func chanrecv2(hchan <-chan any, elem *any) bool
func chansend1(hchan chan<- any, elem *any)
func closechan(hchan chan<- any)
func chanlen(hchan any) int
func chancap(hchan any) int

var writeBarrier struct {
	enabled bool
	pad     [3]byte
	cgo     bool
	alignme uint64
}

// *byte is really *runtime.Type
func typedmemmove(typ *byte, dst *any, src *any)
func typedmemclr(typ *byte, dst *any)

				}
				dst.b.tophash[dst.i&(abi.MapBucketCount-1)] = top // mask dst.i as an optimization, to avoid a bounds check

				// Copy key.
				if goarch.PtrSize == 4 && t.Key.Pointers() && writeBarrier.enabled {
					// Write with a write barrier.
					*(*unsafe.Pointer)(dst.k) = *(*unsafe.Pointer)(k)
				} else {
					*(*uint32)(dst.k) = *(*uint32)(k)
				}

				typedmemmove(t.Elem, dst.e, e)

// barrier insertion code.
//
// writeBarrier should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/bytedance/sonic
//   - github.com/cloudwego/frugal
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname writeBarrier
var writeBarrier struct {

					dst.e = add(dst.k, abi.MapBucketCount*8)
				}
				dst.b.tophash[dst.i&(abi.MapBucketCount-1)] = top // mask dst.i as an optimization, to avoid a bounds check

				// Copy key.
				if t.Key.Pointers() && writeBarrier.enabled {
					if goarch.PtrSize == 8 {
						// Write with a write barrier.
						*(*unsafe.Pointer)(dst.k) = *(*unsafe.Pointer)(k)
					} else {

	{"makechan", funcTag, 99},
	{"chanrecv1", funcTag, 101},
	{"chanrecv2", funcTag, 102},
	{"chansend1", funcTag, 104},
	{"closechan", funcTag, 105},
	{"chanlen", funcTag, 106},
	{"chancap", funcTag, 106},
	{"writeBarrier", varTag, 108},
	{"typedmemmove", funcTag, 109},
	{"typedmemclr", funcTag, 110},
	{"typedslicecopy", funcTag, 111},
	{"selectnbsend", funcTag, 112},
	{"selectnbrecv", funcTag, 113},

//
//go:nosplit
func bulkBarrierPreWrite(dst, src, size uintptr, typ *abi.Type) {
	if (dst|src|size)&(goarch.PtrSize-1) != 0 {
		throw("bulkBarrierPreWrite: unaligned arguments")
	}
	if !writeBarrier.enabled {
		return
	}
	s := spanOf(dst)
	if s == nil {
		// If dst is a global, use the data or BSS bitmaps to
		// execute write barriers.
		for _, datap := range activeModules() {

	// amd64:`CMPQ\t\(.*\), [$]7`
	return *p < 7
}

func CmpMem4(p *int) bool {
	// amd64:`CMPQ\t\(.*\), [$]7`
	return 7 < *p
}

func CmpMem5(p **int) {
	// amd64:`CMPL\truntime.writeBarrier\(SB\), [$]0`
	*p = nil
}

func CmpMem6(a []int) int {
	// 386:`CMPL\s8\([A-Z]+\),`
	// amd64:`CMPQ\s16\([A-Z]+\),`
	if a[1] > a[2] {
		return 1
	} else {
		return 2
	}
}

					if sym, ok := v.Aux.(*obj.LSym); ok && sym == ir.Syms.WriteBarrier {
						load = v
						break
					}
					// Some architectures have to materialize the address separate from
					// the load.
					if sym, ok := v.Args[0].Aux.(*obj.LSym); ok && sym == ir.Syms.WriteBarrier {
						load = v
						break
					}

//
// Don't set nowritebarrierrec because it's safe for some callees to
// have write barriers enabled.
//
//go:nowritebarrier
func gcDrain(gcw *gcWork, flags gcDrainFlags) {
	if !writeBarrier.enabled {
		throw("gcDrain phase incorrect")
	}

	// N.B. We must be running in a non-preemptible context, so it's
	// safe to hold a reference to our P here.
	gp := getg().m.curg
	pp := gp.m.p.ptr()

	ir.Syms.Typedmemmove = typecheck.LookupRuntimeFunc("typedmemmove")
	ir.Syms.Udiv = typecheck.LookupRuntimeVar("udiv")                 // asm func with special ABI
	ir.Syms.WriteBarrier = typecheck.LookupRuntimeVar("writeBarrier") // struct { bool; ... }
	ir.Syms.Zerobase = typecheck.LookupRuntimeVar("zerobase")

	if Arch.LinkArch.Family == sys.Wasm {