user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<merge>:
  endbr64
  push   %rbp
  movslq %esi,%rax
  mov    %rsp,%rbp
  push   %r15
  mov    %rdi,%r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  mov    %edx,%ebx
  mov    %ebx,%edi
  sub    %ebx,%ecx
  sub    %eax,%edi
  mov    %ecx,%r13d
  sub    $0x28,%rsp
  lea    0x1(%rdi),%r8d
  mov    %fs:0x28,%rdx
  mov    %rdx,-0x38(%rbp)
  xor    %edx,%edx
  movslq %r8d,%rdx
  mov    %rsp,%rsi
  mov    %edi,-0x44(%rbp)
  lea    0xf(,%rdx,4),%rdx
  mov    %rdx,%rcx
  and    $0xfffffffffffff000,%rdx
  sub    %rdx,%rsi
  and    $0xfffffffffffffff0,%rcx
  cmp    %rsi,%rsp
  je     L70
L207:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rsi,%rsp
  jne    L207
L70:
  and    $0xfff,%ecx
  sub    %rcx,%rsp
  test   %rcx,%rcx
  jne    L158
L74:
  movslq %r13d,%r12
  mov    %rsp,%rsi
  mov    %rsp,%r10
  lea    0xf(,%r12,4),%rdx
  mov    %rdx,%rcx
  and    $0xfffffffffffff000,%rdx
  sub    %rdx,%rsi
  and    $0xfffffffffffffff0,%rcx
  cmp    %rsi,%rsp
  je     L148
L97:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rsi,%rsp
  jne    L97
L148:
  and    $0xfff,%ecx
  sub    %rcx,%rsp
  test   %rcx,%rcx
  jne    L173
L145:
  mov    %rsp,%r14
  test   %r8d,%r8d
  jle    L196
  mov    -0x44(%rbp),%edx
  mov    %r10,%rdi
  lea    (%r15,%rax,4),%rsi
  mov    %r8d,-0x50(%rbp)
  lea    0x4(,%rdx,4),%rdx
  call   <memcpy@plt>
  test   %r13d,%r13d
  mov    -0x50(%rbp),%r8d
  mov    %rax,%r10
  jle    L156
  add    $0x1,%ebx
  lea    0x0(,%r12,4),%rdx
  mov    %r14,%rdi
  mov    %r8d,-0x48(%rbp)
  movslq %ebx,%rbx
  mov    %rax,-0x50(%rbp)
  xor    %r12d,%r12d
  lea    (%r15,%rbx,4),%rsi
  xor    %ebx,%ebx
  call   <memcpy@plt>
  mov    -0x50(%rbp),%r10
  mov    -0x48(%rbp),%r8d
  mov    $0x1,%eax
  jmp    L160
  nopw   0x0(%rax,%rax,1)
L104:
  add    $0x1,%r12d
  mov    %edx,-0x4(%r15,%rax,4)
  add    $0x1,%rax
  cmp    %r8d,%r12d
  jge    L82
L54:
  cmp    %r13d,%ebx
  jge    L82
L160:
  movslq %ebx,%rcx
  movslq %r12d,%rdx
  mov    (%r14,%rcx,4),%esi
  mov    (%r10,%rdx,4),%edx
  mov    %eax,%ecx
  cmp    %esi,%edx
  jle    L104
  mov    %esi,%edx
  add    $0x1,%ebx
  mov    %edx,-0x4(%r15,%rax,4)
  add    $0x1,%rax
  cmp    %r8d,%r12d
  jl     L54
L82:
  cmp    %r12d,%r8d
  mov    %r8d,-0x50(%rbp)
  jle    L117
  movslq %ecx,%rax
  mov    %ecx,-0x48(%rbp)
  lea    (%r15,%rax,4),%rdi
  mov    -0x44(%rbp),%eax
  sub    %r12d,%eax
  lea    0x4(,%rax,4),%rdx
  movslq %r12d,%rax
  lea    (%r10,%rax,4),%rsi
  call   <memcpy@plt>
  mov    -0x48(%rbp),%ecx
  mov    -0x50(%rbp),%r8d
  add    %ecx,%r8d
  mov    %r8d,%ecx
  sub    %r12d,%ecx
L117:
  cmp    %ebx,%r13d
  jle    L20
L112:
  sub    $0x1,%r13d
  movslq %ecx,%rcx
  sub    %ebx,%r13d
  movslq %ebx,%rbx
  lea    (%r15,%rcx,4),%rdi
  lea    0x4(,%r13,4),%rdx
  lea    (%r14,%rbx,4),%rsi
  call   <memcpy@plt>
L20:
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L59
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
  nopl   0x0(%rax,%rax,1)
L158:
  orq    $0x0,-0x8(%rsp,%rcx,1)
  jmp    L74
L196:
  test   %r13d,%r13d
  jle    L156
  add    $0x1,%ebx
  lea    0x0(,%r12,4),%rdx
  mov    %r14,%rdi
  movslq %ebx,%rbx
  lea    (%r15,%rbx,4),%rsi
  xor    %ebx,%ebx
  call   <memcpy@plt>
  xor    %ecx,%ecx
  jmp    L112
L156:
  xor    %ecx,%ecx
  xor    %ebx,%ebx
  xor    %r12d,%r12d
  jmp    L82
L173:
  orq    $0x0,-0x8(%rsp,%rcx,1)
  jmp    L145
L59:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void merge(int a[], int l, int m, int r) {
  int l1 = m - l + 1;
  int l2 = r - m;
  int i = 0, j = 0, k = 0;
  int a1[l1], a2[l2];
  for (i = 0; i < l1; i++)
    a1[i] = a[l + i];
  for (i = 0; i < l2; i++)
    a2[i] = a[m + 1 + i];
  i = 0;
  j = 0;
  k = 0;
  while ((i < l1) && (j < l2)) {
    if (a1[i] <= a2[j])
      a[k++] = a1[i++];
    else
      a[k++] = a2[j++];
  }
  while (i < l1)
    a[k++] = a1[i++];
  while (j < l2)
    a[k++] = a2[j++];
}
```