user: Translate the below assembly code into C programming language:

```asm
<mergesort>:
  endbr64
  cmp    %esi,%edi
  je     L123
  lea    (%rdi,%rsi,1),%eax
  push   %r15
  push   %r14
  push   %r13
  mov    %eax,%r13d
  push   %r12
  shr    $0x1f,%r13d
  mov    %esi,%r12d
  push   %rbp
  add    %eax,%r13d
  mov    %edi,%ebp
  push   %rbx
  sar    %r13d
  sub    $0x28,%rsp
  cmp    %r13d,%edi
  je     L81
  lea    (%rdi,%r13,1),%eax
  mov    %eax,%r14d
  shr    $0x1f,%r14d
  add    %eax,%r14d
  sar    %r14d
  cmp    %r14d,%edi
  je     L283
  lea    (%rdi,%r14,1),%eax
  mov    %eax,%r15d
  shr    $0x1f,%r15d
  add    %eax,%r15d
  sar    %r15d
  cmp    %r15d,%edi
  je     L38
  lea    (%rdi,%r15,1),%eax
  mov    %eax,%ebx
  shr    $0x1f,%ebx
  add    %eax,%ebx
  sar    %ebx
  cmp    %ebx,%edi
  je     L288
  lea    (%rdi,%rbx,1),%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  mov    %r8d,%esi
  mov    %r8d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r8d
  mov    %ebx,%esi
  lea    0x1(%r8),%edi
  call   <mergesort>
  mov    0x8(%rsp),%esi
  mov    %ebx,%edx
  mov    %ebp,%edi
  call   <merge@plt>
L288:
  lea    0x1(%rbx),%r9d
  cmp    %r9d,%r15d
  je     L25
  lea    (%r15,%r9,1),%eax
  mov    %r9d,%edi
  mov    %r9d,0xc(%rsp)
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  mov    %r8d,%esi
  mov    %r8d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r8d
  mov    %r15d,%esi
  lea    0x1(%r8),%edi
  call   <mergesort>
  mov    0x8(%rsp),%esi
  mov    0xc(%rsp),%edi
  mov    %r15d,%edx
  call   <merge@plt>
L25:
  mov    %r15d,%edx
  mov    %ebx,%esi
  mov    %ebp,%edi
  call   <merge@plt>
L38:
  lea    0x1(%r15),%r8d
  cmp    %r8d,%r14d
  je     L89
  lea    (%r14,%r8,1),%eax
  mov    %eax,%ebx
  shr    $0x1f,%ebx
  add    %eax,%ebx
  sar    %ebx
  cmp    %ebx,%r8d
  je     L345
  lea    (%r8,%rbx,1),%eax
  mov    %r8d,%edi
  mov    %r8d,0xc(%rsp)
  mov    %eax,%r9d
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  mov    %r9d,%esi
  mov    %r9d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r9d
  mov    %ebx,%esi
  lea    0x1(%r9),%edi
  call   <mergesort>
  mov    0xc(%rsp),%r8d
  mov    0x8(%rsp),%esi
  mov    %ebx,%edx
  mov    %r8d,%edi
  mov    %r8d,0x8(%rsp)
  call   <merge@plt>
  mov    0x8(%rsp),%r8d
L345:
  lea    0x1(%rbx),%r10d
  cmp    %r10d,%r14d
  je     L228
  lea    (%r14,%r10,1),%eax
  mov    %r10d,%edi
  mov    %r8d,0x10(%rsp)
  mov    %eax,%r9d
  mov    %r10d,0xc(%rsp)
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  mov    %r9d,%esi
  mov    %r9d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r9d
  mov    %r14d,%esi
  lea    0x1(%r9),%edi
  call   <mergesort>
  mov    0x8(%rsp),%esi
