user: 请将以下的汇编代码转换成C语言代码：

```asm
<split>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x78,%rsp
  mov    %rdi,0x18(%rsp)
  mov    %rsi,0x10(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x68(%rsp)
  mov    %rcx,%rax
  sub    %rdx,%rax
  cmp    $0x1,%rax
  jbe    L114
  mov    %rdx,%r12
  lea    0x10(%rsp),%rsi
  lea    0x18(%rsp),%rdi
  mov    %rcx,%rbx
  call   <swap@plt>
  lea    (%rbx,%r12,1),%r13
  mov    0x10(%rsp),%rsi
  mov    0x18(%rsp),%rdi
  shr    %r13
  mov    %r13,%rax
  mov    %rdi,0x38(%rsp)
  sub    %r12,%rax
  mov    %rsi,0x40(%rsp)
  cmp    $0x1,%rax
  jbe    L31
  lea    (%r12,%r13,1),%r14
  lea    0x40(%rsp),%rsi
  lea    0x38(%rsp),%rdi
  shr    %r14
  call   <swap@plt>
  mov    0x40(%rsp),%rsi
  mov    0x38(%rsp),%rdi
  mov    %r14,%rax
  sub    %r12,%rax
  mov    %rdi,0x48(%rsp)
  mov    %rsi,0x50(%rsp)
  cmp    $0x1,%rax
  jbe    L170
  lea    (%r12,%r14,1),%r15
  lea    0x50(%rsp),%rsi
  lea    0x48(%rsp),%rdi
  shr    %r15
  call   <swap@plt>
  mov    0x50(%rsp),%rsi
  mov    0x48(%rsp),%rdi
  mov    %r15,%rax
  sub    %r12,%rax
  mov    %rdi,0x58(%rsp)
  mov    %rsi,0x60(%rsp)
  cmp    $0x1,%rax
  jbe    L73
  lea    0x60(%rsp),%rsi
  lea    0x58(%rsp),%rdi
  call   <swap@plt>
  lea    (%r12,%r15,1),%rbp
  mov    0x60(%rsp),%rsi
  mov    %r12,%rdx
  shr    %rbp
  mov    0x58(%rsp),%rdi
  mov    %rbp,%rcx
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %r15,%rcx
  mov    %rbp,%rdx
  mov    0x58(%rsp),%rdi
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %r15,%r8
  mov    %rbp,%rcx
  mov    0x58(%rsp),%rdi
  mov    %r12,%rdx
  call   <merge@plt>
  mov    0x50(%rsp),%rsi
  mov    0x48(%rsp),%rdi
L73:
  mov    %r14,%rax
  mov    %rdi,0x58(%rsp)
  sub    %r15,%rax
  mov    %rsi,0x60(%rsp)
  cmp    $0x1,%rax
  jbe    L77
  lea    0x60(%rsp),%rsi
  lea    0x58(%rsp),%rdi
  call   <swap@plt>
  lea    (%r14,%r15,1),%rbp
  mov    0x60(%rsp),%rsi
  mov    %r15,%rdx
  shr    %rbp
  mov    0x58(%rsp),%rdi
  mov    %rbp,%rcx
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %r14,%rcx
  mov    %rbp,%rdx
  mov    0x58(%rsp),%rdi
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %r14,%r8
  mov    %rbp,%rcx
  mov    0x58(%rsp),%rdi
  mov    %r15,%rdx
  call   <merge@plt>
  mov    0x50(%rsp),%rsi
  mov    0x48(%rsp),%rdi
L77:
  mov    %r14,%r8
  mov    %r15,%rcx
  mov    %r12,%rdx
  call   <merge@plt>
  mov    0x40(%rsp),%rsi
  mov    0x38(%rsp),%rdi
L170:
  mov    %r13,%rax
  mov    %rdi,0x48(%rsp)
  sub    %r14,%rax
  mov    %rsi,0x50(%rsp)
  cmp    $0x1,%rax
  jbe    L81
  lea    0x0(%r13,%r14,1),%r15
  lea    0x50(%rsp),%rsi
  lea    0x48(%rsp),%rdi
  shr    %r15
  call   <swap@plt>
  mov    0x50(%rsp),%rsi
  mov    0x48(%rsp),%rdi
  mov    %r15,%rax
  sub    %r14,%rax
  mov    %rdi,0x58(%rsp)
  mov    %rsi,0x60(%rsp)
  cmp    $0x1,%rax
  jbe    L13
  lea    0x60(%rsp),%rsi
  lea    0x58(%rsp),%rdi
  call   <swap@plt>
  lea    (%r14,%r15,1),%rbp
  mov    0x60(%rsp),%rsi
  mov    %r14,%rdx
  shr    %rbp
  mov    0x58(%rsp),%rdi
  mov    %rbp,%rcx
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %r15,%rcx
  mov    %rbp,%rdx
  mov    0x58(%rsp),%rdi
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %r15,%r8
  mov    %rbp,%rcx
  mov    0x58(%rsp),%rdi
