Flattened value type field support for C2

[Tobias Hartmann]

Hi Roland,

On 14.11.2016 15:10, Roland Westrelin wrote:
> 
> Another question: is a value type field always flattened? Are recursive
> declarations forbidden?

Both yes. The current prototype always flattens value type fields and recursive declarations are forbidden by javac:

/oracle/valhalla/hotspot/test/compiler/valhalla/valuetypes/ValueTypeTestBench.java:61: error: cyclic value type membership involving MyValue1
    final MyValue1 v3;

Best regards,
Tobias

> 
> Roland.
>