hg: shenandoah/jdk10/hotspot: take advantage of GraphKit::must_be_not_null() for non null arguments to intrinsics

[rwestrel at redhat.com]

Changeset: cc4d5827a3ff
Author:    roland
Date:      2017-07-26 15:14 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk10/hotspot/rev/cc4d5827a3ff

take advantage of GraphKit::must_be_not_null() for non null arguments to intrinsics

! src/share/vm/opto/library_call.cpp