// along with any necessary parents, and returns nil,
// or else returns an error.
// The permission bits perm (before umask) are used for all
// directories that MkdirAll creates.
// If path is already a directory, MkdirAll does nothing
// and returns nil.
func MkdirAll(path string, perm FileMode) error {
	// Fast path: if we can tell whether path is a directory or file, stop with success or error.
	dir, err := Stat(path)

		}
	}
}

func TestPerm(t *testing.T) {
	Seed(5)
	rand.Seed(5)
	for i := 1; i < 20; i++ {
		actual := Perm(i)
		expected := rand.Perm(i)
		for j := 0; j < i; j++ {
			if actual[j] != expected[j] {
				t.Errorf("Perm call result is unexpected")
			}
		}
	}
}

func TestIntnRange(t *testing.T) {
	// 0 is invalid.

	LXVD2X (CPOOL+R0), PH
	LXVD2X (CPOOL+R16), PL

	// VPERM byte selections
	LXVD2X (CPOOL+R18), SEL2
	LXVD2X (CPOOL+R19), SEL1

	LXVD2X (R16)(x_ptr), T1
	LXVD2X (R0)(x_ptr), T0

	// Put in true little endian order
	XXPERMDI T0, T0, $2, T0
	XXPERMDI T1, T1, $2, T1

	// First round
	VPERM   T1, T0, SEL1, RED2    // d1 d0 d1 d0
	VPERM   ZER, RED2, SEL2, RED1 // 0  d1 d0  0

		return err
	}
	defer in.Close()

	perm, err := in.Stat()
	if err != nil {
		return err
	}

	return AtomicWriteReader(filepath.Join(targetDir, targetFilename), in, perm.Mode())
}

func Copy(srcFilepath, targetDir, targetFilename string) error {
	in, err := os.Open(srcFilepath)
	if err != nil {
		return err
	}
	defer in.Close()

	perm, err := in.Stat()
	if err != nil {
		return err
	}

	errLockViolation syscall.Errno = 0x21
)

// lockedOpenFile is an internal function.
func lockedOpenFile(path string, flag int, perm os.FileMode, lockType uint32) (*LockedFile, error) {
	f, err := Open(path, flag, perm)
	if err != nil {
		return nil, err
	}

	if err = lockFile(syscall.Handle(f.Fd()), lockType); err != nil {
		f.Close()
		return nil, err
	}

}

// MkdirAll via os.MkdirAll
func (fs *DefaultFs) MkdirAll(path string, perm os.FileMode) error {
	return os.MkdirAll(fs.prefix(path), perm)
}

// MkdirAllWithPathCheck checks if path exists already. If not, it creates a directory
// named path, along with any necessary parents, and returns nil, or else returns an error.
// Permission bits perm (before umask) are used for all directories that
// MkdirAllWithPathCheck creates.

	VPERM T_0, R_0, T_1, R_0   // [_,  r₂₆[0], _, 0]
	VPERM T_0, R_1, T_1, R_1   // [_,  r₂₆[1], _, 0]
	VPERM T_0, R_2, T_1, R_2   // [_,  r₂₆[2], _, 0]
	VPERM T_0, R_3, T_1, R_3   // [_,  r₂₆[3], _, 0]
	VPERM T_0, R_4, T_1, R_4   // [_,  r₂₆[4], _, 0]
	VPERM T_0, R5_1, T_1, R5_1 // [_, 5r₂₆[1], _, 0]
	VPERM T_0, R5_2, T_1, R5_2 // [_, 5r₂₆[2], _, 0]
	VPERM T_0, R5_3, T_1, R5_3 // [_, 5r₂₆[3], _, 0]

		return errno
	}

	return nil
}

func Openat(dirfd int, path string, flags int, perm uint32) (int, error) {
	p, err := syscall.BytePtrFromString(path)
	if err != nil {
		return 0, err
	}

	fd, _, errno := syscall.Syscall6(openatTrap, uintptr(dirfd), uintptr(unsafe.Pointer(p)), uintptr(flags), uintptr(perm), 0, 0)
	if errno != 0 {
		return 0, errno
	}

	return int(fd), nil

def ReorderTransposeDequantQuant :
      Pat<(TF_TransposeOp:$old_value
              (TFL_DequantizeOp (TFL_QuantizeOp $input, $qtype)), $perm),
          (TFL_DequantizeOp (TFL_QuantizeOp
                                (TF_TransposeOp $input, $perm),
                                (UpdateShapeWithAxis<-1> $qtype, $old_value))),
          [(CanUpdateShapeWithAxis<-1> $qtype, $old_value)]>;

	VX     d3, d1, d1  \
	VERLLF $7, a1, a1  \
	VERLLF $7, b1, b1  \
	VERLLF $7, c1, c1  \
	VERLLF $7, d1, d1

#define PERMUTE(mask, v0, v1, v2, v3) \
	VPERM v0, v0, mask, v0 \
	VPERM v1, v1, mask, v1 \
	VPERM v2, v2, mask, v2 \
	VPERM v3, v3, mask, v3

#define ADDV(x, v0, v1, v2, v3) \
	VAF x, v0, v0 \
	VAF x, v1, v1 \
	VAF x, v2, v2 \
	VAF x, v3, v3