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

```asm
<conv_vko>:
  endbr64
  push   %r15
  mov    %r9d,%r10d
  mov    %ecx,%r15d
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    0x48(%rsp),%ebp
  mov    0x50(%rsp),%r13d
  mov    %rsi,-0x58(%rsp)
  mov    %rdx,-0x38(%rsp)
  mov    0x40(%rsp),%r12d
  lea    (%r8,%rbp,2),%esi
  mov    %rdi,-0x68(%rsp)
  lea    (%r9,%r13,2),%edi
  mov    0x58(%rsp),%ebx
  mov    %esi,%eax
  sub    0x60(%rsp),%eax
  mov    %r9d,-0x5c(%rsp)
  cltd
  mov    %ecx,0x4(%rsp)
  mov    %r8d,%ecx
  idivl  0x70(%rsp)
  imul   %r10d,%ecx
  imul   %r12d,%ecx
  lea    0x1(%rax),%r11d
  mov    %eax,-0x24(%rsp)
  mov    %edi,%eax
  sub    0x68(%rsp),%eax
  cltd
  mov    %r11d,(%rsp)
  idivl  0x78(%rsp)
  mov    %r11d,%edx
  lea    0x1(%rax),%r9d
  mov    %eax,-0x44(%rsp)
  mov    0x60(%rsp),%eax
  imul   0x68(%rsp),%eax
  mov    %r9d,-0x30(%rsp)
  imul   %r9d,%edx
  imul   %r12d,%eax
  imul   %ebx,%edx
  mov    %eax,%r14d
  mov    0x68(%rsp),%eax
  imul   %r12d,%eax
  mov    %eax,-0x78(%rsp)
  test   %r15d,%r15d
  jle    L11
  movslq %edx,%rdx
  imul   %ebx,%r9d
  sub    %ebp,%esi
  sub    %r13d,%edi
  lea    0x0(,%rdx,8),%rax
  movl   $0x0,-0x2c(%rsp)
  mov    %rax,-0x10(%rsp)
  movslq %ecx,%rax
  shl    $0x3,%rax
  mov    %r9d,-0x28(%rsp)
  mov    %rax,-0x8(%rsp)
  movslq %ebx,%rax
  shl    $0x3,%rax
  mov    %esi,-0x74(%rsp)
  mov    %rax,-0x50(%rsp)
  lea    -0x1(%rbx),%eax
  mov    %rax,-0x18(%rsp)
  mov    %edi,-0x60(%rsp)
L47:
  mov    (%rsp),%eax
  test   %eax,%eax
  jle    L59
  mov    -0x38(%rsp),%rax
  movl   $0x0,-0x3c(%rsp)
  xor    %r11d,%r11d
  movl   $0x0,-0x40(%rsp)
  add    $0x8,%rax
  mov    %rax,-0x20(%rsp)
L102:
  mov    -0x30(%rsp),%edx
  test   %edx,%edx
  jle    L49
  movslq -0x3c(%rsp),%rax
  mov    -0x38(%rsp),%rdi
  movl   $0x0,-0x48(%rsp)
  xor    %r10d,%r10d
  lea    (%rdi,%rax,8),%rdi
  add    -0x18(%rsp),%rax
  mov    %rdi,-0x70(%rsp)
  mov    -0x20(%rsp),%rdi
  lea    (%rdi,%rax,8),%rdi
  nopl   (%rax)
L111:
  xor    %r8d,%r8d
  xor    %esi,%esi
  test   %r14d,%r14d
  jle    L84
  cs nopw 0x0(%rax,%rax,1)
L92:
  mov    %esi,%eax
  cltd
  idivl  -0x78(%rsp)
  cltd
  idivl  0x60(%rsp)
  mov    %esi,%eax
  lea    (%rdx,%r11,1),%ecx
  cltd
  idiv   %r12d
  mov    %edx,%r9d
  cltd
  idivl  0x68(%rsp)
  add    %r10d,%edx
  cmp    %ecx,%ebp
  setg   %r15b
  cmp    %edx,%r13d
  setg   %al
  or     %r15d,%eax
  cmp    -0x74(%rsp),%ecx
  setge  %r15b
  or     %al,%r15b
  jne    L8
  cmp    -0x60(%rsp),%edx
  jge    L8
