Add -mstack-alignment=X and fix -mstackrealign handling now that the
backend options are gone.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145868 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Driver/CC1Options.td b/include/clang/Driver/CC1Options.td
index 6525d24..172424e 100644
--- a/include/clang/Driver/CC1Options.td
+++ b/include/clang/Driver/CC1Options.td
@@ -200,6 +200,8 @@
   HelpText<"Set the default structure layout to be compatible with the Microsoft compiler standard.">;
 def mstackrealign : Flag<"-mstackrealign">,
   HelpText<"Force realign the stack at entry to every function.">;
+def mstack_alignment : Joined<"-mstack-alignment=">,
+  HelpText<"Set the stack alignment">;
 def mlink_bitcode_file : Separate<"-mlink-bitcode-file">,
   HelpText<"Link the given bitcode file before performing optimizations.">;
 def O : Joined<"-O">, HelpText<"Optimization level">;