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

```asm
<computeBWT>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %rdx,-0x38(%rbp)
  mov    %rcx,-0x40(%rbp)
  mov    %r8d,-0x44(%rbp)
  mov    %r9d,-0x48(%rbp)
  movl   $0xffffffff,-0x18(%rbp)
  mov    -0x38(%rbp),%rax
  cmp    -0x40(%rbp),%rax
  jne    L300
  mov    -0x48(%rbp),%ecx
  mov    -0x44(%rbp),%edx
  mov    -0x38(%rbp),%rsi
  mov    -0x28(%rbp),%rax
  mov    0x10(%rbp),%r8d
  mov    %rax,%rdi
  call   <getCounts@plt>
L300:
  mov    -0x48(%rbp),%edx
  mov    -0x40(%rbp),%rsi
  mov    -0x38(%rbp),%rax
  mov    $0x0,%ecx
  mov    %rax,%rdi
  call   <getBuckets@plt>
  mov    -0x44(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x10(%rbp)
  cmpl   $0x4,0x10(%rbp)
  jne    L450
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  jmp    L350
L450:
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L350:
  mov    %eax,-0x14(%rbp)
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  cmpl   $0x0,-0x10(%rbp)
  jle    L269
  cmpl   $0x4,0x10(%rbp)
  jne    L33
  mov    -0x10(%rbp),%eax
  cltq
  shl    $0x2,%rax
  lea    -0x4(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  jmp    L267
L33:
  mov    -0x10(%rbp),%eax
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L267:
  cmp    -0x14(%rbp),%eax
  jge    L269
  mov    -0x10(%rbp),%eax
  not    %eax
  mov    %eax,%edx
  jmp    L411
L269:
  mov    -0x10(%rbp),%edx
L411:
  mov    -0x8(%rbp),%rax
  lea    0x4(%rax),%rcx
  mov    %rcx,-0x8(%rbp)
  mov    %edx,(%rax)
  movl   $0x0,-0x1c(%rbp)
  jmp    L265
L363:
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,-0x10(%rbp)
  cmpl   $0x0,-0x10(%rbp)
  jle    L362
  subl   $0x1,-0x10(%rbp)
  cmpl   $0x4,0x10(%rbp)
  jne    L373
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  jmp    L283
L373:
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
L283:
  cmpl   $0x4,0x10(%rbp)
  jne    L20
  mov    -0x10(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rcx
  mov    -0x28(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%eax
  jmp    L331
L20:
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x1(%rax),%rcx
  mov    -0x28(%rbp),%rax
  add    %rcx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L331:
  cmp    %eax,%edx
  setge  %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  cmpl   $0x4,0x10(%rbp)
  jne    L78
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  jmp    L103
L78:
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L103:
  mov    %eax,-0xc(%rbp)
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0xc(%rbp),%edx
  not    %edx
  mov    %edx,(%rax)
  mov    -0xc(%rbp),%eax
  cmp    -0x14(%rbp),%eax
  je     L119
  mov    -0x8(%rbp),%rax
  sub    -0x30(%rbp),%rax
  sar    $0x2,%rax
  mov    %rax,%rdx
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  mov    %edx,(%rax)
  mov    -0xc(%rbp),%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
L119:
  mov    -0x1c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x8(%rbp),%rax
  sub    -0x30(%rbp),%rax
  sar    $0x2,%rax
  cmp    %rax,%rdx
  setl   %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  cmpl   $0x0,-0x10(%rbp)
  jle    L321
  cmpl   $0x4,0x10(%rbp)
  jne    L322
  mov    -0x10(%rbp),%eax
  cltq
  shl    $0x2,%rax
  lea    -0x4(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  jmp    L34
L322:
  mov    -0x10(%rbp),%eax
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L34:
  cmp    -0x14(%rbp),%eax
  jge    L321
  mov    -0x10(%rbp),%eax
  not    %eax
  mov    %eax,%edx
  jmp    L416
L321:
  mov    -0x10(%rbp),%edx
L416:
  mov    -0x8(%rbp),%rax
  lea    0x4(%rax),%rcx
  mov    %rcx,-0x8(%rbp)
  mov    %edx,(%rax)
  jmp    L361
L362:
  cmpl   $0x0,-0x10(%rbp)
  je     L361
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x10(%rbp),%edx
  not    %edx
  mov    %edx,(%rax)
L361:
  addl   $0x1,-0x1c(%rbp)
L265:
  mov    -0x1c(%rbp),%eax
  cmp    -0x44(%rbp),%eax
  jl     L363
  mov    -0x38(%rbp),%rax
  cmp    -0x40(%rbp),%rax
  jne    L336
  mov    -0x48(%rbp),%ecx
  mov    -0x44(%rbp),%edx
  mov    -0x38(%rbp),%rsi
  mov    -0x28(%rbp),%rax
  mov    0x10(%rbp),%r8d
  mov    %rax,%rdi
  call   <getCounts@plt>
L336:
  mov    -0x48(%rbp),%edx
  mov    -0x40(%rbp),%rsi
  mov    -0x38(%rbp),%rax
  mov    $0x1,%ecx
  mov    %rax,%rdi
  call   <getBuckets@plt>
  mov    -0x44(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x1c(%rbp)
  movl   $0x0,-0x14(%rbp)
  mov    -0x40(%rbp),%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  jmp    L317
L178:
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,-0x10(%rbp)
  cmpl   $0x0,-0x10(%rbp)
  jle    L446