  mov    %r14,%rdx
  call   <merge@plt>
  mov    0x50(%rsp),%rsi
  mov    0x48(%rsp),%rdi
L13:
  mov    %r13,%rax
  mov    %rdi,0x58(%rsp)
  sub    %r15,%rax
  mov    %rsi,0x60(%rsp)
  cmp    $0x1,%rax
  jbe    L89
  lea    0x60(%rsp),%rsi
  lea    0x58(%rsp),%rdi
  call   <swap@plt>
  lea    0x0(%r13,%r15,1),%rbp
  mov    0x60(%rsp),%rsi
  mov    %r15,%rdx
  shr    %rbp
  mov    0x58(%rsp),%rdi
  mov    %rbp,%rcx
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %r13,%rcx
  mov    %rbp,%rdx
  mov    0x58(%rsp),%rdi
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %r13,%r8
  mov    %rbp,%rcx
  mov    0x58(%rsp),%rdi
  mov    %r15,%rdx
  call   <merge@plt>
  mov    0x50(%rsp),%rsi
  mov    0x48(%rsp),%rdi
L89:
  mov    %r13,%r8
  mov    %r15,%rcx
  mov    %r14,%rdx
  call   <merge@plt>
  mov    0x40(%rsp),%rsi
  mov    0x38(%rsp),%rdi
L81:
  mov    %r13,%r8
  mov    %r14,%rcx
  mov    %r12,%rdx
  call   <merge@plt>
  mov    0x10(%rsp),%rsi
  mov    0x18(%rsp),%rdi
L31:
  mov    %rbx,%rax
  mov    %rdi,0x28(%rsp)
  sub    %r13,%rax
  mov    %rsi,0x30(%rsp)
  cmp    $0x1,%rax
  jbe    L164
  lea    (%rbx,%r13,1),%r14
  lea    0x30(%rsp),%rsi
  lea    0x28(%rsp),%rdi
  shr    %r14
  call   <swap@plt>
  mov    0x30(%rsp),%rsi
  mov    0x28(%rsp),%rdi
  mov    %r14,%rax
  sub    %r13,%rax
  mov    %rdi,0x48(%rsp)
  mov    %rsi,0x50(%rsp)
  cmp    $0x1,%rax
  jbe    L12
  lea    0x0(%r13,%r14,1),%r15
  lea    0x50(%rsp),%rsi
  lea    0x48(%rsp),%rdi
  shr    %r15
  call   <swap@plt>
  mov    0x50(%rsp),%rsi
  mov    0x48(%rsp),%rdi
  mov    %r15,%rax
  sub    %r13,%rax
  mov    %rdi,0x58(%rsp)
  mov    %rsi,0x60(%rsp)
  cmp    $0x1,%rax
  jbe    L105
  lea    0x60(%rsp),%rsi
  lea    0x58(%rsp),%rdi
  call   <swap@plt>
  lea    0x0(%r13,%r15,1),%rbp
  mov    0x60(%rsp),%rsi
  mov    %r13,%rdx
  shr    %rbp
  mov    0x58(%rsp),%rdi
  mov    %rbp,%rcx
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %r15,%rcx
  mov    %rbp,%rdx
  mov    0x58(%rsp),%rdi
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %r15,%r8
  mov    %rbp,%rcx
  mov    0x58(%rsp),%rdi
  mov    %r13,%rdx
  call   <merge@plt>
  mov    0x50(%rsp),%rsi
  mov    0x48(%rsp),%rdi
L105:
  mov    %r14,%rax
  mov    %rdi,0x58(%rsp)
  sub    %r15,%rax
  mov    %rsi,0x60(%rsp)
  cmp    $0x1,%rax
  jbe    L144
  lea    0x60(%rsp),%rsi
  lea    0x58(%rsp),%rdi
  call   <swap@plt>
  lea    (%r14,%r15,1),%rbp
  mov    0x60(%rsp),%rsi
  mov    %r15,%rdx
  shr    %rbp
  mov    0x58(%rsp),%rdi
  mov    %rbp,%rcx
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %r14,%rcx
  mov    %rbp,%rdx
  mov    0x58(%rsp),%rdi
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %r14,%r8
  mov    %rbp,%rcx
  mov    0x58(%rsp),%rdi
  mov    %r15,%rdx
  call   <merge@plt>
  mov    0x50(%rsp),%rsi
  mov    0x48(%rsp),%rdi
L144:
  mov    %r14,%r8
  mov    %r15,%rcx
  mov    %r13,%rdx
  call   <merge@plt>
  mov    0x30(%rsp),%rsi
  mov    0x28(%rsp),%rdi
L12:
  mov    %rbx,%rax
  mov    %rdi,0x38(%rsp)
  sub    %r14,%rax
  mov    %rsi,0x40(%rsp)
  cmp    $0x1,%rax
  jbe    L24
  lea    (%rbx,%r14,1),%r15
  lea    0x40(%rsp),%rsi
  lea    0x38(%rsp),%rdi
  shr    %r15
  call   <swap@plt>
  mov    0x40(%rsp),%rsi
  mov    0x38(%rsp),%rdi
  mov    %r15,%rax
  sub    %r14,%rax
