This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGdfb558b82d3f: [clang][cli] Port LangOpts to marshalling
system, pt.2 (authored by jansvoboda11).
Changed prior to commit:
https://reviews.llvm.org/D95347?vs=318961&id=319491#toc
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D95347/new/
https://reviews.llvm.org/D95347
Files:
clang/include/clang/Driver/Options.td
clang/lib/Frontend/CompilerInvocation.cpp
Index: clang/lib/Frontend/CompilerInvocation.cpp
===================================================================
--- clang/lib/Frontend/CompilerInvocation.cpp
+++ clang/lib/Frontend/CompilerInvocation.cpp
@@ -432,6 +432,9 @@
if (LangOpts.AppleKext && !LangOpts.CPlusPlus)
Diags.Report(diag::warn_c_kext);
+ if (Args.hasArg(OPT_fconcepts_ts))
+ Diags.Report(diag::warn_fe_concepts_ts_flag);
+
if (LangOpts.NewAlignOverride &&
!llvm::isPowerOf2_32(LangOpts.NewAlignOverride)) {
Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ);
@@ -2076,11 +2079,6 @@
// OpenCL has half keyword
Opts.Half = Opts.OpenCL;
-
- // C++ has wchar_t keyword.
- Opts.WChar = Opts.CPlusPlus;
-
- Opts.AlignedAllocation = Opts.CPlusPlus17;
}
/// Check if input file kind and language standard are compatible.
@@ -2356,47 +2354,16 @@
Opts.SYCLIsDevice ||
Args.hasArg(OPT_fconvergent_functions);
- Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
- Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
- Opts.Char8 = Args.hasFlag(OPT_fchar8__t, OPT_fno_char8__t, Opts.CPlusPlus20);
Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
if (!Opts.NoBuiltin)
getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
- Opts.AlignedAllocation =
- Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation,
- Opts.AlignedAllocation);
- Opts.AlignedAllocationUnavailable =
- Opts.AlignedAllocation && Args.hasArg(OPT_aligned_alloc_unavailable);
- if (Args.hasArg(OPT_fconcepts_ts))
- Diags.Report(diag::warn_fe_concepts_ts_flag);
- Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
Opts.LongDoubleSize = Args.hasArg(OPT_mlong_double_128)
? 128
: Args.hasArg(OPT_mlong_double_64) ? 64 : 0;
- Opts.EnableAIXExtendedAltivecABI = Args.hasArg(OPT_mabi_EQ_vec_extabi);
- Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
- Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
- || Args.hasArg(OPT_fdump_record_layouts);
if (Opts.FastRelaxedMath)
Opts.setDefaultFPContractMode(LangOptions::FPM_Fast);
- Opts.XLPragmaPack = Args.hasArg(OPT_fxl_pragma_pack);
llvm::sort(Opts.ModuleFeatures);
- Opts.ArmSveVectorBits =
- getLastArgIntValue(Args, options::OPT_msve_vector_bits_EQ, 0, Diags);
-
- // __declspec is enabled by default for the PS4 by the driver, and also
- // enabled for Microsoft Extensions or Borland Extensions, here.
- //
- // FIXME: __declspec is also currently enabled for CUDA, but isn't really a
- // CUDA extension. However, it is required for supporting
- // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has
- // been rewritten in terms of something more generic, remove the Opts.CUDA
- // term here.
- Opts.DeclSpecKeyword =
- Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec,
- (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA));
-
// -mrtd option
if (Arg *A = Args.getLastArg(OPT_mrtd)) {
if (Opts.getDefaultCallingConv() != LangOptions::DCC_None)
@@ -2519,11 +2486,6 @@
Opts.OpenMPIsDevice && (T.isNVPTX() || T.isAMDGCN()) &&
Args.hasArg(options::OPT_fopenmp_cuda_force_full_runtime);
- // Record whether the __DEPRECATED define was requested.
- Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
- OPT_fno_deprecated_macro,
- Opts.Deprecated);
-
// FIXME: Eliminate this dependency.
unsigned Opt = getOptimizationLevel(Args, IK, Diags),
OptSize = getOptimizationLevelSize(Args);
@@ -2554,20 +2516,6 @@
Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
}
- LangOptions::FPExceptionModeKind FPEB = LangOptions::FPE_Ignore;
- if (Arg *A = Args.getLastArg(OPT_ffp_exception_behavior_EQ)) {
- StringRef Val = A->getValue();
- if (Val.equals("ignore"))
- FPEB = LangOptions::FPE_Ignore;
- else if (Val.equals("maytrap"))
- FPEB = LangOptions::FPE_MayTrap;
- else if (Val.equals("strict"))
- FPEB = LangOptions::FPE_Strict;
- else
- Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
- }
- Opts.setFPExceptionMode(FPEB);
-
// Parse -fsanitize= arguments.
parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
Diags, Opts.Sanitize);
@@ -2643,16 +2591,6 @@
}
}
}
-
- std::string ThreadModel =
- std::string(Args.getLastArgValue(OPT_mthread_model, "posix"));
- if (ThreadModel != "posix" && ThreadModel != "single")
- Diags.Report(diag::err_drv_invalid_value)
- << Args.getLastArg(OPT_mthread_model)->getAsString(Args) << ThreadModel;
- Opts.setThreadModel(
- llvm::StringSwitch<LangOptions::ThreadModelKind>(ThreadModel)
- .Case("posix", LangOptions::ThreadModelKind::POSIX)
- .Case("single", LangOptions::ThreadModelKind::Single));
}
static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) {
Index: clang/include/clang/Driver/Options.td
===================================================================
--- clang/include/clang/Driver/Options.td
+++ clang/include/clang/Driver/Options.td
@@ -436,11 +436,13 @@
// Key paths that are constant during parsing of options with the same key path prefix.
defvar cplusplus = LangOpts<"CPlusPlus">;
defvar cpp11 = LangOpts<"CPlusPlus11">;
+defvar cpp17 = LangOpts<"CPlusPlus17">;
defvar cpp20 = LangOpts<"CPlusPlus20">;
defvar c99 = LangOpts<"C99">;
defvar c2x = LangOpts<"C2x">;
defvar lang_std = LangOpts<"LangStd">;
defvar open_cl = LangOpts<"OpenCL">;
+defvar cuda = LangOpts<"CUDA">;
defvar render_script = LangOpts<"RenderScript">;
defvar hip = LangOpts<"HIP">;
defvar gnu_mode = LangOpts<"GNUMode">;
@@ -993,8 +995,10 @@
LangOpts<"ApplePragmaPack">, DefaultFalse,
PosFlag<SetTrue, [CC1Option], "Enable Apple gcc-compatible #pragma pack handling">,
NegFlag<SetFalse>>;
-def fxl_pragma_pack : Flag<["-"], "fxl-pragma-pack">, Group<f_Group>, Flags<[CC1Option]>,
- HelpText<"Enable IBM XL #pragma pack handling">;
+defm xl_pragma_pack : BoolFOption<"xl-pragma-pack",
+ LangOpts<"XLPragmaPack">, DefaultFalse,
+ PosFlag<SetTrue, [CC1Option], "Enable IBM XL #pragma pack handling">,
+ NegFlag<SetFalse>>;
def shared_libsan : Flag<["-"], "shared-libsan">,
HelpText<"Dynamically link the sanitizer runtime">;
def static_libsan : Flag<["-"], "static-libsan">,
@@ -1271,8 +1275,6 @@
