user: 这段汇编代码用C语言表示是什么样的:

```asm
<merge>:
  endbr64
  push   %r15
  mov    %rsi,%r9
  mov    %rdi,%r10
  mov    %rdx,%rsi
  push   %r14
  mov    %ecx,%eax
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  test   %r8d,%r8d
  jle    L170
  test   %ecx,%ecx
  jle    L170
  mov    $0x1,%r11d
  xor    %edx,%edx
  xor    %ecx,%ecx
  xor    %r13d,%r13d
  xor    %r12d,%r12d
  nopw   0x0(%rax,%rax,1)
L116:
  mov    (%r10,%r13,4),%ebp
  mov    (%r9,%r12,4),%ebx
  mov    %r11d,%edi
  cmp    %ebp,%ebx
  jle    L194
L12:
  mov    %ebp,-0x4(%rsi,%r11,4)
  add    $0x1,%ecx
  add    $0x1,%r11
  cmp    %edx,%r8d
  jle    L273
  cmp    %ecx,%eax
  jle    L213
  movslq %ecx,%r13
  mov    (%r9,%r12,4),%ebx
  mov    %r11d,%edi
  mov    (%r10,%r13,4),%ebp
  cmp    %ebp,%ebx
  jg     L12
L194:
  mov    %ebx,-0x4(%rsi,%r11,4)
  add    $0x1,%edx
  add    $0x1,%r11
  cmp    %ecx,%eax
  jle    L213
  cmp    %edx,%r8d
  jle    L273
  movslq %edx,%r12
  jmp    L116
L170:
  xor    %edi,%edi
  xor    %edx,%edx
  xor    %ecx,%ecx
  cs nopw 0x0(%rax,%rax,1)
L273:
  cmp    %ecx,%eax
  jle    L213
  movslq %edi,%r13
  movslq %ecx,%rbx
  mov    %eax,%r12d
  lea    0x1(%rbx),%r15
  shl    $0x2,%r13
  sub    %ecx,%r12d
  lea    (%rsi,%r13,1),%rbp
  lea    0x0(,%r15,4),%r14
  mov    %r15,-0x10(%rsp)
  mov    %rbp,%r11
  lea    (%r10,%r14,1),%r15
  sub    %r15,%r11
  cmp    $0x8,%r11
  jbe    L247
  lea    -0x1(%r12),%r15d
  cmp    $0x2,%r15d
  jbe    L247
  mov    %r12d,%ebx
  lea    -0x4(%r10,%r14,1),%r13
  xor    %r11d,%r11d
  shr    $0x2,%ebx
  shl    $0x4,%rbx
  nopw   0x0(%rax,%rax,1)
L52:
  movdqu 0x0(%r13,%r11,1),%xmm0
  movups %xmm0,0x0(%rbp,%r11,1)
  add    $0x10,%r11
  cmp    %rbx,%r11
  jne    L52
  mov    %r12d,%r11d
  and    $0xfffffffc,%r11d
  add    %r11d,%ecx
  lea    (%rdi,%r11,1),%ebx
  cmp    %r11d,%r12d
  je     L126
  movslq %ecx,%r13
  lea    0x1(%rbx),%ebp
  lea    0x1(%rcx),%r11d
  movslq %ebx,%rbx
  mov    (%r10,%r13,4),%r13d
  mov    %r13d,(%rsi,%rbx,4)
  cmp    %r11d,%eax
  jle    L126
  movslq %r11d,%r11
  movslq %ebp,%rbx
  add    $0x2,%ecx
  lea    0x0(,%r11,4),%r13
  mov    (%r10,%r11,4),%r11d
  lea    0x0(,%rbx,4),%rbp
  mov    %r11d,(%rsi,%rbx,4)
  cmp    %ecx,%eax
  jle    L126
  mov    0x4(%r10,%r13,1),%ecx
  mov    %ecx,0x4(%rsi,%rbp,1)
L126:
  add    %r12d,%edi
L213:
  cmp    %edx,%r8d
  jle    L57
  movslq %edi,%rbp
