search for: pass_registri

We have root caused the segfault - it was due to a caching layer we have in our code, which is to avoid duplicate compilations. Basically, llvm::JIT::getPointerToFunction() looks up PassRegistry, but as our change introduces a separate PassRegistry for each thread, this means that the thread that calls llvm::JIT::getPointerToFunction() should have appropriate PassRegistry setup. In our setup, some

Hi, We use LLVM libraries to compile C++ code and noticed slow downs when multiple threads of a process were compiling at once. *perf *indicated that most of the CPU time was spent in a spin lock, which was being locked/unlocked from llvm::PassRegistry::getPassInfo(). We read the relevant LLVM code and found out that PassRegistry is a ManagedStatic and is shared among all threads in case of a