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    %edx,%r15d
  sub    %edx,%ecx
  push   %r14
  sub    %esi,%r15d
  push   %r13
  push   %r12
  mov    %ecx,%r12d
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  mov    %esi,%ebx
  lea    0x1(%r15),%esi
  lea    0x0(,%rsi,4),%edi
  sub    $0x18,%rsp
  mov    %esi,(%rsp)
  mov    %edx,0xc(%rsp)
  call   <malloc@plt>
  lea    0x0(,%r12,4),%edi
  mov    %rax,%r14
  call   <malloc@plt>
  mov    (%rsp),%esi
  movslq 0xc(%rsp),%r8
  mov    %rax,%r13
  test   %esi,%esi
  jle    L310
  movslq %ebx,%rdi
  mov    %r14,%rax
  lea    0x4(,%rdi,4),%rcx
  lea    0x0(%rbp,%rcx,1),%rdx
  sub    %rdx,%rax
  cmp    $0x8,%rax
  jbe    L15
  cmp    $0x2,%r15d
  jbe    L15
  mov    %esi,%edx
  mov    %rbp,%r9
  mov    %r14,%rax
  shr    $0x2,%edx
  sub    %r14,%r9
  shl    $0x4,%rdx
  lea    -0x4(%r9,%rcx,1),%rcx
  add    %r14,%rdx
L112:
  movdqu (%rax,%rcx,1),%xmm0
  add    $0x10,%rax
  movups %xmm0,-0x10(%rax)
  cmp    %rdx,%rax
  jne    L112
  mov    %esi,%eax
  and    $0xfffffffc,%eax
  test   $0x3,%sil
  je     L310
  movslq %eax,%rdx
  lea    (%rdx,%rdi,1),%r9
  lea    0x0(,%rdx,4),%rcx
  mov    0x0(%rbp,%r9,4),%r9d
  mov    %r9d,(%r14,%rdx,4)
  lea    0x1(%rax),%r9d
  cmp    %eax,%r15d
  jle    L310
  movslq %r9d,%rdx
  add    $0x2,%eax
  add    %rdi,%rdx
  mov    0x0(%rbp,%rdx,4),%edx
  mov    %edx,0x4(%r14,%rcx,1)
  cmp    %r9d,%r15d
  jle    L310
  cltq
  add    %rdi,%rax
  mov    0x0(%rbp,%rax,4),%eax
  mov    %eax,0x8(%r14,%rcx,1)
L310:
  xor    %edx,%edx
  xor    %ecx,%ecx
  test   %r12d,%r12d
  jle    L292
  lea    0x8(,%r8,4),%rdi
  mov    %r13,%rax
  lea    0x1(%r8),%rcx
  lea    0x0(%rbp,%rdi,1),%rdx
  sub    %rdx,%rax
  cmp    $0x8,%rax
  jbe    L104
  lea    -0x1(%r12),%eax
  cmp    $0x2,%eax
  jbe    L104
  mov    %r12d,%edx
  mov    %rbp,%r8
  mov    %r13,%rax
  shr    $0x2,%edx
  sub    %r13,%r8
  shl    $0x4,%rdx
  lea    -0x4(%r8,%rdi,1),%rdi
  add    %r13,%rdx
  nopw   0x0(%rax,%rax,1)
L79:
  movdqu (%rax,%rdi,1),%xmm1
  add    $0x10,%rax
  movups %xmm1,-0x10(%rax)
  cmp    %rdx,%rax
  jne    L79
  mov    %r12d,%eax
  and    $0xfffffffc,%eax
  test   $0x3,%r12b
  je     L227
  mov    %eax,%edx
  lea    (%rdx,%rcx,1),%r8
  lea    0x0(,%rdx,4),%rdi
  mov    0x0(%rbp,%r8,4),%r8d
  mov    %r8d,0x0(%r13,%rdx,4)
  lea    0x1(%rax),%edx
  cmp    %edx,%r12d
  jle    L227
  movslq %edx,%rdx
  add    $0x2,%eax
  add    %rcx,%rdx
  mov    0x0(%rbp,%rdx,4),%edx
  mov    %edx,0x4(%r13,%rdi,1)
  cmp    %r12d,%eax
  jge    L227
  cltq
  add    %rcx,%rax
  mov    0x0(%rbp,%rax,4),%eax
  mov    %eax,0x8(%r13,%rdi,1)
L227:
  test   %esi,%esi
  jle    L17
  add    $0x1,%ebx
  xor    %edx,%edx
