user: 请将以下的汇编代码转换成C语言代码：

```asm
<merge>:
  endbr64
  push   %rbp
  mov    %edx,%r9d
  sub    %esi,%edx
  mov    %rsp,%rbp
  push   %r15
  mov    %esi,%r15d
  push   %r14
  mov    %r8d,%r14d
  push   %r13
  mov    %rdi,%r13
  push   %r12
  push   %rbx
  mov    %ecx,%ebx
  sub    $0x38,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  mov    %r8d,%eax
  sub    %ecx,%eax
  mov    %rsp,%rcx
  lea    0x2(%rdx,%rax,1),%eax
  cltq
  lea    0xf(,%rax,4),%rax
  mov    %rax,%rdx
  and    $0xfffffffffffff000,%rax
  sub    %rax,%rcx
  and    $0xfffffffffffffff0,%rdx
  cmp    %rcx,%rsp
  je     L36
L94:
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  cmp    %rcx,%rsp
  jne    L94
L36:
  and    $0xfff,%edx
  sub    %rdx,%rsp
  test   %rdx,%rdx
  jne    L56
L119:
  mov    %rsp,%r8
  mov    %r15d,%r12d
  cmp    %r9d,%r15d
  jg     L163
  cmp    %r14d,%ebx
  jg     L163
  mov    $0x1,%eax
  movslq %r15d,%r10
  cs nopw 0x0(%rax,%rax,1)
L4:
  movslq %ebx,%rdi
  mov    0x0(%r13,%r10,4),%esi
  mov    %eax,%ecx
  mov    0x0(%r13,%rdi,4),%edx
  cmp    %edx,%esi
  jge    L43
L130:
  mov    %esi,-0x4(%r8,%rax,4)
  add    $0x1,%r12d
  add    $0x1,%rax
  cmp    %r14d,%ebx
  jg     L148
  cmp    %r9d,%r12d
  jg     L148
  movslq %r12d,%r10
  mov    0x0(%r13,%rdi,4),%edx
  mov    %eax,%ecx
  mov    0x0(%r13,%r10,4),%esi
  cmp    %edx,%esi
  jl     L130
L43:
  add    $0x1,%ebx
  mov    %edx,-0x4(%r8,%rax,4)
  add    $0x1,%rax
  cmp    %r14d,%ebx
  jg     L148
  cmp    %r12d,%r9d
  jge    L4
  nopl   0x0(%rax,%rax,1)
L91:
  cmp    %ebx,%r14d
  jl     L162
  mov    %r14d,%eax
  movslq %ecx,%rcx
  mov    %r8,-0x48(%rbp)
  sub    %ebx,%eax
  movslq %ebx,%rbx
  lea    (%r8,%rcx,4),%rdi
  lea    0x4(,%rax,4),%rdx
  lea    0x0(%r13,%rbx,4),%rsi
  call   <memcpy@plt>
  mov    -0x48(%rbp),%r8
L162:
  cmp    %r14d,%r15d
  jg     L151
  movslq %r15d,%rax
  sub    %r15d,%r14d
  mov    %r8,%rsi
  lea    0x0(%r13,%rax,4),%rdi
  lea    0x4(,%r14,4),%rdx
  call   <memcpy@plt>
L151:
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L132
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
L163:
  xor    %ecx,%ecx
  xchg   %ax,%ax
L148:
  cmp    %r12d,%r9d
  jl     L91
  movslq %ecx,%rax
  mov    %ecx,-0x54(%rbp)
  lea    (%r8,%rax,4),%rdi
  mov    %r9d,%eax
  mov    %r8,-0x50(%rbp)
  sub    %r12d,%eax
  mov    %r9d,-0x48(%rbp)
  lea    0x4(,%rax,4),%rdx
  movslq %r12d,%rax
  lea    0x0(%r13,%rax,4),%rsi
  call   <memcpy@plt>
  mov    -0x48(%rbp),%r9d
  mov    -0x54(%rbp),%ecx
  mov    -0x50(%rbp),%r8
  lea    0x1(%rcx,%r9,1),%ecx
  sub    %r12d,%ecx
  jmp    L91
  nopw   0x0(%rax,%rax,1)
L56:
  orq    $0x0,-0x8(%rsp,%rdx,1)
  jmp    L119
L132:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void merge(int arr[], int l1, int r1, int l2, int r2) {
  int i, j, k = 0;
  i = l1;
  j = l2;
  int len1, len2;
  len1 = r1 - l1 + 1;
  len2 = r2 - l2 + 1;
  int b[len1 + len2];
  while (i <= r1 && j <= r2) {
    if (arr[i] < arr[j]) {
      b[k++] = arr[i++];
    } else {
      b[k++] = arr[j++];
    }
  }
  while (i <= r1) {
    b[k++] = arr[i++];
  }
  while (j <= r2) {
    b[k++] = arr[j++];
  }
  for (i = l1; i <= r2; i++) {
    arr[i] = b[i - l1];
  }
}
```