Request for Review (S) 6852078: HSX 14/16 in jdk 5.0: api/javax_management api/org_omg jck tests crashes or make tnameserv crash

[Changpeng Fang]

 http://cr.openjdk.java.net/~cfang/6852078/webrev.00/

Note that I am requesting for change to the current jdk source (For the 
SubCR)

6852078: HSX 14/16 in jdk 5.0: api/javax_management api/org_omg jck 
tests crashes or make tnameserv crash

Problem: Current implementation of superword optimization does not check 
for unsafe memory accesses. Since
unsafe memory accesses could not be aligned appropriately without 
runtime checking, a un-aligned superword
read/write could cause runtime failure.

Solution: Simply disable superword for unsafe memory access whose base 
is top.

Tests: Test case in 6852078

Thanks,

Changpeng