  xor    %edi,%edi
  xor    %r10d,%r10d
  movslq %ebx,%rax
  xor    %r9d,%r9d
  nopl   0x0(%rax,%rax,1)
L64:
  mov    (%r14,%r10,4),%r8d
  mov    0x0(%r13,%r9,4),%ecx
  cmp    %r8d,%ecx
  jl     L190
L416:
  mov    %r8d,-0x4(%rbp,%rax,4)
  mov    %eax,%ebx
  lea    0x1(%rdi),%ecx
  add    $0x1,%rax
  cmp    %edx,%r12d
  jle    L292
  cmp    %edi,%r15d
  jle    L292
  movslq %ecx,%r10
  mov    0x0(%r13,%r9,4),%ecx
  mov    (%r14,%r10,4),%r8d
  mov    %r10,%rdi
  cmp    %r8d,%ecx
  jge    L416
L190:
  mov    %ecx,-0x4(%rbp,%rax,4)
  mov    %eax,%ebx
  add    $0x1,%edx
  add    $0x1,%rax
  cmp    %edi,%esi
  jle    L28
  cmp    %edx,%r12d
  jle    L28
  movslq %edx,%r9
  jmp    L64
  nopl   (%rax)
L28:
  mov    %edi,%ecx
L292:
  cmp    %ecx,%esi
  jle    L385
  movslq %ebx,%r8
  movslq %ecx,%r11
  mov    %r15d,%r9d
  lea    0x0(,%r8,4),%rax
  lea    0x0(,%r11,4),%r10
  sub    %ecx,%r9d
  lea    0x0(%rbp,%rax,1),%rdi
  mov    %rax,(%rsp)
  lea    (%r10,%r14,1),%rax
  lea    0x4(%rax),%rsi
  mov    %rdi,%r8
  sub    %rsi,%r8
  cmp    $0x8,%r8
  jbe    L311
  cmp    $0x2,%r9d
  jbe    L311
  lea    0x1(%r9),%r8d
  sub    %rax,%rdi
  mov    %r8d,%esi
  shr    $0x2,%esi
  sub    $0x1,%esi
  shl    $0x4,%rsi
  lea    0x10(%rax,%rsi,1),%rsi
  nopw   0x0(%rax,%rax,1)
L280:
  movdqu (%rax),%xmm2
  movups %xmm2,(%rdi,%rax,1)
  add    $0x10,%rax
  cmp    %rsi,%rax
  jne    L280
  mov    %r8d,%esi
  and    $0xfffffffc,%esi
  add    %esi,%ecx
  lea    (%rbx,%rsi,1),%eax
  cmp    %esi,%r8d
  je     L164
  movslq %ecx,%rsi
  mov    (%r14,%rsi,4),%edi
  movslq %eax,%rsi
  add    $0x1,%eax
  mov    %edi,0x0(%rbp,%rsi,4)
  lea    0x1(%rcx),%esi
  cmp    %ecx,%r15d
  jle    L164
  movslq %esi,%rcx
  cltq
  lea    0x0(,%rcx,4),%r8
  mov    (%r14,%rcx,4),%ecx
  lea    0x0(,%rax,4),%rdi
  mov    %ecx,0x0(%rbp,%rax,4)
  cmp    %esi,%r15d
  jle    L164
  mov    0x4(%r14,%r8,1),%eax
  mov    %eax,0x4(%rbp,%rdi,1)
L164:
  lea    0x1(%r9,%rbx,1),%ebx
L385:
  cmp    %edx,%r12d
  jle    L301
L197:
  movslq %ebx,%rdi
  movslq %edx,%r10
  mov    %r12d,%r8d
  shl    $0x2,%rdi
  lea    0x0(,%r10,4),%r9
  sub    %edx,%r8d
  lea    0x0(%rbp,%rdi,1),%rsi
  lea    0x0(%r13,%r9,1),%rax
  lea    0x4(%rax),%rcx
  mov    %rsi,%r11
  sub    %rcx,%r11
  cmp    $0x8,%r11
  jbe    L369
  lea    -0x1(%r8),%r11d
  cmp    $0x2,%r11d
  jbe    L369
  mov    %r8d,%ecx
  sub    %rax,%rsi
  shr    $0x2,%ecx
  sub    $0x1,%ecx
  shl    $0x4,%rcx
  lea    0x10(%rax,%rcx,1),%rdi
  mov    %rsi,%rcx
  nopw   0x0(%rax,%rax,1)
L465:
  movdqu (%rax),%xmm3
  movups %xmm3,(%rcx,%rax,1)
  add    $0x10,%rax
  cmp    %rax,%rdi
  jne    L465
  mov    %r8d,%eax
  and    $0xfffffffc,%eax
  add    %eax,%edx