Group<f_Group>, Flags<[CC1Option]>,
HelpText<"Print a template comparison tree for differing templates">,
MarshallingInfoFlag<DiagnosticOpts<"ShowTemplateTree">>;
-def fdeclspec : Flag<["-"], "fdeclspec">, Group<f_clang_Group>,
- HelpText<"Allow __declspec as a keyword">, Flags<[CC1Option]>;
def fdiscard_value_names : Flag<["-"], "fdiscard-value-names">, Group<f_clang_Group>,
HelpText<"Discard value names in LLVM IR">, Flags<[NoXarchOption]>;
def fno_discard_value_names : Flag<["-"], "fno-discard-value-names">, Group<f_clang_Group>,
@@ -1344,14 +1346,21 @@
def ffp_model_EQ : Joined<["-"], "ffp-model=">, Group<f_Group>, Flags<[NoXarchOption]>,
HelpText<"Controls the semantics of floating-point calculations.">;
def ffp_exception_behavior_EQ : Joined<["-"], "ffp-exception-behavior=">, Group<f_Group>, Flags<[CC1Option]>,
- HelpText<"Specifies the exception behavior of floating-point operations.">;
+ HelpText<"Specifies the exception behavior of floating-point operations.">,
+ Values<"ignore,maytrap,strict">, NormalizedValuesScope<"LangOptions">,
+ NormalizedValues<["FPE_Ignore", "FPE_MayTrap", "FPE_Strict"]>,
+ MarshallingInfoString<LangOpts<"FPExceptionMode">, "FPE_Ignore">, AutoNormalizeEnum;
defm fast_math : OptInFFlag<"fast-math", "Allow aggressive, lossy floating-point optimizations", "", "", [],
LangOpts<"FastMath">, [cl_fast_relaxed_math.KeyPath]>;
def menable_unsafe_fp_math : Flag<["-"], "menable-unsafe-fp-math">, Flags<[CC1Option]>,
HelpText<"Allow unsafe floating-point math optimizations which may decrease precision">,
MarshallingInfoFlag<LangOpts<"UnsafeFPMath">>,
ImpliedByAnyOf<[cl_unsafe_math_optimizations.KeyPath, ffast_math.KeyPath]>;
-defm math_errno : OptInFFlag<"math-errno", "Require math functions to indicate errors by setting errno">;
+defm math_errno : BoolFOption<"math-errno",
+ LangOpts<"MathErrno">, DefaultFalse,
+ PosFlag<SetTrue, [CC1Option], "Require math functions to indicate errors by setting errno">,
+ NegFlag<SetFalse>>,
+ ShouldParseIf<!strconcat("!", open_cl.KeyPath)>;
def fbracket_depth_EQ : Joined<["-"], "fbracket-depth=">, Group<f_Group>, Flags<[CoreOption]>;
def fsignaling_math : Flag<["-"], "fsignaling-math">, Group<f_Group>;
def fno_signaling_math : Flag<["-"], "fno-signaling-math">, Group<f_Group>;
@@ -1850,6 +1859,19 @@
"PPTMK_FullGeneralityVirtualInheritance"]>,
MarshallingInfoString<LangOpts<"MSPointerToMemberRepresentationMethod">, "PPTMK_BestCase">,
AutoNormalizeEnum;
+// __declspec is enabled by default for the PS4 by the driver, and also
+// enabled for Microsoft Extensions or Borland Extensions, here.
+//
+// FIXME: __declspec is also currently enabled for CUDA, but isn't really a
+// CUDA extension. However, it is required for supporting
+// __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has
+// been rewritten in terms of something more generic, remove the Opts.CUDA
+// term here.
