RFR: 8256267: Relax compiler/floatingpoint/NaNTest.java for x86_32 and lower -XX:+UseSSE [v2]

[Aleksey Shipilev]

On Mon, 23 Nov 2020 16:01:25 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

> What I meant is to run tests only if SSE is used:
> 
> ```
> if (expectStableFloats) {
>     testFloat();
> }
> if (expectStableDoubles) {
>     testDouble();
> }
> ```

Sure, if you want. See the update. x86_32 is currently broken by Foreign Linker integration, so I have not rebased to current master. New commit still fixes x86_32 failure on this test.

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PR: https://git.openjdk.java.net/jdk/pull/1187