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[clang][driver] Add -foperator-names 

This patch adds the command line option -foperator-names which acts as the opposite of -fno-operator-names. With this command line option it is possible to reenable C++ operator keywords on the command line if -fno-operator-names had previously been passed.

Differential Revision: https://reviews.llvm.org/D103749
This commit is contained in:
Markus Böck 2021-06-10 17:01:13 +02:00
parent 49eba8bf17
commit 9833b57981
3 changed files with 15 additions and 4 deletions
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7
clang/include/clang/Driver/Options.td
View File

@ -2221,9 +2221,10 @@ def fno_ms_compatibility : Flag<["-"], "fno-ms-compatibility">, Group<f_Group>,
def fno_objc_legacy_dispatch : Flag<["-"], "fno-objc-legacy-dispatch">, Group<f_Group>;
def fno_objc_weak : Flag<["-"], "fno-objc-weak">, Group<f_Group>, Flags<[CC1Option]>;
def fno_omit_frame_pointer : Flag<["-"], "fno-omit-frame-pointer">, Group<f_Group>;
def fno_operator_names : Flag<["-"], "fno-operator-names">, Group<f_Group>,
HelpText<"Do not treat C++ operator name keywords as synonyms for operators">,
Flags<[CC1Option]>, MarshallingInfoNegativeFlag<LangOpts<"CXXOperatorNames">, cplusplus.KeyPath>;
defm operator_names : BoolFOption<"operator-names",
LangOpts<"CXXOperatorNames">, Default<cplusplus.KeyPath>,
NegFlag<SetFalse, [CC1Option], "Do not treat C++ operator name keywords as synonyms for operators">,
PosFlag<SetTrue>>;
def fdiagnostics_absolute_paths : Flag<["-"], "fdiagnostics-absolute-paths">, Group<f_Group>,
Flags<[CC1Option, CoreOption]>, HelpText<"Print absolute paths in diagnostics">,
MarshallingInfoFlag<DiagnosticOpts<"AbsolutePath">>;

5
clang/lib/Driver/ToolChains/Clang.cpp
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@ -5654,11 +5654,14 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
Args.AddLastArg(CmdArgs, options::OPT_ftlsmodel_EQ);
if (Args.hasFlag(options::OPT_fno_operator_names,
options::OPT_foperator_names, false))
CmdArgs.push_back("-fno-operator-names");
// Forward -f (flag) options which we can pass directly.
Args.AddLastArg(CmdArgs, options::OPT_femit_all_decls);
Args.AddLastArg(CmdArgs, options::OPT_fheinous_gnu_extensions);
Args.AddLastArg(CmdArgs, options::OPT_fdigraphs, options::OPT_fno_digraphs);
Args.AddLastArg(CmdArgs, options::OPT_fno_operator_names);
Args.AddLastArg(CmdArgs, options::OPT_femulated_tls,
options::OPT_fno_emulated_tls);

7
clang/test/Driver/cxx-operator-names.cpp Normal file
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@ -0,0 +1,7 @@
// RUN: %clang -### -S -foperator-names -fno-operator-names %s 2>&1 | \
// RUN: FileCheck -check-prefix=CHECK-1 %s
// CHECK-1: "-fno-operator-names"
// RUN: %clang -### -S -fno-operator-names -foperator-names %s 2>&1 | \
// RUN: FileCheck -check-prefix=CHECK-2 %s
// CHECK-2-NOT: "-fno-operator-names"