diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -3070,7 +3070,8 @@
       llvm::Triple TT(A->getValue(i));
 
       if (TT.getArch() == llvm::Triple::UnknownArch ||
-          !(TT.getArch() == llvm::Triple::ppc ||
+          !(TT.getArch() == llvm::Triple::aarch64 ||
+            TT.getArch() == llvm::Triple::ppc ||
             TT.getArch() == llvm::Triple::ppc64 ||
             TT.getArch() == llvm::Triple::ppc64le ||
             TT.getArch() == llvm::Triple::nvptx ||