diff --git a/llvm/lib/Object/MachOObjectFile.cpp b/llvm/lib/Object/MachOObjectFile.cpp
--- a/llvm/lib/Object/MachOObjectFile.cpp
+++ b/llvm/lib/Object/MachOObjectFile.cpp
@@ -57,12 +57,6 @@
 
 } // end anonymous namespace
 
-static const std::array<StringRef, 17> validArchs = {
-    "i386",   "x86_64", "x86_64h",  "armv4t",  "arm",    "armv5e",
-    "armv6",  "armv6m", "armv7",    "armv7em", "armv7k", "armv7m",
-    "armv7s", "arm64",  "arm64_32", "ppc",     "ppc64",
-};
-
 static Error malformedError(const Twine &Msg) {
   return make_error<GenericBinaryError>("truncated or malformed object (" +
                                             Msg + ")",
@@ -2724,11 +2718,19 @@
 }
 
 bool MachOObjectFile::isValidArch(StringRef ArchFlag) {
-  return std::find(validArchs.cbegin(), validArchs.cend(), ArchFlag) !=
-         validArchs.cend();
+  auto validArchs = getValidArchs();
+  return llvm::find(validArchs, ArchFlag) != validArchs.end();
 }
 
-ArrayRef<StringRef> MachOObjectFile::getValidArchs() { return validArchs; }
+ArrayRef<StringRef> MachOObjectFile::getValidArchs() {
+  static const std::array<StringRef, 17> validArchs = {
+      "i386",   "x86_64", "x86_64h",  "armv4t",  "arm",    "armv5e",
+      "armv6",  "armv6m", "armv7",    "armv7em", "armv7k", "armv7m",
+      "armv7s", "arm64",  "arm64_32", "ppc",     "ppc64",
+  };
+
+  return validArchs;
+}
 
 Triple::ArchType MachOObjectFile::getArch() const {
   return getArch(getCPUType(*this));