[PATCH] D122298: [clang-cl] Ignore /Wv and /Wv:17 flags

[Tobias Hieta via Phabricator via llvm-commits]

thieta created this revision.
thieta added reviewers: hans, mstorsjo, rnk.
Herald added a project: All.
thieta requested review of this revision.
Herald added a reviewer: jdoerfert.
Herald added a subscriber: sstefan1.
Herald added a project: clang.

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


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D122298

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


Index: clang/test/Driver/cl-options.c
===================================================================
--- clang/test/Driver/cl-options.c
+++ 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 \
Index: clang/include/clang/Driver/Options.td
===================================================================
--- clang/include/clang/Driver/Options.td
+++ clang/include/clang/Driver/Options.td
@@ -2493,12 +2493,12 @@
   Group<f_Group>, Flags<[CC1Option, NoArgumentUnused, HelpHidden]>;
 def fno_openmp_assume_threads_oversubscription : Flag<["-"], "fno-openmp-assume-threads-oversubscription">,
   Group<f_Group>, Flags<[CC1Option, NoArgumentUnused, HelpHidden]>;
-def fopenmp_assume_no_thread_state : Flag<["-"], "fopenmp-assume-no-thread-state">, Group<f_Group>, 
-  Flags<[CC1Option, NoArgumentUnused, HelpHidden]>, 
+def fopenmp_assume_no_thread_state : Flag<["-"], "fopenmp-assume-no-thread-state">, Group<f_Group>,
+  Flags<[CC1Option, NoArgumentUnused, HelpHidden]>,
   HelpText<"Assert no thread in a parallel region modifies an ICV">,
   MarshallingInfoFlag<LangOpts<"OpenMPNoThreadState">>;
-def fopenmp_offload_mandatory : Flag<["-"], "fopenmp-offload-mandatory">, Group<f_Group>, 
-  Flags<[CC1Option, NoArgumentUnused]>, 
+def fopenmp_offload_mandatory : Flag<["-"], "fopenmp-offload-mandatory">, Group<f_Group>,
+  Flags<[CC1Option, NoArgumentUnused]>,
   HelpText<"Do not create a host fallback if offloading to the device fails.">,
   MarshallingInfoFlag<LangOpts<"OpenMPOffloadMandatory">>;
 defm openmp_target_new_runtime: BoolFOption<"openmp-target-new-runtime",
@@ -6528,6 +6528,7 @@
 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">;
@@ -6542,7 +6543,6 @@
 def _SLASH_Zo : CLIgnoredFlag<"Zo">;
 def _SLASH_Zo_ : CLIgnoredFlag<"Zo-">;
 
-
 // Unsupported:
 
 def _SLASH_await : CLFlag<"await">;


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