950 lines
39 KiB
C++
950 lines
39 KiB
C++
//===--- DIBuilder.cpp - Debug Information Builder ------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the DIBuilder.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/DIBuilder.h"
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#include "llvm/IR/IRBuilder.h"
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#include "LLVMContextImpl.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/BinaryFormat/Dwarf.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DebugInfo.h"
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#include "llvm/IR/IntrinsicInst.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/Debug.h"
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using namespace llvm;
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using namespace llvm::dwarf;
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cl::opt<bool>
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UseDbgAddr("use-dbg-addr",
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llvm::cl::desc("Use llvm.dbg.addr for all local variables"),
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cl::init(false), cl::Hidden);
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DIBuilder::DIBuilder(Module &m, bool AllowUnresolvedNodes, DICompileUnit *CU)
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: M(m), VMContext(M.getContext()), CUNode(CU),
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DeclareFn(nullptr), ValueFn(nullptr),
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AllowUnresolvedNodes(AllowUnresolvedNodes) {}
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void DIBuilder::trackIfUnresolved(MDNode *N) {
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if (!N)
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return;
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if (N->isResolved())
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return;
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assert(AllowUnresolvedNodes && "Cannot handle unresolved nodes");
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UnresolvedNodes.emplace_back(N);
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}
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void DIBuilder::finalizeSubprogram(DISubprogram *SP) {
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MDTuple *Temp = SP->getVariables().get();
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if (!Temp || !Temp->isTemporary())
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return;
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SmallVector<Metadata *, 4> Variables;
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auto PV = PreservedVariables.find(SP);
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if (PV != PreservedVariables.end())
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Variables.append(PV->second.begin(), PV->second.end());
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DINodeArray AV = getOrCreateArray(Variables);
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TempMDTuple(Temp)->replaceAllUsesWith(AV.get());
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}
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void DIBuilder::finalize() {
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if (!CUNode) {
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assert(!AllowUnresolvedNodes &&
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"creating type nodes without a CU is not supported");
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return;
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}
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CUNode->replaceEnumTypes(MDTuple::get(VMContext, AllEnumTypes));
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SmallVector<Metadata *, 16> RetainValues;
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// Declarations and definitions of the same type may be retained. Some
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// clients RAUW these pairs, leaving duplicates in the retained types
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// list. Use a set to remove the duplicates while we transform the
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// TrackingVHs back into Values.
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SmallPtrSet<Metadata *, 16> RetainSet;
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for (unsigned I = 0, E = AllRetainTypes.size(); I < E; I++)
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if (RetainSet.insert(AllRetainTypes[I]).second)
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RetainValues.push_back(AllRetainTypes[I]);
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if (!RetainValues.empty())
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CUNode->replaceRetainedTypes(MDTuple::get(VMContext, RetainValues));
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DISubprogramArray SPs = MDTuple::get(VMContext, AllSubprograms);
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for (auto *SP : SPs)
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finalizeSubprogram(SP);
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for (auto *N : RetainValues)
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if (auto *SP = dyn_cast<DISubprogram>(N))
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finalizeSubprogram(SP);
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if (!AllGVs.empty())
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CUNode->replaceGlobalVariables(MDTuple::get(VMContext, AllGVs));
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if (!AllImportedModules.empty())
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CUNode->replaceImportedEntities(MDTuple::get(
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VMContext, SmallVector<Metadata *, 16>(AllImportedModules.begin(),
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AllImportedModules.end())));
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for (const auto &I : AllMacrosPerParent) {
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// DIMacroNode's with nullptr parent are DICompileUnit direct children.
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if (!I.first) {
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CUNode->replaceMacros(MDTuple::get(VMContext, I.second.getArrayRef()));
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continue;
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}
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// Otherwise, it must be a temporary DIMacroFile that need to be resolved.
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auto *TMF = cast<DIMacroFile>(I.first);
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auto *MF = DIMacroFile::get(VMContext, dwarf::DW_MACINFO_start_file,
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TMF->getLine(), TMF->getFile(),
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getOrCreateMacroArray(I.second.getArrayRef()));
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replaceTemporary(llvm::TempDIMacroNode(TMF), MF);
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}
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// Now that all temp nodes have been replaced or deleted, resolve remaining
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// cycles.
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for (const auto &N : UnresolvedNodes)
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if (N && !N->isResolved())
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N->resolveCycles();
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UnresolvedNodes.clear();
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// Can't handle unresolved nodes anymore.
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AllowUnresolvedNodes = false;
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}
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/// If N is compile unit return NULL otherwise return N.
