hg: jdk7/hotspot-comp/hotspot: 6910484: incorrect integer optimization (loosing and op-r in a given example)

[vladimir.kozlov at sun.com]

Changeset: 174ade00803b
Author:    kvn
Date:      2010-01-08 09:51 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/174ade00803b

6910484: incorrect integer optimization (loosing and op-r in a given example)
Summary: Remove AND operation only if mask is equal to shift.
Reviewed-by: never

! src/share/vm/opto/divnode.cpp
+ test/compiler/6910484/Test.java