[RFR] 8217359: C2 compiler triggers SIGSEGV after tranformation in ConvI2LNode::Ideal

[Yangfei (Felix)]

Hi,

    Thanks for reviewing.  The regression test is added. 
    New webrev: http://cr.openjdk.java.net/~fyang/8217359/webrev.01/ 
    This is committed to the submit repo: http://hg.openjdk.java.net/jdk/submit/rev/7345adfbc913

    The email I got shows that it passed the Oralce internal tests:
    =================================================
    Build Details: 2019-01-21-1210078.felix.yang.source
    0 Failed Tests
    Mach5 Tasks Results Summary
    •	EXECUTED_WITH_FAILURE: 0
    •	NA: 0
    •	KILLED: 0
    •	UNABLE_TO_RUN: 0
    •	PASSED: 76
    •	FAILED: 0
    =================================================

    OK to push?

Thanks for your help,
Felix

> 
> Hi Felix,
> 
> Could you please add the regression test as jtreg test?
> 
> Otherwise, the fix looks reasonable to me. Nice analysis!
> 
> Thanks,
> Tobias