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static DIScope *getNonCompileUnitScope(DIScope *N) {
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if (!N || isa<DICompileUnit>(N))
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return nullptr;
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return cast<DIScope>(N);
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}
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DICompileUnit *DIBuilder::createCompileUnit(
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unsigned Lang, DIFile *File, StringRef Producer, bool isOptimized,
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StringRef Flags, unsigned RunTimeVer, StringRef SplitName,
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DICompileUnit::DebugEmissionKind Kind, uint64_t DWOId,
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bool SplitDebugInlining, bool DebugInfoForProfiling, bool GnuPubnames) {
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assert(((Lang <= dwarf::DW_LANG_Fortran08 && Lang >= dwarf::DW_LANG_C89) ||
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(Lang <= dwarf::DW_LANG_hi_user && Lang >= dwarf::DW_LANG_lo_user)) &&
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"Invalid Language tag");
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assert(!CUNode && "Can only make one compile unit per DIBuilder instance");
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CUNode = DICompileUnit::getDistinct(
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VMContext, Lang, File, Producer, isOptimized, Flags, RunTimeVer,
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SplitName, Kind, nullptr, nullptr, nullptr, nullptr, nullptr, DWOId,
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SplitDebugInlining, DebugInfoForProfiling, GnuPubnames);
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// Create a named metadata so that it is easier to find cu in a module.
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NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.cu");
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NMD->addOperand(CUNode);
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trackIfUnresolved(CUNode);
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return CUNode;
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}
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static DIImportedEntity *
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createImportedModule(LLVMContext &C, dwarf::Tag Tag, DIScope *Context,
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Metadata *NS, DIFile *File, unsigned Line, StringRef Name,
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SmallVectorImpl<TrackingMDNodeRef> &AllImportedModules) {
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if (Line)
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assert(File && "Source location has line number but no file");
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unsigned EntitiesCount = C.pImpl->DIImportedEntitys.size();
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auto *M =
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DIImportedEntity::get(C, Tag, Context, DINodeRef(NS), File, Line, Name);
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if (EntitiesCount < C.pImpl->DIImportedEntitys.size())
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// A new Imported Entity was just added to the context.
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// Add it to the Imported Modules list.
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AllImportedModules.emplace_back(M);
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return M;
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}
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DIImportedEntity *DIBuilder::createImportedModule(DIScope *Context,
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DINamespace *NS, DIFile *File,
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unsigned Line) {
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return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_module,
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Context, NS, File, Line, StringRef(),
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AllImportedModules);
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}
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DIImportedEntity *DIBuilder::createImportedModule(DIScope *Context,
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DIImportedEntity *NS,
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DIFile *File, unsigned Line) {
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return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_module,
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Context, NS, File, Line, StringRef(),
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AllImportedModules);
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}
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DIImportedEntity *DIBuilder::createImportedModule(DIScope *Context, DIModule *M,
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DIFile *File, unsigned Line) {
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return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_module,
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Context, M, File, Line, StringRef(),
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AllImportedModules);
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}
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DIImportedEntity *DIBuilder::createImportedDeclaration(DIScope *Context,
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DINode *Decl,
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DIFile *File,
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unsigned Line,
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StringRef Name) {
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// Make sure to use the unique identifier based metadata reference for
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// types that have one.
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return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_declaration,
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Context, Decl, File, Line, Name,
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AllImportedModules);
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}
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DIFile *DIBuilder::createFile(StringRef Filename, StringRef Directory,
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DIFile::ChecksumKind CSKind, StringRef Checksum) {
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return DIFile::get(VMContext, Filename, Directory, CSKind, Checksum);
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}
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DIMacro *DIBuilder::createMacro(DIMacroFile *Parent, unsigned LineNumber,
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unsigned MacroType, StringRef Name,
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StringRef Value) {
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assert(!Name.empty() && "Unable to create macro without name");
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assert((MacroType == dwarf::DW_MACINFO_undef ||
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MacroType == dwarf::DW_MACINFO_define) &&
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"Unexpected macro type");
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auto *M = DIMacro::get(VMContext, MacroType, LineNumber, Name, Value);
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AllMacrosPerParent[Parent].insert(M);
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return M;
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}
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DIMacroFile *DIBuilder::createTempMacroFile(DIMacroFile *Parent,
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unsigned LineNumber, DIFile *File) {
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auto *MF = DIMacroFile::getTemporary(VMContext, dwarf::DW_MACINFO_start_file,
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LineNumber, File, DIMacroNodeArray())
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.release();
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AllMacrosPerParent[Parent].insert(MF);
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// Add the new temporary DIMacroFile to the macro per parent map as a parent.
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// This is needed to assure DIMacroFile with no children to have an entry in
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// the map. Otherwise, it will not be resolved in DIBuilder::finalize().
