RFR: 8265956: JVM crashes when matching LShiftVB Node [v3]

[Xiaohong Gong]

On Sat, 8 May 2021 04:47:09 GMT, Xiaohong Gong <xgong at openjdk.org> wrote:

>> Wang Huang has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   fix bugs
>
> src/hotspot/cpu/x86/x86.ad line 5864:
> 
>> 5862:   match(Set dst (LShiftVB src (LShiftCntV shift)));
>> 5863:   match(Set dst (RShiftVB src (RShiftCntV shift)));
>> 5864:   match(Set dst (URShiftVB src (RShiftCntV shift)));
> 
> Regarding to this issue, it's no need to add these rules here. There is the vector shift rules already.

The same to all other rules added in this file.

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