// The location of each known slot, indexed by SlotID.
	slots []VarLoc
	// The slots present in each register, indexed by register number.
	registers [][]SlotID
}

// reset fills state with the live variables from live.
func (state *stateAtPC) reset(live abt.T) {
	slots, registers := state.slots, state.registers
	for i := range slots {
		slots[i] = VarLoc{}
	}
	for i := range registers {

In Go 1.23, overhead should be in the single digit percentages.

<!-- https://go.dev/issue/62737 , https://golang.org/cl/576681,  https://golang.org/cl/577615 -->
The compiler in Go 1.23 can now overlap the stack frame slots of local variables
accessed in disjoint regions of a function, which reduces stack usage
for Go applications.

<!-- https://go.dev/cl/577935 -->
For 386 and amd64, the compiler will use information from PGO to align certain

   * number of CPUS. Table slots remain empty (null) until they are
   * needed.
   *
   * A single spinlock ("busy") is used for initializing and
   * resizing the table, as well as populating slots with new Cells.
   * There is no need for a blocking lock; when the lock is not
   * available, threads try other slots (or the base).  During these

   * number of CPUS. Table slots remain empty (null) until they are
   * needed.
   *
   * A single spinlock ("busy") is used for initializing and
   * resizing the table, as well as populating slots with new Cells.
   * There is no need for a blocking lock; when the lock is not
   * available, threads try other slots (or the base).  During these

   * number of CPUS. Table slots remain empty (null) until they are
   * needed.
   *
   * A single spinlock ("busy") is used for initializing and
   * resizing the table, as well as populating slots with new Cells.
   * There is no need for a blocking lock; when the lock is not
   * available, threads try other slots (or the base).  During these

   * number of CPUS. Table slots remain empty (null) until they are
   * needed.
   *
   * A single spinlock ("busy") is used for initializing and
   * resizing the table, as well as populating slots with new Cells.
   * There is no need for a blocking lock; when the lock is not
   * available, threads try other slots (or the base).  During these

//
//   - <StorageConcurrentTasksLimit>
//     Setting reduces the parallel Repository Task slots that offload or write data to object storage. The same user interface
//     setting overwrites the storage-defined setting.
//     Optional value, default 0, range: 0-unlimited (0 equals unlimited, which means the maximum configured repository task
//     slots are used for object offloading or writing)
//
//   - <KbBlockSize>

	}

	// Sort normal variables before open-coded-defer slots, so that the
	// latter are grouped together and near the top of the frame (to
	// minimize varint encoding of their varp offset).
	if a.OpenDeferSlot() != b.OpenDeferSlot() {
		return a.OpenDeferSlot()
	}

	// If a and b are both open-coded defer slots, then order them by
	// index in descending order, so they'll be laid out in the frame in

var Meta struct {
	// List contains the list of currently registered meta-data
	// blobs for the running program.
	List []CovMetaBlob

	// PkgMap records mappings from hard-coded package IDs to
	// slots in the List above.
	PkgMap map[int]int

	// Set to true if we discover a package mapping glitch.
	hardCodedListNeedsUpdating bool
}

// AddMeta is invoked during package "init" functions by the

			if n.OpenDeferSlot() {
				// Open-coded defer args slots must be live
				// everywhere in a function, since a panic can
				// occur (almost) anywhere. Because it is live
				// everywhere, it must be zeroed on entry.
				livedefer.Set(int32(i))
				// It was already marked as Needzero when created.
				if !n.Needzero() {
					base.Fatalf("all pointer-containing defer arg slots should have Needzero set")
				}
			}
		}
	}