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

```asm
<d_name>:
  endbr64
  movslq %edi,%rax
  mov    %rax,%rcx
  lea    0x0(,%rax,8),%r8
  mov    %ecx,%edx
  sub    %rax,%r8
  lea    D5(%rip),%rax
  sar    $0x1f,%edx
  add    %rax,%r8
  shr    $0x1d,%edx
  movb   $0x0,0x6(%r8)
  lea    (%rcx,%rdx,1),%eax
  and    $0x7,%eax
  sub    %edx,%eax
  test   %ecx,%ecx
  lea    0x7(%rcx),%edx
  cmovns %ecx,%edx
  lea    0x41(%rax),%r9d
  mov    %r9b,0x2(%r8)
  sar    $0x3,%edx
  cmp    $0xf,%ecx
  lea    0x31(%rdx),%edi
  setg   %sil
  mov    %dil,0x3(%r8)
  cmp    $0x1,%eax
  jg     L710
  test   %sil,%sil
  je     L710
  cmp    $0x2f,%ecx
  jle    L593
L305:
  movb   $0x0,(%r8)
  mov    %r8,%rax
  ret
L710:
  cmp    $0x5,%eax
  jle    L306
  test   %sil,%sil
  je     L306
  cmp    $0x2f,%ecx
  jg     L305
  lea    -0x1(%rax),%ecx
  lea    -0x1(%rdx),%edi
  mov    %ecx,%esi
  cmp    $0x1,%edi
  jle    L150
  lea    -0x2(%rdx),%edi
  lea    -0x2(%rax),%esi
  cmp    $0x1,%edi
  jle    L150
  lea    -0x3(%rdx),%edi
  lea    -0x3(%rax),%esi
  cmp    $0x1,%edi
  jle    L150
  lea    -0x4(%rdx),%edi
  lea    -0x4(%rax),%esi
  cmp    $0x1,%edi
  jle    L150
  lea    -0x5(%rdx),%edi
  lea    -0x5(%rax),%esi
  cmp    $0x1,%edi
  jle    L929
  cmp    $0x1,%esi
  jle    L929
  lea    -0x6(%rdx),%edi
  mov    $0x1,%esi
L929:
  add    $0x41,%esi
  add    $0x31,%edi
  mov    %sil,(%r8)
  lea    0x1(%rdx),%esi
  mov    %dil,0x1(%r8)
  cmp    $0x5,%esi
  jg     L805
  lea    0x2(%rdx),%esi
  lea    -0x2(%rax),%ecx
  cmp    $0x5,%esi
  jg     L805
  lea    0x3(%rdx),%esi
  lea    -0x3(%rax),%ecx
  cmp    $0x5,%esi
  jg     L805
  lea    0x4(%rdx),%esi
  lea    -0x4(%rax),%ecx
  cmp    $0x5,%esi
  jg     L805
  lea    0x5(%rdx),%esi
  lea    -0x5(%rax),%ecx
  cmp    $0x5,%esi
  jg     L255
  cmp    $0x1,%ecx
  jle    L255
  lea    0x6(%rdx),%esi
  mov    $0x1,%ecx
  jmp    L255
  nopl   0x0(%rax,%rax,1)
L593:
  lea    0x1(%rax),%ecx
  lea    -0x1(%rdx),%edi
  mov    %ecx,%esi
  cmp    $0x1,%edi
  jle    L140
  lea    -0x2(%rdx),%edi
  lea    0x2(%rax),%esi
  cmp    $0x1,%edi
  jle    L140
  lea    -0x3(%rdx),%edi
  lea    0x3(%rax),%esi
  cmp    $0x1,%edi
  jle    L140
  lea    -0x4(%rdx),%edi
  lea    0x4(%rax),%esi
  cmp    $0x1,%edi
  jle    L140
  lea    0x5(%rax),%esi
  lea    -0x5(%rdx),%edi
  cmp    $0x5,%esi
  jg     L684
  cmp    $0x1,%edi
  jle    L684
  lea    0x6(%rax),%esi
  lea    -0x6(%rdx),%edi
  cmp    $0x5,%esi
  jg     L684
  cmp    $0x1,%edi
  jle    L684
  lea    -0x7(%rdx),%edi
  lea    0x7(%rax),%esi
  cmp    $0x1,%edi
  jle    L684
  cmp    $0x5,%esi
  jg     L684
  lea    0x8(%rax),%esi
  lea    -0x8(%rdx),%edi
  cmp    $0x5,%esi
  jg     L684
  cmp    $0x1,%edi
  jle    L684
  lea    0x9(%rax),%esi
  lea    -0x9(%rdx),%edi
  cmp    $0x5,%esi
  jg     L684
  cmp    $0x1,%edi
