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    %rsi,%r10
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %ecx,%ebx
  add    $0x1,%ecx
  cmp    %ebx,%edx
  jg     L257
  cmp    %r8d,%ecx
  jg     L257
  lea    0x1(%rdx),%eax
  movslq %edx,%r12
  cltq
  nop
L254:
  movslq %ecx,%rbp
  mov    (%rdi,%r12,4),%r9d
  mov    %eax,%r11d
  mov    (%rdi,%rbp,4),%esi
  cmp    %r9d,%esi
  jl     L109
L33:
  mov    %r9d,-0x4(%r10,%rax,4)
  add    $0x1,%edx
  add    $0x1,%rax
  cmp    %ecx,%r8d
  jl     L44
  cmp    %edx,%ebx
  jl     L213
  movslq %edx,%r12
  mov    (%rdi,%rbp,4),%esi
  mov    %eax,%r11d
  mov    (%rdi,%r12,4),%r9d
  cmp    %r9d,%esi
  jge    L33
L109:
  mov    %esi,-0x4(%r10,%rax,4)
  add    $0x1,%ecx
  add    $0x1,%rax
  cmp    %edx,%ebx
  jl     L213
  cmp    %ecx,%r8d
  jge    L254
L44:
  cmp    %edx,%ebx
  jl     L213
  movslq %r11d,%r12
  movslq %edx,%rsi
  mov    %ebx,%ebp
  shl    $0x2,%r12
  lea    0x1(%rsi),%rax
  sub    %edx,%ebp
  lea    (%r10,%r12,1),%r9
  lea    0x0(,%rax,4),%r14
  lea    (%rdi,%r14,1),%r15
  mov    %r9,%r13
  sub    %r15,%r13
  cmp    $0x8,%r13
  jbe    L14
  cmp    $0x2,%ebp
  jbe    L14
  lea    0x1(%rbp),%r13d
  lea    -0x4(%rdi,%r14,1),%r12
  xor    %eax,%eax
  mov    %r13d,%esi
  shr    $0x2,%esi
  shl    $0x4,%rsi
  xchg   %ax,%ax
L85:
  movdqu (%r12,%rax,1),%xmm0
  movups %xmm0,(%r9,%rax,1)
  add    $0x10,%rax
  cmp    %rsi,%rax
  jne    L85
  mov    %r13d,%esi
  and    $0xfffffffc,%esi
  add    %esi,%edx
  lea    (%r11,%rsi,1),%eax
  cmp    %esi,%r13d
  je     L63
  movslq %edx,%rsi
  mov    (%rdi,%rsi,4),%r9d
  movslq %eax,%rsi
  add    $0x1,%eax
  mov    %r9d,(%r10,%rsi,4)
  lea    0x1(%rdx),%esi
  cmp    %ebx,%esi
  jg     L63
  movslq %esi,%rsi
  cltq
  add    $0x2,%edx
  lea    0x0(,%rsi,4),%r12
  mov    (%rdi,%rsi,4),%esi
  lea    0x0(,%rax,4),%r9
  mov    %esi,(%r10,%rax,4)
  cmp    %ebx,%edx
  jg     L63
  mov    0x4(%rdi,%r12,1),%eax
  mov    %eax,0x4(%r10,%r9,1)
L63:
  lea    0x1(%r11,%rbp,1),%r11d
L213:
  cmp    %ecx,%r8d
  jl     L30
  movslq %r11d,%rbx
  movslq %ecx,%rdx
  mov    %r8d,%r9d
  shl    $0x2,%rbx
  lea    0x1(%rdx),%rax
  sub    %ecx,%r9d
  lea    (%r10,%rbx,1),%rsi
  lea    0x0(,%rax,4),%rbp
  lea    (%rdi,%rbp,1),%r13
  mov    %rsi,%r12
  sub    %r13,%r12
  cmp    $0x8,%r12
  jbe    L55
  cmp    $0x2,%r9d
  jbe    L55
  add    $0x1,%r9d
  lea    -0x4(%rdi,%rbp,1),%rbx
  xor    %eax,%eax
  mov    %r9d,%edx
  shr    $0x2,%edx
  shl    $0x4,%rdx
  nopl   0x0(%rax,%rax,1)
L174:
  movdqu (%rbx,%rax,1),%xmm1
  movups %xmm1,(%rsi,%rax,1)
  add    $0x10,%rax
  cmp    %rax,%rdx
  jne    L174
  mov    %r9d,%eax
  and    $0xfffffffc,%eax
  add    %eax,%ecx
  add    %eax,%r11d
  cmp    %eax,%r9d
  je     L30
  movslq %ecx,%rax
  mov    (%rdi,%rax,4),%edx
  movslq %r11d,%rax
  add    $0x1,%r11d
  mov    %edx,(%r10,%rax,4)
  lea    0x1(%rcx),%eax
  cmp    %eax,%r8d
  jl     L30
  cltq
  movslq %r11d,%r11
  add    $0x2,%ecx
  lea    0x0(,%rax,4),%rsi
  mov    (%rdi,%rax,4),%eax
  lea    0x0(,%r11,4),%rdx
  mov    %eax,(%r10,%r11,4)
  cmp    %ecx,%r8d
  jl     L30
  mov    0x4(%rdi,%rsi,1),%eax
  mov    %eax,0x4(%r10,%rdx,1)
L30:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax,%rax,1)
L55:
  mov    %rdx,%rcx
  neg    %rcx
  lea    (%rbx,%rcx,4),%rcx
  add    %rcx,%r10
  jmp    L102
  nopw   0x0(%rax,%rax,1)
L89:
  add    $0x1,%rax
L102:
  mov    (%rdi,%rdx,4),%ecx
  mov    %ecx,(%r10,%rdx,4)
  mov    %rax,%rdx
  cmp    %eax,%r8d
  jge    L89
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  xchg   %ax,%ax
L14:
  mov    %rsi,%rdx
  neg    %rdx
  lea    (%r12,%rdx,4),%r9
  add    %r10,%r9
  jmp    L50
  nop
L235:
  add    $0x1,%rax
L50:
  mov    (%rdi,%rsi,4),%edx
  mov    %edx,(%r9,%rsi,4)
  mov    %rax,%rsi
  cmp    %eax,%ebx
  jge    L235
  jmp    L63
  nopw   0x0(%rax,%rax,1)
L257:
  mov    %edx,%r11d
  jmp    L44
```

assistant: ```c
void __merge(int from[], int to[], int start, int middle, int end) {
  int pointer1, pointer2, index;
  pointer1 = start;
  pointer2 = middle + 1;
  index = start;
  while (pointer1 <= middle && pointer2 <= end) {
    if (from[pointer1] <= from[pointer2]) {
      to[index] = from[pointer1];
      index++;
      pointer1++;
    } else {
      to[index] = from[pointer2];
      index++;
      pointer2++;
    }
  }
  while (pointer1 <= middle) {
    to[index] = from[pointer1];
    index++;
    pointer1++;
  }
  while (pointer2 <= end) {
    to[index] = from[pointer2];
    index++;
    pointer2++;
  }
}
```