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AllMacrosPerParent.insert({MF, {}});
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return MF;
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}
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DIEnumerator *DIBuilder::createEnumerator(StringRef Name, int64_t Val,
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bool IsUnsigned) {
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assert(!Name.empty() && "Unable to create enumerator without name");
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return DIEnumerator::get(VMContext, Val, IsUnsigned, Name);
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}
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DIBasicType *DIBuilder::createUnspecifiedType(StringRef Name) {
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assert(!Name.empty() && "Unable to create type without name");
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return DIBasicType::get(VMContext, dwarf::DW_TAG_unspecified_type, Name);
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}
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DIBasicType *DIBuilder::createNullPtrType() {
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return createUnspecifiedType("decltype(nullptr)");
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}
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DIBasicType *DIBuilder::createBasicType(StringRef Name, uint64_t SizeInBits,
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unsigned Encoding) {
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assert(!Name.empty() && "Unable to create type without name");
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return DIBasicType::get(VMContext, dwarf::DW_TAG_base_type, Name, SizeInBits,
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0, Encoding);
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}
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DIDerivedType *DIBuilder::createQualifiedType(unsigned Tag, DIType *FromTy) {
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return DIDerivedType::get(VMContext, Tag, "", nullptr, 0, nullptr, FromTy, 0,
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0, 0, None, DINode::FlagZero);
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}
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DIDerivedType *DIBuilder::createPointerType(
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DIType *PointeeTy,
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uint64_t SizeInBits,
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uint32_t AlignInBits,
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Optional<unsigned> DWARFAddressSpace,
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StringRef Name) {
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// FIXME: Why is there a name here?
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return DIDerivedType::get(VMContext, dwarf::DW_TAG_pointer_type, Name,
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nullptr, 0, nullptr, PointeeTy, SizeInBits,
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AlignInBits, 0, DWARFAddressSpace,
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DINode::FlagZero);
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}
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DIDerivedType *DIBuilder::createMemberPointerType(DIType *PointeeTy,
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DIType *Base,
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uint64_t SizeInBits,
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uint32_t AlignInBits,
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DINode::DIFlags Flags) {
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return DIDerivedType::get(VMContext, dwarf::DW_TAG_ptr_to_member_type, "",
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nullptr, 0, nullptr, PointeeTy, SizeInBits,
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AlignInBits, 0, None, Flags, Base);
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}
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DIDerivedType *DIBuilder::createReferenceType(
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unsigned Tag, DIType *RTy,
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uint64_t SizeInBits,
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uint32_t AlignInBits,
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Optional<unsigned> DWARFAddressSpace) {
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assert(RTy && "Unable to create reference type");
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return DIDerivedType::get(VMContext, Tag, "", nullptr, 0, nullptr, RTy,
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SizeInBits, AlignInBits, 0, DWARFAddressSpace,
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DINode::FlagZero);
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}
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DIDerivedType *DIBuilder::createTypedef(DIType *Ty, StringRef Name,
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DIFile *File, unsigned LineNo,
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DIScope *Context) {
