EVALUATION

http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/fc4be448891f
                                     

EVALUATION

http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/fc4be448891f
                                     

SUGGESTED FIX

Fix eliminate_card_mark() to eliminate G1 pre/post barriers.
                                     

PUBLIC COMMENTS

Problem:
EA expects only card mark store after oop store but
barriers for G1 are much more complex.

Solution:
- Fix eliminate_card_mark() to eliminate G1 pre/post barriers.

- Used idealKit for write_barrier_post() method and moved it down
in the file. Renamed some variables to distinguish them from
methods names.

- Check IGVN delay_transform flag in IdealKit when setting bottom_type
for new nodes.

- Don't clone memory around leaf call in IdealKit since it modifies
only raw memory.

- Explicitly remove the original merge region in IfNode split_if()
otherwise it will not be removed if it has dead users and
it will cause unique_ctrl_out() to return an incorrect result.

- Fix IdealKit code in LibraryCallKit::inline_unsafe_access()
which produced incorrect graph.

- Fix EA to not generated duplicated Phi nodes for the same
memory slice in ConnectionGraph::create_split_phi().

- Fix MachNode::adr_type for direct addressing modes to use
ideal type if it is ptr. And remove rawptr cutout in
mach node adr type verification code.