RFR: 8135284: Remove Method::_method_size field

[harold seigel]

Hi Yumin,

The fix looks good.

Thanks, Harold

On 10/12/2015 6:01 PM, Yumin Qi wrote:
> Please review the small changes for
>
> bug: https://bugs.openjdk.java.net/browse/JDK-8135284
> webrev: http://cr.openjdk.java.net/~minqi/8135284/webrev00/
>
> Summary: After JDK-8135085 integration, Method increased 4 bytes for 
> 32-bit platforms(no effect for 64 bit). This change removed 
> _method_size from Method which saved 2 bytes for Method. Deleted 
> method_size related code in SA. The Method size is a constant in 
> Method Type, if it is native method then _*TWO*_ words added which is 
> consistent with hotspot code. btyecodeOffset in Method.java is no 
> longer useful, the offset is now in ConstMethod so removed too.
>
> Tests: JPRT, Runtime Quick test list, run SA on 
> sun.jvm.hotspot.tools.ClassLoaderStats (instrumented Method output to 
> get size).
>
> Thanks
> Yumin