  jle    L684
  lea    0xa(%rax),%esi
  lea    -0xa(%rdx),%edi
  cmp    $0x5,%esi
  jg     L684
  cmp    $0x1,%edi
  jle    L684
  lea    0xb(%rax),%esi
  lea    -0xb(%rdx),%edi
  cmp    $0x5,%esi
  jg     L684
  cmp    $0x1,%edi
  jle    L684
  lea    -0xc(%rdx),%edi
  lea    0xc(%rax),%esi
  cmp    $0x1,%edi
  jle    L684
  cmp    $0x5,%esi
  jg     L684
  lea    -0xd(%rdx),%edi
  mov    $0x6,%esi
L684:
  add    $0x41,%esi
  add    $0x31,%edi
  mov    %sil,(%r8)
  lea    0x1(%rdx),%esi
  mov    %dil,0x1(%r8)
  cmp    $0x5,%esi
  jg     L805
  lea    0x2(%rdx),%esi
  lea    0x2(%rax),%ecx
  cmp    $0x5,%esi
  jg     L805
  lea    0x3(%rdx),%esi
  lea    0x3(%rax),%ecx
  cmp    $0x5,%esi
  jg     L805
  lea    0x4(%rdx),%esi
  lea    0x4(%rax),%ecx
  cmp    $0x5,%esi
  jg     L805
  lea    0x5(%rax),%ecx
  lea    0x5(%rdx),%esi
  cmp    $0x5,%ecx
  jg     L255
  cmp    $0x5,%esi
  jg     L255
  lea    0x6(%rax),%ecx
  lea    0x6(%rdx),%esi
  cmp    $0x5,%ecx
  jg     L255
  cmp    $0x5,%esi
  jg     L255
  lea    0x7(%rax),%ecx
  lea    0x7(%rdx),%esi
  cmp    $0x5,%ecx
  jg     L255
  cmp    $0x5,%esi
  jg     L255
  lea    0x8(%rax),%ecx
  lea    0x8(%rdx),%esi
  cmp    $0x5,%ecx
  jg     L255
  cmp    $0x5,%esi
  jg     L255
  lea    0x9(%rax),%ecx
  lea    0x9(%rdx),%esi
  cmp    $0x5,%ecx
  jg     L255
  cmp    $0x5,%esi
  jg     L255
  lea    0xa(%rax),%ecx
  lea    0xa(%rdx),%esi
  cmp    $0x5,%ecx
  jg     L255
  cmp    $0x5,%esi
  jg     L255
  lea    0xb(%rax),%ecx
  lea    0xb(%rdx),%esi
  cmp    $0x5,%ecx
  jg     L255
  cmp    $0x5,%esi
  jg     L255
  lea    0xc(%rax),%ecx
  lea    0xc(%rdx),%esi
  cmp    $0x5,%ecx
  jg     L255
  cmp    $0x5,%esi
  jg     L255
  lea    0xd(%rdx),%esi
  mov    $0x6,%ecx
L255:
  add    $0x41,%ecx
  add    $0x31,%esi
  mov    %r8,%rax
  mov    %cl,0x4(%r8)
  mov    %sil,0x5(%r8)
  ret
  cs nopw 0x0(%rax,%rax,1)
L306:
  cmp    $0x1,%eax
  setg   %sil
  cmp    $0xf,%ecx
  jg     L543
  test   %sil,%sil
  je     L543
  cmp    $0x5,%eax
  jg     L305
  lea    0x1(%rdx),%ecx
  lea    -0x1(%rax),%esi
  cmp    $0x5,%ecx
  setle  %r10b
  cmp    $0x1,%esi
  jle    L253
  test   %r10b,%r10b
  je     L253
  lea    0x2(%rdx),%r9d
  lea    -0x2(%rax),%esi
  cmp    $0x5,%r9d
  jg     L747
  cmp    $0x1,%esi
  jle    L747
  lea    0x3(%rdx),%r9d
  lea    -0x3(%rax),%esi
  cmp    $0x5,%r9d
  jg     L747
  cmp    $0x1,%esi
  jle    L747
  lea    0x4(%rdx),%r9d
  mov    $0x1,%esi
L747:
  lea    0x41(%rsi),%edi
  lea    0x1(%rax),%esi
  add    $0x31,%r9d
  cmp    $0x5,%esi
  jg     L483
  test   %r10b,%r10b
  je     L483
  lea    0x2(%rdx),%ecx
  lea    0x2(%rax),%esi
  cmp    $0x5,%ecx
  jg     L483
  cmp    $0x5,%esi
  jg     L483
  lea    0x3(%rdx),%ecx
  lea    0x3(%rax),%esi
  cmp    $0x5,%ecx
  jg     L483
  cmp    $0x5,%esi
  jg     L483
