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authorpatrick <patrick@openbsd.org>2020-08-03 15:06:44 +0000
committerpatrick <patrick@openbsd.org>2020-08-03 15:06:44 +0000
commitb64793999546ed8adebaeebd9d8345d18db8927d (patch)
tree4357c27b561d73b0e089727c6ed659f2ceff5f47 /gnu/llvm/tools/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp
parentAdd support for UTF-8 DISPLAY-HINTs with octet length. For now only (diff)
downloadwireguard-openbsd-b64793999546ed8adebaeebd9d8345d18db8927d.tar.xz
wireguard-openbsd-b64793999546ed8adebaeebd9d8345d18db8927d.zip
Remove LLVM 8.0.1 files.
Diffstat (limited to 'gnu/llvm/tools/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp')
-rw-r--r--gnu/llvm/tools/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp355
1 files changed, 0 insertions, 355 deletions
diff --git a/gnu/llvm/tools/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp b/gnu/llvm/tools/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp
deleted file mode 100644
index 6f00c836f93..00000000000
--- a/gnu/llvm/tools/clang/lib/CodeGen/ObjectFilePCHContainerOperations.cpp
+++ /dev/null
@@ -1,355 +0,0 @@
-//===--- ObjectFilePCHContainerOperations.cpp -----------------------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/CodeGen/ObjectFilePCHContainerOperations.h"
-#include "CGDebugInfo.h"
-#include "CodeGenModule.h"
-#include "clang/AST/ASTContext.h"
-#include "clang/AST/DeclObjC.h"
-#include "clang/AST/Expr.h"
-#include "clang/AST/RecursiveASTVisitor.h"
-#include "clang/Basic/CodeGenOptions.h"
-#include "clang/Basic/Diagnostic.h"
-#include "clang/Basic/TargetInfo.h"
-#include "clang/CodeGen/BackendUtil.h"
-#include "clang/Frontend/CompilerInstance.h"
-#include "clang/Lex/HeaderSearch.h"
-#include "clang/Lex/Preprocessor.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/Bitcode/BitstreamReader.h"
-#include "llvm/DebugInfo/DWARF/DWARFContext.h"
-#include "llvm/IR/Constants.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Object/COFF.h"
-#include "llvm/Object/ObjectFile.h"
-#include "llvm/Support/Path.h"
-#include "llvm/Support/TargetRegistry.h"
-#include <memory>
-#include <utility>
-
-using namespace clang;
-
-#define DEBUG_TYPE "pchcontainer"
-
-namespace {
-class PCHContainerGenerator : public ASTConsumer {
- DiagnosticsEngine &Diags;
- const std::string MainFileName;
- const std::string OutputFileName;
- ASTContext *Ctx;
- ModuleMap &MMap;
- const HeaderSearchOptions &HeaderSearchOpts;
- const PreprocessorOptions &PreprocessorOpts;
- CodeGenOptions CodeGenOpts;
- const TargetOptions TargetOpts;
- const LangOptions LangOpts;
- std::unique_ptr<llvm::LLVMContext> VMContext;
- std::unique_ptr<llvm::Module> M;
- std::unique_ptr<CodeGen::CodeGenModule> Builder;
- std::unique_ptr<raw_pwrite_stream> OS;
- std::shared_ptr<PCHBuffer> Buffer;
-
- /// Visit every type and emit debug info for it.
- struct DebugTypeVisitor : public RecursiveASTVisitor<DebugTypeVisitor> {
- clang::CodeGen::CGDebugInfo &DI;
- ASTContext &Ctx;
- DebugTypeVisitor(clang::CodeGen::CGDebugInfo &DI, ASTContext &Ctx)
- : DI(DI), Ctx(Ctx) {}
-
- /// Determine whether this type can be represented in DWARF.
- static bool CanRepresent(const Type *Ty) {
- return !Ty->isDependentType() && !Ty->isUndeducedType();
- }
-
- bool VisitImportDecl(ImportDecl *D) {
- if (!D->getImportedOwningModule())
- DI.EmitImportDecl(*D);
- return true;
- }
-
- bool VisitTypeDecl(TypeDecl *D) {
- // TagDecls may be deferred until after all decls have been merged and we
- // know the complete type. Pure forward declarations will be skipped, but
- // they don't need to be emitted into the module anyway.
