plotfi updated this revision to Diff 198152.
plotfi added a comment.
Herald added subscribers: llvm-commits, MaskRay, hiraditya, arichardson, emaste.
Herald added a reviewer: espindola.
Herald added a project: LLVM.
Adding support for multiple formats using -interface-stubs-version=.
I'll add another diff soon. My idea is what
-interface-stubs-version=experimental-ifo-elf-v1 could be used to generate
literally anything that works currently (which is likely to be a distillation
of whatever is the latest obj2yaml schema), or
-interface-stubs-version=tapi-tbe to generate valid elfabi tapi.
I've also added an optional Endian field to elf tapi because that seems pretty
important to have.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D60974/new/
https://reviews.llvm.org/D60974
Files:
clang/include/clang/Driver/Options.td
clang/include/clang/Driver/Types.def
clang/include/clang/Frontend/FrontendActions.h
clang/include/clang/Frontend/FrontendOptions.h
clang/lib/Driver/Driver.cpp
clang/lib/Driver/ToolChains/Clang.cpp
clang/lib/Frontend/CMakeLists.txt
clang/lib/Frontend/CompilerInvocation.cpp
clang/lib/Frontend/FrontendActions.cpp
clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
clang/test/IFSO/foo-inline.h
clang/test/IFSO/foo.cpp
llvm/include/llvm/TextAPI/ELF/ELFStub.h
llvm/lib/TextAPI/ELF/TBEHandler.cpp
Index: llvm/lib/TextAPI/ELF/TBEHandler.cpp
===================================================================
--- llvm/lib/TextAPI/ELF/TBEHandler.cpp
+++ llvm/lib/TextAPI/ELF/TBEHandler.cpp
@@ -134,6 +134,7 @@
IO.mapRequired("TbeVersion", Stub.TbeVersion);
IO.mapOptional("SoName", Stub.SoName);
IO.mapRequired("Arch", (ELFArchMapper &)Stub.Arch);
+ IO.mapOptional("Endian", Stub.Endian);
IO.mapOptional("NeededLibs", Stub.NeededLibs);
IO.mapRequired("Symbols", Stub.Symbols);
}
Index: llvm/include/llvm/TextAPI/ELF/ELFStub.h
===================================================================
--- llvm/include/llvm/TextAPI/ELF/ELFStub.h
+++ llvm/include/llvm/TextAPI/ELF/ELFStub.h
@@ -55,6 +55,7 @@
VersionTuple TbeVersion;
Optional<std::string> SoName;
ELFArch Arch;
+ Optional<std::string> Endian;
std::vector<std::string> NeededLibs;
std::set<ELFSymbol> Symbols;
Index: clang/test/IFSO/foo.cpp
===================================================================
--- /dev/null
+++ clang/test/IFSO/foo.cpp
@@ -0,0 +1,57 @@
+// Using %clang instead of %clang_cc1 because of -fvisibility
+// RUN: %clang -target x86_64-linux-gnu -emit-interface-stubs -fvisibility=hidden %s -o - | FileCheck --check-prefix=CHECK-HIDDEN %s
+// RUN: %clang -target x86_64-linux-gnu -emit-interface-stubs %s -o - | FileCheck %s
+
+// CHECK-HIDDEN-NOT: _Z4fbarff
+// CHECK: _Z4fbarff
+
+
+
+
+// CHECK-HIDDEN-NOT: _Z3fooii
+// CHECK-NOT: _Z3fooii
+
+
+
+#include "foo-inline.h"
+
+__attribute__ ((visibility ("hidden"))) int foo(int a, int b) { return a + b; }
+__attribute__ ((visibility ("default"))) int foo_default_visi(int a, int b) { return a + b; }
+
+
+__attribute__ ((visibility ("default"))) int fvih_1(int a, int b) { return a + fvih(); }
+
+
+__attribute__((weak)) int someWeakFunc() { return 42; }
+
+int dataA = 34;
+
+namespace baz {
+ template <typename T>
+ T add(T a, T b) {
+ return a + b;
+ }
+}
+
+namespace n {
+ template <typename T>
+ struct __attribute__((__visibility__("default"))) S {
+ S() = default;
+ ~S() = default;
+ int __attribute__((__visibility__(("default")))) func() const { return 32; }
+ int __attribute__((__visibility__(("hidden")))) operator()() const { return 53; }
+ };
+}
+
+template <typename T> T neverUsed(T t) { return t + 2; }
+
