RFR: JDK-8331859 : [PPC64] Remove support for Power7 and older [v10]

[Martin Doerr]

On Thu, 15 May 2025 15:36:09 GMT, Suchismith Roy <sroy at openjdk.org> wrote:

> > d with -XX:-SuperwordUseVSX.
> 
> Any particular set of tests that rely on Superword optimisation ?

At least the following tests should still work:
`make run-test TEST=jtreg:compiler/c2 JTREG="VM_OPTIONS=-XX:-SuperwordUseVSX"`
We need to support -XX:-SuperwordUseVSX as workaround for vector bugs.

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PR Comment: https://git.openjdk.org/jdk/pull/20262#issuecomment-2884335346