tree 0c4c5f39ac6971a9d078f10c523ea30d33491de8
parent 460965bc49729917e7931b4b0f4d6de71bd61ff9
author Googler <noreply@google.com> 1556031332 -0700
committer Copybara-Service <copybara-worker@google.com> 1556031394 -0700

When trimming BuildOptions, return the same instance if there are no changes.

On a typical build, thousands of value-equal BuildOptions instances are being created. In addition to consuming memory, this is causing BuildOptions to go through its (relatively expensive) hashCode/fingerprint initialization many times.

An added bonus comes from not calling toString on the FragmentOptions instance, which requires reflectively iterating over all of its options fields.

PiperOrigin-RevId: 244853750