}
	}
	addEntry(typ, case_, tab)

	return newC
}

// Empty interface switch cache. Contains one entry with a nil Typ (which
// causes a cache lookup to fail immediately.)
var emptyInterfaceSwitchCache = abi.InterfaceSwitchCache{Mask: 0}

// reflect_ifaceE2I is for package reflect,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:

			interfaceSwitchGen++
			c := rttype.NewCursor(lsym, 0, rttype.InterfaceSwitch)
			c.Field("Cache").WritePtr(typecheck.LookupRuntimeVar("emptyInterfaceSwitchCache"))
			c.Field("NCases").WriteInt(int64(len(interfaceCases)))
			array, sizeDelta := c.Field("Cases").ModifyArray(len(interfaceCases))
			for i, c := range interfaceCases {