Hi, > On Nov 15, 2016, at 5:17 PM, Ben Ng via swift-dev <swift-dev@swift.org> wrote: > > Good evening, folks. > > I’ve been working on a high-level SIL optimization pass that replaces an > application of the `+=` function with an application of `Array.concat(A: > Element)`. I’m blocked because I can’t figure out how to get a FuncRef to > `Array.append` from the SILTransform.
You could use SILModule::hasFunction(FunctionName, SILLinkage::PublicExternal) to get the SILFunction. The FunctionName should be a mangled name of your Array.concat(A:Element) function. > > I’ve tried getting the stdlib module from the ASTContext, and looking through > the visible decls, but the function that I want isn’t there. The next thing I > was going to try was recursively looking through the imports, but I thought > I’d stop to do a sanity check with the mailing list. > > It seems like even if I did succeed in getting a FuncRef to the generic > `Array.append`, I’d still need to figure out how to get the specialized > version, and add the appropriate declaration to the SIL. It also feels wrong > that I’m depending on stuff in the AST from a SILTransform. > You can just create the invocation of the generic version of Array.concat SILFunction (with a proper set of substitutions) and let the generic specializer produce a specialization for you. -Roman > Thanks, > > Ben > _______________________________________________ > swift-dev mailing list > swift-dev@swift.org > https://lists.swift.org/mailman/listinfo/swift-dev _______________________________________________ swift-dev mailing list swift-dev@swift.org https://lists.swift.org/mailman/listinfo/swift-dev
