user: 请从给定的汇编指令推导出C源代码:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0xc(%rbp)
  movl   $0x4,-0x18(%rbp)
  movl   $0x4,-0x14(%rbp)
  movl   $0x7,-0x10(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L703
L270:
  mov    -0x18(%rbp),%eax
  add    %eax,%eax
  lea    0x7(%rax),%edx
  mov    -0x10(%rbp),%eax
  cmp    %eax,%edx
  setne  %al
  movzbl %al,%eax
  add    %eax,-0xc(%rbp)
  lea    -0x14(%rbp),%rdx
  lea    -0x18(%rbp),%rsi
  lea    -0x10(%rbp),%rax
  mov    $0x2,%ecx
  mov    %rax,%rdi
  call   <foo@plt>
  mov    -0x18(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x18(%rbp)
L703:
  mov    -0x18(%rbp),%eax
  cmp    $0x3f,%eax
  jle    L270
  cmpl   $0x0,-0xc(%rbp)
  jne    L599
  mov    -0x18(%rbp),%eax
  cmp    $0x40,%eax
  jne    L599
  mov    -0x10(%rbp),%eax
  cmp    $0x87,%eax
  je     L167
L599:
  mov    $0x0,%eax
  call   <__builtin_abort@plt>
L167:
  movl   $0x4,-0x18(%rbp)
  movl   $0x4,-0x14(%rbp)
  movl   $0x7,-0x10(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L361
L243:
  mov    -0x18(%rbp),%eax
  lea    0x3(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x2,%eax
  mov    %eax,%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  lea    0x7(%rax),%edx
  mov    -0x10(%rbp),%eax
  cmp    %eax,%edx
  setne  %al
  movzbl %al,%eax
  add    %eax,-0xc(%rbp)
  lea    -0x14(%rbp),%rdx
  lea    -0x18(%rbp),%rsi
  lea    -0x10(%rbp),%rax
  mov    $0x3,%ecx
  mov    %rax,%rdi
  call   <foo@plt>
  mov    -0x18(%rbp),%eax
  add    $0x4,%eax
  mov    %eax,-0x18(%rbp)
L361:
  mov    -0x18(%rbp),%eax
  cmp    $0x3f,%eax
  jle    L243
  cmpl   $0x0,-0xc(%rbp)
  jne    L545
  mov    -0x18(%rbp),%eax
  cmp    $0x40,%eax
  jne    L545
  mov    -0x10(%rbp),%eax
  cmp    $0x37,%eax
  je     L459
L545:
  mov    $0x0,%eax
  call   <__builtin_abort@plt>
L459:
  movl   $0x4,-0x18(%rbp)
  movl   $0x4,-0x14(%rbp)
  movl   $0x7,-0x10(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L212
L15:
  mov    -0x18(%rbp),%eax
  add    %eax,%eax
  lea    0x7(%rax),%edx
  mov    -0x10(%rbp),%eax
  cmp    %eax,%edx
  setne  %al
  movzbl %al,%eax
  add    %eax,-0xc(%rbp)
  lea    -0x14(%rbp),%rdx
  lea    -0x18(%rbp),%rsi
  lea    -0x10(%rbp),%rax
  mov    $0x2,%ecx
  mov    %rax,%rdi
  call   <foo@plt>
  mov    -0x18(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x18(%rbp)
L212:
  mov    -0x18(%rbp),%eax
  cmp    $0x3f,%eax
  jle    L15
  cmpl   $0x0,-0xc(%rbp)
  jne    L255
  mov    -0x18(%rbp),%eax
  cmp    $0x40,%eax
  jne    L255
  mov    -0x10(%rbp),%eax
  cmp    $0x87,%eax
  je     L682
L255:
  mov    $0x0,%eax
  call   <__builtin_abort@plt>
L682:
  movl   $0x4,-0x18(%rbp)
  movl   $0x4,-0x14(%rbp)
  movl   $0x7,-0x10(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L213
L123:
  mov    -0x18(%rbp),%eax
  lea    0x3(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x2,%eax
  mov    %eax,%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  lea    0x7(%rax),%edx
  mov    -0x10(%rbp),%eax
