[14] RFR(XS): 8230762: Change MacroAssembler::debug32/64 to use fatal instead of assert

[Christian Hagedorn]

Hi

Please review the following patch:
https://bugs.openjdk.java.net/browse/JDK-8230762
http://cr.openjdk.java.net/~chagedorn/8230762/webrev.00/

The webrev is based on JDK-8225653. MacroAssembler::debug32/64 is 
changed such that the last operation is fatal(). I think that some 
additional instructions like ThreadStateTransition::transition or 
tty->print_cr are then not needed anymore. I also ensured that after 
each debug32/64 call a hlt is directly emitted (which was required in 
generate_verify_oop - in MacroAssembler::stop we already have a hlt 
instruction afterwards).

Thank you!

Best regards,
Christian