RFR(L): More migration to the L-world

[David Simms]

Looks good Frederic !


On 5/03/2018 5:12 p.m., Frederic Parain wrote:
> Please review the following patch:
>
> http://cr.openjdk.java.net/~fparain/field_flattening/webrev.00/index.html
>
> This patch was started as a fix for field flattening but it ended
> being an omnibus patch addressing the following issues:
>   - Fixed value types runtime tests accordingly to the new language
>     support in javac
>   - Fixed storage and propagation of the ACC_FLATTENABLE flag in JVM
>     meta-data
>   - Fixed value flattening for value fields with the ACC_FLATTENABLE
>     flag set
>   - Fixed uninitialized value for fields with ACC_FLATTENABLE flag set
>   - Fixed klass initialization sequence for ACC_FLATTENABLE support
>   - Implemented flattenable semantic for value fields with
>     ACC_FLATTENABLE flag set
>   - Added test to verify flattenable semantic
>   - Fixed a bug in the verifier (withfield)
>
>
> With this patch, most tests in the runtime/valhalla/valuetypes
> directory now pass in interpreted mode. Only 3 tests still fail,
> 2 because of the value array code that has not been migrated to
> the L-world, 1 because of the Bytecode API which has not been
> migrated either.
>
> Builds and tests (TEST=hotspot_valhalla_runtime) have been run on
> Linux/X64 and MacOSX/X64.
>
> Thank you,
>
> Fred
>