hg: jdk8u/jdk8u-dev/hotspot: 8134739: compiler/loopopts/superword/TestVectorizationWithInvariant crashes in loop opts

[rwestrel at redhat.com]

Changeset: ce42ae95d4d6
Author:    thartmann
Date:      2019-10-08 15:38 +0200
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/ce42ae95d4d6

8134739: compiler/loopopts/superword/TestVectorizationWithInvariant crashes in loop opts
Summary: Bail out of superword optimization if loop was removed (i.e., if zero-trip Opaque1Node was removed).
Reviewed-by: kvn, roland

! src/share/vm/opto/loopnode.hpp
! src/share/vm/opto/superword.cpp