RFR: 8291048: x86: compiler/c2/irTests/TestAutoVectorization2DArray.java fails with lower SSE

[Jie Fu]

On Tue, 26 Jul 2022 17:24:38 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> [JDK-8289801](https://bugs.openjdk.org/browse/JDK-8289801) whitelisted the UseSSE/UseAVX flags, but missed update in the test. So when we test x86_32 with lower SSE, it fails, as no `LoadVector`/etc nodes are getting emitted.
> 
> Additional testing: 
>  - [x] Linux x86_32 fastdebug `c2/irTests` with `-XX:UseAVX=0 -XX:UseSSE=0` (now passes)
>  - [x] Linux x86_32 fastdebug `c2/irTests` with `-XX:UseAVX=0 -XX:UseSSE=1` (now passes)
>  - [x] Linux x86_32 fastdebug `c2/irTests` with `-XX:UseAVX=0 -XX:UseSSE=2` (still passes)
>  - [x] Linux x86_32 fastdebug `c2/irTests` default (still passes)
>  - [x] Linux x86_64 fastdebug `c2/irTests` with `-XX:UseAVX=0 -XX:UseSSE=0` (still passes)
>  - [x] Linux x86_64 fastdebug `c2/irTests` with `-XX:UseAVX=0 -XX:UseSSE=1` (still passes)
>  - [x] Linux x86_64 fastdebug `c2/irTests` with `-XX:UseAVX=0 -XX:UseSSE=2` (still passes)
>  - [x] Linux x86_64 fastdebug `c2/irTests` default (still passes)

Marked as reviewed by jiefu (Reviewer).

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PR: https://git.openjdk.org/jdk/pull/9646