+defm declspec : BoolOption<"f", "declspec",
+ LangOpts<"DeclSpecKeyword">, DefaultFalse,
+ PosFlag<SetTrue, [], "Allow", [fms_extensions.KeyPath, fborland_extensions.KeyPath, cuda.KeyPath]>,
+ NegFlag<SetFalse, [], "Disallow">,
+ BothFlags<[CC1Option], " __declspec as a keyword">>, Group<f_clang_Group>;
def fmodules_cache_path : Joined<["-"], "fmodules-cache-path=">, Group<i_Group>,
Flags<[NoXarchOption, CC1Option]>, MetaVarName<"<directory>">,
HelpText<"Specify the module cache path">;
@@ -1976,7 +1998,6 @@
def fmudflap : Flag<["-"], "fmudflap">, Group<f_Group>;
def fnested_functions : Flag<["-"], "fnested-functions">, Group<f_Group>;
def fnext_runtime : Flag<["-"], "fnext-runtime">, Group<f_Group>;
-def fno_xl_pragma_pack : Flag<["-"], "fno-xl-pragma-pack">, Group<f_Group>;
def fno_asm : Flag<["-"], "fno-asm">, Group<f_Group>;
def fno_asynchronous_unwind_tables : Flag<["-"], "fno-asynchronous-unwind-tables">, Group<f_Group>;
def fno_assume_sane_operator_new : Flag<["-"], "fno-assume-sane-operator-new">, Group<f_Group>,
@@ -1997,8 +2018,6 @@
PosFlag<SetTrue, [], "Enable alternative token representations '<:', ':>', '<%', '%>', '%:', '%:%:' (default)">,
NegFlag<SetFalse, [], "Disallow alternative token representations '<:', ':>', '<%', '%>', '%:', '%:%:'">,
BothFlags<[CC1Option]>>;
-def fno_declspec : Flag<["-"], "fno-declspec">, Group<f_clang_Group>,
- HelpText<"Disallow __declspec as a keyword">, Flags<[CC1Option]>;
def fno_eliminate_unused_debug_symbols : Flag<["-"], "fno-eliminate-unused-debug-symbols">, Group<f_Group>;
def fno_inline_functions : Flag<["-"], "fno-inline-functions">, Group<f_clang_Group>, Flags<[CC1Option]>;
def fno_inline : Flag<["-"], "fno-inline">, Group<f_clang_Group>, Flags<[CC1Option]>;
@@ -2084,10 +2103,10 @@
LangOpts<"SizedDeallocation">, DefaultFalse,
PosFlag<SetTrue, [CC1Option], "Enable C++14 sized global deallocation functions">,
NegFlag<SetFalse>>;
-def faligned_allocation : Flag<["-"], "faligned-allocation">, Flags<[CC1Option]>,
- HelpText<"Enable C++17 aligned allocation functions">, Group<f_Group>;
-def fno_aligned_allocation: Flag<["-"], "fno-aligned-allocation">,
- Group<f_Group>, Flags<[CC1Option]>;
+defm aligned_allocation : BoolFOption<"aligned-allocation",
+ LangOpts<"AlignedAllocation">, Default<cpp17.KeyPath>,
+ PosFlag<SetTrue, [], "Enable C++17 aligned allocation functions">,
+ NegFlag<SetFalse>, BothFlags<[CC1Option]>>;
def fnew_alignment_EQ : Joined<["-"], "fnew-alignment=">,
HelpText<"Specifies the largest alignment guaranteed by '::operator new(size_t)'">,
MetaVarName<"<align>">, Group<f_Group>, Flags<[CC1Option]>,
@@ -2243,10 +2262,10 @@
PosFlag<SetTrue, [CC1Option], "Allocate to an enum type only as many bytes as it"
" needs for the declared range of possible values">,
NegFlag<SetFalse>>;
-def fchar8__t : Flag<["-"], "fchar8_t">, Group<f_Group>, Flags<[CC1Option]>,
- HelpText<"Enable C++ builtin type char8_t">;
-def fno_char8__t : Flag<["-"], "fno-char8_t">, Group<f_Group>, Flags<[CC1Option]>,
- HelpText<"Disable C++ builtin type char8_t">;
+defm char8__t : BoolFOption<"char8_t",
+ LangOpts<"Char8">, Default<cpp20.KeyPath>,
+ PosFlag<SetTrue, [], "Enable">, NegFlag<SetFalse, [], "Disable">,
+ BothFlags<[CC1Option], " C++ builtin type char8_t">>;
