Add -f[no-]address-sanitizer flag

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144800 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Driver/CC1Options.td b/include/clang/Driver/CC1Options.td
index ae97341..c8f4a1d 100644
--- a/include/clang/Driver/CC1Options.td
+++ b/include/clang/Driver/CC1Options.td
@@ -114,6 +114,8 @@
   HelpText<"The compilation directory to embed in the debug info.">;
 def dwarf_debug_flags : Separate<"-dwarf-debug-flags">,
   HelpText<"The string to embed in the Dwarf debug flags record.">;
+def faddress_sanitizer: Flag<"-faddress-sanitizer">,
+  HelpText<"Enable AddressSanitizer instrumentation (memory error detection)">;
 def fforbid_guard_variables : Flag<"-fforbid-guard-variables">,
   HelpText<"Emit an error if a C++ static local initializer would need a guard variable">;
 def g : Flag<"-g">, HelpText<"Generate source level debug information">;