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

```asm
<constant_shift>:
  endbr64
  push   %rbx
  mov    %rdi,%rbx
  cmp    $0x47,%esi
  ja     L512
  mov    %esi,%esi
  lea    D5(%rip),%rax
  movslq (%rax,%rsi,4),%rdx
  add    %rax,%rdx
  notrack jmp *%rdx
  mov    $0x0,%eax
L337:
  pop    %rbx
  ret
  lea    (%rdi,%rdi,1),%rax
  jmp    L337
  lea    0x0(,%rdi,4),%rax
  jmp    L337
  lea    0x0(,%rdi,8),%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x4,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x5,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x6,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x7,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x8,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x9,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0xa,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0xb,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0xc,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0xd,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0xe,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0xf,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x10,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x11,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x12,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x13,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x14,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x15,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x16,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x17,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x18,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x19,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x1a,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x1b,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x1c,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x1d,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x1e,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x1f,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x20,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x21,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x22,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x23,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x24,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x25,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x26,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x27,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x28,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x29,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x2a,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x2b,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x2c,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x2d,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x2e,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x2f,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x30,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x31,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x32,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x33,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x34,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x35,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x36,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x37,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x38,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x39,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x3a,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x3b,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x3c,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x3d,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x3e,%rax
  jmp    L337
  mov    %rdi,%rax
  shl    $0x3f,%rax
  jmp    L337
L512:
  mov    $0x0,%eax
  call   <abort@plt>
  mov    %rbx,%rax
  jmp    L337
  mov    %rdi,%rax
  jmp    L337
```

assistant: ```c
unsigned long long constant_shift(unsigned long long x, int i) {
  switch (i) {
  case 0:
    x = x << 0;
    break;
  case 1:
    x = x << 1;
    break;
  case 2:
    x = x << 2;
    break;
  case 3:
    x = x << 3;
    break;
  case 4:
    x = x << 4;
    break;
  case 5:
    x = x << 5;
    break;
  case 6:
    x = x << 6;
    break;
  case 7:
    x = x << 7;
    break;
  case 8:
    x = x << 8;
    break;
  case 9:
    x = x << 9;
    break;
  case 10:
    x = x << 10;
    break;
  case 11:
    x = x << 11;
    break;
  case 12:
    x = x << 12;
    break;
  case 13:
    x = x << 13;
    break;
  case 14:
    x = x << 14;
    break;
  case 15:
    x = x << 15;
    break;
  case 16:
    x = x << 16;
    break;
  case 17:
    x = x << 17;
    break;
  case 18:
    x = x << 18;
    break;
  case 19:
    x = x << 19;
    break;
  case 20:
    x = x << 20;
    break;
  case 21:
    x = x << 21;
    break;
  case 22:
    x = x << 22;
    break;
  case 23:
    x = x << 23;
    break;
  case 24:
    x = x << 24;
    break;
  case 25:
    x = x << 25;
    break;
  case 26:
    x = x << 26;
    break;
  case 27:
    x = x << 27;
    break;
  case 28:
    x = x << 28;
    break;
  case 29:
    x = x << 29;
    break;
  case 30:
    x = x << 30;
    break;
  case 31:
    x = x << 31;
    break;
  case 32:
    x = x << 32;
    break;
  case 33:
    x = x << 33;
    break;
  case 34:
    x = x << 34;
    break;
  case 35:
    x = x << 35;
    break;
  case 36:
    x = x << 36;
    break;
  case 37:
    x = x << 37;
    break;
  case 38:
    x = x << 38;
    break;
  case 39:
    x = x << 39;
    break;
  case 40:
    x = x << 40;
    break;
  case 41:
    x = x << 41;
    break;
  case 42:
    x = x << 42;
    break;
  case 43:
    x = x << 43;
    break;
  case 44:
    x = x << 44;
    break;
  case 45:
    x = x << 45;
    break;
  case 46:
    x = x << 46;
    break;
  case 47:
    x = x << 47;
    break;
  case 48:
    x = x << 48;
    break;
  case 49:
    x = x << 49;
    break;
  case 50:
    x = x << 50;
    break;
  case 51:
    x = x << 51;
    break;
  case 52:
    x = x << 52;
    break;
  case 53:
    x = x << 53;
    break;
  case 54:
    x = x << 54;
    break;
  case 55:
    x = x << 55;
    break;
  case 56:
    x = x << 56;
    break;
  case 57:
    x = x << 57;
    break;
  case 58:
    x = x << 58;
    break;
  case 59:
    x = x << 59;
    break;
  case 60:
    x = x << 60;
    break;
  case 61:
    x = x << 61;
    break;
  case 62:
    x = x << 62;
    break;
  case 63:
    x = x << 63;
    break;
  case 64:
    x = x << 64;
    break;
  case 65:
    x = x << 65;
    break;
  case 66:
    x = x << 66;
    break;
  case 67:
    x = x << 67;
    break;
  case 68:
    x = x << 68;
    break;
  case 69:
    x = x << 69;
    break;
  case 70:
    x = x << 70;
    break;
  case 71:
    x = x << 71;
    break;
  default:
    abort();
  }
  return x;
}
```