8028764: dtrace/hotspot_jni/ALL/ALL001 crashes the vm on Solaris-amd64, SIGSEGV in MarkSweep::follow_stack()+0x8a Summary: C1 generates code to encode compressed oop into tmp register before runtime call for patching where GC may happen Reviewed-by: iveresov, twisti, kvn Contributed-by: mgerdin <mikael.gerdin@oracle.com>

8029464: assert(ft == ttkp->cast_to_ptr_type(jtkp->ptr()) || ft->isa_narrowoop() Summary: Fix the assert check for narrow klass pointer. Reviewed-by: twisti, kvn