hg: jdk9/hs-comp/hotspot: 8139771: Eliminating CastPP nodes at Phis when they all come from a unique input may cause crash

[roland.westrelin at oracle.com]

Changeset: 9e17d9e4b59f
Author:    roland
Date:      2015-12-11 16:57 +0100
URL:       http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/9e17d9e4b59f

8139771: Eliminating CastPP nodes at Phis when they all come from a unique input may cause crash
Summary: Lost dependency when CastPP at Phis are eliminate
Reviewed-by: kvn

! src/share/vm/opto/block.hpp
! src/share/vm/opto/castnode.cpp
! src/share/vm/opto/castnode.hpp
! src/share/vm/opto/cfgnode.cpp
! src/share/vm/opto/cfgnode.hpp
! src/share/vm/opto/compile.cpp
! src/share/vm/opto/gcm.cpp
! src/share/vm/opto/loopopts.cpp
! src/share/vm/opto/node.cpp
! src/share/vm/opto/phaseX.cpp
! src/share/vm/opto/phaseX.hpp
+ test/compiler/controldependency/TestEliminatedCastPPAtPhi.java