RFR: 6506405: Math.abs(float) is slow

Wed Jul 7 20:36:01 UTC 2021

On Wed, 7 Jul 2021 20:28:37 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

> Please consider this change to make the `float` and `double` versions of `java.lang.Math.abs()` branch-free.

With this change there is no measurable effect on performance on macOS, but on Linux there is approximately a 10% throughput improvement.

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PR: https://git.openjdk.java.net/jdk/pull/4711