RFR: 8338021: Support new unsigned and saturating vector operators in VectorAPI [v24]

[Paul Sandoz]

On Tue, 15 Oct 2024 10:19:46 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

> Are there any IR rules that verify that the correct C2 nodes are used? Is that a thing you generally do with the VectorAPI, just to make sure things get correctly intrinsified?

Not systematically. We have some IR testing for more complex areas, located under `test/hotspot/jtreg/compiler/vectorapi/`. When we started out testing there was no IR testing framework so we relied on classic unit tests running a test N times for C2 to kick in. That is still the case for the majority of tests. It would be nice to have a better balance, and a way to systematically generate IR tests for the various vector operations.

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PR Comment: https://git.openjdk.org/jdk/pull/20507#issuecomment-2415212261