From 276f9e79a318281962cf8a42204d0fea74a31daa Mon Sep 17 00:00:00 2001 From: Puyan Lotfi Date: Wed, 19 Jun 2019 20:51:35 +0000 Subject: [clang][AST] ASTNameGenerator: A refactoring of CodegenNameGeneratorImpl (NFC). This is a NFC refactor move of CodegenNameGeneratorImpl from clang::Index to clang:AST (and rename to ASTNameGenerator). The purpose is to make the highlevel mangling code more reusable inside of clang (say in places like clang FrontendAction). This does not affect anything in CodegenNameGenerator, except that CodegenNameGenerator will now use ASTNameGenerator (in AST). Differential Revision: https://reviews.llvm.org/D63535 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@363878 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/AST/CMakeLists.txt | 1 + lib/AST/Mangle.cpp | 183 +++++++++++++++++++++++++++++++++++ lib/Index/CodegenNameGenerator.cpp | 193 +------------------------------------ 3 files changed, 185 insertions(+), 192 deletions(-) (limited to 'lib') diff --git a/lib/AST/CMakeLists.txt b/lib/AST/CMakeLists.txt index a7c50bec11..64ad029cce 100644 --- a/lib/AST/CMakeLists.txt +++ b/lib/AST/CMakeLists.txt @@ -1,5 +1,6 @@ set(LLVM_LINK_COMPONENTS BinaryFormat + Core Support ) diff --git a/lib/AST/Mangle.cpp b/lib/AST/Mangle.cpp index 03ebf98a7f..ec3b6868a3 100644 --- a/lib/AST/Mangle.cpp +++ b/lib/AST/Mangle.cpp @@ -17,10 +17,12 @@ #include "clang/AST/DeclTemplate.h" #include "clang/AST/ExprCXX.h" #include "clang/AST/Mangle.h" +#include "clang/AST/VTableBuilder.h" #include "clang/Basic/ABI.h" #include "clang/Basic/SourceManager.h" #include "clang/Basic/TargetInfo.h" #include "llvm/ADT/StringExtras.h" +#include "llvm/IR/Mangler.h" #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/raw_ostream.h" @@ -280,3 +282,184 @@ void MangleContext::mangleObjCMethodName(const ObjCMethodDecl *MD, mangleObjCMethodNameWithoutSize(MD, OS); Out << OS.str().size() << OS.str(); } + +ASTNameGenerator::ASTNameGenerator(ASTContext &Ctx) + : MC(Ctx.createMangleContext()), DL(Ctx.getTargetInfo().getDataLayout()) {} + +bool ASTNameGenerator::writeName(const Decl *D, raw_ostream &OS) { + // First apply frontend mangling. + SmallString<128> FrontendBuf; + llvm::raw_svector_ostream FrontendBufOS(FrontendBuf); + if (auto *FD = dyn_cast(D)) { + if (FD->isDependentContext()) + return true; + if (writeFuncOrVarName(FD, FrontendBufOS)) + return true; + } else if (auto *VD = dyn_cast(D)) { + if (writeFuncOrVarName(VD, FrontendBufOS)) + return true; + } else if (auto *MD = dyn_cast(D)) { + MC->mangleObjCMethodNameWithoutSize(MD, OS); + return false; + } else if (auto *ID = dyn_cast(D)) { + writeObjCClassName(ID, FrontendBufOS); + } else { + return true; + } + + // Now apply backend mangling. + llvm::Mangler::getNameWithPrefix(OS, FrontendBufOS.str(), DL); + return false; +} + +std::string ASTNameGenerator::getName(const Decl *D) { + std::string Name; + { + llvm::raw_string_ostream OS(Name); + writeName(D, OS); + } + return Name; +} + +enum ObjCKind { + ObjCClass, + ObjCMetaclass, +}; + +static StringRef getClassSymbolPrefix(ObjCKind Kind, + const ASTContext &Context) { + if (Context.getLangOpts().ObjCRuntime.isGNUFamily()) + return Kind == ObjCMetaclass ? "_OBJC_METACLASS_" : "_OBJC_CLASS_"; + return Kind == ObjCMetaclass ? "OBJC_METACLASS_$_" : "OBJC_CLASS_$_"; +} + +std::vector +ASTNameGenerator::getAllManglings(const