  add    %eax,%ebx
  cmp    %r8d,%eax
  je     L301
  movslq %edx,%rax
  mov    0x0(%r13,%rax,4),%ecx
  movslq %ebx,%rax
  add    $0x1,%ebx
  mov    %ecx,0x0(%rbp,%rax,4)
  lea    0x1(%rdx),%eax
  cmp    %r12d,%eax
  jge    L301
  cltq
  movslq %ebx,%rbx
  add    $0x2,%edx
  lea    0x0(,%rax,4),%rsi
  mov    0x0(%r13,%rax,4),%eax
  lea    0x0(,%rbx,4),%rcx
  mov    %eax,0x0(%rbp,%rbx,4)
  cmp    %r12d,%edx
  jge    L301
  mov    0x4(%r13,%rsi,1),%eax
  mov    %eax,0x4(%rbp,%rcx,1)
L301:
  mov    %r14,%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>
  nopw   0x0(%rax,%rax,1)
L104:
  mov    %r12d,%edx
  mov    %r13,%rax
  lea    0x0(%r13,%rdx,4),%r8
  mov    %rbp,%rdx
  sub    %r13,%rdx
  lea    -0x8(%rdx,%rdi,1),%rcx
  cs nopw 0x0(%rax,%rax,1)
L204:
  mov    0x4(%rcx,%rax,1),%edx
  add    $0x4,%rax
  mov    %edx,-0x4(%rax)
  cmp    %r8,%rax
  jne    L204
  jmp    L227
  nopl   (%rax)
L311:
  mov    (%rsp),%r8
  mov    %r9d,%ecx
  add    %r11,%rcx
  sub    %r10,%r8
  lea    0x4(%r14,%rcx,4),%rdi
  sub    %r14,%r8
  lea    0x0(%rbp,%r8,1),%rcx
  jmp    L408
  nopl   0x0(%rax)
L381:
  add    $0x4,%rsi
L408:
  mov    (%rax),%r8d
  mov    %r8d,(%rcx,%rax,1)
  mov    %rsi,%rax
  cmp    %rdi,%rsi
  jne    L381
  jmp    L164
L369:
  sub    $0x1,%r12d
  sub    %r9,%rdi
  sub    %edx,%r12d
  sub    %r13,%rdi
  lea    (%r12,%r10,1),%rdx
  add    %rdi,%rbp
  lea    0x4(%r13,%rdx,4),%rsi
  jmp    L407
  nopl   0x0(%rax,%rax,1)
L459:
  add    $0x4,%rcx
L407:
  mov    (%rax),%edx
  mov    %edx,0x0(%rbp,%rax,1)
  mov    %rcx,%rax
  cmp    %rcx,%rsi
  jne    L459
  jmp    L301
  nopw   0x0(%rax,%rax,1)
L15:
  mov    %r15d,%edx
  mov    %r14,%rax
  lea    0x4(%r14,%rdx,4),%rdi
  mov    %rbp,%rdx
  sub    %r14,%rdx
  lea    -0x4(%rdx,%rcx,1),%rcx
  cs nopw 0x0(%rax,%rax,1)
L136:
  mov    (%rcx,%rax,1),%edx
  add    $0x4,%rax
  mov    %edx,-0x4(%rax)
  cmp    %rdi,%rax
  jne    L136
  jmp    L310
L17:
  xor    %edx,%edx
  jmp    L197
```

assistant: ```c
void merge(int *a, int l, int m, int r) {
  int i, j, k;
  int len1 = m - l + 1;
  int len2 = r - m;
  int *a1;
  a1 = (int *)malloc(len1 * sizeof(int));
  int *a2;
  a2 = (int *)malloc(len2 * sizeof(int));
  for (i = 0; i < len1; i++) {
    *(a1 + i) = *(a + l + i);
  }
  for (i = 0; i < len2; i++) {
    *(a2 + i) = *(a + m + 1 + i);
  }
  i = 0;
  j = 0;
  k = l;
  while (i < len1 && j < len2) {
    if (*(a1 + i) <= *(a2 + j)) {
      *(a + k) = *(a1 + i);
      i++;
    } else {
      *(a + k) = *(a2 + j);
      j++;
    }
    k++;
  }
  while (i < len1) {
    *(a + k) = *(a1 + i);
    i++;
    k++;
  }
  while (j < len2) {
    *(a + k) = *(a2 + j);
    j++;
    k++;
  }
  free(a1);
  free(a2);
}
```