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Hi Alexandre, Sorry I missed this -- I was on vacation when you sent this. SCEVExpander already has an IRBuilder in it but AFAICT it isn't exposed as a public interface. I'd be fine if you wanted to expose a public `GetIRBuilder()` accessor that let a SCEVExpander client use the same IRBuilder as SCEVExpander. -- Sanjoy On Fri, Apr 6, 2018 at 10:55 AM, Alexandre Isoard via llvm-dev

Hello, I use SCEVExpander and IRBuilder to generate some code and I frequently end-up breaking dominance because the SCEVExpander insertion point and the IRBuilder insertion point do not advance in synchrony. Ideally, I could build a SCEVExpander based on an existing IRBuilder (so that they move each other). Or even better, SCEVExpander inherit from IRBuilder and basically extend it with SCEV

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