Run All LLVM Passes

I've got a LLVM Module and I was wondering if there was an easy way to run all LLVM optimizations passes using the C++ API for -O3 (without having to register each pass individually).


Yes, you need to use the PassManagerBuilder class for it. You set the optimization level, and then ask it to populate a pass manager for you.

An easy way to see how it's done is to look at the source of opt.cpp in the LLVM repository - right here.

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