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

[Doug Simon]

On Wed, 22 Feb 2023 05:21:48 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> That said, I think it is reasonable on a given JVM invocation if Float.floatToFloat16(f) gave the same result for input f regardless of in what context it was called.

Yes, I'm under the impression that for math API methods like this, the stability of input to output must be preserved for a single JVM invocation. Or are there existing methods for which the interpreter and compiled code execution is allowed to differ?

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PR: https://git.openjdk.org/jdk/pull/12704