// instantiated types, this is same as the type name of the origin type.
func (t *Named) Obj() *TypeName {
	if t.inst == nil {
		return t.obj
	}
	return t.inst.orig.obj
}

// Origin returns the generic type from which the named type t is
// instantiated. If t is not an instantiated type, the result is t.
func (t *Named) Origin() *Named {
	if t.inst == nil {
		return t
	}
	return t.inst.orig

// a subproblem at most half as big, invokes itself recursively,
// and then runs a sequence of linear passes to turn the answer
// for the subproblem into the answer for the original problem.
// This gives T(N) = O(N) + T(N/2) = O(N) + O(N/2) + O(N/4) + ... = O(N).
//
// The outline of the code, with the forward and backward scans
// through O(N)-sized arrays called out, is:
//
// sais_I_N

	// An attempt to synchronize on the address would cause crash.
	MOVD	R9, R21	// remember the original function
	MOVD	$__tsan_go_ignore_sync_begin(SB), R9
	load_g
	MOVD	g_racectx(g), R0	// goroutine context
	BL	racecall<>(SB)
	MOVD	R21, R9	// restore the original function
	// Call the atomic function.
	// racecall will call LLVM race code which might clobber R28 (g)
	load_g

	// if a method is embedded via multiple overlapping embedded interfaces, we
	// don't provide a guarantee which "original m" got chosen for the embedding
	// interface. See also go.dev/issue/34421.
	//
	// If we don't care to provide this identity guarantee anymore, instead of
	// reusing the original method in embeddings, we can clone the method's Func
	// Object and give it the position of a corresponding embedded interface. Then

	-run=""
		if non-empty, specifies a regular expression to select
		directives whose full original source text (excluding
		any trailing spaces and final newline) matches the
		expression.

	-skip=""
		if non-empty, specifies a regular expression to suppress
		directives whose full original source text (excluding
		any trailing spaces and final newline) matches the

// instantiated types, this is same as the type name of the origin type.
func (t *Named) Obj() *TypeName {
	if t.inst == nil {
		return t.obj
	}
	return t.inst.orig.obj
}

// Origin returns the generic type from which the named type t is
// instantiated. If t is not an instantiated type, the result is t.
func (t *Named) Origin() *Named {
	if t.inst == nil {
		return t
	}
	return t.inst.orig

// It is also valid to use &^ to round pointers, usually for alignment.
// In all cases, the result must continue to point into the original allocated object.
//
// Unlike in C, it is not valid to advance a pointer just beyond the end of
// its original allocation:
//
//	// INVALID: end points outside allocated space.
//	var s thing
//	end = unsafe.Pointer(uintptr(unsafe.Pointer(&s)) + unsafe.Sizeof(s))
//

// Methods attached to a *Named type are also instantiated, and associated with
// a new *Func that has the same position as the original method, but nil function
// scope.
//
// If ctxt is non-nil, it may be used to de-duplicate the instance against
// previous instances with the same identity. As a special case, generic
// *Signature origin types are only considered identical if they are pointer
// equivalent, so that instantiating distinct (but possibly identical)

	// An attempt to synchronize on the address would cause crash.
	MOVQ	AX, BX	// remember the original function
	MOVQ	$__tsan_go_ignore_sync_begin(SB), AX
	MOVQ	g_racectx(R14), RARG0	// goroutine context
	CALL	racecall<>(SB)
	MOVQ	BX, AX	// restore the original function
	// Call the atomic function.
	MOVQ	g_racectx(R14), RARG0	// goroutine context
	MOVQ	8(SP), RARG1	// caller pc

	var echRetryConfigList []byte
	if hs.echContext != nil {
		confTranscript := cloneHash(hs.echContext.innerTranscript, hs.suite.hash)
		confTranscript.Write(hs.serverHello.original[:30])
		confTranscript.Write(make([]byte, 8))
		confTranscript.Write(hs.serverHello.original[38:])
		acceptConfirmation := hs.suite.expandLabel(
			hs.suite.extract(hs.echContext.innerHello.random, nil),
			"ech accept confirmation",
			confTranscript.Sum(nil),