hg: panama/dev: Fix repeated vector box expansion attempts.

[vladimir.x.ivanov at oracle.com]

Changeset: 0f55e34e273f
Author:    vlivanov
Date:      2018-03-07 14:46 +0300
URL:       http://hg.openjdk.java.net/panama/dev/rev/0f55e34e273f

Fix repeated vector box expansion attempts.

! src/hotspot/share/opto/compile.cpp