+template<> int neverUsed<int>(int t);
+
+void g() { n::S<int>()(); }
+
+namespace qux {
+int bar(int a, int b) { return baz::add<int>(a, b); }
+}
+
+float fbar(float a, float b) { return baz::add<float>(a, b); }
+
Index: clang/test/IFSO/foo-inline.h
===================================================================
--- /dev/null
+++ clang/test/IFSO/foo-inline.h
@@ -0,0 +1,6 @@
+
+inline int fvih() {
+static int fortytwo = 42;
+ return fortytwo;
+}
+
Index: clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
===================================================================
--- clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
+++ clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp
@@ -64,6 +64,8 @@
case GenerateHeaderModule:
return llvm::make_unique<GenerateHeaderModuleAction>();
case GeneratePCH: return llvm::make_unique<GeneratePCHAction>();
+ case GenerateIfsoObjYamlExpV1: return llvm::make_unique<GenerateIfsoObjYamlExpV1Action>();
+ case GenerateIfsoTbeExpV1: return llvm::make_unique<GenerateIfsoTbeExpV1Action>();
case InitOnly: return llvm::make_unique<InitOnlyAction>();
case ParseSyntaxOnly: return llvm::make_unique<SyntaxOnlyAction>();
case ModuleFileInfo: return llvm::make_unique<DumpModuleInfoAction>();
Index: clang/lib/Frontend/FrontendActions.cpp
===================================================================
--- clang/lib/Frontend/FrontendActions.cpp
+++ clang/lib/Frontend/FrontendActions.cpp
@@ -20,11 +20,14 @@
#include "clang/Sema/TemplateInstCallback.h"
#include "clang/Serialization/ASTReader.h"
#include "clang/Serialization/ASTWriter.h"
+#include "llvm/BinaryFormat/ELF.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/YAMLTraits.h"
+#include "clang/AST/RecursiveASTVisitor.h"
+#include "clang/Index/CodegenNameGenerator.h"
#include <memory>
#include <system_error>
@@ -158,6 +161,264 @@
return true;
}
+class IFSOFunctionsConsumer : public ASTConsumer {
+ CompilerInstance &Instance;
+ StringRef InFile = "";
+ StringRef Format = "";
+ std::set<std::string> ParsedTemplates;
+
+ enum RootDeclOrigin { TopLevel = 0, FromTU = 1, IsLate = 2 };
+ struct MangledSymbol {
+ std::string Name = "";
+ uint8_t Type;
+ uint8_t Binding;
+ MangledSymbol() = delete;
+ MangledSymbol(const std::string &Name, uint8_t Type, uint8_t Binding)
+ : Name(Name), Type(Type), Binding(Binding) {}
+ };
+ using MangledSymbols = std::map<const NamedDecl *, MangledSymbol>;
+
+ template <typename T>
+ bool WriteNamedDecl(const NamedDecl *ND, MangledSymbols &Symbols, int RDO) {
+ if (!isa<T>(ND))
+ return false;
+ if (Symbols.find(ND) != Symbols.end())
+ return true;
+ if (isa<ParmVarDecl>(ND))
+ return true;
+ if (ND->getVisibility() != DefaultVisibility)
+ return true;
+ // If this is a FunctionDecl that is dependent on a template parameter, then
+ // don't get the symbol because we can only export specializations.
+ bool IsRDOLate = (RDO & IsLate);
+ if (const auto *FD = dyn_cast<FunctionDecl>(ND))
+ if (FD->isDependentContext() && !IsRDOLate)
+ return true;
+ index::CodegenNameGenerator CGNameGen(ND->getASTContext());
+ std::string MangledName = CGNameGen.getName(ND);
+ uint8_t Type = llvm::ELF::STT_FUNC;
+ uint8_t Binding = llvm::ELF::STB_GLOBAL;
+ if (ND->hasAttr<WeakAttr>() || ND->hasAttr<WeakRefAttr>() ||
+ ND->isWeakImported())
+ Binding = llvm::ELF::STB_WEAK;
+ if (isa<VarDecl>(ND))
+ Type = llvm::ELF::STT_OBJECT;
+
+ Symbols.insert(std::pair<const NamedDecl *, MangledSymbol>(
+ ND, MangledSymbol(MangledName, Type, Binding)));
+ // For now, lets just dump the -fdelayed-template-parsing decls until we
+ // decide how to handle them.