  cmp    %eax,%edx
  setne  %al
  movzbl %al,%eax
  add    %eax,-0xc(%rbp)
  lea    -0x14(%rbp),%rdx
  lea    -0x18(%rbp),%rsi
  lea    -0x10(%rbp),%rax
  mov    $0x3,%ecx
  mov    %rax,%rdi
  call   <foo@plt>
  mov    -0x18(%rbp),%eax
  add    $0x4,%eax
  mov    %eax,-0x18(%rbp)
L213:
  mov    -0x18(%rbp),%eax
  cmp    $0x3f,%eax
  jle    L123
  cmpl   $0x0,-0xc(%rbp)
  jne    L184
  mov    -0x18(%rbp),%eax
  cmp    $0x40,%eax
  jne    L184
  mov    -0x10(%rbp),%eax
  cmp    $0x37,%eax
  je     L408
L184:
  mov    $0x0,%eax
  call   <__builtin_abort@plt>
L408:
  movl   $0x4,-0x18(%rbp)
  movl   $0x4,-0x14(%rbp)
  movl   $0x7,-0x10(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L578
L50:
  movl   $0x0,-0x14(%rbp)
  jmp    L436
L70:
  mov    -0x14(%rbp),%eax
  add    %eax,%eax
  lea    0x7(%rax),%edx
  mov    -0x18(%rbp),%eax
  shl    $0x4,%eax
  add    %eax,%edx
  mov    -0x10(%rbp),%eax
  cmp    %eax,%edx
  setne  %al
  movzbl %al,%eax
  add    %eax,-0xc(%rbp)
  lea    -0x14(%rbp),%rdx
  lea    -0x18(%rbp),%rsi
  lea    -0x10(%rbp),%rax
  mov    $0x2,%ecx
  mov    %rax,%rdi
  call   <foo@plt>
  mov    -0x14(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x14(%rbp)
L436:
  mov    -0x14(%rbp),%eax
  cmp    $0x7,%eax
  jle    L70
  mov    -0x18(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x18(%rbp)
L578:
  mov    -0x18(%rbp),%eax
  cmp    $0x7,%eax
  jle    L50
  cmpl   $0x0,-0xc(%rbp)
  jne    L628
  mov    -0x18(%rbp),%eax
  cmp    $0x8,%eax
  jne    L628
  mov    -0x14(%rbp),%eax
  cmp    $0x8,%eax
  jne    L628
  mov    -0x10(%rbp),%eax
  cmp    $0x87,%eax
  je     L374
L628:
  mov    $0x0,%eax
  call   <__builtin_abort@plt>
L374:
  movl   $0x4,-0x18(%rbp)
  movl   $0x4,-0x14(%rbp)
  movl   $0x7,-0x10(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L263
L381:
  movl   $0x0,-0x14(%rbp)
  jmp    L556
L169:
  mov    -0x14(%rbp),%eax
  add    %eax,%eax
  lea    0x7(%rax),%edx
  mov    -0x18(%rbp),%eax
  shl    $0x4,%eax
  add    %eax,%edx
  mov    -0x10(%rbp),%eax
  cmp    %eax,%edx
  setne  %al
  movzbl %al,%eax
  add    %eax,-0xc(%rbp)
  lea    -0x14(%rbp),%rdx
  lea    -0x18(%rbp),%rsi
  lea    -0x10(%rbp),%rax
  mov    $0x2,%ecx
  mov    %rax,%rdi
  call   <foo@plt>
  mov    -0x14(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x14(%rbp)
L556:
  mov    -0x14(%rbp),%eax
  cmp    $0x7,%eax
  jle    L169
  mov    -0x18(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x18(%rbp)
L263:
  mov    -0x18(%rbp),%eax
  cmp    $0x7,%eax
  jle    L381
  cmpl   $0x0,-0xc(%rbp)
  jne    L560
  mov    -0x18(%rbp),%eax
  cmp    $0x8,%eax
  jne    L560
  mov    -0x14(%rbp),%eax
  cmp    $0x8,%eax
  jne    L560
  mov    -0x10(%rbp),%eax
  cmp    $0x87,%eax
  je     L92
L560:
  mov    $0x0,%eax
  call   <__builtin_abort@plt>
L92:
  movl   $0x4,-0x18(%rbp)
  movl   $0x4,-0x14(%rbp)
  movl   $0x7,-0x10(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L118
L526:
  mov    -0x18(%rbp),%eax
  add    %eax,%eax