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return DIDerivedType::get(VMContext, dwarf::DW_TAG_typedef, Name, File,
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LineNo, getNonCompileUnitScope(Context), Ty, 0, 0,
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0, None, DINode::FlagZero);
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}
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DIDerivedType *DIBuilder::createFriend(DIType *Ty, DIType *FriendTy) {
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assert(Ty && "Invalid type!");
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assert(FriendTy && "Invalid friend type!");
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return DIDerivedType::get(VMContext, dwarf::DW_TAG_friend, "", nullptr, 0, Ty,
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FriendTy, 0, 0, 0, None, DINode::FlagZero);
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}
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DIDerivedType *DIBuilder::createInheritance(DIType *Ty, DIType *BaseTy,
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uint64_t BaseOffset,
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DINode::DIFlags Flags) {
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assert(Ty && "Unable to create inheritance");
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return DIDerivedType::get(VMContext, dwarf::DW_TAG_inheritance, "", nullptr,
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0, Ty, BaseTy, 0, 0, BaseOffset, None, Flags);
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}
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DIDerivedType *DIBuilder::createMemberType(DIScope *Scope, StringRef Name,
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DIFile *File, unsigned LineNumber,
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uint64_t SizeInBits,
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uint32_t AlignInBits,
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uint64_t OffsetInBits,
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DINode::DIFlags Flags, DIType *Ty) {
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return DIDerivedType::get(VMContext, dwarf::DW_TAG_member, Name, File,
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LineNumber, getNonCompileUnitScope(Scope), Ty,
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SizeInBits, AlignInBits, OffsetInBits, None, Flags);
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}
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static ConstantAsMetadata *getConstantOrNull(Constant *C) {
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if (C)
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return ConstantAsMetadata::get(C);
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return nullptr;
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}
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DIDerivedType *DIBuilder::createVariantMemberType(DIScope *Scope, StringRef Name,
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DIFile *File, unsigned LineNumber,
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uint64_t SizeInBits,
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uint32_t AlignInBits,
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uint64_t OffsetInBits,
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Constant *Discriminant,
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DINode::DIFlags Flags, DIType *Ty) {
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return DIDerivedType::get(VMContext, dwarf::DW_TAG_member, Name, File,
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LineNumber, getNonCompileUnitScope(Scope), Ty,
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SizeInBits, AlignInBits, OffsetInBits, None, Flags,
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getConstantOrNull(Discriminant));
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}
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DIDerivedType *DIBuilder::createBitFieldMemberType(
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DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber,
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uint64_t SizeInBits, uint64_t OffsetInBits, uint64_t StorageOffsetInBits,
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DINode::DIFlags Flags, DIType *Ty) {
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Flags |= DINode::FlagBitField;
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return DIDerivedType::get(
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VMContext, dwarf::DW_TAG_member, Name, File, LineNumber,
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getNonCompileUnitScope(Scope), Ty, SizeInBits, /* AlignInBits */ 0,
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OffsetInBits, None, Flags,
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ConstantAsMetadata::get(ConstantInt::get(IntegerType::get(VMContext, 64),
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StorageOffsetInBits)));
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}
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DIDerivedType *
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DIBuilder::createStaticMemberType(DIScope *Scope, StringRef Name, DIFile *File,
