user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<merge>:
  endbr64
  push   %r15
  mov    %rdx,%r8
  sub    %rdx,%rcx
  push   %r14
  sub    %rsi,%r8
  mov    %rcx,%r14
  push   %r13
  lea    0x1(%r8),%r15
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  lea    0x0(,%r15,8),%edi
  push   %rbx
  mov    %rsi,%rbx
  sub    $0x18,%rsp
  mov    %r8,0x8(%rsp)
  mov    %rdx,(%rsp)
  call   <malloc@plt>
  lea    0x0(,%r14,8),%edi
  mov    %rax,%r12
  call   <malloc@plt>
  test   %r15,%r15
  mov    (%rsp),%rsi
  mov    0x8(%rsp),%r8
  mov    %rax,%r13
  jle    L235
  lea    0x8(,%rbx,8),%rcx
  lea    0x0(%rbp,%rcx,1),%rax
  cmp    %rax,%r12
  je     L14
  cmp    $0x2,%r8
  jbe    L14
  mov    %r15,%rdx
  mov    %rbp,%rdi
  mov    %r12,%rax
  shr    %rdx
  sub    %r12,%rdi
  shl    $0x4,%rdx
  lea    -0x8(%rdi,%rcx,1),%rcx
  add    %r12,%rdx
  nopw   0x0(%rax,%rax,1)
L139:
  movdqu (%rax,%rcx,1),%xmm0
  add    $0x10,%rax
  movups %xmm0,-0x10(%rax)
  cmp    %rax,%rdx
  jne    L139
  mov    %r15,%rax
  and    $0xfffffffffffffffe,%rax
  test   $0x1,%r15b
  je     L235
  lea    (%rbx,%rax,1),%rdx
  mov    0x0(%rbp,%rdx,8),%rdx
  mov    %rdx,(%r12,%rax,8)
L235:
  xor    %eax,%eax
  xor    %ecx,%ecx
  test   %r14,%r14
  jle    L230
  lea    -0x1(%r14),%rax
  lea    0x1(%rsi),%rdx
  lea    0x10(,%rsi,8),%rsi
  cmp    $0x2,%rax
  jbe    L251
  lea    0x0(%rbp,%rsi,1),%rax
  cmp    %rax,%r13
  je     L251
  mov    %r14,%rcx
  mov    %rbp,%rdi
  mov    %r13,%rax
  shr    %rcx
  sub    %r13,%rdi
  shl    $0x4,%rcx
  lea    -0x8(%rdi,%rsi,1),%rsi
  add    %r13,%rcx
  nopl   0x0(%rax)
L319:
  movdqu (%rax,%rsi,1),%xmm1
  add    $0x10,%rax
  movups %xmm1,-0x10(%rax)
  cmp    %rax,%rcx
  jne    L319
  mov    %r14,%rcx
  and    $0xfffffffffffffffe,%rcx
  test   $0x1,%r14b
  je     L159
  lea    (%rdx,%rcx,1),%rax
  mov    0x0(%rbp,%rax,8),%rax
  mov    %rax,0x0(%r13,%rcx,8)
L159:
  xor    %eax,%eax
  test   %r15,%r15
  jle    L171
  xor    %edx,%edx
  nopw   0x0(%rax,%rax,1)
L58:
  mov    (%r12,%rdx,8),%rsi
  mov    0x0(%r13,%rax,8),%rcx
  add    $0x1,%rbx
  cmp    %rsi,%rcx
  jle    L347
  mov    %rsi,-0x8(%rbp,%rbx,8)
  lea    0x1(%rdx),%rcx
  cmp    %rax,%r14
  jle    L230
  cmp    %rdx,%r8
  jle    L230
  mov    %rcx,%rdx
  jmp    L58
  nopw   0x0(%rax,%rax,1)
L347:
  mov    %rcx,-0x8(%rbp,%rbx,8)
  add    $0x1,%rax
  cmp    %rdx,%r15
  jle    L316
  cmp    %rax,%r14
  jg     L58
L316:
  mov    %rdx,%rcx
L230:
  cmp    %rcx,%r15
  jle    L25
  lea    0x0(,%rcx,8),%r10
  lea    0x0(,%rbx,8),%r9
  sub    %rcx,%r8
  lea    (%r10,%r12,1),%rdx
  lea    0x0(%rbp,%r9,1),%rdi
  lea    0x8(%rdx),%rsi
  cmp    %rsi,%rdi
  je     L112
  cmp    $0x2,%r8
  jbe    L112
  lea    0x1(%r8),%r9
  sub    %rdx,%rdi
  mov    %r9,%rsi
  shr    %rsi
  shl    $0x4,%rsi
  add    %rdx,%rsi
  nopw   0x0(%rax,%rax,1)
L164:
  movdqu (%rdx),%xmm2
