Index: COFF/Config.h
===================================================================
--- COFF/Config.h
+++ COFF/Config.h
@@ -33,6 +33,7 @@
 static const auto AMD64 = llvm::COFF::IMAGE_FILE_MACHINE_AMD64;
 static const auto ARMNT = llvm::COFF::IMAGE_FILE_MACHINE_ARMNT;
 static const auto I386 = llvm::COFF::IMAGE_FILE_MACHINE_I386;
+static const auto ARM64 = llvm::COFF::IMAGE_FILE_MACHINE_ARM64;
 
 // Represents an /export option.
 struct Export {
@@ -73,7 +74,7 @@
 // Global configuration.
 struct Configuration {
   enum ManifestKind { SideBySide, Embed, No };
-  bool is64() { return Machine == AMD64; }
+  bool is64() { return Machine == AMD64 || Machine == ARM64; }
 
   llvm::COFF::MachineTypes Machine = IMAGE_FILE_MACHINE_UNKNOWN;
   bool Verbose = false;