RFR (8u-dev) 8046233: VerifyError on backward branch

[harold seigel]

Hi,

Please review this straight-forward backport of the fix for 8046233 to 
JDK-8u.

webrev: http://cr.openjdk.java.net/~hseigel/bug_8046233_8/

bug: https://bugs.openjdk.java.net/browse/JDK-8046233

JDK-9 changeset: 
http://hg.openjdk.java.net/jdk9/hs-rt/hotspot/rev/6b01f1a4a7bc

Review thread: 
http://comments.gmane.org/gmane.comp.java.openjdk.hotspot.runtime.devel/12051

The 8u backport was tested with JCK lang, vm, api/java_lang, jtreg, and 
ute Quick and split_verifier tests.

Thanks, Harold