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Hello llvm-dev, I'm currently integrating an experimental instruction scheduler into LLVM and have come upon a point of confusion regarding WAW dependencies. I apologize in advance for the unnecessarily convoluted example, but it's one solid case which fails on my scheduler and where I can get LLVM to produce a graph that shows my question clearly. I have a small piece of code like this

Hello llvm-dev, I'm doing some experimentation on instruction scheduling and would like to use LLVM as a testbed, by integrating our existing (compiler-agnostic) scheduler into it. I have tinkered enough with the LLVM code to know how to create and run a new scheduler, access the DAG and target info, etc. However, I've come upon some questions that I have been unable to answer so far, and