[llvm] LowerTypeTests: Fix quadratic complexity (try 2). (PR #136053)

[Peter Collingbourne via llvm-commits]

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@@ -352,6 +352,27 @@ struct ScopedSaveAliaseesAndUsed {
   std::vector<std::pair<GlobalAlias *, Function *>> FunctionAliases;
   std::vector<std::pair<GlobalIFunc *, Function *>> ResolverIFuncs;
 
+  // This function only removes functions from llvm.used and llvm.compiler.used.
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pcc wrote:

The C++ standard doesn't use the term "method". I slightly prefer "function".

https://github.com/llvm/llvm-project/pull/136053