[11u] RFR: 8246203: Segmentation fault in verification due to stack overflow with -XX:+VerifyIterativeGVN

[Lindenmaier, Goetz]

Hi,

I would downport this for parity with 11.0.9-oracle.

I had to edit another verify() call to make it compile, see phaseX.cpp.
http://cr.openjdk.java.net/~goetz/wr20/8246209-VerifyIterativeGVN-jdk11/01/

Please review.

https://bugs.openjdk.java.net/browse/JDK-8246203
https://hg.openjdk.java.net/jdk/jdk/rev/49fee4ea8073

Best regards,
  Goetz.