  subl   $0x1,-0x10(%rbp)
  cmpl   $0x4,0x10(%rbp)
  jne    L207
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%edx
  jmp    L354
L207:
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
L354:
  cmpl   $0x4,0x10(%rbp)
  jne    L57
  mov    -0x10(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rcx
  mov    -0x28(%rbp),%rax
  add    %rcx,%rax
  mov    (%rax),%eax
  jmp    L130
L57:
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x1(%rax),%rcx
  mov    -0x28(%rbp),%rax
  add    %rcx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L130:
  cmp    %eax,%edx
  setle  %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  cmpl   $0x4,0x10(%rbp)
  jne    L367
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  jmp    L276
L367:
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L276:
  mov    %eax,-0xc(%rbp)
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rax,%rdx
  mov    -0xc(%rbp),%eax
  mov    %eax,(%rdx)
  mov    -0xc(%rbp),%eax
  cmp    -0x14(%rbp),%eax
  je     L352
  mov    -0x8(%rbp),%rax
  sub    -0x30(%rbp),%rax
  sar    $0x2,%rax
  mov    %rax,%rdx
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  mov    %edx,(%rax)
  mov    -0xc(%rbp),%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
L352:
  mov    -0x8(%rbp),%rax
  sub    -0x30(%rbp),%rax
  sar    $0x2,%rax
  mov    %rax,%rdx
  mov    -0x1c(%rbp),%eax
  cltq
  cmp    %rax,%rdx
  setle  %al
  movzbl %al,%eax
  mov    %eax,%edi
  call   <assert@plt>
  cmpl   $0x0,-0x10(%rbp)
  jle    L71
  cmpl   $0x4,0x10(%rbp)
  jne    L292
  mov    -0x10(%rbp),%eax
  cltq
  shl    $0x2,%rax
  lea    -0x4(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  jmp    L222
L292:
  mov    -0x10(%rbp),%eax
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
L222:
  cmp    -0x14(%rbp),%eax
  jle    L71
  cmpl   $0x4,0x10(%rbp)
  jne    L114
  mov    -0x10(%rbp),%eax
  cltq
  shl    $0x2,%rax
  lea    -0x4(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  not    %eax
  jmp    L435
L114:
  mov    -0x10(%rbp),%eax
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  not    %eax
  jmp    L435
L71:
  mov    -0x10(%rbp),%eax
L435:
  subq   $0x4,-0x8(%rbp)
  mov    -0x8(%rbp),%rdx
  mov    %eax,(%rdx)
  jmp    L49
L446:
  cmpl   $0x0,-0x10(%rbp)
  je     L108
  mov    -0x1c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x10(%rbp),%edx
  not    %edx
  mov    %edx,(%rax)
  jmp    L49
L108:
  mov    -0x1c(%rbp),%eax
  mov    %eax,-0x18(%rbp)
L49:
  subl   $0x1,-0x1c(%rbp)
L317:
  cmpl   $0x0,-0x1c(%rbp)
  jns    L178
  mov    -0x18(%rbp),%eax
  leave
  ret
```

assistant: ```c
off_t computeBWT(const void *T, off_t *SA, off_t *C, off_t *B, off_t n, off_t k, int cs) {
  off_t *b, i, j, pidx = -1;
  off_t c0, c1;
  if (C == B) {
    getCounts(T, C, n, k, cs);
  }
  getBuckets(C, B, k, 0);
  j = n - 1;
  b = SA + B[c1 = (cs == sizeof(off_t) ? ((const off_t *)T)[(j)] : ((const unsigned char *)T)[(j)])];
  *b++ = ((0 < j) && ((cs == sizeof(off_t) ? ((const off_t *)T)[(j - 1)] : ((const unsigned char *)T)[(j - 1)]) < c1)) ? ~j : j;
  for (i = 0; i < n; ++i) {
    if (0 < (j = SA[i])) {
      --j;
      assert((cs == sizeof(off_t) ? ((const off_t *)T)[(j)] : ((const unsigned char *)T)[(j)]) >= (cs == sizeof(off_t) ? ((const off_t *)T)[(j + 1)] : ((const unsigned char *)T)[(j + 1)]));
      SA[i] = ~((off_t)(c0 = (cs == sizeof(off_t) ? ((const off_t *)T)[(j)] : ((const unsigned char *)T)[(j)])));
      if (c0 != c1) {
        B[c1] = b - SA;
        b = SA + B[c1 = c0];
      }
      assert(i < (b - SA));
      *b++ = ((0 < j) && ((cs == sizeof(off_t) ? ((const off_t *)T)[(j - 1)] : ((const unsigned char *)T)[(j - 1)]) < c1)) ? ~j : j;
    } else if (j != 0) {
      SA[i] = ~j;
    }
  }
  if (C == B) {
    getCounts(T, C, n, k, cs);
  }
  getBuckets(C, B, k, 1);
  for (i = n - 1, b = SA + B[c1 = 0]; 0 <= i; --i) {
    if (0 < (j = SA[i])) {
      --j;
      assert((cs == sizeof(off_t) ? ((const off_t *)T)[(j)] : ((const unsigned char *)T)[(j)]) <= (cs == sizeof(off_t) ? ((const off_t *)T)[(j + 1)] : ((const unsigned char *)T)[(j + 1)]));
      SA[i] = (c0 = (cs == sizeof(off_t) ? ((const off_t *)T)[(j)] : ((const unsigned char *)T)[(j)]));
      if (c0 != c1) {
        B[c1] = b - SA;
        b = SA + B[c1 = c0];
      }
      assert((b - SA) <= i);
      *--b = ((0 < j) && ((cs == sizeof(off_t) ? ((const off_t *)T)[(j - 1)] : ((const unsigned char *)T)[(j - 1)]) > c1)) ? ~((off_t)(cs == sizeof(off_t) ? ((const off_t *)T)[(j - 1)] : ((const unsigned char *)T)[(j - 1)])) : j;
    } else if (j != 0) {
      SA[i] = ~j;
    } else {
      pidx = i;
    }
  }
  return pidx;
}
```