user: 请从给定的汇编指令推导出C源代码：

```asm
<Merge>:
  endbr64
  push   %r15
  mov    %edx,%r15d
  mov    %esi,%r10d
  push   %r14
  mov    %edi,%r14d
  push   %r13
  lea    0x1(%rsi),%r13d
  push   %r12
  mov    %r9,%r12
  push   %rbp
  mov    %edi,%ebp
  push   %rbx
  mov    $0x1,%ebx
  sub    $0x38,%rsp
  mov    %rcx,0x28(%rsp)
  sub    %edi,%r15d
  js     L9
L131:
  cmp    %r13d,%edx
  jge    L64
  lea    0x1(%rbp),%eax
  movslq %ebp,%rbp
  mov    (%r8,%rbp,4),%edx
  mov    %ebx,%ebp
  mov    %edx,-0x4(%r12,%rbx,4)
  cmp    %ebx,%r15d
  jl     L108
  mov    %r15d,%r11d
  movslq %eax,%rdx
  sub    %ebx,%r11d
  movslq %ebx,%rbx
  lea    0x4(,%rdx,4),%rdx
  lea    0x0(,%rbx,4),%rsi
  lea    (%r8,%rdx,1),%r10
  lea    (%r12,%rsi,1),%rdi
  mov    %rdi,%r9
  sub    %r10,%r9
  cmp    $0x8,%r9
  jbe    L63
  cmp    $0x2,%r11d
  jbe    L63
  cmp    %ebp,%r15d
  lea    0x1(%r11),%esi
  mov    $0x1,%r9d
  cmovl  %r9d,%esi
  lea    -0x4(%r8,%rdx,1),%r10
  xor    %edx,%edx
  mov    %esi,%r11d
  shr    $0x2,%r11d
  jmp    1040 <Merge.cold>
  nopl   0x0(%rax)
L64:
  movslq %r13d,%rax
  lea    (%r8,%rax,4),%r9
  mov    %r9,0x8(%rsp)
  mov    (%r9),%esi
  cmp    %ebp,%r10d
  jl     L117
  movslq %ebp,%rax
  mov    %edx,0x24(%rsp)
  lea    (%r8,%rax,4),%r11
  mov    %r10d,0x20(%rsp)
  mov    0x28(%rsp),%rax
  mov    %r8,0x18(%rsp)
  mov    (%r11),%edi
  mov    %r11,0x10(%rsp)
  call   *%rax
  mov    0x10(%rsp),%r11
  mov    0x18(%rsp),%r8
  test   %eax,%eax
  mov    0x20(%rsp),%r10d
  mov    0x24(%rsp),%edx
  jle    L76
  mov    0x8(%rsp),%r9
  mov    (%r9),%esi
L117:
  mov    %esi,-0x4(%r12,%rbx,4)
  add    $0x1,%r13d
  cmp    %ebx,%r15d
  jl     L108
L70:
  add    $0x1,%rbx
  jmp    L131
  xchg   %ax,%ax
L76:
  mov    (%r11),%eax
  add    $0x1,%ebp
  mov    %eax,-0x4(%r12,%rbx,4)
  cmp    %ebx,%r15d
  jge    L70
L108:
  movslq %r14d,%rax
  lea    0x4(%r12),%rdx
  lea    (%r8,%rax,4),%rsi
  mov    %rsi,%rax
  sub    %rdx,%rax
  cmp    $0x8,%rax
  jbe    L44
  cmp    $0x2,%r15d
  jbe    L44
  lea    0x1(%r15),%edi
  xor    %eax,%eax
  mov    %edi,%edx
  shr    $0x2,%edx
  shl    $0x4,%rdx
  nopl   (%rax)
L65:
  movdqu (%r12,%rax,1),%xmm0
  movups %xmm0,(%rsi,%rax,1)
  add    $0x10,%rax
  cmp    %rdx,%rax
  jne    L65
  mov    %edi,%eax
  and    $0xfffffffc,%eax
  and    $0x3,%edi
  je     L9
  movslq %eax,%rdx
  mov    (%r12,%rdx,4),%edi
  lea    0x0(,%rdx,4),%rsi
  lea    (%r14,%rax,1),%edx
  movslq %edx,%rdx
  mov    %edi,(%r8,%rdx,4)
  lea    0x1(%rax),%edx
  cmp    %r15d,%edx
  jg     L9
  mov    0x4(%r12,%rsi,1),%edi
  add    %r14d,%edx
  add    $0x2,%eax
  movslq %edx,%rdx
  mov    %edi,(%r8,%rdx,4)
  cmp    %eax,%r15d
  jl     L9
  mov    0x8(%r12,%rsi,1),%edx
  add    %r14d,%eax
  cltq
  mov    %edx,(%r8,%rax,4)
L9:
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax,%rax,1)
L44:
  movslq %r15d,%rcx
  xor    %eax,%eax
  lea    0x4(,%rcx,4),%rcx
  nopl   (%rax)
L92:
  mov    (%r12,%rax,1),%edx
  mov    %edx,(%rsi,%rax,1)
  add    $0x4,%rax
  cmp    %rcx,%rax
  jne    L92
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L63:
  mov    %r8,%rax
  sub    %rsi,%rax
  lea    -0x4(%rax,%rdx,1),%rax
  jmp    L155
```

assistant: ```c
void Merge(int p, int m, int q, int (*CFun)(int, int), int *order, int *t) {
  int k, i = p, j = m + 1;
  for (k = 0; k < q - p + 1; k++)
    if (j > q || i <= m && CFun(order[i], order[j]) <= 0)
      t[k] = order[i++];
    else
      t[k] = order[j++];
  for (k = 0; k < q - p + 1; k++)
    order[p + k] = t[k];
}
```