Currently, only the constructor form of the Array function is compiled.
We only compile construction of Array objects if we can determine that
they are immediately assigned to a typed list. Consequently, we don't
have to deal with sparse arrays.
Change-Id: I2abd15139eb9a0d530ad49df7313b8dba415ae77
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>