[PATCH] D17259: [PM/AA] Teach the new pass manager to use pass-by-lambda for registering analysis passes, support pre-registering analyses, and use that to implement parsing and pre-registering a custom alias analysis pipeline.

[Pete Cooper via llvm-commits]

pete added a subscriber: pete.
pete added a comment.

So i'm not against the lambda's if they are required, but I can't really see why we need them instead of say, a function pointer?

Eg, instead of

  MAM.registerPass([&] { return FunctionAnalysisManagerModuleProxy(FAM); });

do

  MAM.registerPass(&FunctionAnalysisManagerModuleProxy)

Also, looks like the lambda (or function pointer), is being used to make sure we don't construct a pass twice.  Why not jus make that an error to register the same pass twice?  Is that something we can say is a condition of using the new pass manager?


http://reviews.llvm.org/D17259