//
//go:noescape
func typedmemclrpartial(t *abi.Type, ptr unsafe.Pointer, off, size uintptr)

// typedslicecopy copies a slice of elemType values from src to dst,
// returning the number of elements copied.
//
//go:noescape
func typedslicecopy(t *abi.Type, dst, src unsafeheader.Slice) int

// typedarrayclear zeroes the value at ptr of an array of elemType,
// only clears len elem.