1 files changed, 4 insertions, 0 deletions
diff --git a/clang/lib/AST/ASTContext.cpp b/clang/lib/AST/ASTContext.cpp
index c085f52cae3..648fa9f0fbc 100644
--- a/clang/lib/AST/ASTContext.cpp
+++ b/clang/lib/AST/ASTContext.cpp
@@ -9734,6 +9734,10 @@ bool ASTContext::DeclMustBeEmitted(const Decl *D) {
     return true;
 
   if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
+    // Multiversioned functions always have to be emitted, because they are used
+    // by the resolver.
+    if (FD->isMultiVersion())
+      return true;
     // Forward declarations aren't required.
     if (!FD->doesThisDeclarationHaveABody())
       return FD->doesDeclarationForceExternallyVisibleDefinition();