user: 下面的汇编指令对应的C源代码是什么：

```asm
<merge>:
  endbr64
  push   %rbp
  mov    %esi,%r8d
  mov    %rsp,%rbp
  push   %r15
  mov    %edx,%r15d
  push   %r14
  mov    %ecx,%r14d
  push   %r13
  mov    %rdi,%r13
  push   %r12
  push   %rbx
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  mov    %ecx,%eax
  mov    %rsp,%rcx
  sub    %esi,%eax
  add    $0x1,%eax
  cltq
  lea    0xf(,%rax,4),%rax
  mov    %rax,%rdx
  and    $0xfffffffffffff000,%rax
  sub    %rax,%rcx
  and    $0xfffffffffffffff0,%rdx
  cmp    %rcx,%rsp
  je     L127
L6:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rcx,%rsp
  jne    L6
L127:
  and    $0xfff,%edx
  sub    %rdx,%rsp
  test   %rdx,%rdx
  jne    L33
L107:
  mov    %rsp,%r9
  mov    %r15d,%ebx
  mov    %r8d,%r12d
  cmp    %r15d,%r8d
  jge    L84
  cmp    %r15d,%r14d
  jl     L84
  mov    $0x1,%eax
  movslq %r8d,%r10
  movslq %r15d,%rdi
  nopl   0x0(%rax)
L46:
  mov    0x0(%r13,%r10,4),%esi
  mov    0x0(%r13,%rdi,4),%edx
  mov    %eax,%ecx
  cmp    %edx,%esi
  jge    L24
L28:
  mov    %esi,-0x4(%r9,%rax,4)
  add    $0x1,%r12d
  add    $0x1,%rax
  cmp    %r14d,%ebx
  jg     L126
  cmp    %r15d,%r12d
  jge    L126
  movslq %r12d,%r10
  mov    0x0(%r13,%rdi,4),%edx
  mov    %eax,%ecx
  mov    0x0(%r13,%r10,4),%esi
  cmp    %edx,%esi
  jl     L28
L24:
  add    $0x1,%ebx
  mov    %edx,-0x4(%r9,%rax,4)
  add    $0x1,%rax
  cmp    %r14d,%ebx
  jg     L126
  cmp    %r12d,%r15d
  jle    L17
  movslq %ebx,%rdi
  jmp    L46
L84:
  xor    %ecx,%ecx
  nopw   0x0(%rax,%rax,1)
L126:
  cmp    %r12d,%r15d
  jle    L17
  movslq %ecx,%rax
  mov    %r8d,-0x50(%rbp)
  lea    (%r9,%rax,4),%rdi
  lea    -0x1(%r15),%eax
  mov    %ecx,-0x4c(%rbp)
  sub    %r12d,%eax
  mov    %r9,-0x48(%rbp)
  lea    0x4(,%rax,4),%rdx
  movslq %r12d,%rax
  lea    0x0(%r13,%rax,4),%rsi
  call   <memcpy@plt>
  mov    -0x4c(%rbp),%ecx
  mov    -0x50(%rbp),%r8d
  mov    -0x48(%rbp),%r9
  add    %ecx,%r15d
  mov    %r15d,%ecx
  sub    %r12d,%ecx
L17:
  cmp    %ebx,%r14d
  jl     L85
  mov    %r14d,%eax
  movslq %ecx,%rcx
  mov    %r8d,-0x4c(%rbp)
  sub    %ebx,%eax
  movslq %ebx,%rbx
  lea    (%r9,%rcx,4),%rdi
  mov    %r9,-0x48(%rbp)
  lea    0x4(,%rax,4),%rdx
  lea    0x0(%r13,%rbx,4),%rsi
  call   <memcpy@plt>
  mov    -0x48(%rbp),%r9
  mov    -0x4c(%rbp),%r8d
L85:
  cmp    %r8d,%r14d
  jl     L54
  movslq %r8d,%rax
  sub    %r8d,%r14d
  mov    %r9,%rsi
  lea    0x0(%r13,%rax,4),%rdi
  lea    0x4(,%r14,4),%rdx
  call   <memcpy@plt>
L54:
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L23
  lea    -0x28(%rbp),%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
  nopl   (%rax)
L33:
  orq    $0x0,-0x8(%rsp,%rdx,1)
  jmp    L107
L23:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int merge(int arr[], int low, int mid, int high) {
  int i, j, k, n;
  n = high - low + 1;
  int temp[n];
  i = low;
  j = mid;
  k = 0;
  while (i < mid && j <= high) {
    if (arr[i] < arr[j]) {
      temp[k++] = arr[i++];
    } else {
      temp[k++] = arr[j++];
    }
  }
  while (i < mid) {
    temp[k++] = arr[i++];
  }
  while (j <= high) {
    temp[k++] = arr[j++];
  }
  for (i = low; i <= high; ++i) {
    arr[i] = temp[i - low];
  }
  return 0;
}
```