Driver: Ignore -force_cpusubtype_ALL.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119803 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 60d2fe3..338c541 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -840,6 +840,9 @@
         }
       }
     }
+
+    // Also ignore explicit -force_cpusubtype_ALL option.
+    (void) Args.hasArg(options::OPT_force__cpusubtype__ALL);
   } else if (isa<PrecompileJobAction>(JA)) {
     // Use PCH if the user requested it.
     bool UsePCH = D.CCCUsePCH;