https://bugzilla.kernel.org/show_bug.cgi?id=205069
--- Comment #5 from freddyreimer@comcast.net --- I've seen another report on a similar issue, where the suggestion (solution?) was to be using a newer mesa and llvm. I am on llvm 9 and mesa 19.2.0
* media-libs/mesa Latest version available: 19.2.0 Latest version installed: 19.2.0_rc4
* sys-devel/llvm Latest version available: 9.0.0 Latest version installed: 9.0.0