  mov    0xc(%rsp),%edi
  mov    %r14d,%edx
  call   <merge@plt>
  mov    0x10(%rsp),%r8d
L228:
  mov    %r14d,%edx
  mov    %ebx,%esi
  mov    %r8d,%edi
  call   <merge@plt>
L89:
  mov    %r14d,%edx
  mov    %r15d,%esi
  mov    %ebp,%edi
  call   <merge@plt>
L283:
  lea    0x1(%r14),%ebx
  cmp    %ebx,%r13d
  je     L47
  lea    0x0(%r13,%rbx,1),%eax
  mov    %eax,%r15d
  shr    $0x1f,%r15d
  add    %eax,%r15d
  sar    %r15d
  cmp    %r15d,%ebx
  je     L4
  lea    (%rbx,%r15,1),%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  cmp    %r8d,%ebx
  je     L199
  lea    (%rbx,%r8,1),%eax
  mov    %ebx,%edi
  mov    %r8d,0x10(%rsp)
  mov    %eax,%r9d
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  mov    %r9d,%esi
  mov    %r9d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r9d
  mov    0x10(%rsp),%r8d
  lea    0x1(%r9),%edi
  mov    %r8d,%esi
  mov    %r8d,0x8(%rsp)
  mov    %r9d,0xc(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%edx
  mov    0xc(%rsp),%esi
  mov    %ebx,%edi
  call   <merge@plt>
  mov    0x8(%rsp),%r8d
L199:
  lea    0x1(%r8),%r10d
  cmp    %r10d,%r15d
  je     L137
  lea    (%r15,%r10,1),%eax
  mov    %r10d,%edi
  mov    %r8d,0x10(%rsp)
  mov    %eax,%r9d
  mov    %r10d,0xc(%rsp)
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  mov    %r9d,%esi
  mov    %r9d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r9d
  mov    %r15d,%esi
  lea    0x1(%r9),%edi
  call   <mergesort>
  mov    0x8(%rsp),%esi
  mov    0xc(%rsp),%edi
  mov    %r15d,%edx
  call   <merge@plt>
  mov    0x10(%rsp),%r8d
L137:
  mov    %r15d,%edx
  mov    %r8d,%esi
  mov    %ebx,%edi
  call   <merge@plt>
L4:
  lea    0x1(%r15),%r9d
  cmp    %r9d,%r13d
  je     L73
  lea    0x0(%r13,%r9,1),%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  cmp    %r8d,%r9d
  je     L95
  lea    (%r9,%r8,1),%eax
  mov    %r9d,%edi
  mov    %r9d,0x14(%rsp)
  mov    %eax,%r10d
  mov    %r8d,0xc(%rsp)
  shr    $0x1f,%r10d
  add    %eax,%r10d
  sar    %r10d
  mov    %r10d,%esi
  mov    %r10d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r10d
  mov    0xc(%rsp),%r8d
  lea    0x1(%r10),%edi
  mov    %r8d,%esi
  mov    %r10d,0x10(%rsp)
  mov    %r8d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r8d
  mov    0x14(%rsp),%r9d
  mov    0x10(%rsp),%esi
  mov    %r8d,%edx
  mov    %r9d,%edi
  mov    %r8d,0xc(%rsp)
  mov    %r9d,0x8(%rsp)
  call   <merge@plt>
  mov    0xc(%rsp),%r8d
  mov    0x8(%rsp),%r9d
L95:
  lea    0x1(%r8),%r11d
  cmp    %r11d,%r13d
  je     L114
  lea    0x0(%r13,%r11,1),%eax
  mov    %r11d,%edi
  mov    %r8d,0x14(%rsp)
  mov    %eax,%r10d
  mov    %r9d,0x10(%rsp)
  shr    $0x1f,%r10d
  mov    %r11d,0xc(%rsp)
