[clang-tools-extra] [clangd] Add feature modules registry (PR #153756)

[Aleksandr Platonov via cfe-commits]

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@@ -1017,6 +1017,13 @@ clangd accepts flags on the commandline, and in the CLANGD_FLAGS environment var
                : static_cast<int>(ErrorResultCode::CheckFailed);
   }
 
+  FeatureModuleSet ModuleSet;
+  for (FeatureModuleRegistry::entry E : FeatureModuleRegistry::entries()) {
+    vlog("Adding feature module '{0}' ({1})", E.getName(), E.getDesc());
+    ModuleSet.add(E.instantiate());
+  }
+  Opts.FeatureModules = &ModuleSet;
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ArcsinX wrote:

Done

https://github.com/llvm/llvm-project/pull/153756