+ if (IsRDOLate) {
+ llvm::errs() << "LATE DECL:\n";
+ ND->dump();
+ }
+ return true;
+ }
+
+ template <typename T>
+ bool HandleSomeDecl(const NamedDecl *ND, MangledSymbols &Symbols, int RDO) {
+ if (!isa<T>(ND))
+ return false;
+ for (auto *I : cast<T>(ND)->decls())
+ HandleNamedDecl(dyn_cast<NamedDecl>(I), Symbols, RDO);
+ return true;
+ }
+
+ template <typename T>
+ bool HandleSomeDeclSpec(const NamedDecl *ND, MangledSymbols &Symbols,
+ int RDO) {
+ if (!isa<T>(ND))
+ return false;
+ for (auto *I : cast<T>(ND)->specializations())
+ HandleNamedDecl(dyn_cast<NamedDecl>(I), Symbols, RDO);
+ return true;
+ }
+
+ bool HandleNamedDecl(const NamedDecl *ND, MangledSymbols &Symbols, int RDO) {
+ if (!ND)
+ return false;
+ // Handle NamespaceDecls first so that we fully recurse to every decl.
+ if (HandleSomeDecl<NamespaceDecl>(ND, Symbols, RDO) ||
+ HandleSomeDecl<CXXRecordDecl>(ND, Symbols, RDO) ||
+ HandleSomeDeclSpec<ClassTemplateDecl>(ND, Symbols, RDO) ||
+ HandleSomeDeclSpec<FunctionTemplateDecl>(ND, Symbols, RDO))
+ return true;
+ if (!(RDO & FromTU))
+ return true;
+ if (const auto *TTPD = dyn_cast<TemplateTypeParmDecl>(ND))
+ return true;
+ if (WriteNamedDecl<VarDecl>(ND, Symbols, RDO) ||
+ WriteNamedDecl<CXXMethodDecl>(ND, Symbols, RDO) ||
+ WriteNamedDecl<FunctionDecl>(ND, Symbols, RDO))
+ return true;
+ // While IFSOs are in the development stage, it's probably best to catch
+ // anything that's not a VarDecl or Template/FunctionDecl.
+ ND->dump();
+ llvm_unreachable("ifso: Expected a function or function template decl.");
+ return false;
+ }
+
+public:
+ IFSOFunctionsConsumer(CompilerInstance &Instance, StringRef InFile,
+ StringRef Format)
+ : Instance(Instance), InFile(InFile), Format(Format) {}
+
+ void HandleTranslationUnit(ASTContext &context) override {
+ struct Visitor : public RecursiveASTVisitor<Visitor> {
+ bool VisitNamedDecl(NamedDecl *ND) {
+ if (auto *FD = dyn_cast<FunctionDecl>(ND))
+ (FD->isLateTemplateParsed() ? LateParsedDecls : NamedDecls)
+ .insert(FD);
+ else if (auto *VD = dyn_cast<ValueDecl>(ND))
+ ValueDecls.insert(VD);
+ else
+ NamedDecls.insert(ND);
+ return true;
+ }
+
+ std::set<NamedDecl *> LateParsedDecls;
+ std::set<NamedDecl *> NamedDecls;
+ std::set<ValueDecl *> ValueDecls;
+ } v;
+
+ v.TraverseDecl(context.getTranslationUnitDecl());
+
+ MangledSymbols Symbols;
+ auto OS = Instance.createDefaultOutputFile(/*Binary=*/false, InFile, "ifo");
+ if (!OS)
+ return;
+
+ if (Instance.getLangOpts().DelayedTemplateParsing) {
+ clang::Sema &sema = Instance.getSema();
+ for (const auto *FD : v.LateParsedDecls) {
+ clang::LateParsedTemplate &LPT =
+ *sema.LateParsedTemplateMap.find(cast<FunctionDecl>(FD))->second;
+ sema.LateTemplateParser(sema.OpaqueParser, LPT);
+ HandleNamedDecl(FD, Symbols, (FromTU | IsLate));
+ }
+ }
+
+ for (const NamedDecl *ND : v.ValueDecls)
+ HandleNamedDecl(ND, Symbols, FromTU);
+ for (const NamedDecl *ND : v.NamedDecls)
+ HandleNamedDecl(ND, Symbols, FromTU);
+
