1 files changed, 11 insertions, 0 deletions
diff --git a/clang/lib/Driver/ToolChain.cpp b/clang/lib/Driver/ToolChain.cpp
index 4f90d083c7d..d2c2d55dfbf 100644
--- a/clang/lib/Driver/ToolChain.cpp
+++ b/clang/lib/Driver/ToolChain.cpp
@@ -221,6 +221,17 @@ std::string ToolChain::ComputeLLVMTriple(const ArgList &Args,
     }
     return Triple.getTriple();
   }
+  case llvm::Triple::aarch64: {
+    llvm::Triple Triple = getTriple();
+    if (!Triple.isOSBinFormatMachO())
+      return getTripleString();
+
+    // FIXME: older versions of ld64 expect the "arm64" component in the actual
+    // triple string and query it to determine whether an LTO file can be
+    // handled. Remove this when we don't care any more.
+    Triple.setArchName("arm64");
+    return Triple.getTriple();
+  }
   case llvm::Triple::arm:
   case llvm::Triple::armeb:
   case llvm::Triple::thumb: