user: Demonstrate the C code that generates the assembly output below:

```asm
<ss_inplacemerge>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  mov    %rdi,%r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %rsi,(%rsp)
  mov    %rdx,0x28(%rsp)
  mov    %rcx,0x18(%rsp)
  mov    %r8,0x10(%rsp)
  mov    %r9d,0xc(%rsp)
  nopl   (%rax)
L23:
  mov    0x10(%rsp),%rax
  movslq -0x4(%rax),%rax
  test   %eax,%eax
  js     L78
  mov    (%rsp),%rdx
  movl   $0x0,0x24(%rsp)
  lea    (%rdx,%rax,4),%r14
L42:
  mov    0x18(%rsp),%rax
  mov    0x28(%rsp),%rbx
  sub    %rbx,%rax
  sar    $0x2,%rax
  mov    %eax,%ebp
  mov    %eax,%r12d
  sar    %ebp
  test   %eax,%eax
  jle    L14
  movl   $0xffffffff,0x20(%rsp)
  mov    %ebp,%r15d
  jmp    L116
  xchg   %ax,%ax
L86:
  mov    %r15d,%r12d
  mov    %eax,0x20(%rsp)
  mov    %r12d,%r15d
  sar    %r15d
  test   %r12d,%r12d
  jle    L101
L116:
  movslq %r15d,%rax
  lea    (%rbx,%rax,4),%rbp
  movslq 0x0(%rbp),%rsi
  test   %esi,%esi
  jns    L150
  not    %esi
  movslq %esi,%rsi
L150:
  mov    (%rsp),%rdi
  mov    0xc(%rsp),%ecx
  mov    %r14,%rdx
  lea    (%rdi,%rsi,4),%rsi
  mov    %r13,%rdi
  call   <ss_compare@plt>
  test   %eax,%eax
  jns    L86
  mov    %r12d,%eax
  lea    0x4(%rbp),%rbx
  not    %eax
  and    $0x1,%eax
  sub    %eax,%r15d
  mov    %r15d,%r12d
  mov    %r12d,%r15d
  sar    %r15d
  test   %r12d,%r12d
  jg     L116
L101:
  cmp    %rbx,0x18(%rsp)
  jbe    L137
  mov    0x20(%rsp),%esi
  test   %esi,%esi
  jne    L133
  notl   (%rbx)
L133:
  mov    0x10(%rsp),%r15
  mov    0x18(%rsp),%r14
  mov    %rbx,%rdi
  mov    %r15,%rdx
  mov    %r14,%rsi
  call   <ss_rotate@plt>
  mov    %r14,%rax
  sub    %rbx,%rax
  sub    %rax,%r15
  mov    %r15,0x10(%rsp)
  cmp    0x28(%rsp),%rbx
  je     L113
  mov    %rbx,0x18(%rsp)
L137:
  mov    0x24(%rsp),%ecx
  subq   $0x4,0x10(%rsp)
  test   %ecx,%ecx
  jne    L27
L12:
  mov    0x10(%rsp),%rcx
  cmp    %rcx,0x18(%rsp)
  jne    L23
L113:
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  xchg   %ax,%ax
L78:
  mov    (%rsp),%rdi
  not    %eax
  movl   $0x1,0x24(%rsp)
  cltq
  lea    (%rdi,%rax,4),%r14
  jmp    L42
  nopl   0x0(%rax)
L27:
  mov    0x10(%rsp),%rax
  nopl   (%rax)
L29:
  mov    -0x4(%rax),%edx
  sub    $0x4,%rax
  test   %edx,%edx
  js     L29
  mov    %rax,0x10(%rsp)
  jmp    L12
  nopw   0x0(%rax,%rax,1)
L14:
  mov    0x28(%rsp),%rdi
  cmp    %rdi,0x18(%rsp)
  jbe    L137
  mov    0x10(%rsp),%rdx
  mov    0x18(%rsp),%rsi
  mov    0x28(%rsp),%rdi
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1060 <ss_rotate@plt>
```

assistant: ```c
void ss_inplacemerge(const unsigned char *T, const int *PA, int *first, int *middle, int *last, int depth) {
  const int *p;
  int *a, *b;
  int len, half;
  int q, r;
  int x;
  for (;;) {
    if (*(last - 1) < 0) {
      x = 1;
      p = PA + ~*(last - 1);
    } else {
      x = 0;
      p = PA + *(last - 1);
    }
    for (a = first, len = middle - first, half = len >> 1, r = -1; 0 < len; len = half, half >>= 1) {
      b = a + half;
      q = ss_compare(T, PA + ((0 <= *b) ? *b : ~*b), p, depth);
      if (q < 0) {
        a = b + 1;
        half -= (len & 1) ^ 1;
      } else {
        r = q;
      }
    }
    if (a < middle) {
      if (r == 0) {
        *a = ~*a;
      }
      ss_rotate(a, middle, last);
      last -= middle - a;
      middle = a;
      if (first == middle) {
        break;
      }
    }
    --last;
    if (x != 0) {
      while (*--last < 0) {
      }
    }
    if (middle == last) {
      break;
    }
  }
}
```