}

// Convert rfft to rfft2d.
// The transformation pattern looks like below:
//
//    input     fft_len
//     \      /
//     rfft
//
//     ||
//     \/
//
//   input       fft_len
//    \            /
//   expand_dim    concat with [1] at the front
//      \         /
//     rfft_2d
//       |
//     squeeze

	var iov Iovec
	iov.Base = (*byte)(unsafe.Pointer(regsout))
	iov.SetLen(int(unsafe.Sizeof(*regsout)))
	return ptracePtr(PTRACE_GETREGSET, pid, uintptr(elfNT_PRSTATUS), unsafe.Pointer(&iov))
}

func PtraceSetRegs(pid int, regs *PtraceRegs) (err error) {
	var iov Iovec
	iov.Base = (*byte)(unsafe.Pointer(regs))
	iov.SetLen(int(unsafe.Sizeof(*regs)))

	if idx == -1 {
		tty = s
	} else {
		tty = s[:idx]
	}
	return
}

func (iov *Iovec) SetLen(length int) {
	iov.Len = uint64(length)
}

func (msghdr *Msghdr) SetControllen(length int) {
	msghdr.Controllen = int32(length)
}

func (cmsg *Cmsghdr) SetLen(length int) {
	cmsg.Len = int32(length)
}

//sys   fcntl(fd int, cmd int, arg int) (val int, err error)

//sys	NtSetInformationProcess(proc Handle, procInfoClass int32, procInfo unsafe.Pointer, procInfoLen uint32) (ntstatus error) = ntdll.NtSetInformationProcess
//sys	NtQuerySystemInformation(sysInfoClass int32, sysInfo unsafe.Pointer, sysInfoLen uint32, retLen *uint32) (ntstatus error) = ntdll.NtQuerySystemInformation

  // CHECK: return %[[RES]]
}

// CHECK-LABEL: lower_rfft_to_rfft2d
func.func @lower_rfft_to_rfft2d(%input: tensor<10x20x30xf32>, %fft_len: tensor<1xi32>) -> tensor<10x20x30xcomplex<f64>> {
  %0 = "tf.RFFT"(%input, %fft_len) : (tensor<10x20x30xf32>, tensor<1xi32>) -> tensor<10x20x30xcomplex<f64>>
  func.return %0: tensor<10x20x30xcomplex<f64>>

	var _p0 uint32
	if watchSubTree {
		_p0 = 1
	}
	r1, _, e1 := Syscall9(procReadDirectoryChangesW.Addr(), 8, uintptr(handle), uintptr(unsafe.Pointer(buf)), uintptr(buflen), uintptr(_p0), uintptr(mask), uintptr(unsafe.Pointer(retlen)), uintptr(unsafe.Pointer(overlapped)), uintptr(completionRoutine), 0)

	var _p0 unsafe.Pointer
	if len(mib) > 0 {
		_p0 = unsafe.Pointer(&mib[0])
	} else {
		_p0 = unsafe.Pointer(&_zero)
	}
	_, _, e1 := syscall_syscall6(libc_sysctl_trampoline_addr, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
	if e1 != 0 {
		err = errnoErr(e1)
	}

	var _p0 unsafe.Pointer
	if len(mib) > 0 {
		_p0 = unsafe.Pointer(&mib[0])
	} else {
		_p0 = unsafe.Pointer(&_zero)
	}
	_, _, e1 := syscall_syscall6(libc_sysctl_trampoline_addr, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
	if e1 != 0 {
		err = errnoErr(e1)
	}

	var _p0 unsafe.Pointer
	if len(mib) > 0 {
		_p0 = unsafe.Pointer(&mib[0])
	} else {
		_p0 = unsafe.Pointer(&_zero)
	}
	_, _, e1 := syscall_syscall6(libc_sysctl_trampoline_addr, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
	if e1 != 0 {
		err = errnoErr(e1)
	}

	var _p0 unsafe.Pointer
	if len(mib) > 0 {
		_p0 = unsafe.Pointer(&mib[0])
	} else {
		_p0 = unsafe.Pointer(&_zero)
	}
	_, _, e1 := syscall_syscall6(libc_sysctl_trampoline_addr, uintptr(_p0), uintptr(len(mib)), uintptr(unsafe.Pointer(old)), uintptr(unsafe.Pointer(oldlen)), uintptr(unsafe.Pointer(new)), uintptr(newlen))
	if e1 != 0 {
		err = errnoErr(e1)
	}