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Hi Son, I have an answer to your first question: 1, What are the differences between *LegacyPassManager* and *PassManager*? > I see that *opt* uses the former most of the times while the latter is > used via *PassBuilder* API when an user wants to build her own pipeline, > but I have no idea why so. What to use and when to use it is not clear to > me. > PassManager is the result

Hello all, I have 2 separate questions: 1, What are the differences between *LegacyPassManager* and *PassManager*? I see that *opt* uses the former most of the times while the latter is used via *PassBuilder* API when an user wants to build her own pipeline, but I have no idea why so. What to use and when to use it is not clear to me. 2, I've asked this question once but have had no answer,

...es and passes, I'd > suggest doing so against the new PM, especially if you plan on upstreaming > your work. > > Cheers, > Philip > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20180418/df2fa3b6/attachment.html>