  lea    0x4(%rdx),%ecx
  mov    $0x6,%esi
L483:
  add    $0x41,%esi
  add    $0x31,%ecx
  mov    %dil,(%r8)
  mov    %r8,%rax
  mov    %r9b,0x1(%r8)
  mov    %sil,0x4(%r8)
  mov    %cl,0x5(%r8)
  ret
  nopl   0x0(%rax,%rax,1)
L140:
  mov    $0x1,%edi
  jmp    L684
  nopw   0x0(%rax,%rax,1)
L805:
  mov    $0x6,%esi
  jmp    L255
L543:
  cmp    $0x5,%eax
  setle  %r11b
  cmp    $0x2f,%ecx
  setg   %r10b
  test   %r10b,%r11b
  je     L305
  test   %sil,%sil
  je     L305
  cmp    $0xf,%ecx
  jle    L355
  lea    -0x1(%rdx),%ecx
  lea    -0x1(%rax),%esi
  mov    %ecx,%edi
  cmp    $0x1,%ecx
  jle    L287
  cmp    $0x1,%esi
  jle    L287
  lea    -0x2(%rdx),%edi
  lea    -0x2(%rax),%esi
  cmp    $0x1,%edi
  jle    L287
  cmp    $0x1,%esi
  jle    L287
  lea    -0x3(%rdx),%edi
  lea    -0x3(%rax),%esi
  cmp    $0x1,%edi
  jle    L287
  cmp    $0x1,%esi
  jle    L287
  lea    -0x4(%rdx),%edi
  mov    $0x1,%esi
L287:
  add    $0x41,%esi
  add    $0x31,%edi
  mov    %sil,(%r8)
  mov    %dil,0x1(%r8)
L569:
  lea    0x1(%rax),%esi
  cmp    $0x1,%ecx
  jle    L333
  cmp    $0x5,%esi
  jg     L333
  lea    -0x2(%rdx),%ecx
  lea    0x2(%rax),%esi
  cmp    $0x1,%ecx
  jle    L333
  cmp    $0x5,%esi
  jg     L333
  lea    -0x3(%rdx),%ecx
  lea    0x3(%rax),%esi
  cmp    $0x1,%ecx
  jle    L333
  cmp    $0x5,%esi
  jg     L333
  lea    -0x4(%rdx),%ecx
  mov    $0x6,%esi
L333:
  add    $0x41,%esi
  add    $0x31,%ecx
  mov    %r8,%rax
  mov    %sil,0x4(%r8)
  mov    %cl,0x5(%r8)
  ret
  nopl   0x0(%rax)
L150:
  mov    $0x1,%edi
  jmp    L929
L253:
  mov    %ecx,%r9d
  jmp    L747
L355:
  mov    %r9b,(%r8)
  lea    -0x1(%rdx),%ecx
  mov    %dil,0x1(%r8)
  jmp    L569
```

assistant: ```c
char *d_name(const int x) {
  static char a[64][7];
  char *s = a[x];
  int f, r, h, v;
  f = x % 8;
  r = x / 8;
  s[2] = 'A' + f;
  s[3] = '1' + r;
  s[6] = '\0';
  if (f < 2 && r > 1 && r < 6) {
    for (h = r, v = f; h > 1 && v < 6; --h, ++v)
      ;
    s[0] = 'A' + v;
    s[1] = '1' + h;
    for (h = r, v = f; h < 6 && v < 6; ++h, ++v)
      ;
    s[4] = 'A' + v;
    s[5] = '1' + h;
  } else if (f > 5 && r > 1 && r < 6) {
    for (h = r, v = f; h > 1 && v > 1; --h, --v)
      ;
    s[0] = 'A' + v;
    s[1] = '1' + h;
    for (h = r, v = f; h < 6 && v > 1; ++h, --v)
      ;
    s[4] = 'A' + v;
    s[5] = '1' + h;
  } else if (r < 2 && f > 1 && f < 6) {
    for (h = r, v = f; h < 6 && v > 1; ++h, --v)
      ;
    s[0] = 'A' + v;
    s[1] = '1' + h;
    for (h = r, v = f; h < 6 && v < 6; ++h, ++v)
      ;
    s[4] = 'A' + v;
    s[5] = '1' + h;
  } else if (r > 5 && f > 1 && f < 6) {
    for (h = r, v = f; h > 1 && v > 1; --h, --v)
      ;
    s[0] = 'A' + v;
    s[1] = '1' + h;
    for (h = r, v = f; h > 1 && v < 6; --h, ++v)
      ;
    s[4] = 'A' + v;
    s[5] = '1' + h;
  } else {
    s[0] = '\0';
  }
  return s;
}
```