[clang] 67d9276 - [clang-cl] Ignore /Wv and /Wv:17 flags

[Tobias Hieta via cfe-commits]

Author: Tobias Hieta
Date: 2022-03-24T09:42:34+01:00
New Revision: 67d9276b16024bae66dfc2fcb739d947637b8c52

URL: https://github.com/llvm/llvm-project/commit/67d9276b16024bae66dfc2fcb739d947637b8c52
DIFF: https://github.com/llvm/llvm-project/commit/67d9276b16024bae66dfc2fcb739d947637b8c52.diff

LOG: [clang-cl] Ignore /Wv and /Wv:17 flags

MSVC supports passing /Wv and /Wv:17 to ignore warnings added
since that version. Clang doesn't have a option like this - but
we can ignore this flag instead of error.

MSVC documentation: https://docs.microsoft.com/en-us/cpp/build/reference/compiler-option-warning-level

Reviewed By: hans, mstorsjo

Differential Revision: https://reviews.llvm.org/D122298

Added: 
    

Modified: 
    clang/include/clang/Driver/Options.td
    clang/test/Driver/cl-options.c

Removed: 
    


################################################################################
diff  --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index b5bd2d6c3e1bd..114b230b39e8f 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -6530,6 +6530,7 @@ def _SLASH_sdl_ : CLIgnoredFlag<"sdl-">;
 def _SLASH_utf8 : CLIgnoredFlag<"utf-8">,
   HelpText<"Set source and runtime encoding to UTF-8 (default)">;
 def _SLASH_w : CLIgnoredJoined<"w">;
+def _SLASH_Wv_ : CLIgnoredJoined<"Wv">;
 def _SLASH_Zc___cplusplus : CLIgnoredFlag<"Zc:__cplusplus">;
 def _SLASH_Zc_auto : CLIgnoredFlag<"Zc:auto">;
 def _SLASH_Zc_forScope : CLIgnoredFlag<"Zc:forScope">;

diff  --git a/clang/test/Driver/cl-options.c b/clang/test/Driver/cl-options.c
index f332cd83b26e4..244b4430dd0dc 100644
--- a/clang/test/Driver/cl-options.c
+++ b/clang/test/Driver/cl-options.c
@@ -396,6 +396,8 @@
 // RUN:    /volatile:iso \
 // RUN:    /w12345 \
 // RUN:    /wd1234 \
+// RUN:    /Wv \
+// RUN:    /Wv:17 \
 // RUN:    /Zc:__cplusplus \
 // RUN:    /Zc:auto \
 // RUN:    /Zc:forScope \