hg: jdk7/hotspot-comp/hotspot: 7042153: guarantee(x_compare_res != Constant::not_comparable) failed: incomparable constants in IfOp

[igor.veresov at oracle.com]

Changeset: d4c1fbc3de95
Author:    iveresov
Date:      2011-05-06 12:12 -0700
URL:       http://hg.openjdk.java.net/jdk7/hotspot-comp/hotspot/rev/d4c1fbc3de95

7042153: guarantee(x_compare_res != Constant::not_comparable) failed: incomparable constants in IfOp
Summary: Handle IfOps folding properly in case of unloaded constant oop arguments
Reviewed-by: kvn, never

! src/share/vm/c1/c1_InstructionPrinter.cpp
! src/share/vm/c1/c1_Optimizer.cpp
+ test/compiler/7042153/Test7042153.java