hg: jdk7/hotspot-comp/hotspot: 7029152: Ideal nodes for String intrinsics miss memory edge optimization

[vladimir.kozlov at oracle.com]

Changeset: f9424955eb18
Author:    kvn
Date:      2011-03-30 12:08 -0700
URL:       http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/f9424955eb18

7029152: Ideal nodes for String intrinsics miss memory edge optimization
Summary: In Ideal() method of String intrinsics nodes look for TypeAryPtr::CHARS memory slice if memory is MergeMem. Do not unroll a loop with String intrinsics code.
Reviewed-by: never

! src/share/vm/opto/loopTransform.cpp
! src/share/vm/opto/memnode.cpp
! src/share/vm/opto/memnode.hpp
+ test/compiler/7029152/Test.java