hg: shenandoah/jdk: Cherry-pick: 8203196: C1 emits incorrect code due to integer overflow in _tableswitch keys

[roman at kennke.org]

Changeset: 35e7a1986ab0
Author:    thartmann
Date:      2018-05-22 09:04 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/35e7a1986ab0

Cherry-pick: 8203196: C1 emits incorrect code due to integer overflow in _tableswitch keys

! src/hotspot/share/c1/c1_Instruction.hpp
! src/hotspot/share/c1/c1_LIRGenerator.cpp