user: 下面的汇编指令对应的C源代码是什么：

```asm
<mergesort>:
  endbr64
  cmp    %esi,%edi
  je     L131
  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     L276
  lea    (%rdi,%r13,1),%eax
  mov    %eax,%r14d
  shr    $0x1f,%r14d
  add    %eax,%r14d
  sar    %r14d
  cmp    %r14d,%edi
  je     L30
  lea    (%rdi,%r14,1),%eax
  mov    %eax,%r15d
  shr    $0x1f,%r15d
  add    %eax,%r15d
  sar    %r15d
  cmp    %r15d,%edi
  je     L179
  lea    (%rdi,%r15,1),%eax
  mov    %eax,%ebx
  shr    $0x1f,%ebx
  add    %eax,%ebx
  sar    %ebx
  cmp    %ebx,%edi
  je     L309
  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>
L309:
  lea    0x1(%rbx),%r9d
  cmp    %r9d,%r15d
  je     L239
  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>
L239:
  mov    %r15d,%edx
  mov    %ebx,%esi
  mov    %ebp,%edi
  call   <merge@plt>
L179:
  lea    0x1(%r15),%r8d
  cmp    %r8d,%r14d
  je     L278
  lea    (%r14,%r8,1),%eax
  mov    %eax,%ebx
  shr    $0x1f,%ebx
  add    %eax,%ebx
  sar    %ebx
  cmp    %ebx,%r8d
  je     L360
  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
L360:
  lea    0x1(%rbx),%r10d
  cmp    %r10d,%r14d
  je     L273
  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
L273:
  mov    %r14d,%edx
  mov    %ebx,%esi
  mov    %r8d,%edi
  call   <merge@plt>
L278:
  mov    %r14d,%edx
  mov    %r15d,%esi
  mov    %ebp,%edi
  call   <merge@plt>
L30:
  lea    0x1(%r14),%ebx
  cmp    %ebx,%r13d
  je     L288
  lea    0x0(%r13,%rbx,1),%eax
  mov    %eax,%r15d
  shr    $0x1f,%r15d
  add    %eax,%r15d
  sar    %r15d
  cmp    %r15d,%ebx
  je     L115
  lea    (%rbx,%r15,1),%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  cmp    %r8d,%ebx
  je     L301
  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
L301:
  lea    0x1(%r8),%r10d
  cmp    %r10d,%r15d
  je     L69
  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
L69:
  mov    %r15d,%edx
  mov    %r8d,%esi
  mov    %ebx,%edi
  call   <merge@plt>
L115:
  lea    0x1(%r15),%r9d
  cmp    %r9d,%r13d
  je     L57
  lea    0x0(%r13,%r9,1),%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  cmp    %r8d,%r9d
  je     L213
  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
L213:
  lea    0x1(%r8),%r11d
  cmp    %r11d,%r13d
  je     L149
  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
L149:
  mov    %r13d,%edx
  mov    %r8d,%esi
  mov    %r9d,%edi
  call   <merge@plt>
L57:
  mov    %r13d,%edx
  mov    %r15d,%esi
  mov    %ebx,%edi
  call   <merge@plt>
L288:
  mov    %r13d,%edx
  mov    %r14d,%esi
  mov    %ebp,%edi
  call   <merge@plt>
L276:
  lea    0x1(%r13),%r15d
  cmp    %r12d,%r15d
  je     L205
  lea    (%r15,%r12,1),%eax
  mov    %eax,%r14d
  shr    $0x1f,%r14d
  add    %eax,%r14d
  sar    %r14d
  cmp    %r14d,%r15d
  je     L32
  lea    (%r15,%r14,1),%eax
  mov    %eax,%ebx
  shr    $0x1f,%ebx
  add    %eax,%ebx
  sar    %ebx
  cmp    %ebx,%r15d
  je     L233
  lea    (%r15,%rbx,1),%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  cmp    %r8d,%r15d
  je     L340
  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
L340:
  lea    0x1(%r8),%r10d
  cmp    %r10d,%ebx
  je     L153
  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
L153:
  mov    %ebx,%edx
  mov    %r8d,%esi
  mov    %r15d,%edi
  call   <merge@plt>
L233:
  lea    0x1(%rbx),%r8d
  cmp    %r8d,%r14d
  je     L61
  lea    (%r14,%r8,1),%eax
  mov    %eax,%r10d
  shr    $0x1f,%r10d
  add    %eax,%r10d
  sar    %r10d
  cmp    %r10d,%r8d
  je     L304
  lea    (%r8,%r10,1),%eax
  mov    %eax,%r9d
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  cmp    %r9d,%r8d
  je     L207
  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
L207:
  lea    0x1(%r9),%eax
  cmp    %eax,%r10d
  je     L242
  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
L242:
  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
L304:
  lea    0x1(%r10),%r11d
  cmp    %r11d,%r14d
  je     L231
  lea    (%r14,%r11,1),%eax
  mov    %eax,%r9d
  shr    $0x1f,%r9d
  add    %eax,%r9d
  sar    %r9d
  cmp    %r9d,%r11d
  je     L223
  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
L223:
  lea    0x1(%r9),%ecx
  cmp    %ecx,%r14d
  je     L0
  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
L0:
  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
L231:
  mov    %r14d,%edx
  mov    %r10d,%esi
  mov    %r8d,%edi
  call   <merge@plt>
L61:
  mov    %r14d,%edx
  mov    %ebx,%esi
  mov    %r15d,%edi
  call   <merge@plt>
L32:
  lea    0x1(%r14),%r9d
  cmp    %r9d,%r12d
  je     L181
  lea    (%r12,%r9,1),%eax
  mov    %eax,%ebx
  shr    $0x1f,%ebx
  add    %eax,%ebx
  sar    %ebx
  cmp    %ebx,%r9d
  je     L292
  lea    (%r9,%rbx,1),%eax
  mov    %eax,%r10d
  shr    $0x1f,%r10d
  add    %eax,%r10d
  sar    %r10d
  cmp    %r10d,%r9d
  je     L230
  lea    (%r9,%r10,1),%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  cmp    %r8d,%r9d
  je     L15
  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
L15:
  lea    0x1(%r8),%eax
  cmp    %eax,%r10d
  je     L108
  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
L108:
  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
L230:
  lea    0x1(%r10),%r11d
  cmp    %r11d,%ebx
  je     L286
  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
L286:
  mov    %r9d,%edi
  mov    %ebx,%edx
  mov    %r10d,%esi
  mov    %r9d,0x8(%rsp)
  call   <merge@plt>
  mov    0x8(%rsp),%r9d
L292:
  lea    0x1(%rbx),%r10d
  cmp    %r10d,%r12d
  je     L369
  lea    (%r12,%r10,1),%eax
  mov    %eax,%r8d
  shr    $0x1f,%r8d
  add    %eax,%r8d
  sar    %r8d
  cmp    %r8d,%r10d
  je     L255
  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
L255:
  lea    0x1(%r8),%eax
  cmp    %eax,%r12d
  je     L143
  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
L143:
  mov    %r12d,%edx
  mov    %r8d,%esi
  mov    %r10d,%edi
  mov    %r9d,0x8(%rsp)
  call   <merge@plt>
  mov    0x8(%rsp),%r9d
L369:
  mov    %r12d,%edx
  mov    %ebx,%esi
  mov    %r9d,%edi
  call   <merge@plt>
L181:
  mov    %r12d,%edx
  mov    %r14d,%esi
  mov    %r15d,%edi
  call   <merge@plt>
L205:
  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)
L131:
  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);
}
```