  mov    %rdi,0x48(%rsp)
  mov    %rsi,0x50(%rsp)
  cmp    $0x1,%rax
  jbe    L117
  lea    (%r14,%r15,1),%rbp
  lea    0x50(%rsp),%rsi
  lea    0x48(%rsp),%rdi
  shr    %rbp
  call   <swap@plt>
  mov    0x50(%rsp),%rsi
  mov    0x48(%rsp),%rdi
  mov    %rbp,%rax
  sub    %r14,%rax
  mov    %rdi,0x58(%rsp)
  mov    %rsi,0x60(%rsp)
  cmp    $0x1,%rax
  jbe    L37
  lea    0x60(%rsp),%rsi
  lea    0x58(%rsp),%rdi
  call   <swap@plt>
  lea    (%r14,%rbp,1),%r9
  mov    0x60(%rsp),%rsi
  mov    %r14,%rdx
  shr    %r9
  mov    0x58(%rsp),%rdi
  mov    %r9,%rcx
  mov    %r9,0x8(%rsp)
  call   <split>
  mov    0x8(%rsp),%rdx
  mov    0x60(%rsp),%rsi
  mov    %rbp,%rcx
  mov    0x58(%rsp),%rdi
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %rbp,%r8
  mov    %r14,%rdx
  mov    0x58(%rsp),%rdi
  mov    0x8(%rsp),%rcx
  call   <merge@plt>
  mov    0x50(%rsp),%rsi
  mov    0x48(%rsp),%rdi
L37:
  mov    %r15,%rax
  mov    %rdi,0x58(%rsp)
  sub    %rbp,%rax
  mov    %rsi,0x60(%rsp)
  cmp    $0x1,%rax
  jbe    L175
  lea    0x60(%rsp),%rsi
  lea    0x58(%rsp),%rdi
  call   <swap@plt>
  lea    (%r15,%rbp,1),%r9
  mov    0x60(%rsp),%rsi
  mov    %rbp,%rdx
  shr    %r9
  mov    0x58(%rsp),%rdi
  mov    %r9,%rcx
  mov    %r9,0x8(%rsp)
  call   <split>
  mov    0x8(%rsp),%rdx
  mov    0x60(%rsp),%rsi
  mov    %r15,%rcx
  mov    0x58(%rsp),%rdi
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %r15,%r8
  mov    %rbp,%rdx
  mov    0x58(%rsp),%rdi
  mov    0x8(%rsp),%rcx
  call   <merge@plt>
  mov    0x50(%rsp),%rsi
  mov    0x48(%rsp),%rdi
L175:
  mov    %r15,%r8
  mov    %rbp,%rcx
  mov    %r14,%rdx
  call   <merge@plt>
  mov    0x40(%rsp),%rsi
  mov    0x38(%rsp),%rdi
L117:
  mov    %rbx,%rax
  mov    %rdi,0x58(%rsp)
  sub    %r15,%rax
  mov    %rsi,0x60(%rsp)
  cmp    $0x1,%rax
  jbe    L107
  lea    0x60(%rsp),%rsi
  lea    0x58(%rsp),%rdi
  call   <swap@plt>
  lea    (%rbx,%r15,1),%rbp
  mov    0x60(%rsp),%rsi
  mov    %r15,%rdx
  shr    %rbp
  mov    0x58(%rsp),%rdi
  mov    %rbp,%rcx
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %rbx,%rcx
  mov    %rbp,%rdx
  mov    0x58(%rsp),%rdi
  call   <split>
  mov    0x60(%rsp),%rsi
  mov    %rbx,%r8
  mov    %rbp,%rcx
  mov    0x58(%rsp),%rdi
  mov    %r15,%rdx
  call   <merge@plt>
  mov    0x40(%rsp),%rsi
  mov    0x38(%rsp),%rdi
L107:
  mov    %rbx,%r8
  mov    %r15,%rcx
  mov    %r14,%rdx
  call   <merge@plt>
  mov    0x30(%rsp),%rsi
  mov    0x28(%rsp),%rdi
L24:
  mov    %rbx,%r8
  mov    %r14,%rcx
  mov    %r13,%rdx
  call   <merge@plt>
  mov    0x10(%rsp),%rsi
  mov    0x18(%rsp),%rdi
L164:
  mov    %rbx,%r8
  mov    %r13,%rcx
  mov    %r12,%rdx
  call   <merge@plt>
L114:
  mov    0x68(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L86
  add    $0x78,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L86:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void split(int64_t *a, int64_t *b, size_t begin, size_t end) {
  if (end - begin < 2)
    return;
  swap(&a, &b);
  size_t mid = (begin + end) / 2;
#pragma omp parallel shared(a, b) firstprivate(begin, mid, end)
  {
#pragma omp sections
    {
#pragma omp section
      split(a, b, begin, mid);
#pragma omp section
      split(a, b, mid, end);
    }
  }
  merge(a, b, begin, mid, end);
}
```