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unsigned LineNumber, DIType *Ty,
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DINode::DIFlags Flags, llvm::Constant *Val,
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uint32_t AlignInBits) {
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Flags |= DINode::FlagStaticMember;
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return DIDerivedType::get(VMContext, dwarf::DW_TAG_member, Name, File,
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LineNumber, getNonCompileUnitScope(Scope), Ty, 0,
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AlignInBits, 0, None, Flags,
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getConstantOrNull(Val));
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}
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DIDerivedType *
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DIBuilder::createObjCIVar(StringRef Name, DIFile *File, unsigned LineNumber,
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uint64_t SizeInBits, uint32_t AlignInBits,
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uint64_t OffsetInBits, DINode::DIFlags Flags,
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DIType *Ty, MDNode *PropertyNode) {
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return DIDerivedType::get(VMContext, dwarf::DW_TAG_member, Name, File,
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LineNumber, getNonCompileUnitScope(File), Ty,
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SizeInBits, AlignInBits, OffsetInBits, None, Flags,
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PropertyNode);
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}
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DIObjCProperty *
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DIBuilder::createObjCProperty(StringRef Name, DIFile *File, unsigned LineNumber,
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StringRef GetterName, StringRef SetterName,
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unsigned PropertyAttributes, DIType *Ty) {
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return DIObjCProperty::get(VMContext, Name, File, LineNumber, GetterName,
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SetterName, PropertyAttributes, Ty);
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}
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DITemplateTypeParameter *
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DIBuilder::createTemplateTypeParameter(DIScope *Context, StringRef Name,
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DIType *Ty) {
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assert((!Context || isa<DICompileUnit>(Context)) && "Expected compile unit");
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return DITemplateTypeParameter::get(VMContext, Name, Ty);
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}
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static DITemplateValueParameter *
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createTemplateValueParameterHelper(LLVMContext &VMContext, unsigned Tag,
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DIScope *Context, StringRef Name, DIType *Ty,
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Metadata *MD) {
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assert((!Context || isa<DICompileUnit>(Context)) && "Expected compile unit");
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return DITemplateValueParameter::get(VMContext, Tag, Name, Ty, MD);
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}
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DITemplateValueParameter *
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DIBuilder::createTemplateValueParameter(DIScope *Context, StringRef Name,
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DIType *Ty, Constant *Val) {
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return createTemplateValueParameterHelper(
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VMContext, dwarf::DW_TAG_template_value_parameter, Context, Name, Ty,
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getConstantOrNull(Val));
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}
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DITemplateValueParameter *
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DIBuilder::createTemplateTemplateParameter(DIScope *Context, StringRef Name,
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DIType *Ty, StringRef Val) {
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return createTemplateValueParameterHelper(
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VMContext, dwarf::DW_TAG_GNU_template_template_param, Context, Name, Ty,
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MDString::get(VMContext, Val));
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}
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DITemplateValueParameter *
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DIBuilder::createTemplateParameterPack(DIScope *Context, StringRef Name,
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DIType *Ty, DINodeArray Val) {
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return createTemplateValueParameterHelper(