ObjCContainerDecl *OCD) { + StringRef ClassName; + if (const auto *OID = dyn_cast(OCD)) + ClassName = OID->getObjCRuntimeNameAsString(); + else if (const auto *OID = dyn_cast(OCD)) + ClassName = OID->getObjCRuntimeNameAsString(); + + if (ClassName.empty()) + return {}; + + auto Mangle = [&](ObjCKind Kind, StringRef ClassName) -> std::string { + SmallString<40> Mangled; + auto Prefix = getClassSymbolPrefix(Kind, OCD->getASTContext()); + llvm::Mangler::getNameWithPrefix(Mangled, Prefix + ClassName, DL); + return Mangled.str(); + }; + + return { + Mangle(ObjCClass, ClassName), + Mangle(ObjCMetaclass, ClassName), + }; +} + +std::vector ASTNameGenerator::getAllManglings(const Decl *D) { + if (const auto *OCD = dyn_cast(D)) + return getAllManglings(OCD); + + if (!(isa(D) || isa(D))) + return {}; + + const NamedDecl *ND = cast(D); + + ASTContext &Ctx = ND->getASTContext(); + std::unique_ptr M(Ctx.createMangleContext()); + + std::vector Manglings; + + auto hasDefaultCXXMethodCC = [](ASTContext &C, const CXXMethodDecl *MD) { + auto DefaultCC = C.getDefaultCallingConvention(/*IsVariadic=*/false, + /*IsCSSMethod=*/true); + auto CC = MD->getType()->getAs()->getCallConv(); + return CC == DefaultCC; + }; + + if (const auto *CD = dyn_cast_or_null(ND)) { + Manglings.emplace_back(getMangledStructor(CD, Ctor_Base)); + + if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) + if (!CD->getParent()->isAbstract()) + Manglings.emplace_back(getMangledStructor(CD, Ctor_Complete)); + + if (Ctx.getTargetInfo().getCXXABI().isMicrosoft()) + if (CD->hasAttr() && CD->isDefaultConstructor()) + if (!(hasDefaultCXXMethodCC(Ctx, CD) && CD->getNumParams() == 0)) + Manglings.emplace_back(getMangledStructor(CD, Ctor_DefaultClosure)); + } else if (const auto *DD = dyn_cast_or_null(ND)) { + Manglings.emplace_back(getMangledStructor(DD, Dtor_Base)); + if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) { + Manglings.emplace_back(getMangledStructor(DD, Dtor_Complete)); + if (DD->isVirtual()) + Manglings.emplace_back(getMangledStructor(DD, Dtor_Deleting)); + } + } else if (const auto *MD = dyn_cast_or_null(ND)) { + Manglings.emplace_back(getName(ND)); + if (MD->isVirtual()) + if (const auto *TIV = Ctx.getVTableContext()->getThunkInfo(MD)) + for (const auto &T : *TIV) + Manglings.emplace_back(getMangledThunk(MD, T)); + } + + return Manglings; +} + +bool ASTNameGenerator::writeFuncOrVarName(const NamedDecl *D, raw_ostream &OS) { + if (MC->shouldMangleDeclName(D)) { + if (const auto *CtorD = dyn_cast(D)) + MC->mangleCXXCtor(CtorD, Ctor_Complete, OS); + else if (const auto *DtorD = dyn_cast(D)) + MC->mangleCXXDtor(DtorD, Dtor_Complete, OS); + else + MC->mangleName(D, OS); + return false; + } else { + IdentifierInfo *II = D->getIdentifier(); + if (!II) + return true; + OS << II->getName(); + return false; + } +} + +void ASTNameGenerator::writeObjCClassName(const ObjCInterfaceDecl *D, + raw_ostream &OS) { + OS << getClassSymbolPrefix(ObjCClass, D->getASTContext()); + OS << D->getObjCRuntimeNameAsString(); +} + +std::string ASTNameGenerator::getMangledStructor(const NamedDecl *ND, + unsigned StructorType) { + std::string FrontendBuf; + llvm::raw_string_ostream FOS(FrontendBuf); + + if (const auto *CD = dyn_cast_or_null(ND)) + MC->mangleCXXCtor(CD, static_cast(StructorType), FOS); + else if (const auto *DD = dyn_cast_or_null(ND)) + MC->mangleCXXDtor(DD, static_cast(StructorType), FOS); + + std::string BackendBuf; + llvm::raw_string_ostream BOS(BackendBuf); + + llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL); + + return BOS.str(); +} + +std::string ASTNameGenerator::getMangledThunk(const CXXMethodDecl *MD, + const ThunkInfo &T) { + std::string FrontendBuf; + llvm::raw_string_ostream FOS(FrontendBuf); + + MC->mangleThunk(MD, T, FOS); + + std::string BackendBuf; + llvm::raw_string_ostream BOS(BackendBuf); + + llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL); + + return BOS.str(); +} diff --git a/lib/Index/CodegenNameGenerator.cpp b/lib/Index/CodegenNameGenerator.cpp index b56d769331..56d3d06034 100644 --- a/lib/Index/CodegenNameGenerator.cpp +++ b/lib/Index/CodegenNameGenerator.cpp @@ -12,203 +12,12 @@ #include "clang/Index/CodegenNameGenerator.h" #include "clang/AST/ASTContext.h" -#include "clang/AST/DeclCXX.h" -#include "clang/AST/DeclObjC.h" -#include "clang/AST/Mangle.h" -#include "clang/AST/VTableBuilder.h" -#include "clang/Basic/TargetInfo.h" -#include "llvm/IR/DataLayout.h" -#include "llvm/IR/Mangler.h" -#include "llvm/Support/raw_ostream.h" using namespace clang; using namespace clang::index; -struct CodegenNameGenerator::Implementation { - std::unique_ptr MC; - llvm::DataLayout DL; - - Implementation(ASTContext &Ctx) - : MC(Ctx.createMangleContext()), - DL(Ctx.getTargetInfo().getDataLayout()) {} - - bool writeName(const Decl *D, raw_ostream &OS) { - // First apply frontend mangling. - SmallString<128> FrontendBuf; - llvm::raw_svector_ostream FrontendBufOS(FrontendBuf); - if (auto *FD = dyn_cast(D)) { - if (FD->isDependentContext()) - return true; - if (writeFuncOrVarName(FD, FrontendBufOS)) - return true; - } else if (auto *VD = dyn_cast(D)) { - if (writeFuncOrVarName(VD, FrontendBufOS)) - return true; - } else if (auto *MD = dyn_cast(D)) { - MC->mangleObjCMethodNameWithoutSize(MD, OS); - return false; - } else if (auto *ID = dyn_cast(D)) { - writeObjCClassName(ID, FrontendBufOS); - } else { - return true; - } - - // Now apply backend mangling. - llvm::Mangler::getNameWithPrefix(OS, FrontendBufOS.str(), DL); - return false; - } - - std::string getName(const Decl *D) { - std::string Name; - { - llvm::raw_string_ostream OS(Name); - writeName(D, OS); - } - return Name; - } - - enum ObjCKind { - ObjCClass, - ObjCMetaclass, - }; - - std::vector getAllManglings(const ObjCContainerDecl *OCD) { - StringRef ClassName; - if (const auto *OID = dyn_cast(OCD)) - ClassName = OID->getObjCRuntimeNameAsString(); - else if (const auto *OID = dyn_cast(OCD)) - ClassName = OID->getObjCRuntimeNameAsString(); - - if (ClassName.empty()) - return {}; - - auto Mangle = [&](ObjCKind Kind, StringRef ClassName) -> std::string { - SmallString<40> Mangled; - auto Prefix = getClassSymbolPrefix(Kind, OCD->getASTContext()); - llvm::Mangler::getNameWithPrefix(Mangled, Prefix + ClassName, DL); - return Mangled.str(); - }; - - return { - Mangle(ObjCClass, ClassName), - Mangle(ObjCMetaclass, ClassName), - }; - } - - std::vector getAllManglings(const Decl *D) { - if (const auto *OCD = dyn_cast(D)) - return getAllManglings(OCD); - - if (!