Unlike miscompilations, reducing compiler crashes to a minimal test case is a straightforward process, which always follows the same general approach, and is supported by high-quality reduction tooling. However, I don’t think the entire process (and some of the edge cases) is documented anywhere, so I am trying to remedy that. Prerequisites To reduce LLVM crashes, it is strongly recommended to use an assertion-enabled build of LLVM (using -DLLVM_ENABLE_ASSERTIONS=true). You do not need (or ...