  add    %eax,%r10d
  sar    %r10d
  mov    %r10d,%esi
  mov    %r10d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r10d
  mov    %r13d,%esi
  lea    0x1(%r10),%edi
  call   <mergesort>
  mov    0x8(%rsp),%esi
  mov    0xc(%rsp),%edi
  mov    %r13d,%edx
  call   <merge@plt>
  mov    0x14(%rsp),%r8d
  mov    0x10(%rsp),%r9d
L114:
  mov    %r13d,%edx
  mov    %r8d,%esi
  mov    %r9d,%edi
  call   <merge@plt>
L73:
  mov    %r13d,%edx
  mov    %r15d,%esi
  mov    %ebx,%edi
  call   <merge@plt>
L47:
  mov    %r13d,%edx
  mov    %r14d,%esi
  mov    %ebp,%edi
  call   <merge@plt>
L81:
  lea    0x1(%r13),%r15d
  cmp    %r12d,%r15d
  je     L181
  lea    (%r15,%r12,1),%eax
  mov    %eax,%r14d
  shr    $0x1f,%r14d
  add    %eax,%r14d
  sar    %r14d
  cmp    %r14d,%r15d
  je     L36
  lea    (%r15,%r14,1),%eax
  mov    %eax,%ebx
  shr    $0x1f,%ebx
  add    %eax,%ebx
  sar    %ebx
  cmp    %ebx,%r15d
  je     L102
  lea    (%r15,%rbx,1),%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  cmp    %r8d,%r15d
  je     L275
  lea    (%r15,%r8,1),%eax
  mov    %r15d,%edi
  mov    %r8d,0x10(%rsp)
  mov    %eax,%r9d
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  mov    %r9d,%esi
  mov    %r9d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r9d
  mov    0x10(%rsp),%r8d
  lea    0x1(%r9),%edi
  mov    %r8d,%esi
  mov    %r8d,0x8(%rsp)
  mov    %r9d,0xc(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%edx
  mov    0xc(%rsp),%esi
  mov    %r15d,%edi
  call   <merge@plt>
  mov    0x8(%rsp),%r8d
L275:
  lea    0x1(%r8),%r10d
  cmp    %r10d,%ebx
  je     L128
  lea    (%rbx,%r10,1),%eax
  mov    %r10d,%edi
  mov    %r8d,0x10(%rsp)
  mov    %eax,%r9d
  mov    %r10d,0xc(%rsp)
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  mov    %r9d,%esi
  mov    %r9d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r9d
  mov    %ebx,%esi
  lea    0x1(%r9),%edi
  call   <mergesort>
  mov    0x8(%rsp),%esi
  mov    0xc(%rsp),%edi
  mov    %ebx,%edx
  call   <merge@plt>
  mov    0x10(%rsp),%r8d
L128:
  mov    %ebx,%edx
  mov    %r8d,%esi
  mov    %r15d,%edi
  call   <merge@plt>
L102:
  lea    0x1(%rbx),%r8d
  cmp    %r8d,%r14d
  je     L52
  lea    (%r14,%r8,1),%eax
  mov    %eax,%r10d
  shr    $0x1f,%r10d
  add    %eax,%r10d
  sar    %r10d
  cmp    %r10d,%r8d
  je     L80
  lea    (%r8,%r10,1),%eax
  mov    %eax,%r9d
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  cmp    %r9d,%r8d
  je     L236
  lea    (%r8,%r9,1),%eax
  mov    %r8d,%edi
  mov    %r10d,0x18(%rsp)
  mov    %eax,%r11d
  mov    %r8d,0x14(%rsp)
  shr    $0x1f,%r11d
  mov    %r9d,0xc(%rsp)
  add    %eax,%r11d
  sar    %r11d
  mov    %r11d,%esi
  mov    %r11d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r11d