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VMContext, dwarf::DW_TAG_GNU_template_parameter_pack, Context, Name, Ty,
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Val.get());
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}
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DICompositeType *DIBuilder::createClassType(
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DIScope *Context, StringRef Name, DIFile *File, unsigned LineNumber,
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uint64_t SizeInBits, uint32_t AlignInBits, uint64_t OffsetInBits,
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DINode::DIFlags Flags, DIType *DerivedFrom, DINodeArray Elements,
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DIType *VTableHolder, MDNode *TemplateParams, StringRef UniqueIdentifier) {
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assert((!Context || isa<DIScope>(Context)) &&
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"createClassType should be called with a valid Context");
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auto *R = DICompositeType::get(
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VMContext, dwarf::DW_TAG_structure_type, Name, File, LineNumber,
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getNonCompileUnitScope(Context), DerivedFrom, SizeInBits, AlignInBits,
|
|
OffsetInBits, Flags, Elements, 0, VTableHolder,
|
|
cast_or_null<MDTuple>(TemplateParams), UniqueIdentifier);
|
|
trackIfUnresolved(R);
|
|
return R;
|
|
}
|
|
|
|
DICompositeType *DIBuilder::createStructType(
|
|
DIScope *Context, StringRef Name, DIFile *File, unsigned LineNumber,
|
|
uint64_t SizeInBits, uint32_t AlignInBits, DINode::DIFlags Flags,
|
|
DIType *DerivedFrom, DINodeArray Elements, unsigned RunTimeLang,
|
|
DIType *VTableHolder, StringRef UniqueIdentifier) {
|
|
auto *R = DICompositeType::get(
|
|
VMContext, dwarf::DW_TAG_structure_type, Name, File, LineNumber,
|
|
getNonCompileUnitScope(Context), DerivedFrom, SizeInBits, AlignInBits, 0,
|
|
Flags, Elements, RunTimeLang, VTableHolder, nullptr, UniqueIdentifier);
|
|
trackIfUnresolved(R);
|
|
return R;
|
|
}
|
|
|
|
DICompositeType *DIBuilder::createUnionType(
|
|
DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber,
|
|
uint64_t SizeInBits, uint32_t AlignInBits, DINode::DIFlags Flags,
|
|
DINodeArray Elements, unsigned RunTimeLang, StringRef UniqueIdentifier) {
|
|
auto *R = DICompositeType::get(
|
|
VMContext, dwarf::DW_TAG_union_type, Name, File, LineNumber,
|
|
getNonCompileUnitScope(Scope), nullptr, SizeInBits, AlignInBits, 0, Flags,
|
|
Elements, RunTimeLang, nullptr, nullptr, UniqueIdentifier);
|
|
trackIfUnresolved(R);
|
|
return R;
|
|
}
|
|
|
|
DICompositeType *DIBuilder::createVariantPart(
|
|
DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber,
|
|
uint64_t SizeInBits, uint32_t AlignInBits, DINode::DIFlags Flags,
|
|
DIDerivedType *Discriminator, DINodeArray Elements, StringRef UniqueIdentifier) {
|
|
auto *R = DICompositeType::get(
|
|
VMContext, dwarf::DW_TAG_variant_part, Name, File, LineNumber,
|
|
getNonCompileUnitScope(Scope), nullptr, SizeInBits, AlignInBits, 0, Flags,
|
|
Elements, 0, nullptr, nullptr, UniqueIdentifier, Discriminator);
|
|
trackIfUnresolved(R);
|
|
return R;
|
|
}
|
|
|
|
DISubroutineType *DIBuilder::createSubroutineType(DITypeRefArray ParameterTypes,
|
|
DINode::DIFlags Flags,
|
|
unsigned CC) {
|
|
return DISubroutineType::get(VMContext, Flags, CC, ParameterTypes);
|
|
}
|
|
|
|
DICompositeType *DIBuilder::createEnumerationType(
|
|
DIScope *Scope, StringRef Name, DIFile *File, unsigned LineNumber,
|
|
uint64_t SizeInBits, uint32_t AlignInBits, DINodeArray Elements,
|
|
DIType *UnderlyingType, StringRef UniqueIdentifier, bool IsFixed) {
|
|
auto *CTy = DICompositeType::get(
|
|
VMContext, dwarf::DW_TAG_enumeration_type, Name, File, LineNumber,
|
|
getNonCompileUnitScope(Scope), UnderlyingType, SizeInBits, AlignInBits, 0,
|
|
IsFixed ? DINode::FlagFixedEnum : DINode::FlagZero, Elements, 0, nullptr,
|
|
nullptr, UniqueIdentifier);
|
|
AllEnumTypes.push_back(CTy);
|
|
trackIfUnresolved(CTy);
|
|
return CTy;
|
|
}
|
|
|
|
DICompositeType *DIBuilder::createArrayType(uint64_t Size,
|
|
uint32_t AlignInBits, DIType *Ty,
|
|
DINodeArray Subscripts) {
|
|
auto *R = DICompositeType::get(VMContext, dwarf::DW_TAG_array_type, "",
|
|
nullptr, 0, nullptr, Ty, Size, AlignInBits, 0,
|
|
DINode::FlagZero, Subscripts, 0, nullptr);
|
|
trackIfUnresolved(R);
|
|
return R;
|
|
}
|
|
|
|
DICompositeType *DIBuilder::createVectorType(uint64_t Size,
|
|
uint32_t AlignInBits, DIType *Ty,
|
|
DINodeArray Subscripts) {
|
|
auto *R = DICompositeType::get(VMContext, dwarf::DW_TAG_array_type, "",
|
|
nullptr, 0, nullptr, Ty, Size, AlignInBits, 0,
|
|
DINode::FlagVector, Subscripts, 0, nullptr);
|
|
trackIfUnresolved(R);
|
|
return R;
|
|
}
|
|
|
|
static DIType *createTypeWithFlags(LLVMContext &Context, DIType *Ty,
|
|
DINode::DIFlags FlagsToSet) {
|
|
auto NewTy = Ty->clone();
|
|
NewTy->setFlags(NewTy->getFlags() | FlagsToSet);
|
|
return MDNode::replaceWithUniqued(std::move(NewTy));
|
|
}
|
|
|
|
DIType *DIBuilder::createArtificialType(DIType *Ty) {
|
|
// FIXME: Restrict this to the nodes where it's valid.
|
|
if (Ty->isArtificial())
|
|
return Ty;
|
|
