Index: clang/lib/Sema/SemaDecl.cpp
===================================================================
--- clang/lib/Sema/SemaDecl.cpp
+++ clang/lib/Sema/SemaDecl.cpp
@@ -9596,7 +9596,7 @@
     // FIXME: We need a better way to separate C++ standard and clang modules.
     bool ImplicitInlineCXX20 = !getLangOpts().CPlusPlusModules ||
                                !NewFD->getOwningModule() ||
-                               NewFD->getOwningModule()->isGlobalModule() ||
+                               // NewFD->getOwningModule()->isGlobalModule() ||
                                NewFD->getOwningModule()->isHeaderLikeModule();
     bool isInline = D.getDeclSpec().isInlineSpecified();
     bool isVirtual = D.getDeclSpec().isVirtualSpecified();
Index: clang/lib/Sema/SemaLookup.cpp
===================================================================
--- clang/lib/Sema/SemaLookup.cpp
+++ clang/lib/Sema/SemaLookup.cpp
@@ -1569,6 +1569,7 @@
 
 /// Determine if we could use all the declarations in the module.
 bool Sema::isUsableModule(const Module *M) {
+  return true;
   assert(M && "We shouldn't check nullness for module here");
   // Return quickly if we cached the result.
   if (UsableModuleUnitsCache.count(M))