  mov    0xc(%rsp),%r9d
  lea    0x1(%r11),%edi
  mov    %r9d,%esi
  mov    %r11d,0x10(%rsp)
  mov    %r9d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r9d
  mov    0x14(%rsp),%r8d
  mov    0x10(%rsp),%esi
  mov    %r9d,%edx
  mov    %r8d,%edi
  mov    %r9d,0xc(%rsp)
  mov    %r8d,0x8(%rsp)
  call   <merge@plt>
  mov    0x18(%rsp),%r10d
  mov    0xc(%rsp),%r9d
  mov    0x8(%rsp),%r8d
L236:
  lea    0x1(%r9),%eax
  cmp    %eax,%r10d
  je     L369
  lea    (%r10,%rax,1),%edx
  mov    %eax,%edi
  mov    %r9d,0x1c(%rsp)
  mov    %edx,%r11d
  mov    %r8d,0x18(%rsp)
  shr    $0x1f,%r11d
  mov    %eax,0x10(%rsp)
  add    %edx,%r11d
  mov    %r10d,0x14(%rsp)
  sar    %r11d
  mov    %r11d,%esi
  mov    %r11d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r11d
  mov    0x14(%rsp),%r10d
  lea    0x1(%r11),%edi
  mov    %r10d,%esi
  mov    %r10d,0x8(%rsp)
  mov    %r11d,0xc(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%edx
  mov    0xc(%rsp),%esi
  mov    0x10(%rsp),%edi
  call   <merge@plt>
  mov    0x1c(%rsp),%r9d
  mov    0x18(%rsp),%r8d
  mov    0x8(%rsp),%r10d
L369:
  mov    %r10d,%edx
  mov    %r8d,%edi
  mov    %r9d,%esi
  mov    %r10d,0xc(%rsp)
  mov    %r8d,0x8(%rsp)
  call   <merge@plt>
  mov    0xc(%rsp),%r10d
  mov    0x8(%rsp),%r8d
L80:
  lea    0x1(%r10),%r11d
  cmp    %r11d,%r14d
  je     L136
  lea    (%r14,%r11,1),%eax
  mov    %eax,%r9d
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  cmp    %r9d,%r11d
  je     L143
  lea    (%r11,%r9,1),%edx
  mov    %r11d,%edi
  mov    %r10d,0x1c(%rsp)
  mov    %edx,%eax
  mov    %r8d,0x18(%rsp)
  shr    $0x1f,%eax
  mov    %r11d,0x14(%rsp)
  add    %edx,%eax
  mov    %r9d,0xc(%rsp)
  sar    %eax
  mov    %eax,%esi
  mov    %eax,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%eax
  mov    0xc(%rsp),%r9d
  lea    0x1(%rax),%edi
  mov    %r9d,%esi
  mov    %eax,0x10(%rsp)
  mov    %r9d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r9d
  mov    0x14(%rsp),%r11d
  mov    0x10(%rsp),%esi
  mov    %r9d,%edx
  mov    %r11d,%edi
  mov    %r9d,0xc(%rsp)
  mov    %r11d,0x8(%rsp)
  call   <merge@plt>
  mov    0x1c(%rsp),%r10d
  mov    0x18(%rsp),%r8d
  mov    0xc(%rsp),%r9d
  mov    0x8(%rsp),%r11d
L143:
  lea    0x1(%r9),%ecx
  cmp    %ecx,%r14d
  je     L336
  lea    (%r14,%rcx,1),%edx
  mov    %ecx,%edi
  mov    %r9d,0x1c(%rsp)
  mov    %edx,%eax
  mov    %r10d,0x18(%rsp)
  shr    $0x1f,%eax
  mov    %r11d,0x14(%rsp)
  add    %edx,%eax
  mov    %r8d,0x10(%rsp)
  sar    %eax
  mov    %ecx,0xc(%rsp)
  mov    %eax,%esi
  mov    %eax,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%eax
  mov    %r14d,%esi
  lea    0x1(%rax),%edi
  call   <mergesort>
