}
				if n.Heapaddr != nil {
					// If this variable moved to the heap, then
					// its stack copy is not live.
					continue
				}
				// Note: zeroing is handled by zeroResults in walk.go.
				livedefer.Set(int32(i))
			}
			if n.IsOutputParamHeapAddr() {
				// This variable will be overwritten early in the function

	// if Listener is set, use it and omit BindAddress/BindPort/BindNetwork.
	Listener net.Listener

	// ServerCert is the TLS cert info for serving secure traffic
	ServerCert GeneratableKeyCert
	// SNICertKeys are named CertKeys for serving secure traffic with SNI support.
	SNICertKeys []cliflag.NamedCertKey
	// CipherSuites is the list of allowed cipher suites for the server.

At the start of the function, the arguments are assumed
to be initialized but the results are assumed uninitialized.
If the results will hold live pointers during a call instruction,
the function should start by zeroing the results and then
executing the pseudo-instruction <code>GO_RESULTS_INITIALIZED</code>.
This instruction records that the results are now initialized
and should be scanned during stack movement and garbage collection.

			(MOVBstore [0] ptr (MOVWconst [0]) mem)))

// Medium zeroing uses a duff device
// 4 and 128 are magic constants, see runtime/mkduff.go
(Zero [s] {t} ptr mem)
	&& s%4 == 0 && s > 4 && s <= 512
	&& t.Alignment()%4 == 0 && !config.noDuffDevice =>
	(DUFFZERO [4 * (128 - s/4)] ptr (MOVWconst [0]) mem)

// Large zeroing uses a loop
(Zero [s] {t} ptr mem)

	evexZ := byte(0)
	evexLL := evex.L()
	evexB := byte(0)
	evexV := byte(1)
	evexA := byte(0)
	if suffix.zeroing {
		if !evex.ZeroingEnabled() {
			ctxt.Diag("unsupported zeroing: %v", p)
		}
		if k == nil {
			// When you request zeroing you must specify a mask register.
			// See issue 57952.
			ctxt.Diag("mask register must be specified for .Z instructions: %v", p)

				clobbers: buildReg("R16 R17 R20 R30"),
			},
			faultOnNilArg0: true,
			unsafePoint:    true, // FP maintenance around DUFFZERO can be clobbered by interrupts
		},

		// large zeroing
		// arg0 = address of memory to zero (in R16 aka arm64.REGRT1, changed as side effect)
		// arg1 = address of the last 16-byte unit to zero
		// arg2 = mem
		// returns mem
		//	STP.P	(ZR,ZR), 16(R16)

		// and extended for more than just bytes (like nibbles
		// and uint16s) by using an appropriate constant.
		//
		// To summarize the technique, quoting from that page:
		// "[It] works by first zeroing the high bits of the [8]
		// bytes in the word. Subsequently, it adds a number that
		// will result in an overflow to the high bit of a byte if
		// any of the low bits were initially set. Next the high

		// value of the argument type. This avoids including
		// string.h for memset, and is also robust to C++
		// types with constructors. Both GCC and LLVM optimize
		// this into just zeroing _cgo_a.
		fmt.Fprintf(fgcc, "\ttypedef %s %v _cgo_argtype;\n", ctype, p.packedAttribute())
		fmt.Fprintf(fgcc, "\tstatic _cgo_argtype _cgo_zero;\n")
		fmt.Fprintf(fgcc, "\t_cgo_argtype _cgo_a = _cgo_zero;\n")

	B := uint8(0)
	for overLoadFactor(hint, B) {
		B++
	}
	h.B = B

	// allocate initial hash table
	// if B == 0, the buckets field is allocated lazily later (in mapassign)
	// If hint is large zeroing this memory could take a while.
	if h.B != 0 {
		var nextOverflow *bmap
		h.buckets, nextOverflow = makeBucketArray(t, h.B, nil)
		if nextOverflow != nil {
			h.extra = new(mapextra)

		typ = *(**_type)(unsafe.Pointer(addr))
		addr += mallocHeaderSize
	} else {
		typ = span.largeType
		if typ == nil {
			// Allow a nil type here for delayed zeroing. See mallocgc.
			return typePointers{}
		}
	}
	gcdata := typ.GCData
	return typePointers{elem: addr, addr: addr, mask: readUintptr(gcdata), typ: typ}
}