RFR (XS): 8201167: Remove MacroAssembler::cmp_heap_oop on x86

[Erik Österlund]

Hi,

The MacroAssembler::cmp_heap_oop member function on x86 is not currently 
used anywhere in hotspot. Moreover, it is no longer safe to use it with 
modern GCs using load barriers. Since it is unsafe to use and is not 
used today, it should be removed.

Webrev:
http://cr.openjdk.java.net/~eosterlund/8201167/webrev.00/

Thanks,
/Erik