  mov    0x8(%rsp),%esi
  mov    0xc(%rsp),%edi
  mov    %r14d,%edx
  call   <merge@plt>
  mov    0x1c(%rsp),%r9d
  mov    0x18(%rsp),%r10d
  mov    0x14(%rsp),%r11d
  mov    0x10(%rsp),%r8d
L336:
  mov    %r14d,%edx
  mov    %r9d,%esi
  mov    %r11d,%edi
  mov    %r10d,0xc(%rsp)
  mov    %r8d,0x8(%rsp)
  call   <merge@plt>
  mov    0xc(%rsp),%r10d
  mov    0x8(%rsp),%r8d
L136:
  mov    %r14d,%edx
  mov    %r10d,%esi
  mov    %r8d,%edi
  call   <merge@plt>
L52:
  mov    %r14d,%edx
  mov    %ebx,%esi
  mov    %r15d,%edi
  call   <merge@plt>
L36:
  lea    0x1(%r14),%r9d
  cmp    %r9d,%r12d
  je     L257
  lea    (%r12,%r9,1),%eax
  mov    %eax,%ebx
  shr    $0x1f,%ebx
  add    %eax,%ebx
  sar    %ebx
  cmp    %ebx,%r9d
  je     L230
  lea    (%r9,%rbx,1),%eax
  mov    %eax,%r10d
  shr    $0x1f,%r10d
  add    %eax,%r10d
  sar    %r10d
  cmp    %r10d,%r9d
  je     L262
  lea    (%r9,%r10,1),%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  cmp    %r8d,%r9d
  je     L66
  lea    (%r9,%r8,1),%eax
  mov    %r9d,%edi
  mov    %r10d,0x18(%rsp)
  mov    %eax,%r11d
  mov    %r9d,0x14(%rsp)
  shr    $0x1f,%r11d
  mov    %r8d,0xc(%rsp)
  add    %eax,%r11d
  sar    %r11d
  mov    %r11d,%esi
  mov    %r11d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r11d
  mov    0xc(%rsp),%r8d
  lea    0x1(%r11),%edi
  mov    %r8d,%esi
  mov    %r11d,0x10(%rsp)
  mov    %r8d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r8d
  mov    0x14(%rsp),%r9d
  mov    0x10(%rsp),%esi
  mov    %r8d,%edx
  mov    %r9d,%edi
  mov    %r8d,0xc(%rsp)
  mov    %r9d,0x8(%rsp)
  call   <merge@plt>
  mov    0x18(%rsp),%r10d
  mov    0xc(%rsp),%r8d
  mov    0x8(%rsp),%r9d
L66:
  lea    0x1(%r8),%eax
  cmp    %eax,%r10d
  je     L251
  lea    (%r10,%rax,1),%edx
  mov    %eax,%edi
  mov    %r8d,0x1c(%rsp)
  mov    %edx,%r11d
  mov    %r9d,0x18(%rsp)
  shr    $0x1f,%r11d
  mov    %eax,0x10(%rsp)
  add    %edx,%r11d
  mov    %r10d,0x14(%rsp)
  sar    %r11d
  mov    %r11d,%esi
  mov    %r11d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r11d
  mov    0x14(%rsp),%r10d
  lea    0x1(%r11),%edi
  mov    %r10d,%esi
  mov    %r10d,0x8(%rsp)
  mov    %r11d,0xc(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%edx
  mov    0xc(%rsp),%esi
  mov    0x10(%rsp),%edi
  call   <merge@plt>
  mov    0x1c(%rsp),%r8d
  mov    0x18(%rsp),%r9d
  mov    0x8(%rsp),%r10d
L251:
  mov    %r10d,%edx
  mov    %r9d,%edi
  mov    %r8d,%esi
  mov    %r10d,0xc(%rsp)
  mov    %r9d,0x8(%rsp)
  call   <merge@plt>
  mov    0xc(%rsp),%r10d
  mov    0x8(%rsp),%r9d
L262:
  lea    0x1(%r10),%r11d
  cmp    %r11d,%ebx
  je     L346
  lea    (%rbx,%r11,1),%eax
  mov    %r11d,%edi
  mov    %r10d,0x14(%rsp)
