n", result + sizeof(char));
break;
case MCC_TAC_RETURN :
fprintf(out, "\tleave\n");
fprintf(out, "\tret\n");
break;
case MCC_TAC_ARR_DECL :
// set stack offset size of pointer * elements
break;
case MCC_TAC_LABEL :
fprintf(out, ".%s:\n", result + sizeof(char));
break;
case MCC_TAC_FUNCTION_END :
fprintf(out, "\tleave\n");
fprintf(out, "\tret\n");
mcc_asm_print_constant(out,constants);