RFR: 8302976: C2 intrinsification of Float.floatToFloat16 and Float.float16ToFloat yields different result than the interpreter

Tue Mar 7 01:29:13 UTC 2023

On Tue, 7 Mar 2023 00:52:37 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

> Note, I removed `ConvF2HFNode::Identity()` optimization because tests show that it produces different NaN results due to skipped conversion.

Yes, removing the Identity optimization is correct.  It doesn't hold for NaN inputs.

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PR: https://git.openjdk.org/jdk/pull/12869