return createTypeWithFlags(VMContext, Ty, DINode::FlagArtificial);
|
|
}
|
|
|
|
DIType *DIBuilder::createObjectPointerType(DIType *Ty) {
|
|
// FIXME: Restrict this to the nodes where it's valid.
|
|
if (Ty->isObjectPointer())
|
|
return Ty;
|
|
DINode::DIFlags Flags = DINode::FlagObjectPointer | DINode::FlagArtificial;
|
|
return createTypeWithFlags(VMContext, Ty, Flags);
|
|
}
|
|
|
|
void DIBuilder::retainType(DIScope *T) {
|
|
assert(T && "Expected non-null type");
|
|
assert((isa<DIType>(T) || (isa<DISubprogram>(T) &&
|
|
cast<DISubprogram>(T)->isDefinition() == false)) &&
|
|
"Expected type or subprogram declaration");
|
|
AllRetainTypes.emplace_back(T);
|
|
}
|
|
|
|
DIBasicType *DIBuilder::createUnspecifiedParameter() { return nullptr; }
|
|
|
|
DICompositeType *
|
|
DIBuilder::createForwardDecl(unsigned Tag, StringRef Name, DIScope *Scope,
|
|
DIFile *F, unsigned Line, unsigned RuntimeLang,
|
|
uint64_t SizeInBits, uint32_t AlignInBits,
|
|
StringRef UniqueIdentifier) {
|
|
// FIXME: Define in terms of createReplaceableForwardDecl() by calling
|
|
// replaceWithUniqued().
|
|
auto *RetTy = DICompositeType::get(
|
|
VMContext, Tag, Name, F, Line, getNonCompileUnitScope(Scope), nullptr,
|
|
SizeInBits, AlignInBits, 0, DINode::FlagFwdDecl, nullptr, RuntimeLang,
|
|
nullptr, nullptr, UniqueIdentifier);
|
|
trackIfUnresolved(RetTy);
|
|
return RetTy;
|
|
}
|
|
|
|
DICompositeType *DIBuilder::createReplaceableCompositeType(
|
|
unsigned Tag, StringRef Name, DIScope *Scope, DIFile *F, unsigned Line,
|
|
unsigned RuntimeLang, uint64_t SizeInBits, uint32_t AlignInBits,
|
|
DINode::DIFlags Flags, StringRef UniqueIdentifier) {
|
|
auto *RetTy =
|
|
DICompositeType::getTemporary(
|
|
VMContext, Tag, Name, F, Line, getNonCompileUnitScope(Scope), nullptr,
|
|
SizeInBits, AlignInBits, 0, Flags, nullptr, RuntimeLang, nullptr,
|
|
nullptr, UniqueIdentifier)
|
|
.release();
|
|
trackIfUnresolved(RetTy);
|
|
return RetTy;
|
|
}
|
|
|
|
DINodeArray DIBuilder::getOrCreateArray(ArrayRef<Metadata *> Elements) {
|
|
return MDTuple::get(VMContext, Elements);
|
|
}
|
|
|
|
DIMacroNodeArray
|
|
DIBuilder::getOrCreateMacroArray(ArrayRef<Metadata *> Elements) {
|
|
return MDTuple::get(VMContext, Elements);
|
|
}
|
|
|
|
DITypeRefArray DIBuilder::getOrCreateTypeArray(ArrayRef<Metadata *> Elements) {
|
|
SmallVector<llvm::Metadata *, 16> Elts;
|
|
for (unsigned i = 0, e = Elements.size(); i != e; ++i) {
|
|
if (Elements[i] && isa<MDNode>(Elements[i]))
|
|
Elts.push_back(cast<DIType>(Elements[i]));
|
|
else
|
|
Elts.push_back(Elements[i]);
|
|
}
|
|
return DITypeRefArray(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
DISubrange *DIBuilder::getOrCreateSubrange(int64_t Lo, int64_t Count) {
|
|
return DISubrange::get(VMContext, Count, Lo);
|
|
}
|
|
|
|
DISubrange *DIBuilder::getOrCreateSubrange(int64_t Lo, Metadata *CountNode) {
|
|
return DISubrange::get(VMContext, CountNode, Lo);
|
|
}
|
|
|
|
static void checkGlobalVariableScope(DIScope *Context) {
|
|
#ifndef NDEBUG
|
|
if (auto *CT =
|
|
dyn_cast_or_null<DICompositeType>(getNonCompileUnitScope(Context)))
|
|
assert(CT->getIdentifier().empty() &&
|
|
"Context of a global variable should not be a type with identifier");
|
|
#endif
|
|
}
|
|
|
|
DIGlobalVariableExpression *DIBuilder::createGlobalVariableExpression(
|
|
DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *F,
|
|
unsigned LineNumber, DIType *Ty, bool isLocalToUnit, DIExpression *Expr,
|
|
MDNode *Decl, uint32_t AlignInBits) {
|
|
checkGlobalVariableScope(Context);
|
|
|
|
auto *GV = DIGlobalVariable::getDistinct(
|
|
VMContext, cast_or_null<DIScope>(Context), Name, LinkageName, F,
|
|
LineNumber, Ty, isLocalToUnit, true, cast_or_null<DIDerivedType>(Decl),
|
|
AlignInBits);
|
|
if (!Expr)
|
|
Expr = createExpression();
|
|
auto *N = DIGlobalVariableExpression::get(VMContext, GV, Expr);
|
|
AllGVs.push_back(N);
|
|
return N;
|
|
}
|
|
|
|
DIGlobalVariable *DIBuilder::createTempGlobalVariableFwdDecl(
|
|
DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *F,
|
|
unsigned LineNumber, DIType *Ty, bool isLocalToUnit, MDNode *Decl,
|
|
uint32_t AlignInBits) {
|
|
checkGlobalVariableScope(Context);
|
|
|
|
return DIGlobalVariable::getTemporary(
|
|
VMContext, cast_or_null<DIScope>(Context), Name, LinkageName, F,
|
|
LineNumber, Ty, isLocalToUnit, false,
|
|
cast_or_null<DIDerivedType>(Decl), AlignInBits)
|
|
.release();
|
|
}
|
|
|
|
static DILocalVariable *createLocalVariable(
|
|
LLVMContext &VMContext,
|
|
DenseMap<MDNode *, SmallVector<TrackingMDNodeRef, 1>> &PreservedVariables,
|
|
DIScope *Scope, StringRef Name, unsigned ArgNo, DIFile *File,
|
|
unsigned LineNo, DIType *Ty, bool AlwaysPreserve, DINode::DIFlags Flags,
|
|
uint32_t AlignInBits) {
|
|
// FIXME: Why getNonCompileUnitScope()?
|
|
// FIXME: Why is "!Context" okay here?
|
|
// FIXME: Why doesn't this check for a subprogram or lexical block (AFAICT
|
|
// the only valid scopes)?
|
|
DIScope *Context = getNonCompileUnitScope(Scope);
|
|
|
|
auto *Node =
|
|
DILocalVariable::get(VMContext, cast_or_null<DILocalScope>(Context), Name,
|
|
File, LineNo, Ty, ArgNo, Flags, AlignInBits);
|
|
if (AlwaysPreserve) {
|
|
// The optimizer may remove local variables. If there is an interest
|
|
// to preserve variable info in such situation then stash it in a
|
|
// named mdnode.