  lea    0x7(%rax),%edx
  mov    -0x10(%rbp),%eax
  cmp    %eax,%edx
  setne  %al
  movzbl %al,%eax
  add    %eax,-0xc(%rbp)
  lea    -0x14(%rbp),%rdx
  lea    -0x18(%rbp),%rsi
  lea    -0x10(%rbp),%rax
  mov    $0x2,%ecx
  mov    %rax,%rdi
  call   <foo@plt>
  mov    -0x18(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x18(%rbp)
L118:
  mov    -0x18(%rbp),%eax
  cmp    $0x3f,%eax
  jle    L526
  cmpl   $0x0,-0xc(%rbp)
  jne    L636
  mov    -0x18(%rbp),%eax
  cmp    $0x40,%eax
  jne    L636
  mov    -0x10(%rbp),%eax
  cmp    $0x87,%eax
  je     L344
L636:
  mov    $0x0,%eax
  call   <__builtin_abort@plt>
L344:
  movl   $0x4,-0x18(%rbp)
  movl   $0x4,-0x14(%rbp)
  movl   $0x7,-0x10(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L662
L293:
  mov    -0x18(%rbp),%eax
  lea    0x3(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x2,%eax
  mov    %eax,%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  lea    0x7(%rax),%edx
  mov    -0x10(%rbp),%eax
  cmp    %eax,%edx
  setne  %al
  movzbl %al,%eax
  add    %eax,-0xc(%rbp)
  lea    -0x14(%rbp),%rdx
  lea    -0x18(%rbp),%rsi
  lea    -0x10(%rbp),%rax
  mov    $0x3,%ecx
  mov    %rax,%rdi
  call   <foo@plt>
  mov    -0x18(%rbp),%eax
  add    $0x4,%eax
  mov    %eax,-0x18(%rbp)
L662:
  mov    -0x18(%rbp),%eax
  cmp    $0x3f,%eax
  jle    L293
  cmpl   $0x0,-0xc(%rbp)
  jne    L94
  mov    -0x18(%rbp),%eax
  cmp    $0x40,%eax
  jne    L94
  mov    -0x10(%rbp),%eax
  cmp    $0x37,%eax
  je     L683
L94:
  mov    $0x0,%eax
  call   <__builtin_abort@plt>
L683:
  movl   $0x4,-0x18(%rbp)
  movl   $0x4,-0x14(%rbp)
  movl   $0x7,-0x10(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L291
L411:
  mov    -0x18(%rbp),%eax
  add    %eax,%eax
  lea    0x7(%rax),%edx
  mov    -0x10(%rbp),%eax
  cmp    %eax,%edx
  setne  %al
  movzbl %al,%eax
  add    %eax,-0xc(%rbp)
  lea    -0x14(%rbp),%rdx
  lea    -0x18(%rbp),%rsi
  lea    -0x10(%rbp),%rax
  mov    $0x2,%ecx
  mov    %rax,%rdi
  call   <foo@plt>
  mov    -0x18(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x18(%rbp)
L291:
  mov    -0x18(%rbp),%eax
  cmp    $0x3f,%eax
  jle    L411
  cmpl   $0x0,-0xc(%rbp)
  jne    L352
  mov    -0x18(%rbp),%eax
  cmp    $0x40,%eax
  jne    L352
  mov    -0x10(%rbp),%eax
  cmp    $0x87,%eax
  je     L265
L352:
  mov    $0x0,%eax
  call   <__builtin_abort@plt>
L265:
  movl   $0x4,-0x18(%rbp)
  movl   $0x4,-0x14(%rbp)
  movl   $0x7,-0x10(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L639
L489:
  mov    -0x18(%rbp),%eax
  lea    0x3(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x2,%eax
  mov    %eax,%edx
  mov    %edx,%eax
  add    %eax,%eax
  add    %edx,%eax
  lea    0x7(%rax),%edx
  mov    -0x10(%rbp),%eax
  cmp    %eax,%edx
  setne  %al
  movzbl %al,%eax
  add    %eax,-0xc(%rbp)
  lea    -0x14(%rbp),%rdx
  lea    -0x18(%rbp),%rsi
  lea    -0x10(%rbp),%rax
  mov    $0x3,%ecx
  mov    %rax,%rdi
  call   <foo@plt>
  mov    -0x18(%rbp),%eax
  add    $0x4,%eax