- if (auto *TD = dyn_cast<TagDecl>(D))
- if (!TD->isCompleteDefinition())
- return true;
-
- QualType QualTy = Ctx.getTypeDeclType(D);
- if (!QualTy.isNull() && CanRepresent(QualTy.getTypePtr()))
- DI.getOrCreateStandaloneType(QualTy, D->getLocation());
- return true;
- }
-
- bool VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
- QualType QualTy(D->getTypeForDecl(), 0);
- if (!QualTy.isNull() && CanRepresent(QualTy.getTypePtr()))
- DI.getOrCreateStandaloneType(QualTy, D->getLocation());
- return true;
- }
-
- bool VisitFunctionDecl(FunctionDecl *D) {
- if (isa<CXXMethodDecl>(D))
- // This is not yet supported. Constructing the `this' argument
- // mandates a CodeGenFunction.
- return true;
-
- SmallVector<QualType, 16> ArgTypes;
- for (auto i : D->parameters())
- ArgTypes.push_back(i->getType());
- QualType RetTy = D->getReturnType();
- QualType FnTy = Ctx.getFunctionType(RetTy, ArgTypes,
- FunctionProtoType::ExtProtoInfo());
- if (CanRepresent(FnTy.getTypePtr()))
- DI.EmitFunctionDecl(D, D->getLocation(), FnTy);
- return true;
- }
-
- bool VisitObjCMethodDecl(ObjCMethodDecl *D) {
- if (!D->getClassInterface())
- return true;
-
- bool selfIsPseudoStrong, selfIsConsumed;
- SmallVector<QualType, 16> ArgTypes;
- ArgTypes.push_back(D->getSelfType(Ctx, D->getClassInterface(),
- selfIsPseudoStrong, selfIsConsumed));
- ArgTypes.push_back(Ctx.getObjCSelType());
- for (auto i : D->parameters())
- ArgTypes.push_back(i->getType());
- QualType RetTy = D->getReturnType();
- QualType FnTy = Ctx.getFunctionType(RetTy, ArgTypes,
- FunctionProtoType::ExtProtoInfo());
- if (CanRepresent(FnTy.getTypePtr()))
- DI.EmitFunctionDecl(D, D->getLocation(), FnTy);
- return true;
- }
- };
-
-public:
- PCHContainerGenerator(CompilerInstance &CI, const std::string &MainFileName,
- const std::string &OutputFileName,
- std::unique_ptr<raw_pwrite_stream> OS,
- std::shared_ptr<PCHBuffer> Buffer)
- : Diags(CI.getDiagnostics()), MainFileName(MainFileName),
- OutputFileName(OutputFileName), Ctx(nullptr),
- MMap(CI.getPreprocessor().getHeaderSearchInfo().getModuleMap()),
- HeaderSearchOpts(CI.getHeaderSearchOpts()),
- PreprocessorOpts(CI.getPreprocessorOpts()),
- TargetOpts(CI.getTargetOpts()), LangOpts(CI.getLangOpts()),
- OS(std::move(OS)), Buffer(std::move(Buffer)) {
- // The debug info output isn't affected by CodeModel and
- // ThreadModel, but the backend expects them to be nonempty.
- CodeGenOpts.CodeModel = "default";
- CodeGenOpts.ThreadModel = "single";
- CodeGenOpts.DebugTypeExtRefs = true;
- // When building a module MainFileName is the name of the modulemap file.
