r205598 - Add clang-cl alias to allow users to disable c4005

[Reid Kleckner]

Author: rnk
Date: Thu Apr  3 20:36:55 2014
New Revision: 205598

URL: http://llvm.org/viewvc/llvm-project?rev=205598&view=rev
Log:
Add clang-cl alias to allow users to disable c4005

If we ever want three or more aliases, at that point we should put MSVC
warning ids in DiagnosticGroups.td.  We can use that to support #pragma
warning.

Modified:
    cfe/trunk/include/clang/Driver/CLCompatOptions.td
    cfe/trunk/test/Driver/cl-options.c

Modified: cfe/trunk/include/clang/Driver/CLCompatOptions.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/CLCompatOptions.td?rev=205598&r1=205597&r2=205598&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/CLCompatOptions.td (original)
+++ cfe/trunk/include/clang/Driver/CLCompatOptions.td Thu Apr  3 20:36:55 2014
@@ -121,6 +121,8 @@ def _SLASH_WX : CLFlag<"WX">, HelpText<"
 def _SLASH_WX_ : CLFlag<"WX-">, HelpText<"Do not treat warnings as errors">,
   Alias<W_Joined>, AliasArgs<["no-error"]>;
 def _SLASH_w_flag : CLFlag<"w">, HelpText<"Disable all warnings">, Alias<w>;
+def _SLASH_wd4005 : CLFlag<"wd4005">, Alias<W_Joined>,
+  AliasArgs<["no-macro-redefined"]>;
 def _SLASH_vd : CLJoined<"vd">, HelpText<"Control vtordisp placement">,
   Alias<vtordisp_mode_EQ>;
 def _SLASH_Z7 : CLFlag<"Z7">, Alias<gline_tables_only>;

Modified: cfe/trunk/test/Driver/cl-options.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/cl-options.c?rev=205598&r1=205597&r2=205598&view=diff
==============================================================================
--- cfe/trunk/test/Driver/cl-options.c (original)
+++ cfe/trunk/test/Driver/cl-options.c Thu Apr  3 20:36:55 2014
@@ -129,6 +129,10 @@
 // WJoined: "-cc1"
 // WJoined: "-Wunused-pragmas"
 
+// For some warning ids, we can map from MSVC warning to Clang warning.
+// RUN: %clang_cl -wd4005 -### -- %s 2>&1 | FileCheck -check-prefix=wd4005 %s
+// wd4005: "-cc1"
+// wd4005: "-Wno-macro-redefined"
 
 // Ignored options. Check that we don't get "unused during compilation" errors.
 // (/Zs is for syntax-only)