user: 下面的汇编指令对应的C源代码是什么：

```asm
<ex8>:
  endbr64
  push   %r14
  lea    D76(%rip),%rdi
  push   %r13
  push   %r12
  lea    D66(%rip),%r12
  push   %rbp
  push   %rbx
  lea    D33(%rip),%rbx
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  lea    0x8(%rsp),%rbp
  call   <printf@plt>
  nop
L26:
  mov    %r12,%rdi
  call   <printf@plt>
  mov    %rbp,%rsi
  mov    %rbx,%rdi
  call   <scanf@plt>
  mov    0x8(%rsp),%eax
  sub    $0x1,%eax
  cmp    $0x1e,%eax
  ja     L26
  lea    D81(%rip),%rbp
  lea    0x4(%rsp),%r13
  nopl   0x0(%rax,%rax,1)
L0:
  mov    %rbp,%rdi
  call   <printf@plt>
  mov    %r13,%rsi
  mov    %rbx,%rdi
  call   <scanf@plt>
  mov    0x4(%rsp),%eax
  sub    $0x1,%eax
  cmp    $0xb,%eax
  ja     L0
  lea    D32(%rip),%r13
  mov    %rsp,%r14
  nopl   0x0(%rax)
L59:
  mov    %r13,%rdi
  call   <printf@plt>
  mov    %r14,%rsi
  mov    %rbx,%rdi
  call   <scanf@plt>
  mov    (%rsp),%eax
  test   %eax,%eax
  jle    L59
  lea    D72(%rip),%rdi
  lea    0x14(%rsp),%r14
  call   <printf@plt>
  nopl   0x0(%rax,%rax,1)
L22:
  mov    %r12,%rdi
  call   <printf@plt>
  mov    %r14,%rsi
  mov    %rbx,%rdi
  call   <scanf@plt>
  mov    0x14(%rsp),%eax
  sub    $0x1,%eax
  cmp    $0x1e,%eax
  ja     L22
  lea    0x10(%rsp),%r12
  nopl   0x0(%rax)
L80:
  mov    %rbp,%rdi
  call   <printf@plt>
  mov    %r12,%rsi
  mov    %rbx,%rdi
  call   <scanf@plt>
  mov    0x10(%rsp),%eax
  sub    $0x1,%eax
  cmp    $0xb,%eax
  ja     L80
  lea    0xc(%rsp),%rbp
  nopl   0x0(%rax)
L119:
  mov    %r13,%rdi
  call   <printf@plt>
  mov    %rbp,%rsi
  mov    %rbx,%rdi
  call   <scanf@plt>
  mov    0xc(%rsp),%eax
  test   %eax,%eax
  jle    L119
  cmp    (%rsp),%eax
  jl     L54
  jg     L144
  mov    0x10(%rsp),%eax
  cmp    %eax,0x4(%rsp)
  jg     L54
  jl     L144
  mov    0x14(%rsp),%eax
  cmp    %eax,0x8(%rsp)
  jg     L54
  jl     L144
  lea    D42(%rip),%rdi
  call   <printf@plt>
  jmp    L125
  nopl   0x0(%rax,%rax,1)
L54:
  lea    D44(%rip),%rdi
  call   <printf@plt>
L125:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L128
  add    $0x20,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   0x0(%rax)
L144:
  lea    D26(%rip),%rdi
  call   <printf@plt>
  jmp    L125
L128:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: tag: D76
type_infered: string
name: extract_symbolic_data
arguments: tag: D66
type_infered: string
name: extract_symbolic_data
arguments: tag: D33
type_infered: string
name: extract_symbolic_data
arguments: tag: D81
type_infered: string
name: extract_symbolic_data
arguments: tag: D32
type_infered: string
name: extract_symbolic_data
arguments: tag: D72
type_infered: string
name: extract_symbolic_data
arguments: tag: D42
type_infered: string
name: extract_symbolic_data
arguments: tag: D44
type_infered: string
name: extract_symbolic_data
arguments: tag: D26
type_infered: string

tool: D76: Informe a primeira data: 


tool: D66: 	Dia: 

tool: D33: %d

tool: D81: 	Mes: 

tool: D32: 	Ano: 

tool: D72: Informe a segunda data: 


tool: D42: As datas sao iguais.


tool: D44: A primeira data e maior.


tool: D26: A segunda data e maior.


assistant: ```c
void ex8() {
  int ano1, mes1, dia1, ano2, mes2, dia2;
  printf("Informe a primeira data: \n");
  do {
    printf("\tDia: ");
    scanf("%d", &dia1);
  } while (!(dia1 > 0 && dia1 < 32));
  do {
    printf("\tMes: ");
    scanf("%d", &mes1);
  } while (!(mes1 > 0 && mes1 < 13));
  do {
    printf("\tAno: ");
    scanf("%d", &ano1);
  } while (!(ano1 > 0));
  printf("Informe a segunda data: \n");
  do {
    printf("\tDia: ");
    scanf("%d", &dia2);
  } while (!(dia2 > 0 && dia2 < 32));
  do {
    printf("\tMes: ");
    scanf("%d", &mes2);
  } while (!(mes2 > 0 && mes2 < 13));
  do {
    printf("\tAno: ");
    scanf("%d", &ano2);
  } while (!(ano2 > 0));
  if (ano1 > ano2)
    printf("A primeira data e maior.\n");
  else if (ano2 > ano1)
    printf("A segunda data e maior.\n");
  else {
    if (mes1 > mes2)
      printf("A primeira data e maior.\n");
    else if (mes2 > mes1)
      printf("A segunda data e maior.\n");
    else {
      if (dia1 > dia2)
        printf("A primeira data e maior.\n");
      else if (dia2 > dia1)
        printf("A segunda data e maior.\n");
      else
        printf("As datas sao iguais.\n");
    }
  }
}
```