  mov    %eax,-0x18(%rbp)
L639:
  mov    -0x18(%rbp),%eax
  cmp    $0x3f,%eax
  jle    L489
  cmpl   $0x0,-0xc(%rbp)
  jne    L12
  mov    -0x18(%rbp),%eax
  cmp    $0x40,%eax
  jne    L12
  mov    -0x10(%rbp),%eax
  cmp    $0x37,%eax
  je     L583
L12:
  mov    $0x0,%eax
  call   <__builtin_abort@plt>
L583:
  movl   $0x4,-0x18(%rbp)
  movl   $0x4,-0x14(%rbp)
  movl   $0x7,-0x10(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L48
L710:
  movl   $0x0,-0x14(%rbp)
  jmp    L419
L46:
  mov    -0x14(%rbp),%eax
  add    %eax,%eax
  lea    0x7(%rax),%edx
  mov    -0x18(%rbp),%eax
  shl    $0x4,%eax
  add    %eax,%edx
  mov    -0x10(%rbp),%eax
  cmp    %eax,%edx
  setne  %al
  movzbl %al,%eax
  add    %eax,-0xc(%rbp)
  lea    -0x14(%rbp),%rdx
  lea    -0x18(%rbp),%rsi
  lea    -0x10(%rbp),%rax
  mov    $0x2,%ecx
  mov    %rax,%rdi
  call   <foo@plt>
  mov    -0x14(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x14(%rbp)
L419:
  mov    -0x14(%rbp),%eax
  cmp    $0x7,%eax
  jle    L46
  mov    -0x18(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x18(%rbp)
L48:
  mov    -0x18(%rbp),%eax
  cmp    $0x7,%eax
  jle    L710
  cmpl   $0x0,-0xc(%rbp)
  jne    L389
  mov    -0x18(%rbp),%eax
  cmp    $0x8,%eax
  jne    L389
  mov    -0x14(%rbp),%eax
  cmp    $0x8,%eax
  jne    L389
  mov    -0x10(%rbp),%eax
  cmp    $0x87,%eax
  je     L353
L389:
  mov    $0x0,%eax
  call   <__builtin_abort@plt>
L353:
  movl   $0x4,-0x18(%rbp)
  movl   $0x4,-0x14(%rbp)
  movl   $0x7,-0x10(%rbp)
  movl   $0x0,-0x18(%rbp)
  jmp    L95
L267:
  movl   $0x0,-0x14(%rbp)
  jmp    L39
L638:
  mov    -0x14(%rbp),%eax
  add    %eax,%eax
  lea    0x7(%rax),%edx
  mov    -0x18(%rbp),%eax
  shl    $0x4,%eax
  add    %eax,%edx
  mov    -0x10(%rbp),%eax
  cmp    %eax,%edx
  setne  %al
  movzbl %al,%eax
  add    %eax,-0xc(%rbp)
  lea    -0x14(%rbp),%rdx
  lea    -0x18(%rbp),%rsi
  lea    -0x10(%rbp),%rax
  mov    $0x2,%ecx
  mov    %rax,%rdi
  call   <foo@plt>
  mov    -0x14(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x14(%rbp)
L39:
  mov    -0x14(%rbp),%eax
  cmp    $0x7,%eax
  jle    L638
  mov    -0x18(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,-0x18(%rbp)
L95:
  mov    -0x18(%rbp),%eax
  cmp    $0x7,%eax
  jle    L267
  cmpl   $0x0,-0xc(%rbp)
  jne    L34
  mov    -0x18(%rbp),%eax
  cmp    $0x8,%eax
  jne    L34
  mov    -0x14(%rbp),%eax
  cmp    $0x8,%eax
  jne    L34
  mov    -0x10(%rbp),%eax
  cmp    $0x87,%eax
  je     L93
L34:
  mov    $0x0,%eax
  call   <__builtin_abort@plt>
L93:
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L723
  call   <__stack_chk_fail@plt>
L723:
  leave
  ret
```

assistant: ```c
int main() {
  int i, j, b, c = 0;
  i = 4;
  j = 4;
  b = 7;
#pragma omp simd linear(b : 2) reduction(+ : c)
  for (i = 0; i < 64; i++) {
    c = c + (b != 7 + 2 * i);
    foo(&b, &i, &j, 2);
  }
  if (c || i != 64 || b != 7 + 64 * 2)
    __builtin_abort();
  i = 4;
  j = 4;
  b = 7;
#pragma omp simd linear(b : 3) reduction(+ : c)
