RFR(S): 8086046: escape analysis generates incorrect code as of B67

Vladimir Kozlov vladimir.kozlov at oracle.com
Fri Jun 12 16:53:07 UTC 2015

This looks good. Thanks, Roland.


On 6/12/15 6:01 AM, Roland Westrelin wrote:
> http://cr.openjdk.java.net/~roland/8086046/webrev.00/
> The membar_for_arraycopy() code returns true if the MemBarNode is a membar following an arraycopy that can modify memory t_oop. After an ArrayCopyNode is expanded, that code must work with a subgraph that merges multiple code path. The membar_for_arraycopy() didn’t correctly match on that graph pattern. To be safer, I also made some change so the membar_for_arraycopy() code not only recognizes calls to fast path stubs but also the CallStaticJavaNode for the “slow_arraycopy”.
> Roland.

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