(isa(D) || isa(D))) - return {}; - - const NamedDecl *ND = cast(D); - - ASTContext &Ctx = ND->getASTContext(); - std::unique_ptr M(Ctx.createMangleContext()); - - std::vector Manglings; - - auto hasDefaultCXXMethodCC = [](ASTContext &C, const CXXMethodDecl *MD) { - auto DefaultCC = C.getDefaultCallingConvention(/*IsVariadic=*/false, - /*IsCSSMethod=*/true); - auto CC = MD->getType()->getAs()->getCallConv(); - return CC == DefaultCC; - }; - - if (const auto *CD = dyn_cast_or_null(ND)) { - Manglings.emplace_back(getMangledStructor(CD, Ctor_Base)); - - if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) - if (!CD->getParent()->isAbstract()) - Manglings.emplace_back(getMangledStructor(CD, Ctor_Complete)); - - if (Ctx.getTargetInfo().getCXXABI().isMicrosoft()) - if (CD->hasAttr() && CD->isDefaultConstructor()) - if (!(hasDefaultCXXMethodCC(Ctx, CD) && CD->getNumParams() == 0)) - Manglings.emplace_back(getMangledStructor(CD, Ctor_DefaultClosure)); - } else if (const auto *DD = dyn_cast_or_null(ND)) { - Manglings.emplace_back(getMangledStructor(DD, Dtor_Base)); - if (Ctx.getTargetInfo().getCXXABI().isItaniumFamily()) { - Manglings.emplace_back(getMangledStructor(DD, Dtor_Complete)); - if (DD->isVirtual()) - Manglings.emplace_back(getMangledStructor(DD, Dtor_Deleting)); - } - } else if (const auto *MD = dyn_cast_or_null(ND)) { - Manglings.emplace_back(getName(ND)); - if (MD->isVirtual()) - if (const auto *TIV = Ctx.getVTableContext()->getThunkInfo(MD)) - for (const auto &T : *TIV) - Manglings.emplace_back(getMangledThunk(MD, T)); - } - - return Manglings; - } - -private: - bool writeFuncOrVarName(const NamedDecl *D, raw_ostream &OS) { - if (MC->shouldMangleDeclName(D)) { - if (const auto *CtorD = dyn_cast(D)) - MC->mangleCXXCtor(CtorD, Ctor_Complete, OS); - else if (const auto *DtorD = dyn_cast(D)) - MC->mangleCXXDtor(DtorD, Dtor_Complete, OS); - else - MC->mangleName(D, OS); - return false; - } else { - IdentifierInfo *II = D->getIdentifier(); - if (!II) - return true; - OS << II->getName(); - return false; - } - } - - void writeObjCClassName(const ObjCInterfaceDecl *D, raw_ostream &OS) { - OS << getClassSymbolPrefix(ObjCClass, D->getASTContext()); - OS << D->getObjCRuntimeNameAsString(); - } - - static StringRef getClassSymbolPrefix(ObjCKind Kind, const ASTContext &Context) { - if (Context.getLangOpts().ObjCRuntime.isGNUFamily()) - return Kind == ObjCMetaclass ? "_OBJC_METACLASS_" : "_OBJC_CLASS_"; - return Kind == ObjCMetaclass ? "OBJC_METACLASS_$_" : "OBJC_CLASS_$_"; - } - - std::string getMangledStructor(const NamedDecl *ND, unsigned StructorType) { - std::string FrontendBuf; - llvm::raw_string_ostream FOS(FrontendBuf); - - if (const auto *CD = dyn_cast_or_null(ND)) - MC->mangleCXXCtor(CD, static_cast(StructorType), FOS); - else if (const auto *DD = dyn_cast_or_null(ND)) - MC->mangleCXXDtor(DD, static_cast(StructorType), FOS); - - std::string BackendBuf; - llvm::raw_string_ostream BOS(BackendBuf); - - llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL); - - return BOS.str(); - } - - std::string getMangledThunk(const CXXMethodDecl *MD, const ThunkInfo &T) { - std::string FrontendBuf; - llvm::raw_string_ostream FOS(FrontendBuf); - - MC->mangleThunk(MD, T, FOS); - - std::string BackendBuf; - llvm::raw_string_ostream BOS(BackendBuf); - - llvm::Mangler::getNameWithPrefix(BOS, FOS.str(), DL); - - return BOS.str(); - } -}; - CodegenNameGenerator::CodegenNameGenerator(ASTContext &Ctx) - : Impl(new Implementation(Ctx)) { + : Impl(new ASTNameGenerator(Ctx)) { } CodegenNameGenerator::~CodegenNameGenerator() { -- cgit v1.2.1