user: 请将以下的汇编代码转换成C语言代码:

```asm
<merge>:
  endbr64
  push   %r14
  mov    %ecx,%r14d
  push   %r13
  mov    %edx,%r13d
  push   %r12
  mov    %esi,%r12d
  push   %rbp
  mov    %ecx,%ebp
  push   %rbx
  sub    %esi,%ebp
  mov    %rdi,%rbx
  mov    $0x4,%esi
  lea    0x5(%rbp),%edi
  call   <calloc@plt>
  test   %ebp,%ebp
  js     L75
  mov    %rax,%rdi
  mov    %rax,%rsi
  mov    %r13d,%edx
  mov    %r12d,%ecx
  xor    %eax,%eax
L65:
  add    $0x1,%eax
  cmp    %ecx,%r13d
  jg     L39
  lea    0x1(%rdx),%ecx
  movslq %edx,%rdx
  mov    (%rbx,%rdx,4),%edx
  mov    %edx,(%rsi)
  cmp    %eax,%ebp
  jl     L158
  movslq %eax,%rdx
  movslq %ecx,%r8
  mov    %ebp,%r11d
  shl    $0x2,%rdx
  lea    0x4(,%r8,4),%r8
  sub    %eax,%r11d
  lea    (%rdx,%rdi,1),%rsi
  lea    (%rbx,%r8,1),%r10
  mov    %rsi,%r9
  sub    %r10,%r9
  cmp    $0x8,%r9
  jbe    L156
  cmp    $0x2,%r11d
  jbe    L156
  add    $0x1,%r11d
  lea    -0x4(%rbx,%r8,1),%r9
  xor    %edx,%edx
  mov    %r11d,%r10d
  shr    $0x2,%r10d
  jmp    1060 <merge.cold>
  nopl   0x0(%rax,%rax,1)
L39:
  movslq %ecx,%r8
  mov    (%rbx,%r8,4),%r8d
  cmp    %edx,%r14d
  jle    L100
  movslq %edx,%r9
  mov    (%rbx,%r9,4),%r9d
  cmp    %r8d,%r9d
  jg     L100
  mov    %r9d,%r8d
  add    $0x1,%edx
  mov    %r8d,(%rsi)
  cmp    %eax,%ebp
  jl     L158
L9:
  add    $0x4,%rsi
  jmp    L65
  xchg   %ax,%ax
L100:
  mov    %r8d,(%rsi)
  add    $0x1,%ecx
  cmp    %eax,%ebp
  jge    L9
L158:
  test   %ebp,%ebp
  jle    L75
  movslq %r12d,%rdx
  lea    0x4(%rdi),%r8
  mov    %rdi,%rax
  shl    $0x2,%rdx
  lea    (%rbx,%rdx,1),%rcx
  mov    %rcx,%rsi
  sub    %r8,%rsi
  cmp    $0x8,%rsi
  jbe    L54
  lea    -0x1(%rbp),%esi
  cmp    $0x2,%esi
  jbe    L54
  mov    %ebp,%edx
  sub    %rdi,%rcx
  shr    $0x2,%edx
  shl    $0x4,%rdx
  add    %rdi,%rdx
  nopl   0x0(%rax,%rax,1)
L135:
  movdqu (%rax),%xmm0
  movups %xmm0,(%rcx,%rax,1)
  add    $0x10,%rax
  cmp    %rax,%rdx
  jne    L135
  mov    %ebp,%eax
  and    $0xfffffffc,%eax
  test   $0x3,%bpl
  je     L75
  mov    %eax,%edx
  mov    (%rdi,%rdx,4),%esi
  lea    0x0(,%rdx,4),%rcx
  lea    (%r12,%rax,1),%edx
  movslq %edx,%rdx
  mov    %esi,(%rbx,%rdx,4)
  lea    0x1(%rax),%edx
  cmp    %edx,%ebp
  jle    L75
  mov    0x4(%rdi,%rcx,1),%esi
  add    %r12d,%edx
  add    $0x2,%eax
  movslq %edx,%rdx
  mov    %esi,(%rbx,%rdx,4)
  cmp    %eax,%ebp
  jle    L75
  mov    0x8(%rdi,%rcx,1),%edx
  add    %r12d,%eax
  cltq
  mov    %edx,(%rbx,%rax,4)
L75:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   0x0(%rax,%rax,1)
L54:
  mov    %ebp,%ebp
  sub    %rdi,%rdx
  lea    (%rdi,%rbp,4),%rsi
  add    %rbx,%rdx
  nopl   0x0(%rax)
L78:
  mov    (%rax),%ecx
  mov    %ecx,(%rdx,%rax,1)
  add    $0x4,%rax
  cmp    %rax,%rsi
  jne    L78
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
L156:
  neg    %rdx
  sub    %rdi,%rdx
  lea    -0x4(%r8,%rdx,1),%rdx
  add    %rbx,%rdx
  jmp    L23
```

assistant: ```c
void merge(int *a, int start, int mid, int end) {
  int *t = (int *)calloc(end - start + 5, sizeof(int)), i = start, j = mid, k = 0;
  while (k <= end - start) {
    if (i >= mid) {
      t[k++] = a[j++];
    } else if (j >= end) {
      t[k++] = a[i++];
    } else if (a[i] < a[j]) {
      t[k++] = a[i++];
    } else {
      t[k++] = a[j++];
    }
  }
  for (i = 0; i < end - start; i++) {
    a[start + i] = t[i];
  }
}
```