user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<merge>:
  endbr64
  push   %r15
  mov    %rdx,%r8
  sub    %rdx,%rcx
  push   %r14
  sub    %rsi,%r8
  mov    %rcx,%r14
  push   %r13
  lea    0x0(,%r14,8),%r15
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  mov    %rsi,%rbx
  lea    0x1(%r8),%rsi
  lea    0x0(,%rsi,8),%rdi
  sub    $0x28,%rsp
  mov    %r8,0x18(%rsp)
  mov    %rsi,0x8(%rsp)
  mov    %rdx,0x10(%rsp)
  call   <malloc@plt>
  mov    %r15,%rdi
  mov    %rax,%r12
  call   <malloc@plt>
  mov    0x8(%rsp),%rsi
  mov    0x10(%rsp),%r9
  mov    0x18(%rsp),%r8
  mov    %rax,%r13
  test   %rsi,%rsi
  jle    L135
  lea    0x8(,%rbx,8),%rcx
  lea    0x0(%rbp,%rcx,1),%rax
  cmp    %rax,%r12
  je     L281
  cmp    $0x2,%r8
  jbe    L281
  mov    %rsi,%rdx
  mov    %rbp,%rdi
  mov    %r12,%rax
  shr    %rdx
  sub    %r12,%rdi
  shl    $0x4,%rdx
  lea    -0x8(%rdi,%rcx,1),%rcx
  add    %r12,%rdx
  nopl   0x0(%rax)
L35:
  movdqu (%rax,%rcx,1),%xmm0
  add    $0x10,%rax
  movups %xmm0,-0x10(%rax)
  cmp    %rax,%rdx
  jne    L35
  mov    %rsi,%rax
  and    $0xfffffffffffffffe,%rax
  test   $0x1,%sil
  je     L135
  lea    (%rbx,%rax,1),%rdx
  mov    0x0(%rbp,%rdx,8),%rdx
  mov    %rdx,(%r12,%rax,8)
L135:
  xor    %eax,%eax
  xor    %ecx,%ecx
  test   %r14,%r14
  jle    L68
  lea    -0x1(%r14),%rax
  lea    0x1(%r9),%rdx
  lea    0x10(,%r9,8),%rdi
  cmp    $0x2,%rax
  jbe    L213
  lea    0x0(%rbp,%rdi,1),%rax
  cmp    %rax,%r13
  je     L213
  mov    %r14,%rcx
  mov    %rbp,%r9
  mov    %r13,%rax
  shr    %rcx
  sub    %r13,%r9
  shl    $0x4,%rcx
  lea    -0x8(%r9,%rdi,1),%rdi
  add    %r13,%rcx
  nopl   0x0(%rax)
L290:
  movdqu (%rax,%rdi,1),%xmm1
  add    $0x10,%rax
  movups %xmm1,-0x10(%rax)
  cmp    %rax,%rcx
  jne    L290
  mov    %r14,%rcx
  and    $0xfffffffffffffffe,%rcx
  test   $0x1,%r14b
  je     L90
  lea    (%rdx,%rcx,1),%rax
  mov    0x0(%rbp,%rax,8),%rax
  mov    %rax,0x0(%r13,%rcx,8)
L90:
  xor    %eax,%eax
  test   %rsi,%rsi
  jle    L279
  xor    %edx,%edx
  nopw   0x0(%rax,%rax,1)
L235:
  mov    (%r12,%rdx,8),%rdi
  mov    0x0(%r13,%rax,8),%rcx
  cmp    %rdi,%rcx
  jl     L29
L322:
  mov    %rdi,0x0(%rbp,%rbx,8)
  lea    0x1(%rdx),%rcx
  add    $0x1,%rbx
  cmp    %rax,%r14
  jle    L68
  cmp    %rdx,%r8
  jle    L68
  mov    %rcx,%rdx
  mov    0x0(%r13,%rax,8),%rcx
  mov    (%r12,%rdx,8),%rdi
  cmp    %rdi,%rcx
  jge    L322
L29:
  mov    %rcx,0x0(%rbp,%rbx,8)
  add    $0x1,%rax
  add    $0x1,%rbx
  cmp    %rdx,%rsi
  jle    L310
  cmp    %rax,%r14
  jg     L235
L310:
  mov    %rdx,%rcx
L68:
  cmp    %rcx,%rsi
  jle    L152
  lea    0x0(,%rcx,8),%r11
  lea    0x0(,%rbx,8),%r10
  sub    %rcx,%r8
  lea    (%r11,%r12,1),%rdx
  lea    0x0(%rbp,%r10,1),%r9
  lea    0x8(%rdx),%rdi
  cmp    %rdi,%r9
  je     L61
  cmp    $0x2,%r8
  jbe    L61
  lea    0x1(%r8),%rdi
  sub    %rdx,%r9
  mov    %rdi,%rsi
  shr    %rsi
  shl    $0x4,%rsi
  add    %rdx,%rsi
  nopl   0x0(%rax)
L18:
  movdqu (%rdx),%xmm2