- CodeGenOpts.MainFileName =
- LangOpts.CurrentModule.empty() ? MainFileName : LangOpts.CurrentModule;
- CodeGenOpts.setDebugInfo(codegenoptions::FullDebugInfo);
- CodeGenOpts.setDebuggerTuning(CI.getCodeGenOpts().getDebuggerTuning());
- CodeGenOpts.DebugPrefixMap =
- CI.getInvocation().getCodeGenOpts().DebugPrefixMap;
- }
-
- ~PCHContainerGenerator() override = default;
-
- void Initialize(ASTContext &Context) override {
- assert(!Ctx && "initialized multiple times");
-
- Ctx = &Context;
- VMContext.reset(new llvm::LLVMContext());
- M.reset(new llvm::Module(MainFileName, *VMContext));
- M->setDataLayout(Ctx->getTargetInfo().getDataLayout());
- Builder.reset(new CodeGen::CodeGenModule(
- *Ctx, HeaderSearchOpts, PreprocessorOpts, CodeGenOpts, *M, Diags));
-
- // Prepare CGDebugInfo to emit debug info for a clang module.
- auto *DI = Builder->getModuleDebugInfo();
- StringRef ModuleName = llvm::sys::path::filename(MainFileName);
- DI->setPCHDescriptor({ModuleName, "", OutputFileName,
- ASTFileSignature{{{~0U, ~0U, ~0U, ~0U, ~1U}}}});
- DI->setModuleMap(MMap);
- }
-
- bool HandleTopLevelDecl(DeclGroupRef D) override {
- if (Diags.hasErrorOccurred())
- return true;
-
- // Collect debug info for all decls in this group.
- for (auto *I : D)
- if (!I->isFromASTFile()) {
- DebugTypeVisitor DTV(*Builder->getModuleDebugInfo(), *Ctx);
- DTV.TraverseDecl(I);
- }
- return true;
- }
-
- void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) override {
- HandleTopLevelDecl(D);
- }
-
- void HandleTagDeclDefinition(TagDecl *D) override {
- if (Diags.hasErrorOccurred())
- return;
-
- if (D->isFromASTFile())
- return;
-
- // Anonymous tag decls are deferred until we are building their declcontext.
- if (D->getName().empty())
- return;
-
- // Defer tag decls until their declcontext is complete.
- auto *DeclCtx = D->getDeclContext();
- while (DeclCtx) {
- if (auto *D = dyn_cast<TagDecl>(DeclCtx))
- if (!D->isCompleteDefinition())
- return;
- DeclCtx = DeclCtx->getParent();
- }
-
- DebugTypeVisitor DTV(*Builder->getModuleDebugInfo(), *Ctx);
- DTV.TraverseDecl(D);
- Builder->UpdateCompletedType(D);
- }
-
- void HandleTagDeclRequiredDefinition(const TagDecl *D) override {
- if (Diags.hasErrorOccurred())
- return;
-
- if (const RecordDecl *RD = dyn_cast<RecordDecl>(D))
- Builder->getModuleDebugInfo()->completeRequiredType(RD);
- }
-
- void HandleImplicitImportDecl(ImportDecl *D) override {
- if (!D->getImportedOwningModule())
- Builder->getModuleDebugInfo()->EmitImportDecl(*D);
- }
-
- /// Emit a container holding the serialized AST.
- void HandleTranslationUnit(ASTContext &Ctx) override {
- assert(M && VMContext && Builder);
- // Delete these on function exit.
- std::unique_ptr<llvm::LLVMContext> VMContext = std::move(this->VMContext);
- std::unique_ptr<llvm::Module> M = std::move(this->M);
- std::unique_ptr<CodeGen::CodeGenModule> Builder = std::move(this->Builder);
-
- if (Diags.hasErrorOccurred())
- return;
-
- M->setTargetTriple(Ctx.getTargetInfo().getTriple().getTriple());
- M->setDataLayout(Ctx.getTargetInfo().getDataLayout());
-
- // PCH files don't have a signature field in the control block,
- // but LLVM detects DWO CUs by looking for a non-zero DWO id.
- // We use the lower 64 bits for debug info.
- uint64_t Signature =
- Buffer->Signature
- ? (uint64_t)Buffer->Signature[1] << 32 | Buffer->Signature[0]
- : ~1ULL;
- Builder->getModuleDebugInfo()->setDwoId(Signature);
-
- // Finalize the Builder.