  for (i = 0; i < 64; i += 4) {
    c = c + (b != 7 + i / 4 * 3);
    foo(&b, &i, &j, 3);
  }
  if (c || i != 64 || b != 7 + 16 * 3)
    __builtin_abort();
  i = 4;
  j = 4;
  b = 7;
#pragma omp simd linear(i) linear(b : 2) reduction(+ : c)
  for (i = 0; i < 64; i++) {
    c = c + (b != 7 + 2 * i);
    foo(&b, &i, &j, 2);
  }
  if (c || i != 64 || b != 7 + 64 * 2)
    __builtin_abort();
  i = 4;
  j = 4;
  b = 7;
#pragma omp simd linear(i : 4) linear(b : 3) reduction(+ : c)
  for (i = 0; i < 64; i += 4) {
    c = c + (b != 7 + i / 4 * 3);
    foo(&b, &i, &j, 3);
  }
  if (c || i != 64 || b != 7 + 16 * 3)
    __builtin_abort();
  i = 4;
  j = 4;
  b = 7;
#pragma omp simd collapse(2) linear(b : 2) reduction(+ : c)
  for (i = 0; i < 8; i++)
    for (j = 0; j < 8; j++) {
      c = c + (b != 7 + 2 * j + 2 * 8 * i);
      foo(&b, &i, &j, 2);
    }
  if (c || i != 8 || j != 8 || b != 7 + 64 * 2)
    __builtin_abort();
  i = 4;
  j = 4;
  b = 7;
#pragma omp simd collapse(2) lastprivate(i, j) linear(b : 2) reduction(+ : c)
  for (i = 0; i < 8; i++)
    for (j = 0; j < 8; j++) {
      c = c + (b != 7 + 2 * j + 2 * 8 * i);
      foo(&b, &i, &j, 2);
    }
  if (c || i != 8 || j != 8 || b != 7 + 64 * 2)
    __builtin_abort();
  i = 4;
  j = 4;
  b = 7;
#pragma omp parallel for simd schedule(static, 4) linear(b : 2) reduction(+ : c)
  for (i = 0; i < 64; i++) {
    c = c + (b != 7 + 2 * i);
    foo(&b, &i, &j, 2);
  }
  if (c || i != 64 || b != 7 + 64 * 2)
    __builtin_abort();
  i = 4;
  j = 4;
  b = 7;
#pragma omp parallel for simd schedule(static, 4) linear(b : 3) reduction(+ : c)
  for (i = 0; i < 64; i += 4) {
    c = c + (b != 7 + i / 4 * 3);
    foo(&b, &i, &j, 3);
  }
  if (c || i != 64 || b != 7 + 16 * 3)
    __builtin_abort();
  i = 4;
  j = 4;
  b = 7;
#pragma omp parallel for simd schedule(static, 4) linear(i) linear(b : 2) reduction(+ : c)
  for (i = 0; i < 64; i++) {
    c = c + (b != 7 + 2 * i);
    foo(&b, &i, &j, 2);
  }
  if (c || i != 64 || b != 7 + 64 * 2)
    __builtin_abort();
  i = 4;
  j = 4;
  b = 7;
#pragma omp parallel for simd schedule(static, 4) linear(i : 4) linear(b : 3) reduction(+ : c)
  for (i = 0; i < 64; i += 4) {
    c = c + (b != 7 + i / 4 * 3);
    foo(&b, &i, &j, 3);
  }
  if (c || i != 64 || b != 7 + 16 * 3)
    __builtin_abort();
  i = 4;
  j = 4;
  b = 7;
#pragma omp parallel for simd lastprivate(i, j) collapse(2) schedule(static, 4) linear(b : 2) reduction(+ : c)
  for (i = 0; i < 8; i++)
    for (j = 0; j < 8; j++) {
      c = c + (b != 7 + 2 * j + 2 * 8 * i);
      foo(&b, &i, &j, 2);
    }
  if (c || i != 8 || j != 8 || b != 7 + 64 * 2)
    __builtin_abort();
  i = 4;
  j = 4;
  b = 7;
#pragma omp parallel for simd collapse(2) schedule(static, 4) linear(b : 2) reduction(+ : c)
  for (i = 0; i < 8; i++)
    for (j = 0; j < 8; j++) {
      c = c + (b != 7 + 2 * j + 2 * 8 * i);
      foo(&b, &i, &j, 2);
    }
  if (c || i != 8 || j != 8 || b != 7 + 64 * 2)
    __builtin_abort();
  return 0;
}
```