  movups %xmm2,(%r9,%rdx,1)
  add    $0x10,%rdx
  cmp    %rdx,%rsi
  jne    L18
  mov    %rdi,%rdx
  and    $0xfffffffffffffffe,%rdx
  add    %rdx,%rcx
  lea    (%rbx,%rdx,1),%rsi
  cmp    %rdx,%rdi
  je     L98
  mov    (%r12,%rcx,8),%rdx
  mov    %rdx,0x0(%rbp,%rsi,8)
L98:
  lea    0x1(%r8,%rbx,1),%rbx
L152:
  cmp    %rax,%r14
  jle    L96
L279:
  lea    0x0(,%rax,8),%r8
  lea    0x0(,%rbx,8),%rdi
  sub    %rax,%r14
  lea    0x0(%r13,%r8,1),%rdx
  lea    0x0(%rbp,%rdi,1),%rsi
  lea    0x8(%rdx),%rcx
  cmp    %rcx,%rsi
  je     L9
  lea    -0x1(%r14),%r9
  cmp    $0x2,%r9
  jbe    L9
  mov    %r14,%rcx
  sub    %rdx,%rsi
  shr    %rcx
  shl    $0x4,%rcx
  add    %rdx,%rcx
L270:
  movdqu (%rdx),%xmm3
  movups %xmm3,(%rsi,%rdx,1)
  add    $0x10,%rdx
  cmp    %rdx,%rcx
  jne    L270
  mov    %r14,%rdx
  and    $0xfffffffffffffffe,%rdx
  add    %rdx,%rax
  add    %rdx,%rbx
  cmp    %r14,%rdx
  je     L96
  mov    0x0(%r13,%rax,8),%rax
  mov    %rax,0x0(%rbp,%rbx,8)
L96:
  mov    %r12,%rdi
  call   <free@plt>
  add    $0x28,%rsp
  mov    %r13,%rdi
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1060 <free@plt>
  nopl   0x0(%rax,%rax,1)
L213:
  mov    %rbp,%rdx
  mov    %r13,%rax
  lea    (%r15,%r13,1),%r9
  sub    %r13,%rdx
  lea    -0x10(%rdx,%rdi,1),%rcx
  nopw   0x0(%rax,%rax,1)
L198:
  mov    0x8(%rcx,%rax,1),%rdx
  add    $0x8,%rax
  mov    %rdx,-0x8(%rax)
  cmp    %r9,%rax
  jne    L198
  jmp    L90
  nop
L61:
  sub    %r11,%r10
  lea    (%r12,%rsi,8),%rsi
  sub    %r12,%r10
  lea    0x0(%rbp,%r10,1),%rcx
  jmp    L48
  nopl   0x0(%rax)
L142:
  add    $0x8,%rdi
L48:
  mov    (%rdx),%r9
  mov    %r9,(%rcx,%rdx,1)
  mov    %rdi,%rdx
  cmp    %rdi,%rsi
  jne    L142
  jmp    L98
L9:
  sub    %r8,%rdi
  add    %r13,%r15
  sub    %r13,%rdi
  add    %rdi,%rbp
  jmp    L39
  xchg   %ax,%ax
L348:
  add    $0x8,%rcx
L39:
  mov    (%rdx),%rax
  mov    %rax,0x0(%rbp,%rdx,1)
  mov    %rcx,%rdx
  cmp    %rcx,%r15
  jne    L348
  jmp    L96
  nopl   0x0(%rax)
L281:
  mov    %rbp,%rdx
  mov    %r12,%rax
  lea    (%r12,%rsi,8),%rdi
  sub    %r12,%rdx
  lea    -0x8(%rdx,%rcx,1),%rcx
  nopw   0x0(%rax,%rax,1)
L278:
  mov    (%rcx,%rax,1),%rdx
  add    $0x8,%rax
  mov    %rdx,-0x8(%rax)
  cmp    %rdi,%rax
  jne    L278
  jmp    L135
```

assistant: ```c
void merge(long long *arr, long long l, long long m, long long r) {
  long long i, j, k;
  long long n1 = m - l + 1;
  long long n2 = r - m;
  long long *L = (long long *)malloc(n1 * sizeof(long long));
  long long *R = (long long *)malloc(n2 * sizeof(long long));
  for (i = 0; i < n1; i++)
    L[i] = arr[l + i];
  for (j = 0; j < n2; j++)
    R[j] = arr[m + 1 + j];
  i = 0;
  j = 0;
  k = l;
  while (i < n1 && j < n2) {
    if (L[i] <= R[j]) {
      arr[k] = L[i];
      i++;
    } else {
      arr[k] = R[j];
      j++;
    }
    k++;
  }
  while (i < n1) {
    arr[k] = L[i];
    i++;
    k++;
  }
  while (j < n2) {
    arr[k] = R[j];
    j++;
    k++;
  }
  free(L);
  free(R);
}
```