  mov    %ecx,%eax
  sub    %r13d,%edx
  mov    -0x68(%rsp),%rcx
  sub    %ebp,%eax
  imul   -0x5c(%rsp),%eax
  add    %edx,%eax
  imul   %r12d,%eax
  add    %r9d,%eax
  cltq
  movsd  (%rcx,%rax,8),%xmm1
  test   %ebx,%ebx
  jle    L8
  mov    -0x58(%rsp),%rcx
  movslq %r8d,%rax
  lea    (%rcx,%rax,8),%rdx
  mov    -0x70(%rsp),%rax
  nopl   0x0(%rax)
L57:
  movsd  (%rdx),%xmm0
  add    $0x8,%rax
  add    $0x8,%rdx
  mulsd  %xmm1,%xmm0
  addsd  -0x8(%rax),%xmm0
  movsd  %xmm0,-0x8(%rax)
  cmp    %rax,%rdi
  jne    L57
L8:
  add    $0x1,%esi
  add    %ebx,%r8d
  cmp    %esi,%r14d
  jne    L92
L84:
  mov    -0x50(%rsp),%rdx
  mov    -0x48(%rsp),%esi
  add    %rdx,-0x70(%rsp)
  add    0x78(%rsp),%r10d
  lea    0x1(%rsi),%eax
  add    %rdx,%rdi
  cmp    %esi,-0x44(%rsp)
  je     L49
  mov    %eax,-0x48(%rsp)
  jmp    L111
L49:
  mov    -0x40(%rsp),%edi
  mov    -0x28(%rsp),%ecx
  add    0x70(%rsp),%r11d
  add    %ecx,-0x3c(%rsp)
  lea    0x1(%rdi),%eax
  cmp    %edi,-0x24(%rsp)
  je     L59
  mov    %eax,-0x40(%rsp)
  jmp    L102
L59:
  mov    -0x10(%rsp),%rdi
  addl   $0x1,-0x2c(%rsp)
  add    %rdi,-0x38(%rsp)
  mov    -0x2c(%rsp),%eax
  mov    -0x8(%rsp),%rdi
  add    %rdi,-0x68(%rsp)
  cmp    %eax,0x4(%rsp)
  jne    L47
L11:
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
void conv_vko(double *v, double *k, double *o, int n, int h, int w, int f, int ph, int pw, int out_f, int kh, int kw, int sh, int sw) {
  int out_h = (h + 2 * ph - kh) / sh + 1;
  int out_w = (w + 2 * pw - kw) / sw + 1;
  int colcol = kh * kw * f;
  int fkw = f * kw;
  int o_size = out_h * out_w * out_f;
  int v_size = h * w * f;
  double *o_ptr = o;
  double *v_ptr = v;
  int n_idx, ho, wo, fo, kcoli;
  int v_hi, v_wi, fi, v_idx, off_o, off_k, sho, swo;
  for (n_idx = 0; n_idx < n; ++n_idx) {
    for (ho = 0; ho < out_h; ++ho) {
      for (wo = 0; wo < out_w; ++wo) {
        off_o = out_f * (wo + out_w * ho);
        sho = ho * sh;
        swo = wo * sw;
        for (kcoli = 0; kcoli < colcol; ++kcoli) {
          v_hi = sho + kcoli / fkw % kh;
          v_wi = swo + kcoli / f % kw;
          if ((v_hi < ph) | (v_wi < pw) | (v_hi >= h + ph) | (v_wi >= w + pw)) {
            continue;
          }
          fi = kcoli % f;
          v_idx = fi + f * (v_wi - pw + w * (v_hi - ph));
          register double part = v_ptr[v_idx];
          for (fo = 0; fo < out_f; ++fo) {
            o_ptr[fo + off_o] += part * k[kcoli * out_f + fo];
          }
        }
      }
    }
    o_ptr += o_size;
    v_ptr += v_size;
  }
}
```