+ auto writeIfoYaml = [](const llvm::Triple &T, const MangledSymbols &Symbols,
+ const ASTContext &context, StringRef Format,
+ raw_ostream &OS) -> void {
+ OS << "--- !" << Format << "\n";
+ OS << "FileHeader:\n";
+ OS << " Class: ELFCLASS";
+ OS << (T.isArch64Bit() ? "64" : "32");
+ OS << "\n";
+ OS << " Data: ELFDATA2";
+ OS << (T.isLittleEndian() ? "LSB" : "MSB");
+ OS << "\n";
+ OS << " Type: ET_REL\n";
+ OS << " Machine: "
+ << llvm::StringSwitch<llvm::StringRef>(T.getArchName())
+ .Case("x86_64", "EM_X86_64")
+ .Case("i386", "EM_386")
+ .Case("i686", "EM_386")
+ .Case("aarch64", "EM_AARCH64")
+ .Case("amdgcn", "EM_AMDGPU")
+ .Case("r600", "EM_AMDGPU")
+ .Case("arm", "EM_ARM")
+ .Case("thumb", "EM_ARM")
+ .Case("avr", "EM_AVR")
+ .Case("mips", "EM_MIPS")
+ .Case("mipsel", "EM_MIPS")
+ .Case("mips64", "EM_MIPS")
+ .Case("mips64el", "EM_MIPS")
+ .Case("msp430", "EM_MSP430")
+ .Case("ppc", "EM_PPC")
+ .Case("ppc64", "EM_PPC64")
+ .Case("ppc64le", "EM_PPC64")
+ .Case("x86", T.isOSIAMCU() ? "EM_IAMCU" : "EM_386")
+ .Case("x86_64", "EM_X86_64")
+ .Default("EM_NONE")
+ << "\nSymbols:\n";
+ for (auto E : Symbols) {
+ const MangledSymbol &Symbol = E.second;
+ OS << " - Name: " << Symbol.Name << "\n"
+ << " Type: STT_";
+ switch (Symbol.Type) {
+ default:
+ case llvm::ELF::STT_NOTYPE:
+ OS << "NOTYPE";
+ break;
+ case llvm::ELF::STT_OBJECT:
+ OS << "OBJECT";
+ break;
+ case llvm::ELF::STT_FUNC:
+ OS << "FUNC";
+ break;
+ }
+ OS << "\n Binding: STB_"
+ << ((Symbol.Binding == llvm::ELF::STB_WEAK) ? "WEAK" : "GLOBAL")
+ << "\n";
+ }
+ OS << "...\n";
+ OS.flush();
+ };
+
+ auto writeIfoElfAbiYaml = [](const llvm::Triple &T,
+ const MangledSymbols &Symbols,
+ const ASTContext &context, StringRef Format,
+ raw_ostream &OS) -> void {
+ OS << "--- !" << Format << "\n";
+ OS << "TbeVersion: 1.0\n";
+ OS << "Arch: " << T.getArchName() << "\n";
+ OS << "Endian: " << (T.isLittleEndian() ? "little" : "big") << "\n";
+ OS << "Symbols:\n";
+ for (auto E : Symbols) {
+ const MangledSymbol &Symbol = E.second;
+ OS << " " << Symbol.Name << ": { Type: ";
+ switch (Symbol.Type) {
+ default:
+ llvm_unreachable("clang -emit-ifso: Unexpected symbol type.");
+ case llvm::ELF::STT_NOTYPE:
+ OS << "NoType";
+ break;
+ case llvm::ELF::STT_OBJECT: {
+ auto VD = cast<ValueDecl>(E.first)->getType();
+ OS << "Object, Size: "
+ << context.getTypeSizeInChars(VD).getQuantity();
+ break;
+ }
+ case llvm::ELF::STT_FUNC:
+ OS << "Func";
+ break;
+ }
+ if (Symbol.Binding == llvm::ELF::STB_WEAK)
+ OS << ", Weak: true";
+ OS << " }\n";
+ }
+ OS << "...\n";
+ OS.flush();
+ };
+
+ if (Format != "tapi-tbe")
+ writeIfoYaml(Instance.getTarget().getTriple(), Symbols, context, Format,
+ *OS);
+ else
+ writeIfoElfAbiYaml(Instance.getTarget().getTriple(), Symbols, context,
+ Format, *OS);
+ }
+};
+
+std::unique_ptr<ASTConsumer>
+GenerateIfsoObjYamlExpV1Action::CreateASTConsumer(CompilerInstance &CI,
+ StringRef InFile) {
+ return llvm::make_unique<IFSOFunctionsConsumer>(CI, InFile, "ifo-elf-v1");
+}
+
+std::unique_ptr<ASTConsumer>
