Loop ID

[edeiana]

Created a new pass that sets the ID for every loop as metadata. Created functionality to add ,set, get loop ID metadata in LoopStructure. Changed behavior of users of loop ID, since it is now an std::optional.

[scampanoni]

Good job Enrico and thank you for doing the work.

I have only the next two comments.

Having both addID and setID for LoopStructure is confusing. Can we have only setID with the semantics of

• if ID doesn't exist in the metadata, then add it
• if ID does exist, then reset it to the parameter value

Why does the new module loop_id needs the headers of HELIX, DOALL, DSWP, parallelization_technique, heuristics, loop_distribution, and talkdown?

[edeiana]

Changes based on feedback.