RFR: 8158639: C2 compilation fails with SIGSEGV

[Jamsheed C m]

Hi

Request for review.

bug id:https://bugs.openjdk.java.net/browse/JDK-8158639
webrev:http://cr.openjdk.java.net/~jcm/8158639/webrev.00/

Description
linker elimination(_linkTo*) in C2 was not handled properly for 
deoptimization in _linkTo* callsite.

and in reported bug, this makes wrong data getting loaded in to profile 
information. and later getting crash at recompilation.


Fix: avoid deoptimization at linkTo* callsite.

Best Regards,
Jamsheed