[9] RFR (XS): 8146983: C1: assert(appendix.not_null()) failed for invokehandle bytecode

Vladimir Ivanov vladimir.x.ivanov at oracle.com
Wed Jan 13 13:53:18 UTC 2016


Assertion added in 8140659 is too strong: sometimes appendix patching 
for invokehandle happens when there's no appendix argument.

Appendix is present only for MH::invoke (_invokeGeneric; see 
LinkResolver::lookup_polymorphic_method). MH::invokeExact doesn't have 
an appendix. But C1 uses patching for all unresolved invokedynamic & 
invokehandle call sites (see GraphBuilder::invoke and 

The fix is to remove the assertion.

Also, fixed a leftover from 8140659: appendix resolution for 
invokehandle should be idempotent as well.

Testing: JPRT

Best regards,
Vladimir Ivanov

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