  movups %xmm2,(%rdi,%rdx,1)
  add    $0x10,%rdx
  cmp    %rsi,%rdx
  jne    L164
  mov    %r9,%rdx
  and    $0xfffffffffffffffe,%rdx
  add    %rdx,%rcx
  lea    (%rbx,%rdx,1),%rsi
  cmp    %rdx,%r9
  je     L265
  mov    (%r12,%rcx,8),%rdx
  mov    %rdx,0x0(%rbp,%rsi,8)
L265:
  lea    0x1(%r8,%rbx,1),%rbx
L25:
  cmp    %rax,%r14
  jle    L205
L171:
  lea    0x0(,%rax,8),%r9
  lea    0x0(,%rbx,8),%r8
  mov    %r14,%rsi
  lea    0x0(%r13,%r9,1),%rdx
  lea    0x0(%rbp,%r8,1),%rdi
  sub    %rax,%rsi
  lea    0x8(%rdx),%rcx
  cmp    %rcx,%rdi
  je     L260
  lea    -0x1(%rsi),%r10
  cmp    $0x2,%r10
  jbe    L260
  mov    %rsi,%rcx
  sub    %rdx,%rdi
  shr    %rcx
  shl    $0x4,%rcx
  add    %rdx,%rcx
  nopw   0x0(%rax,%rax,1)
L279:
  movdqu (%rdx),%xmm3
  movups %xmm3,(%rdi,%rdx,1)
  add    $0x10,%rdx
  cmp    %rdx,%rcx
  jne    L279
  mov    %rsi,%rdx
  and    $0xfffffffffffffffe,%rdx
  add    %rdx,%rax
  add    %rdx,%rbx
  cmp    %rsi,%rdx
  je     L205
  mov    0x0(%r13,%rax,8),%rax
  mov    %rax,0x0(%rbp,%rbx,8)
L205:
  mov    %r12,%rdi
  call   <free@plt>
  add    $0x18,%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)
L251:
  mov    %rbp,%rdx
  mov    %r13,%rax
  lea    0x0(%r13,%r14,8),%rdi
  sub    %r13,%rdx
  lea    -0x10(%rdx,%rsi,1),%rcx
  nopl   0x0(%rax,%rax,1)
L197:
  mov    0x8(%rcx,%rax,1),%rdx
  add    $0x8,%rax
  mov    %rdx,-0x8(%rax)
  cmp    %rax,%rdi
  jne    L197
  jmp    L159
  nop
L112:
  sub    %r10,%r9
  lea    (%r12,%r15,8),%rdi
  sub    %r12,%r9
  lea    0x0(%rbp,%r9,1),%rcx
  jmp    L209
  nopl   0x0(%rax)
L243:
  add    $0x8,%rsi
L209:
  mov    (%rdx),%r9
  mov    %r9,(%rcx,%rdx,1)
  mov    %rsi,%rdx
  cmp    %rsi,%rdi
  jne    L243
  jmp    L265
L260:
  sub    %r9,%r8
  lea    0x0(%r13,%r14,8),%rsi
  sub    %r13,%r8
  add    %r8,%rbp
  jmp    L245
L304:
  add    $0x8,%rcx
L245:
  mov    (%rdx),%rax
  mov    %rax,0x0(%rbp,%rdx,1)
  mov    %rcx,%rdx
  cmp    %rcx,%rsi
  jne    L304
  jmp    L205
  nopl   0x0(%rax)
L14:
  mov    %rbp,%rdx
  mov    %r12,%rax
  lea    (%r12,%r15,8),%rdi
  sub    %r12,%rdx
  lea    -0x8(%rdx,%rcx,1),%rcx
  nopw   0x0(%rax,%rax,1)
L142:
  mov    (%rcx,%rax,1),%rdx
  add    $0x8,%rax
  mov    %rdx,-0x8(%rax)
  cmp    %rdi,%rax
  jne    L142
  jmp    L235
```

assistant: ```c
void merge(long arr[], long start, long mid, long end) {
  long len_l = mid - start + 1;
  long len_r = end - mid;
  long *l = (long *)malloc(sizeof(long) * len_l);
  long *r = (long *)malloc(sizeof(long) * len_r);
  long i, j, k;
  for (i = 0; i < len_l; i++)
    l[i] = arr[start + i];
  for (i = 0; i < len_r; i++)
    r[i] = arr[mid + 1 + i];
  i = 0;
  j = 0;
  k = start;
  while (i < len_l && j < len_r) {
    if (l[i] < r[j])
      arr[k++] = l[i++];
    else
      arr[k++] = r[j++];
  }
  while (i < len_l)
    arr[k++] = l[i++];
  while (j < len_r)
    arr[k++] = r[j++];
  free(l);
  free(r);
}
```