+GenerateIfsoTbeExpV1Action::CreateASTConsumer(CompilerInstance &CI,
+ StringRef InFile) {
+ return llvm::make_unique<IFSOFunctionsConsumer>(CI, InFile, "tapi-tbe");
+}
+
std::unique_ptr<ASTConsumer>
GenerateModuleAction::CreateASTConsumer(CompilerInstance &CI,
StringRef InFile) {
Index: clang/lib/Frontend/CompilerInvocation.cpp
===================================================================
--- clang/lib/Frontend/CompilerInvocation.cpp
+++ clang/lib/Frontend/CompilerInvocation.cpp
@@ -1645,6 +1645,14 @@
Opts.ProgramAction = frontend::GenerateHeaderModule; break;
case OPT_emit_pch:
Opts.ProgramAction = frontend::GeneratePCH; break;
+ case OPT_emit_ifso: {
+ Opts.ProgramAction = frontend::GenerateIfsoTbeExpV1;
+ if (Args.hasArg(OPT_ifso_version_EQ)) {
+ if(Args.getLastArgValue(OPT_ifso_version_EQ) != "tapi-tbe")
+ Opts.ProgramAction = frontend::GenerateIfsoObjYamlExpV1;
+ }
+ break;
+ }
case OPT_init_only:
Opts.ProgramAction = frontend::InitOnly; break;
case OPT_fsyntax_only:
@@ -3066,6 +3074,8 @@
case frontend::GenerateModuleInterface:
case frontend::GenerateHeaderModule:
case frontend::GeneratePCH:
+ case frontend::GenerateIfsoObjYamlExpV1:
+ case frontend::GenerateIfsoTbeExpV1:
case frontend::ParseSyntaxOnly:
case frontend::ModuleFileInfo:
case frontend::VerifyPCH:
Index: clang/lib/Frontend/CMakeLists.txt
===================================================================
--- clang/lib/Frontend/CMakeLists.txt
+++ clang/lib/Frontend/CMakeLists.txt
@@ -54,6 +54,7 @@
clangAST
clangBasic
clangDriver
+ clangIndex
clangEdit
clangLex
clangParse
Index: clang/lib/Driver/ToolChains/Clang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Clang.cpp
+++ clang/lib/Driver/ToolChains/Clang.cpp
@@ -3582,6 +3582,13 @@
} else if (JA.getType() == types::TY_LLVM_BC ||
JA.getType() == types::TY_LTO_BC) {
CmdArgs.push_back("-emit-llvm-bc");
+ } else if (JA.getType() == types::TY_IFS) {
+ CmdArgs.push_back("-emit-interface-stubs");
+ if (Args.hasArg(options::OPT_ifso_version_EQ)) {
+ CmdArgs.push_back(Args.MakeArgString(
+ Twine("-interface-stubs-version=") +
+ Args.getLastArgValue(options::OPT_ifso_version_EQ)));
+ }
} else if (JA.getType() == types::TY_PP_Asm) {
CmdArgs.push_back("-S");
} else if (JA.getType() == types::TY_AST) {
Index: clang/lib/Driver/Driver.cpp
===================================================================
--- clang/lib/Driver/Driver.cpp
+++ clang/lib/Driver/Driver.cpp
@@ -285,6 +285,7 @@
(PhaseArg = DAL.getLastArg(options::OPT_rewrite_objc)) ||
(PhaseArg = DAL.getLastArg(options::OPT_rewrite_legacy_objc)) ||
(PhaseArg = DAL.getLastArg(options::OPT__migrate)) ||
+ (PhaseArg = DAL.getLastArg(options::OPT_emit_ifso)) ||
(PhaseArg = DAL.getLastArg(options::OPT__analyze,
options::OPT__analyze_auto)) ||
(PhaseArg = DAL.getLastArg(options::OPT_emit_ast))) {
@@ -3445,6 +3446,8 @@
return C.MakeAction<CompileJobAction>(Input, types::TY_ModuleFile);
if (Args.hasArg(options::OPT_verify_pch))
return C.MakeAction<VerifyPCHJobAction>(Input, types::TY_Nothing);