def fshort_wchar : Flag<["-"], "fshort-wchar">, Group<f_Group>,
HelpText<"Force wchar_t to be a short unsigned int">;
def fno_short_wchar : Flag<["-"], "fno-short-wchar">, Group<f_Group>,
@@ -2269,7 +2288,10 @@
NegFlag<SetFalse, [CC1Option], "Disable spell-checking">, PosFlag<SetTrue>>;
def fspell_checking_limit_EQ : Joined<["-"], "fspell-checking-limit=">, Group<f_Group>;
def fsigned_bitfields : Flag<["-"], "fsigned-bitfields">, Group<f_Group>;
-defm signed_char : OptOutFFlag<"signed-char", "char is signed", "char is unsigned">;
+defm signed_char : BoolFOption<"signed-char",
+ LangOpts<"CharIsSigned">, DefaultTrue,
+ NegFlag<SetFalse, [CC1Option], "char is unsigned">, PosFlag<SetTrue, [], "char is signed">>,
+ ShouldParseIf<!strconcat("!", open_cl.KeyPath)>;
def fsplit_stack : Flag<["-"], "fsplit-stack">, Group<f_Group>;
def fstack_protector_all : Flag<["-"], "fstack-protector-all">, Group<f_Group>,
HelpText<"Enable stack protectors for all functions">;
@@ -2874,7 +2896,9 @@
HelpText<"Disable stack probes which are enabled by default">,
MarshallingInfoFlag<CodeGenOpts<"NoStackArgProbe">>;
def mthread_model : Separate<["-"], "mthread-model">, Group<m_Group>, Flags<[CC1Option]>,
- HelpText<"The thread model to use, e.g. posix, single (posix by default)">, Values<"posix,single">;
+ HelpText<"The thread model to use, e.g. posix, single (posix by default)">, Values<"posix,single">,
+ NormalizedValues<["POSIX", "Single"]>, NormalizedValuesScope<"LangOptions::ThreadModelKind">,
+ MarshallingInfoString<LangOpts<"ThreadModel">, "POSIX">, AutoNormalizeEnum;
def meabi : Separate<["-"], "meabi">, Group<m_Group>, Flags<[CC1Option]>,
HelpText<"Set EABI type, e.g. 4, 5 or gnu (default depends on triple)">, Values<"default,4,5,gnu">,
MarshallingInfoString<TargetOpts<"EABIVersion">, "Default">,
@@ -2995,7 +3019,9 @@
Group<m_aarch64_Features_Group>, Flags<[NoXarchOption,CC1Option]>,
HelpText<"Specify the size in bits of an SVE vector register. Defaults to the"
" vector length agnostic value of \"scalable\". (AArch64 only)">,
- Values<"128,256,512,1024,2048,scalable">;
+ Values<"128,256,512,1024,2048,scalable">,
+ NormalizedValues<["128", "256", "512", "1024", "2048", "0"]>,
+ MarshallingInfoString<LangOpts<"ArmSveVectorBits">, "0">, AutoNormalizeEnum;
def msign_return_address_EQ : Joined<["-"], "msign-return-address=">,
Flags<[CC1Option]>, Group<m_Group>, Values<"none,all,non-leaf">,
@@ -3064,7 +3090,8 @@
def mno_spe : Flag<["-"], "mno-spe">, Group<m_ppc_Features_Group>;
def mefpu2 : Flag<["-"], "mefpu2">, Group<m_ppc_Features_Group>;
def mabi_EQ_vec_extabi : Flag<["-"], "mabi=vec-extabi">, Group<m_Group>, Flags<[CC1Option]>,
- HelpText<"Enable the extended Altivec ABI on AIX (AIX only). Uses volatile and nonvolatile vector registers">;
+ HelpText<"Enable the extended Altivec ABI on AIX (AIX only). Uses volatile and nonvolatile vector registers">,
+ MarshallingInfoFlag<LangOpts<"EnableAIXExtendedAltivecABI">>;
def mabi_EQ_vec_default : Flag<["-"], "mabi=vec-default">, Group<m_Group>, Flags<[CC1Option]>,
HelpText<"Enable the default Altivec ABI on AIX (AIX only). Uses only volatile vector registers.">;
def mvsx : Flag<["-"], "mvsx">, Group<m_ppc_Features_Group>;
@@ -5007,11 +5034,13 @@
def stats_file : Joined<["-"], "stats-file=">,
