user: 下面的汇编指令对应的C源代码是什么:

```asm
<merge_sort>:
  endbr64
  cmp    %edx,%esi
  jl     L55
  ret
  nopl   0x0(%rax)
L55:
  lea    (%rsi,%rdx,1),%eax
  push   %r15
  mov    %rdi,%r15
  push   %r14
  push   %r13
  mov    %eax,%r13d
  push   %r12
  shr    $0x1f,%r13d
  mov    %edx,%r12d
  push   %rbp
  add    %eax,%r13d
  mov    %esi,%ebp
  push   %rbx
  sar    %r13d
  sub    $0x18,%rsp
  cmp    %r13d,%esi
  jge    L187
  lea    (%rsi,%r13,1),%eax
  mov    %eax,%r14d
  shr    $0x1f,%r14d
  add    %eax,%r14d
  sar    %r14d
  cmp    %r14d,%esi
  jl     L117
  lea    0x1(%r14),%r8d
  cmp    %r8d,%r13d
  jg     L24
L131:
  mov    %r13d,%ecx
  mov    %r14d,%edx
  mov    %ebp,%esi
  mov    %r15,%rdi
  call   <merge@plt>
L187:
  lea    0x1(%r13),%r8d
  cmp    %r12d,%r8d
  jge    L98
  lea    (%r8,%r12,1),%eax
  mov    %eax,%r14d
  shr    $0x1f,%r14d
  add    %eax,%r14d
  sar    %r14d
  cmp    %r14d,%r8d
  jl     L111
  lea    0x1(%r14),%r9d
  cmp    %r9d,%r12d
  jg     L72
L10:
  mov    %r12d,%ecx
  mov    %r14d,%edx
  mov    %r8d,%esi
  mov    %r15,%rdi
  call   <merge@plt>
L98:
  add    $0x18,%rsp
  mov    %r12d,%ecx
  mov    %r13d,%edx
  mov    %ebp,%esi
  pop    %rbx
  mov    %r15,%rdi
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1050 <merge@plt>
  nopl   (%rax)
L72:
  lea    (%r12,%r9,1),%eax
  mov    %eax,%ebx
  shr    $0x1f,%ebx
  add    %eax,%ebx
  sar    %ebx
  cmp    %ebx,%r9d
  jge    L114
  lea    (%r9,%rbx,1),%eax
  mov    %r9d,%esi
  mov    %r15,%rdi
  mov    %r8d,0x8(%rsp)
  mov    %eax,%r10d
  mov    %r9d,0x4(%rsp)
  shr    $0x1f,%r10d
  add    %eax,%r10d
  sar    %r10d
  mov    %r10d,%edx
  mov    %r10d,(%rsp)
  call   <merge_sort>
  mov    (%rsp),%r10d
  mov    %ebx,%edx
  mov    %r15,%rdi
  lea    0x1(%r10),%esi
  call   <merge_sort>
  mov    0x4(%rsp),%r9d
  mov    (%rsp),%edx
  mov    %ebx,%ecx
  mov    %r15,%rdi
  mov    %r9d,%esi
  mov    %r9d,(%rsp)
  call   <merge@plt>
  mov    0x8(%rsp),%r8d
  mov    (%rsp),%r9d
L114:
  lea    0x1(%rbx),%r11d
  cmp    %r11d,%r12d
  jle    L82
  lea    (%r12,%r11,1),%eax
  mov    %r11d,%esi
  mov    %r15,%rdi
  mov    %r9d,0xc(%rsp)
  mov    %eax,%r10d
  mov    %r8d,0x8(%rsp)
  shr    $0x1f,%r10d
  mov    %r11d,0x4(%rsp)
  add    %eax,%r10d
  sar    %r10d
  mov    %r10d,%edx
  mov    %r10d,(%rsp)
  call   <merge_sort>
  mov    (%rsp),%r10d
  mov    %r12d,%edx
  mov    %r15,%rdi
  lea    0x1(%r10),%esi
  call   <merge_sort>
  mov    (%rsp),%edx
  mov    0x4(%rsp),%esi
  mov    %r12d,%ecx
  mov    %r15,%rdi
  call   <merge@plt>
  mov    0xc(%rsp),%r9d
  mov    0x8(%rsp),%r8d
L82:
  mov    %r12d,%ecx
  mov    %ebx,%edx
  mov    %r9d,%esi
  mov    %r15,%rdi
  mov    %r8d,(%rsp)
  call   <merge@plt>
  mov    (%rsp),%r8d
  jmp    L10
  nopw   0x0(%rax,%rax,1)
L111:
  lea    (%r8,%r14,1),%eax
  mov    %eax,%ebx
  shr    $0x1f,%ebx
  add    %eax,%ebx
  sar    %ebx
  cmp    %ebx,%r8d
  jge    L59
  lea    (%r8,%rbx,1),%eax
  mov    %r8d,%esi
  mov    %r15,%rdi
  mov    %r8d,0x4(%rsp)
  mov    %eax,%r9d
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  mov    %r9d,%edx
  mov    %r9d,(%rsp)
  call   <merge_sort>
  mov    (%rsp),%r9d
  mov    %ebx,%edx
  mov    %r15,%rdi
  lea    0x1(%r9),%esi
  call   <merge_sort>
  mov    0x4(%rsp),%r8d
  mov    (%rsp),%edx
  mov    %ebx,%ecx
  mov    %r15,%rdi
  mov    %r8d,%esi
  mov    %r8d,(%rsp)
  call   <merge@plt>
  mov    (%rsp),%r8d
L59:
  lea    0x1(%rbx),%r10d