  movslq %edx,%r10
  mov    %r8d,%ebx
  shl    $0x2,%rbp
  lea    0x1(%r10),%rcx
  sub    %edx,%ebx
  lea    (%rsi,%rbp,1),%r11
  lea    0x0(,%rcx,4),%r12
  lea    (%r9,%r12,1),%r14
  mov    %r11,%r13
  sub    %r14,%r13
  cmp    $0x8,%r13
  jbe    L47
  lea    -0x1(%rbx),%r13d
  cmp    $0x2,%r13d
  jbe    L47
  mov    %ebx,%r10d
  lea    -0x4(%r9,%r12,1),%rbp
  xor    %ecx,%ecx
  shr    $0x2,%r10d
  shl    $0x4,%r10
  nopl   0x0(%rax,%rax,1)
L219:
  movdqu 0x0(%rbp,%rcx,1),%xmm1
  movups %xmm1,(%r11,%rcx,1)
  add    $0x10,%rcx
  cmp    %rcx,%r10
  jne    L219
  mov    %ebx,%ecx
  and    $0xfffffffc,%ecx
  add    %ecx,%edx
  add    %ecx,%edi
  cmp    %ecx,%ebx
  je     L57
  movslq %edx,%r11
  lea    0x1(%rdi),%r10d
  lea    0x1(%rdx),%ecx
  movslq %edi,%rdi
  mov    (%r9,%r11,4),%r11d
  mov    %r11d,(%rsi,%rdi,4)
  cmp    %ecx,%r8d
  jle    L57
  movslq %ecx,%rcx
  movslq %r10d,%rdi
  add    $0x2,%edx
  lea    0x0(,%rcx,4),%r11
  mov    (%r9,%rcx,4),%ecx
  lea    0x0(,%rdi,4),%r10
  mov    %ecx,(%rsi,%rdi,4)
  cmp    %r8d,%edx
  jge    L57
  mov    0x4(%r9,%r11,1),%edx
  mov    %edx,0x4(%rsi,%r10,1)
L57:
  pop    %rbx
  add    %r8d,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax,%rax,1)
L247:
  mov    %rbx,%rcx
  mov    -0x10(%rsp),%r11
  neg    %rcx
  lea    0x0(%r13,%rcx,4),%rbp
  add    %rsi,%rbp
  jmp    L141
  nopl   (%rax)
L101:
  add    $0x1,%r11
L141:
  mov    (%r10,%rbx,4),%ecx
  mov    %ecx,0x0(%rbp,%rbx,4)
  mov    %r11,%rbx
  cmp    %r11d,%eax
  jg     L101
  add    %r12d,%edi
  jmp    L213
  nopl   0x0(%rax)
L47:
  mov    %r10,%rdx
  neg    %rdx
  lea    0x0(%rbp,%rdx,4),%rdx
  add    %rdx,%rsi
  jmp    L84
  nopl   0x0(%rax,%rax,1)
L165:
  add    $0x1,%rcx
L84:
  mov    (%r9,%r10,4),%edx
  mov    %edx,(%rsi,%r10,4)
  mov    %rcx,%r10
  cmp    %ecx,%r8d
  jg     L165
  pop    %rbx
  add    %r8d,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
int merge(int *v1, int *v2, int *vettMerge, int size_v1, int size_v2) {
  int size_vettMerge;
  int i, j, k;
  i = j = k = 0;
  while (i < size_v1 && j < size_v2) {
    if (v1[i] < v2[j])
      vettMerge[k++] = v1[i++];
    else
      vettMerge[k++] = v2[j++];
  }
  while (i < size_v1) {
    vettMerge[k++] = v1[i++];
  }
  while (j < size_v2) {
    vettMerge[k++] = v2[j++];
  }
  size_vettMerge = size_v1 + size_v2;
  return size_vettMerge;
}
```