git: openjdk/mobile: 8236721: C2 should better optimize not-equal integer comparisons

[duke]

Changeset: f243173a
Author:    Tobias Hartmann <thartmann at openjdk.org>
Date:      2020-01-15 08:44:53 +0000
URL:       https://git.openjdk.java.net/mobile/commit/f243173a

8236721: C2 should better optimize not-equal integer comparisons

Narrow the type if an integer value is found to be unequal to it's lower/upper boundary.

Reviewed-by: roland, neliasso

! src/hotspot/share/opto/cfgnode.hpp
! src/hotspot/share/opto/ifnode.cpp
+ test/hotspot/jtreg/compiler/types/TestFoldNECompares.java