RFR: 8265956: JVM crashes when matching LShiftVB Node [v4]

[Xiaohong Gong]

On Sat, 8 May 2021 08:12:49 GMT, Wang Huang <whuang at openjdk.org> wrote:

>> It is fount that the rule `match(Set dst (LShiftVB src shift))` is missing on many cpus, such like `aarch64` and `x86`. It is this reason that JVM will crash under `JDK-8265956`'s test case. In this commit, I :
>> * show the crash case `TestVectorShuffleIotaShort`
>> * solve the issue on `aarch64` and `x86` by adding the rule. 
>> * test after fixing on tire1~3
>> 
>> Thank you for your review. Any suggestion is welcome. 
>>                          Wang Huang
>
> Wang Huang has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - update copyright years
>  - remove x86's adfile

src/hotspot/share/opto/vectorIntrinsics.cpp line 2:

> 1: /*
> 2:  * Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.

Should be "2020, 2021" since it is not a new file.

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PR: https://git.openjdk.java.net/jdk/pull/3747