hg: jdk8u/jdk8u-dev/hotspot: 8203196: C1 emits incorrect code due to integer overflow in _tableswitch keys

[felix.yang at huawei.com]

Changeset: 08e60f55c416
Author:    thartmann
Date:      2018-05-22 09:04 +0200
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/08e60f55c416

8203196: C1 emits incorrect code due to integer overflow in _tableswitch keys
Summary: Avoid integer overflow in TableSwitch().
Reviewed-by: goetz, mdoerr, vlivanov

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