coleenp [Fri, 07 Nov 2008 11:03:32 -0500] rev 1502
6760773: UseCompressedOops is broken with UseParNewGC
Summary: sparc code for gen_subtype_check was doing an ld for a compressed oop with the sign bit set so not comparing, leading to a ClassCastException.
Reviewed-by: phh, never, acorn, kvn, xlu