diff --git a/lib/Support/ToolRunner.cpp b/lib/Support/ToolRunner.cpp
index f516986f133..6480c23cd8e 100644
--- a/lib/Support/ToolRunner.cpp
+++ b/lib/Support/ToolRunner.cpp
@@ -385,6 +385,9 @@ int GCC::ExecuteProgram(const std::string &ProgramFile,
     GCCArgs.push_back("-fno-strict-aliasing");
   } else {
     GCCArgs.push_back("assembler");
+#ifdef __APPLE__
+    GCCArgs.push_back("-force_cpusubtype_ALL");
+#endif
   }
   GCCArgs.push_back(ProgramFile.c_str());  // Specify the input filename...
   GCCArgs.push_back("-o");
diff --git a/tools/bugpoint/ToolRunner.cpp b/tools/bugpoint/ToolRunner.cpp
index f516986f133..6480c23cd8e 100644
--- a/tools/bugpoint/ToolRunner.cpp
+++ b/tools/bugpoint/ToolRunner.cpp
@@ -385,6 +385,9 @@ int GCC::ExecuteProgram(const std::string &ProgramFile,
     GCCArgs.push_back("-fno-strict-aliasing");
   } else {
     GCCArgs.push_back("assembler");
+#ifdef __APPLE__
+    GCCArgs.push_back("-force_cpusubtype_ALL");
+#endif
   }
   GCCArgs.push_back(ProgramFile.c_str());  // Specify the input filename...
   GCCArgs.push_back("-o");