  cmp    %r10d,%r14d
  jle    L83
  lea    (%r14,%r10,1),%eax
  mov    %r10d,%esi
  mov    %r15,%rdi
  mov    %r8d,0x8(%rsp)
  mov    %eax,%r9d
  mov    %r10d,0x4(%rsp)
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  mov    %r9d,%edx
  mov    %r9d,(%rsp)
  call   <merge_sort>
  mov    (%rsp),%r9d
  mov    %r14d,%edx
  mov    %r15,%rdi
  lea    0x1(%r9),%esi
  call   <merge_sort>
  mov    (%rsp),%edx
  mov    0x4(%rsp),%esi
  mov    %r14d,%ecx
  mov    %r15,%rdi
  call   <merge@plt>
  mov    0x8(%rsp),%r8d
L83:
  mov    %r8d,%esi
  mov    %r14d,%ecx
  mov    %ebx,%edx
  mov    %r15,%rdi
  mov    %r8d,(%rsp)
  call   <merge@plt>
  lea    0x1(%r14),%r9d
  mov    (%rsp),%r8d
  cmp    %r9d,%r12d
  jle    L10
  jmp    L72
  nopl   0x0(%rax,%rax,1)
L24:
  lea    0x0(%r13,%r8,1),%eax
  mov    %eax,%ebx
  shr    $0x1f,%ebx
  add    %eax,%ebx
  sar    %ebx
  cmp    %ebx,%r8d
  jge    L153
  lea    (%r8,%rbx,1),%eax
  mov    %r8d,%esi
  mov    %r15,%rdi
  mov    %r8d,0x4(%rsp)
  mov    %eax,%r9d
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  mov    %r9d,%edx
  mov    %r9d,(%rsp)
  call   <merge_sort>
  mov    (%rsp),%r9d
  mov    %ebx,%edx
  mov    %r15,%rdi
  lea    0x1(%r9),%esi
  call   <merge_sort>
  mov    0x4(%rsp),%r8d
  mov    (%rsp),%edx
  mov    %ebx,%ecx
  mov    %r15,%rdi
  mov    %r8d,%esi
  mov    %r8d,(%rsp)
  call   <merge@plt>
  mov    (%rsp),%r8d
L153:
  lea    0x1(%rbx),%r10d
  cmp    %r10d,%r13d
  jle    L182
  lea    0x0(%r13,%r10,1),%eax
  mov    %r10d,%esi
  mov    %r15,%rdi
  mov    %r8d,0x8(%rsp)
  mov    %eax,%r9d
  mov    %r10d,0x4(%rsp)
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  mov    %r9d,%edx
  mov    %r9d,(%rsp)
  call   <merge_sort>
  mov    (%rsp),%r9d
  mov    %r13d,%edx
  mov    %r15,%rdi
  lea    0x1(%r9),%esi
  call   <merge_sort>
  mov    (%rsp),%edx
  mov    0x4(%rsp),%esi
  mov    %r13d,%ecx
  mov    %r15,%rdi
  call   <merge@plt>
  mov    0x8(%rsp),%r8d
L182:
  mov    %r13d,%ecx
  mov    %ebx,%edx
  mov    %r8d,%esi
  mov    %r15,%rdi
  call   <merge@plt>
  jmp    L131
  nopl   0x0(%rax,%rax,1)
L117:
  lea    (%rsi,%r14,1),%eax
  mov    %eax,%ebx
  shr    $0x1f,%ebx
  add    %eax,%ebx
  sar    %ebx
  cmp    %ebx,%esi
  jge    L68
  lea    (%rsi,%rbx,1),%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  mov    %r8d,%edx
  mov    %r8d,(%rsp)
  call   <merge_sort>
  mov    (%rsp),%r8d
  mov    %ebx,%edx
  mov    %r15,%rdi
  lea    0x1(%r8),%esi
  call   <merge_sort>
  mov    (%rsp),%edx
  mov    %ebx,%ecx
  mov    %ebp,%esi
  mov    %r15,%rdi
  call   <merge@plt>
L68:
  lea    0x1(%rbx),%r9d
  cmp    %r9d,%r14d
  jle    L112
  lea    (%r14,%r9,1),%eax
  mov    %r9d,%esi
  mov    %r15,%rdi
  mov    %r9d,0x4(%rsp)
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  mov    %r8d,%edx
  mov    %r8d,(%rsp)
  call   <merge_sort>
  mov    (%rsp),%r8d
  mov    %r14d,%edx
  mov    %r15,%rdi
  lea    0x1(%r8),%esi
  call   <merge_sort>
  mov    (%rsp),%edx
  mov    0x4(%rsp),%esi
  mov    %r14d,%ecx
  mov    %r15,%rdi
  call   <merge@plt>
L112:
  mov    %r14d,%ecx
  mov    %ebx,%edx
  mov    %ebp,%esi
  mov    %r15,%rdi
  call   <merge@plt>
  lea    0x1(%r14),%r8d
  cmp    %r8d,%r13d
  jle    L131
  jmp    L24
```

assistant: ```c
void merge_sort(int arr[], int l, int h) {
  if (l >= h)
    return;
  int m = (l + h) / 2;
  merge_sort(arr, l, m);
  merge_sort(arr, m + 1, h);
  merge(arr, l, m, h);
}
```