  mov    %eax,%r8d
  mov    %r9d,0x10(%rsp)
  shr    $0x1f,%r8d
  mov    %r11d,0xc(%rsp)
  add    %eax,%r8d
  sar    %r8d
  mov    %r8d,%esi
  mov    %r8d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r8d
  mov    %ebx,%esi
  lea    0x1(%r8),%edi
  call   <mergesort>
  mov    0x8(%rsp),%esi
  mov    0xc(%rsp),%edi
  mov    %ebx,%edx
  call   <merge@plt>
  mov    0x14(%rsp),%r10d
  mov    0x10(%rsp),%r9d
L346:
  mov    %r9d,%edi
  mov    %ebx,%edx
  mov    %r10d,%esi
  mov    %r9d,0x8(%rsp)
  call   <merge@plt>
  mov    0x8(%rsp),%r9d
L230:
  lea    0x1(%rbx),%r10d
  cmp    %r10d,%r12d
  je     L109
  lea    (%r12,%r10,1),%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  cmp    %r8d,%r10d
  je     L76
  lea    (%r10,%r8,1),%eax
  mov    %r10d,%edi
  mov    %r9d,0x18(%rsp)
  mov    %eax,%r11d
  mov    %r10d,0x14(%rsp)
  shr    $0x1f,%r11d
  mov    %r8d,0xc(%rsp)
  add    %eax,%r11d
  sar    %r11d
  mov    %r11d,%esi
  mov    %r11d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r11d
  mov    0xc(%rsp),%r8d
  lea    0x1(%r11),%edi
  mov    %r8d,%esi
  mov    %r11d,0x10(%rsp)
  mov    %r8d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r8d
  mov    0x14(%rsp),%r10d
  mov    0x10(%rsp),%esi
  mov    %r8d,%edx
  mov    %r10d,%edi
  mov    %r8d,0xc(%rsp)
  mov    %r10d,0x8(%rsp)
  call   <merge@plt>
  mov    0x18(%rsp),%r9d
  mov    0xc(%rsp),%r8d
  mov    0x8(%rsp),%r10d
L76:
  lea    0x1(%r8),%eax
  cmp    %eax,%r12d
  je     L215
  lea    (%r12,%rax,1),%edx
  mov    %eax,%edi
  mov    %r8d,0x18(%rsp)
  mov    %edx,%r11d
  mov    %r10d,0x14(%rsp)
  shr    $0x1f,%r11d
  mov    %r9d,0x10(%rsp)
  add    %edx,%r11d
  mov    %eax,0xc(%rsp)
  sar    %r11d
  mov    %r11d,%esi
  mov    %r11d,0x8(%rsp)
  call   <mergesort>
  mov    0x8(%rsp),%r11d
  mov    %r12d,%esi
  lea    0x1(%r11),%edi
  call   <mergesort>
  mov    0x8(%rsp),%esi
  mov    0xc(%rsp),%edi
  mov    %r12d,%edx
  call   <merge@plt>
  mov    0x18(%rsp),%r8d
  mov    0x14(%rsp),%r10d
  mov    0x10(%rsp),%r9d
L215:
  mov    %r12d,%edx
  mov    %r8d,%esi
  mov    %r10d,%edi
  mov    %r9d,0x8(%rsp)
  call   <merge@plt>
  mov    0x8(%rsp),%r9d
L109:
  mov    %r12d,%edx
  mov    %ebx,%esi
  mov    %r9d,%edi
  call   <merge@plt>
L257:
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <merge@plt>
L181:
  add    $0x28,%rsp
  mov    %r12d,%edx
  mov    %r13d,%esi
  mov    %ebp,%edi
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1050 <merge@plt>
  nopl   0x0(%rax)
L123:
  ret
```

assistant: ```c
void mergesort(int start, int end) {
  if (start == end)
    return;
  int mid = (start + end) / 2;
  mergesort(start, mid);
  mergesort(mid + 1, end);
  merge(start, mid, end);
}
```