(In reply to Michel Dänzer from comment #4) > Which versions of Mesa & LLVM are you using? My sincere apologies, I neglected to include the version of Mesa et al. Unfortunately, it was reading comprehension that failed me, not attention or due diligence. Here's what's installed: libdrm Git master, commit 9e34ad590e0e1003a597b8cc790a3f36830ba993, merged 1/31/2018. libclc Git master, commit 13541fc0c779cbadbda793c67a0402558ff92ab6, merged 1/31/2018. Mesa Git master, commit bbef9474fa52d9aba06eeede52558fc5ccb762dd, merged 1/31/2018. Hopefully this now makes my answer complete enough, and again, apologies for the delay.