[clang] Expose -f(no-)strict-overflow as a clang-cl option (llvm#126512)

Also move the -fno-strict-overflow option definition next to the
-fstrict-overflow one while here.

Also add test coverage for f(no-)wrapv-pointer being a clang-cl option.

Author: nico

clang/include/clang/Driver/Options.td

@@ -3421,8 +3421,6 @@ def fno_strict_aliasing : Flag<["-"], "fno-strict-aliasing">, Group<f_Group>,
 def fstruct_path_tbaa : Flag<["-"], "fstruct-path-tbaa">, Group<f_Group>;
 def fno_struct_path_tbaa : Flag<["-"], "fno-struct-path-tbaa">, Group<f_Group>;
 def fno_strict_enums : Flag<["-"], "fno-strict-enums">, Group<f_Group>;
-def fno_strict_overflow : Flag<["-"], "fno-strict-overflow">, Group<f_Group>,
-  Visibility<[ClangOption, FlangOption]>;
 defm init_global_zero : BoolOptionWithoutMarshalling<"f", "init-global-zero",
   PosFlag<SetTrue, [], [FlangOption, FC1Option],
           "Zero initialize globals without default initialization (default)">,
@@ -3934,7 +3932,9 @@ defm strict_vtable_pointers : BoolFOption<"strict-vtable-pointers",
             " overwriting polymorphic C++ objects">,
   NegFlag<SetFalse>>;
 def fstrict_overflow : Flag<["-"], "fstrict-overflow">, Group<f_Group>,
-  Visibility<[ClangOption, FlangOption]>;
+  Visibility<[ClangOption, CLOption, FlangOption]>;
+def fno_strict_overflow : Flag<["-"], "fno-strict-overflow">, Group<f_Group>,
+  Visibility<[ClangOption, CLOption, FlangOption]>;
 def fpointer_tbaa : Flag<["-"], "fpointer-tbaa">, Group<f_Group>;
 def fdriver_only : Flag<["-"], "fdriver-only">, Flags<[NoXarchOption]>,
   Visibility<[ClangOption, CLOption, DXCOption]>,

clang/test/Driver/cl-options.c

@@ -738,9 +738,13 @@
 // RUN:     -fno-modules-search-all \
 // RUN:     -fimplicit-modules \
 // RUN:     -fno-implicit-modules \
+// RUN:     -fstrict-overflow \
+// RUN:     -fno-strict-overflow \
 // RUN:     -ftrivial-auto-var-init=zero \
 // RUN:     -fwrapv \
 // RUN:     -fno-wrapv \
+// RUN:     -fwrapv-pointer \
+// RUN:     -fno-wrapv-pointer \
 // RUN:     --version \
 // RUN:     -Werror /Zs -- %s 2>&1