- if (Builder)
- Builder->Release();
-
- // Ensure the target exists.
- std::string Error;
- auto Triple = Ctx.getTargetInfo().getTriple();
- if (!llvm::TargetRegistry::lookupTarget(Triple.getTriple(), Error))
- llvm::report_fatal_error(Error);
-
- // Emit the serialized Clang AST into its own section.
- assert(Buffer->IsComplete && "serialization did not complete");
- auto &SerializedAST = Buffer->Data;
- auto Size = SerializedAST.size();
- auto Int8Ty = llvm::Type::getInt8Ty(*VMContext);
- auto *Ty = llvm::ArrayType::get(Int8Ty, Size);
- auto *Data = llvm::ConstantDataArray::getString(
- *VMContext, StringRef(SerializedAST.data(), Size),
- /*AddNull=*/false);
- auto *ASTSym = new llvm::GlobalVariable(
- *M, Ty, /*constant*/ true, llvm::GlobalVariable::InternalLinkage, Data,
- "__clang_ast");
- // The on-disk hashtable needs to be aligned.
- ASTSym->setAlignment(8);
-
- // Mach-O also needs a segment name.
- if (Triple.isOSBinFormatMachO())
- ASTSym->setSection("__CLANG,__clangast");
- // COFF has an eight character length limit.
- else if (Triple.isOSBinFormatCOFF())
- ASTSym->setSection("clangast");
- else
- ASTSym->setSection("__clangast");
-
- LLVM_DEBUG({
- // Print the IR for the PCH container to the debug output.
- llvm::SmallString<0> Buffer;
- clang::EmitBackendOutput(
- Diags, HeaderSearchOpts, CodeGenOpts, TargetOpts, LangOpts,
- Ctx.getTargetInfo().getDataLayout(), M.get(),
- BackendAction::Backend_EmitLL,
- llvm::make_unique<llvm::raw_svector_ostream>(Buffer));
- llvm::dbgs() << Buffer;
- });
-
- // Use the LLVM backend to emit the pch container.
- clang::EmitBackendOutput(Diags, HeaderSearchOpts, CodeGenOpts, TargetOpts,
- LangOpts, Ctx.getTargetInfo().getDataLayout(),
- M.get(), BackendAction::Backend_EmitObj,
- std::move(OS));
-
- // Free the memory for the temporary buffer.
- llvm::SmallVector<char, 0> Empty;
- SerializedAST = std::move(Empty);
- }
-};
-
-} // anonymous namespace
-
-std::unique_ptr<ASTConsumer>
-ObjectFilePCHContainerWriter::CreatePCHContainerGenerator(
- CompilerInstance &CI, const std::string &MainFileName,
- const std::string &OutputFileName,
- std::unique_ptr<llvm::raw_pwrite_stream> OS,
- std::shared_ptr<PCHBuffer> Buffer) const {
- return llvm::make_unique<PCHContainerGenerator>(
- CI, MainFileName, OutputFileName, std::move(OS), Buffer);
-}
-
-StringRef
-ObjectFilePCHContainerReader::ExtractPCH(llvm::MemoryBufferRef Buffer) const {
- StringRef PCH;
- auto OFOrErr = llvm::object::ObjectFile::createObjectFile(Buffer);
- if (OFOrErr) {
- auto &OF = OFOrErr.get();
- bool IsCOFF = isa<llvm::object::COFFObjectFile>(*OF);
- // Find the clang AST section in the container.
- for (auto &Section : OF->sections()) {
- StringRef Name;
- Section.getName(Name);
- if ((!IsCOFF && Name == "__clangast") || (IsCOFF && Name == "clangast")) {
- Section.getContents(PCH);
- return PCH;
- }
- }
- }
- handleAllErrors(OFOrErr.takeError(), [&](const llvm::ErrorInfoBase &EIB) {
- if (EIB.convertToErrorCode() ==
- llvm::object::object_error::invalid_file_type)
- // As a fallback, treat the buffer as a raw AST.
- PCH = Buffer.getBuffer();
- else
- EIB.log(llvm::errs());
- });
- return PCH;
-}