RFR: 8158639: C2 compilation fails with SIGSEGV

[Jamsheed C m]

Hi,

bug id:https://bugs.openjdk.java.net/browse/JDK-8158639 
<https://bugs.openjdk.java.net/browse/JDK-8158639>
webrev:http://cr.openjdk.java.net/~jcm/8158639/webrev.00/ 
<http://cr.openjdk.java.net/%7Ejcm/8158639/webrev.00/>

Request for review.

Description
_linkTo* adapter elimination  in C2 cause wrong jvms  for null checks at 
callsite. which makes MemberName missing for trap and reexecute at these 
sites.

and in reported bug, this makes wrong data getting loaded in profile 
data for trap and reexecute.and later getting crash at recompilation.

Fix: fix the jvms based on _linkTo*(Declared method signature ) at these 
trap sites.


Best Regards,

Jamsheed



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