+ if (Args.hasArg(options::OPT_emit_ifso))
+ return C.MakeAction<CompileJobAction>(Input, types::TY_IFS);
return C.MakeAction<CompileJobAction>(Input, types::TY_LLVM_BC);
}
case phases::Backend: {
Index: clang/include/clang/Frontend/FrontendOptions.h
===================================================================
--- clang/include/clang/Frontend/FrontendOptions.h
+++ clang/include/clang/Frontend/FrontendOptions.h
@@ -87,6 +87,10 @@
/// Generate pre-compiled header.
GeneratePCH,
+ /// Generate Interface Stub Files.
+ GenerateIfsoObjYamlExpV1,
+ GenerateIfsoTbeExpV1,
+
/// Only execute frontend initialization.
InitOnly,
Index: clang/include/clang/Frontend/FrontendActions.h
===================================================================
--- clang/include/clang/Frontend/FrontendActions.h
+++ clang/include/clang/Frontend/FrontendActions.h
@@ -119,6 +119,24 @@
bool hasASTFileSupport() const override { return false; }
};
+class GenerateIFSOAction : public ASTFrontendAction {
+protected:
+ TranslationUnitKind getTranslationUnitKind() override { return TU_Module; }
+
+ bool hasASTFileSupport() const override { return false; }
+};
+// Support different ifso formats this way:
+class GenerateIfsoObjYamlExpV1Action : public GenerateIFSOAction {
+protected:
+ std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
+ StringRef InFile) override;
+};
+class GenerateIfsoTbeExpV1Action : public GenerateIFSOAction {
+protected:
+ std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
+ StringRef InFile) override;
+};
+
class GenerateModuleFromModuleMapAction : public GenerateModuleAction {
private:
bool BeginSourceFileAction(CompilerInstance &CI) override;
Index: clang/include/clang/Driver/Types.def
===================================================================
--- clang/include/clang/Driver/Types.def
+++ clang/include/clang/Driver/Types.def
@@ -88,6 +88,7 @@
// Misc.
TYPE("ast", AST, INVALID, "ast", "u")
+TYPE("ifs", IFS, INVALID, "ifs", "u")
TYPE("pcm", ModuleFile, INVALID, "pcm", "u")
TYPE("plist", Plist, INVALID, "plist", "")
TYPE("rewritten-objc", RewrittenObjC,INVALID, "cpp", "")
Index: clang/include/clang/Driver/Options.td
===================================================================
--- clang/include/clang/Driver/Options.td
+++ clang/include/clang/Driver/Options.td
@@ -623,6 +623,9 @@
HelpText<"Emit Clang AST files for source inputs">;
def emit_llvm : Flag<["-"], "emit-llvm">, Flags<[CC1Option]>, Group<Action_Group>,
HelpText<"Use the LLVM representation for assembler and object files">;
+def emit_ifso : Flag<["-"], "emit-interface-stubs">, Flags<[CC1Option]>, Group<Action_Group>,
+ HelpText<"Generate Inteface Stub Files.">;
+def ifso_version_EQ : Joined<["-"], "interface-stubs-version=">, Flags<[CC1Option]>;
def exported__symbols__list : Separate<["-"], "exported_symbols_list">;
def e : JoinedOrSeparate<["-"], "e">, Group<Link_Group>;
def fPIC : Flag<["-"], "fPIC">, Group<f_Group>;
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