RFR: ZGC: C2: Fix and enable clone intrinsic

Roland Westrelin rwestrel at redhat.com
Mon May 28 12:15:57 UTC 2018

Hi Nils,

> Webrev: http://cr.openjdk.java.net/~neliasso/zgc/fix_clone/webrev/

I'm surprised that works. kit.access_load_at() needs, at least, a memory
state that it should get from kit but kit is:

GraphKit kit;

current memory state is not passed to the GraphKit constructor so
GraphKit can't have the right memory state.

You could use the other constructor GraphKit::GraphKit(JVMState* jvms)
and use the jvms from the ArrayCopyNode but I think that would break if
this code is called from an igvn.


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