hg: hsx/hotspot-comp/hotspot: 7148109: C2 compiler consumes too much heap resources

[vladimir.kozlov at oracle.com]

Changeset: a1c7f6472621
Author:    kvn
Date:      2012-08-27 09:46 -0700
URL:       http://hg.openjdk.java.net/hsx/hotspot-comp/hotspot/rev/a1c7f6472621

7148109: C2 compiler consumes too much heap resources
Summary: Add split_arena to allocate temporary arrays in PhaseChaitin::Split() and free them on method's exit.
Reviewed-by: twisti

! src/share/vm/opto/chaitin.cpp
! src/share/vm/opto/chaitin.hpp
! src/share/vm/opto/reg_split.cpp