Public bug reported:
1. llvm 9 has been released, but mesa in the repo still uses llvm 8.
2. llvm 9 bitcode libs for OpenCL cause llvm-8-based mesa to fail because their
file format has changed
3. There was a bug in llvm-8-based mesa in disco that caused the OpenCL
compiler to hang on the kernels combining hyperbolic and circular functions.
There were no hang after I have rebuilt mesa and dri against llvm-10.
** Affects: mesa (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1846053
Title:
Use llvm 9 or even llvm-10
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