// StackSet.Stacks[a].Sources[b] points to this source.
	//
	// No stack will be referenced twice in the Places slice for a given
	// StackSource. In case of recursion, Places will contain the outer-most
	// entry in the recursive stack. E.g., if stack S has source X at positions
	// 4,6,9,10, the Places entry for X will contain [S,4].
	Places []StackSlot

	// Combined count of stacks where this source is the leaf.

  // attribute of the MLIR op. The assigned device might be remote, not
  // available during compilation or compilation only device for on demand
  // execution which may create a recursion if used for constant folding.
  constexpr char kHostCpu[] = "/job:localhost/replica:0/task:0/CPU:0";
  TFE_OpSetDevice(op, kHostCpu, status);
  RETURN_FAILURE_IF_ERROR(status);
  for (const auto& attr : node_def->attr()) {

		return subst.tuple(t)

	case *Signature:
		// Preserve the receiver: it is handled during *Interface and *Named type
		// substitution.
		//
		// Naively doing the substitution here can lead to an infinite recursion in
		// the case where the receiver is an interface. For example, consider the
		// following declaration:
		//
		//  type T[A any] struct { f interface{ m() } }
		//

//
// symMerge assumes non-degenerate arguments: a < m && m < b.
// Having the caller check this condition eliminates many leaf recursion calls,
// which improves performance.
func symMerge(data Interface, a, m, b int) {
	// Avoid unnecessary recursions of symMerge
	// by direct insertion of data[a] into data[m:b]
	// if data[a:m] only contains one element.
	if m-a == 1 {

		return subst.tuple(t)

	case *Signature:
		// Preserve the receiver: it is handled during *Interface and *Named type
		// substitution.
		//
		// Naively doing the substitution here can lead to an infinite recursion in
		// the case where the receiver is an interface. For example, consider the
		// following declaration:
		//
		//  type T[A any] struct { f interface{ m() } }
		//

//
// symMerge assumes non-degenerate arguments: a < m && m < b.
// Having the caller check this condition eliminates many leaf recursion calls,
// which improves performance.
func symMerge_func(data lessSwap, a, m, b int) {
	// Avoid unnecessary recursions of symMerge
	// by direct insertion of data[a] into data[m:b]
	// if data[a:m] only contains one element.
	if m-a == 1 {

        }
    }

    /**
     * A shareable backing cache for different caching exclude factories.
     * Synchronization is ad-hoc, since `computeIfAbsent` on a concurrent hash map
     * will not allow for recursion, which is the case for us whenever a cache is
     * found at different levels.
     */
    public static class MergeCaches {

//
// symMerge assumes non-degenerate arguments: a < m && m < b.
// Having the caller check this condition eliminates many leaf recursion calls,
// which improves performance.
func symMergeCmpFunc[E any](data []E, a, m, b int, cmp func(a, b E) int) {
	// Avoid unnecessary recursions of symMerge
	// by direct insertion of data[a] into data[m:b]
	// if data[a:m] only contains one element.
	if m-a == 1 {

start 0 call big
big 10000

# But not if the frame is nosplit.
start 0 call big
big 10000 nosplit
REJECT

# Recursion is okay.
start 0 call start

# Recursive nosplit runs out of space.
start 0 nosplit call start
REJECT

# Non-trivial recursion runs out of space.
start 0 call f1
f1 0 nosplit call f2
f2 0 nosplit call f1
REJECT
# Same but cycle starts below nosplit entry.

//
// symMerge assumes non-degenerate arguments: a < m && m < b.
// Having the caller check this condition eliminates many leaf recursion calls,
// which improves performance.
func symMergeOrdered[E cmp.Ordered](data []E, a, m, b int) {
	// Avoid unnecessary recursions of symMerge
	// by direct insertion of data[a] into data[m:b]
	// if data[a:m] only contains one element.
	if m-a == 1 {