// nothing else allocates from it.
	runtime.Acquirem()

	// Make 1-byte allocations until we get a fresh tiny slot.
	aligned := false
	for i := 0; i < 16; i++ {
		x := runtime.Escape(new(byte))
		if uintptr(unsafe.Pointer(x))&0xf == 0xf {
			aligned = true
			break
		}
	}
	if !aligned {
		runtime.Releasem()
		t.Fatal("unable to get a fresh tiny slot")
	}

	// Create a 4-byte object so that the current

	case "aix":
		// There is no alignment on AIX.
		salign = 1
	case "darwin", "ios", "illumos", "solaris":
		// NOTE: It seems like 64-bit Darwin, Illumos and Solaris
		// kernels still require 32-bit aligned access to network
		// subsystem.
		if SizeofPtr == 8 {
			salign = 4
		}
	case "netbsd", "openbsd":
		// NetBSD and OpenBSD armv7 require 64-bit alignment.
		if runtime.GOARCH == "arm" {
			salign = 8
		}

	case *Struct:
		if len(t.fields) == 0 && _IsSyncAtomicAlign64(T) {
			// Special case: sync/atomic.align64 is an
			// empty struct we recognize as a signal that
			// the struct it contains must be
			// 64-bit-aligned.
			//
			// This logic is equivalent to the logic in
			// cmd/compile/internal/types/size.go:calcStructOffset
			return 8
		}

		// spec: "For a variable x of struct type: unsafe.Alignof(x)

		// The Linux implementation requires that the address
		// addr be page-aligned, and allows length to be zero.
		throw("unaligned sysNoHugePageOS")
	}
	madvise(v, n, _MADV_NOHUGEPAGE)
}

func sysHugePageCollapseOS(v unsafe.Pointer, n uintptr) {
	if uintptr(v)&(physPageSize-1) != 0 {
		// The Linux implementation requires that the address
		// addr be page-aligned, and allows length to be zero.
		throw("unaligned sysHugePageCollapseOS")

    TF_DataType, const int64_t* dims, int num_dims, void* data, size_t len,
    void (*deallocator)(void* data, size_t len, void* arg),
    void* deallocator_arg);

// Returns the alignment, in bytes, required for allocating aligned tensors.
//
// This can be used in combination with TF_NewTensor to manually manage
// memory while ensuring the resulting tensors satisfy TensorFlow's
// memory alignment preferences.

entry:
	ADDV	R4, R14, R12	// R6 start of a, R14 end of a
	BEQ	R4, R12, samebytes // length is 0

	SRLV	$4, R14		// R14 is number of chunks
	BEQ	R0, R14, byte_loop

	// make sure both a and b are aligned.
	OR	R4, R6, R15
	AND	$7, R15
	BNE	R0, R15, byte_loop

	PCALIGN	$16
chunk16_loop:
	BEQ	R0, R14, byte_loop
	MOVV	(R4), R8
	MOVV	(R6), R9
	BNE	R8, R9, byte_loop
	MOVV	8(R4), R16
	MOVV	8(R6), R17

	// A hint is considered socket aligned if sockets across which numa nodes span is equal to minSockets
	minSockets := (minAffinitySize + numaNodesPerSocket - 1) / numaNodesPerSocket
	return p.topology.CPUDetails.SocketsInNUMANodes(numaNodesBitMask...).Size() == minSockets
}

// getAlignedCPUs return set of aligned CPUs based on numa affinity mask and configured policy options.

	case *Struct:
		if len(t.fields) == 0 && IsSyncAtomicAlign64(T) {
			// Special case: sync/atomic.align64 is an
			// empty struct we recognize as a signal that
			// the struct it contains must be
			// 64-bit-aligned.
			//
			// This logic is equivalent to the logic in
			// cmd/compile/internal/types/size.go:calcStructOffset
			return 8
		}

		// spec: "For a variable x of struct type: unsafe.Alignof(x)

	AND	R1, R3
#ifdef GOARCH_mips
	// Big endian.  ptr = ptr ^ 3
	XOR	$3, R1
#endif
	AND	$3, R1, R4	// R4 = ((ptr & 3) * 8)
	SLL	$3, R4
	SLL	R4, R2, R2	// Shift val for aligned ptr. R2 = val << R4
	SYNC
try_or8:
	LL	(R3), R4	// R4 = *R3
	OR	R2, R4
	SC	R4, (R3)	// *R3 = R4
	BEQ	R4, try_or8
	SYNC
	RET

// void	And8(byte volatile*, byte);
TEXT ·And8(SB),NOSPLIT,$0-5

 * units away from 0 and 0.499 towards 0. The smallest unit this returns is "µs"; the largest unit
 * it returns is "s". For values in [-499..499] this returns "  0 µs".
 *
 * The returned string attempts to be column-aligned to 6 characters. For negative and large values
 * the returned string may be longer.
 */
fun formatDuration(ns: Long): String {
  val s =
    when {
      ns <= -999_500_000 -> "${(ns - 500_000_000) / 1_000_000_000} s "