user: 这段汇编代码用C语言表示是什么样的：

```asm
<merge>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  mov    %edx,-0x20(%rbp)
  mov    %ecx,-0x24(%rbp)
  mov    %r8,-0x30(%rbp)
  mov    -0x1c(%rbp),%eax
  mov    %eax,-0x10(%rbp)
  jmp    L31
L65:
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0x10(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x30(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%eax
  mov    %eax,(%rdx)
  addl   $0x1,-0x10(%rbp)
L31:
  mov    -0x10(%rbp),%eax
  cmp    -0x24(%rbp),%eax
  jl     L65
  mov    -0x1c(%rbp),%eax
  mov    %eax,-0xc(%rbp)
  mov    -0x20(%rbp),%eax
  mov    %eax,-0x8(%rbp)
  mov    -0x1c(%rbp),%eax
  mov    %eax,-0x4(%rbp)
  jmp    L25
L108:
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  mov    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x30(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%eax
  cmp    %eax,%edx
  jge    L89
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x4(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x18(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%eax
  mov    %eax,(%rdx)
  addl   $0x1,-0x4(%rbp)
  addl   $0x1,-0xc(%rbp)
  jmp    L25
L89:
  mov    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x4(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x18(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%eax
  mov    %eax,(%rdx)
  addl   $0x1,-0x4(%rbp)
  addl   $0x1,-0x8(%rbp)
L25:
  mov    -0xc(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jge    L90
  mov    -0x8(%rbp),%eax
  cmp    -0x24(%rbp),%eax
  jl     L108
  jmp    L90
L92:
  mov    -0xc(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x4(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x18(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%eax
  mov    %eax,(%rdx)
  addl   $0x1,-0xc(%rbp)
  addl   $0x1,-0x4(%rbp)
L90:
  mov    -0xc(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jl     L92
  jmp    L54
L103:
  mov    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x4(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x18(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%eax
  mov    %eax,(%rdx)
  addl   $0x1,-0x8(%rbp)
  addl   $0x1,-0x4(%rbp)
L54:
  mov    -0x8(%rbp),%eax
  cmp    -0x24(%rbp),%eax
  jl     L103
  nop
  nop
  pop    %rbp
  ret
```

assistant: ```c
void merge(int arrayPtr[], int start, int middle, int end, int aux[]) {
  for (int i = start; i < end; ++i)
    aux[i] = arrayPtr[i];
  int idx1 = start;
  int idx2 = middle;
  int i = start;
  while (idx1 < middle && idx2 < end) {
    if (aux[idx1] < aux[idx2]) {
      arrayPtr[i] = aux[idx1];
      ++i;
      ++idx1;
    } else {
      arrayPtr[i] = aux[idx2];
      ++i;
      ++idx2;
    }
  }
  while (idx1 < middle) {
    arrayPtr[i] = aux[idx1];
    ++idx1;
    ++i;
  }
  while (idx2 < end) {
    arrayPtr[i] = aux[idx2];
    ++idx2;
    ++i;
  }
}
```