HelpText<"Filename to write statistics to">,
MarshallingInfoString<FrontendOpts<"StatsFile">>;
-def fdump_record_layouts : Flag<["-"], "fdump-record-layouts">,
- HelpText<"Dump record layout information">;
def fdump_record_layouts_simple : Flag<["-"], "fdump-record-layouts-simple">,
HelpText<"Dump record layout information in a simple form used for testing">,
MarshallingInfoFlag<LangOpts<"DumpRecordLayoutsSimple">>;
+def fdump_record_layouts : Flag<["-"], "fdump-record-layouts">,
+ HelpText<"Dump record layout information">,
+ MarshallingInfoFlag<LangOpts<"DumpRecordLayouts">>,
+ ImpliedByAnyOf<[fdump_record_layouts_simple.KeyPath]>;
def fix_what_you_can : Flag<["-"], "fix-what-you-can">,
HelpText<"Apply fix-it advice even in the presence of unfixable errors">,
MarshallingInfoFlag<FrontendOpts<"FixWhatYouCan">>;
@@ -5045,7 +5074,9 @@
MarshallingInfoFlag<LangOpts<"BuildingPCHWithObjectFile">>;
def aligned_alloc_unavailable : Flag<["-"], "faligned-alloc-unavailable">,
- HelpText<"Aligned allocation/deallocation functions are unavailable">;
+ HelpText<"Aligned allocation/deallocation functions are unavailable">,
+ MarshallingInfoFlag<LangOpts<"AlignedAllocationUnavailable">>,
+ ShouldParseIf<faligned_allocation.KeyPath>;
//===----------------------------------------------------------------------===//
// Language Options
@@ -5075,7 +5106,9 @@
HelpText<"Name of the split dwarf debug info file to encode in the object file">,
MarshallingInfoString<CodeGenOpts<"SplitDwarfFile">>;
def fno_wchar : Flag<["-"], "fno-wchar">,
- HelpText<"Disable C++ builtin type wchar_t">;
+ HelpText<"Disable C++ builtin type wchar_t">,
+ MarshallingInfoNegativeFlag<LangOpts<"WChar">, cplusplus.KeyPath>,
+ ShouldParseIf<cplusplus.KeyPath>;
def fconstant_string_class : Separate<["-"], "fconstant-string-class">,
MetaVarName<"<class name>">,
HelpText<"Specify the class to use for constant Objective-C string objects.">,
@@ -5100,7 +5133,8 @@
HelpText<"default alignment for functions">,
MarshallingInfoStringInt<LangOpts<"FunctionAlignment">>;
def pic_level : Separate<["-"], "pic-level">,
- HelpText<"Value for __PIC__">;
+ HelpText<"Value for __PIC__">,
+ MarshallingInfoStringInt<LangOpts<"PICLevel">>;
def pic_is_pie : Flag<["-"], "pic-is-pie">,
HelpText<"File is for a position independent executable">,
MarshallingInfoFlag<LangOpts<"PIE">>;
@@ -5187,10 +5221,10 @@
def fdebugger_objc_literal : Flag<["-"], "fdebugger-objc-literal">,
HelpText<"Enable special debugger support for Objective-C subscripting and literals">,
MarshallingInfoFlag<LangOpts<"DebuggerObjCLiteral">>;
-def fdeprecated_macro : Flag<["-"], "fdeprecated-macro">,
- HelpText<"Defines the __DEPRECATED macro">;
-def fno_deprecated_macro : Flag<["-"], "fno-deprecated-macro">,
- HelpText<"Undefines the __DEPRECATED macro">;
+defm deprecated_macro : BoolOption<"f", "deprecated-macro",
+ LangOpts<"Deprecated">, DefaultFalse,
+ PosFlag<SetTrue, [], "Defines">, NegFlag<SetFalse, [], "Undefines">,
+ BothFlags<[], " the __DEPRECATED macro">>;
def fobjc_subscripting_legacy_runtime : Flag<["-"], "fobjc-subscripting-legacy-runtime">,
HelpText<"Allow Objective-C array and dictionary subscripting in legacy runtime">;
// TODO: Enforce values valid for MSVtorDispMode.
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