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

```asm
<validity>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rax
  mov    %rdi,%r8
  lea    0x24(%rdi),%r13
  mov    %rdi,%r11
  mov    $0x8,%ebp
L384:
  mov    %r11,%r10
  mov    $0x1,%r9d
  lea    -0x24(%r11),%rbx
  jmp    L82
L266:
  sub    $0x24,%rdx
  cmp    %rsi,%rdx
  je     L302
L145:
  mov    0x120(%rdx),%ecx
  test   %ecx,%ecx
  je     L266
  cmp    %edi,%ecx
  jne    L266
  mov    $0x0,%eax
L126:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L362:
  cmp    $0x8,%r9d
  jle    L302
  add    $0x4,%r11
  cmp    %r13,%r11
  jne    L384
  mov    $0x7,%ebx
  mov    $0x0,%r10d
  lea    0x1c(%r8),%rbp
  lea    0x164(%r8),%r11
  jmp    L207
L302:
  add    $0x1,%r9d
  add    $0x24,%r10
L82:
  lea    -0x1(%r9),%edx
  cmp    $0x7,%edx
  jg     L362
  mov    (%r10),%edi
  mov    %ebp,%edx
  sub    %r9d,%edx
  lea    (%rdx,%rdx,8),%rdx
  shl    $0x2,%rdx
  mov    %rbx,%rsi
  sub    %rdx,%rsi
  mov    %r11,%rdx
  jmp    L145
L63:
  sub    $0x4,%rdx
  cmp    %rsi,%rdx
  je     L246
L37:
  mov    (%rdx),%ecx
  test   %ecx,%ecx
  je     L63
  cmp    %edi,%ecx
  jne    L63
  mov    $0x0,%eax
  jmp    L126
L246:
  add    $0x24,%rsi
  add    $0x24,%r9
  cmp    %r11,%r9
  je     L180
L367:
  cmp    $0x7,%r10d
  jg     L246
  mov    -0x20(%r9,%r10,4),%edi
  mov    %r9,%rdx
  jmp    L37
L180:
  add    $0x1,%r10
  sub    $0x1,%ebx
  cmp    $0x9,%r10
  je     L330
L207:
  mov    %ebx,%edx
  shl    $0x2,%rdx
  mov    %rbp,%rsi
  sub    %rdx,%rsi
  lea    0x20(%rax),%r9
  jmp    L367
L209:
  mov    $0x0,%ebp
  jmp    L114
L327:
  mov    $0x3,%ebp
  jmp    L114
L228:
  mov    $0x0,%r12d
  jmp    L263
L166:
  mov    $0x3,%r12d
  jmp    L263
L312:
  cmp    %edx,%ebx
  jne    L15
L158:
  add    $0x1,%edx
  cmp    %edx,%r11d
  je     L25
L148:
  cmp    %edi,%esi
  je     L312
L15:
  movslq %edx,%rcx
  lea    (%rcx,%rcx,8),%rcx
  lea    (%rax,%rcx,4),%rcx
  mov    (%rcx,%r9,4),%ecx
  cmp    %ecx,(%r10)
  jne    L158
  test   %ecx,%ecx
  je     L158
  mov    $0x0,%eax
  jmp    L126
L25:
  add    $0x1,%esi
  cmp    %esi,%r13d
  je     L259
L372:
  mov    %ebp,%edx
  movslq %esi,%r9
  jmp    L148
L259:
  lea    0x1(%rbx),%edx
  cmp    $0x8,%ebx
  je     L248
  cmp    $0x2,%edx
  jbe    L209
  lea    -0x2(%rbx),%ecx
  cmp    $0x2,%ecx
  jbe    L327
  sub    $0x5,%ebx
  cmp    $0x2,%ebx
  mov    $0x6,%ebx
  cmovbe %ebx,%ebp
L114:
  add    $0x24,%r10
  mov    %edx,%ebx
L34:
  cmp    $0x2,%edi
  jbe    L228
  cmp    $0x2,%r15d
  jbe    L166
  cmp    $0x2,%r14d
  mov    $0x6,%esi
  cmovbe %esi,%r12d
L263:
  mov    %r12d,%esi
  lea    0x3(%r12),%r13d
  lea    0x3(%rbp),%r11d
  jmp    L372
L248:
  add    $0x1,%edi
  add    $0x4,%r8
  cmp    $0x9,%edi
  je     L281
L359:
  mov    %r8,%r10
  mov    $0x0,%ebx
  mov    $0x0,%ebp
  lea    -0x3(%rdi),%r15d
  lea    -0x6(%rdi),%r14d
  jmp    L34
L330:
  mov    $0x0,%edi
  jmp    L359
L281:
  mov    $0x1,%eax
  jmp    L126
```

assistant: ```c
int validity(int grid[9][9]) {
  int x, y, testx, testy, startx, starty, loop;
  for (y = 0; y < 9; ++y)
    for (x = 0; x < 9; ++x)
      for (testx = 8; testx > x; --testx)
        if ((testx != x) && (grid[testx][y] == grid[x][y]) && (grid[testx][y] != 0)) {
          return 0;
        }
  for (y = 0; y < 9; ++y)
    for (x = 0; x < 9; ++x)
      for (testy = 8; testy > y; --testy)
        if ((testy != y) && (grid[x][testy] == grid[x][y]) && (grid[x][testy] != 0)) {
          return 0;
        }
  for (y = 0; y < 9; ++y)
    for (x = 0; x < 9; ++x) {
      if ((x >= 0) && (x <= 2))
        startx = 0;
      else if ((x >= 3) && (x <= 5))
        startx = 3;
      else if ((x >= 6) && (x <= 8))
        startx = 6;
      if ((y >= 0) && (y <= 2))
        starty = 0;
      else if ((y >= 3) && (y <= 5))
        starty = 3;
      else if ((y >= 6) && (y <= 8))
        starty = 6;
      for (testy = 0; testy < 3; ++testy)
        for (testx = 0; testx < 3; ++testx)
          if (!(((starty + testy) == y) && ((startx + testx) == x)) && (grid[startx + testx][starty + testy] == grid[x][y]) && (grid[startx + testx][starty + testy] != 0)) {
            return 0;
          }
    }
  return 1;
}
```