|
|
DISubprogram *Fn = getDISubprogram(Scope);
|
|
assert(Fn && "Missing subprogram for local variable");
|
|
PreservedVariables[Fn].emplace_back(Node);
|
|
}
|
|
return Node;
|
|
}
|
|
|
|
DILocalVariable *DIBuilder::createAutoVariable(DIScope *Scope, StringRef Name,
|
|
DIFile *File, unsigned LineNo,
|
|
DIType *Ty, bool AlwaysPreserve,
|
|
DINode::DIFlags Flags,
|
|
uint32_t AlignInBits) {
|
|
return createLocalVariable(VMContext, PreservedVariables, Scope, Name,
|
|
/* ArgNo */ 0, File, LineNo, Ty, AlwaysPreserve,
|
|
Flags, AlignInBits);
|
|
}
|
|
|
|
DILocalVariable *DIBuilder::createParameterVariable(
|
|
DIScope *Scope, StringRef Name, unsigned ArgNo, DIFile *File,
|
|
unsigned LineNo, DIType *Ty, bool AlwaysPreserve, DINode::DIFlags Flags) {
|
|
assert(ArgNo && "Expected non-zero argument number for parameter");
|
|
return createLocalVariable(VMContext, PreservedVariables, Scope, Name, ArgNo,
|
|
File, LineNo, Ty, AlwaysPreserve, Flags,
|
|
/* AlignInBits */0);
|
|
}
|
|
|
|
DIExpression *DIBuilder::createExpression(ArrayRef<uint64_t> Addr) {
|
|
return DIExpression::get(VMContext, Addr);
|
|
}
|
|
|
|
DIExpression *DIBuilder::createExpression(ArrayRef<int64_t> Signed) {
|
|
// TODO: Remove the callers of this signed version and delete.
|
|
SmallVector<uint64_t, 8> Addr(Signed.begin(), Signed.end());
|
|
return createExpression(Addr);
|
|
}
|
|
|
|
template <class... Ts>
|
|
static DISubprogram *getSubprogram(bool IsDistinct, Ts &&... Args) {
|
|
if (IsDistinct)
|
|
return DISubprogram::getDistinct(std::forward<Ts>(Args)...);
|
|
return DISubprogram::get(std::forward<Ts>(Args)...);
|
|
}
|
|
|
|
DISubprogram *DIBuilder::createFunction(
|
|
DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *File,
|
|
unsigned LineNo, DISubroutineType *Ty, bool isLocalToUnit,
|
|
bool isDefinition, unsigned ScopeLine, DINode::DIFlags Flags,
|
|
bool isOptimized, DITemplateParameterArray TParams, DISubprogram *Decl,
|
|
DITypeArray ThrownTypes) {
|
|
auto *Node = getSubprogram(
|
|
/* IsDistinct = */ isDefinition, VMContext,
|
|
getNonCompileUnitScope(Context), Name, LinkageName, File, LineNo, Ty,
|
|
isLocalToUnit, isDefinition, ScopeLine, nullptr, 0, 0, 0, Flags,
|
|
isOptimized, isDefinition ? CUNode : nullptr, TParams, Decl,
|
|
MDTuple::getTemporary(VMContext, None).release(), ThrownTypes);
|
|
|
|
if (isDefinition)
|
|
AllSubprograms.push_back(Node);
|
|
trackIfUnresolved(Node);
|
|
return Node;
|
|
}
|
|
|
|
DISubprogram *DIBuilder::createTempFunctionFwdDecl(
|
|
DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *File,
|
|
unsigned LineNo, DISubroutineType *Ty, bool isLocalToUnit,
|
|
bool isDefinition, unsigned ScopeLine, DINode::DIFlags Flags,
|
|
bool isOptimized, DITemplateParameterArray TParams, DISubprogram *Decl,
|
|
DITypeArray ThrownTypes) {
|
|
return DISubprogram::getTemporary(
|
|
VMContext, getNonCompileUnitScope(Context), Name, LinkageName,
|
|
File, LineNo, Ty, isLocalToUnit, isDefinition, ScopeLine, nullptr,
|
|
0, 0, 0, Flags, isOptimized, isDefinition ? CUNode : nullptr,
|
|
TParams, Decl, nullptr, ThrownTypes)
|
|
.release();
|
|
}
|
|
|
|
DISubprogram *DIBuilder::createMethod(
|
|
DIScope *Context, StringRef Name, StringRef LinkageName, DIFile *F,
|
|
unsigned LineNo, DISubroutineType *Ty, bool isLocalToUnit,
|
|
bool isDefinition, unsigned VK, unsigned VIndex, int ThisAdjustment,
|
|
DIType *VTableHolder, DINode::DIFlags Flags, bool isOptimized,
|
|
DITemplateParameterArray TParams, DITypeArray ThrownTypes) {
|
|
assert(getNonCompileUnitScope(Context) &&
|
|
"Methods should have both a Context and a context that isn't "
|
|
"the compile unit.");
|
|
// FIXME: Do we want to use different scope/lines?
|
|
auto *SP = getSubprogram(
|
|
/* IsDistinct = */ isDefinition, VMContext, cast<DIScope>(Context), Name,
|
|
LinkageName, F, LineNo, Ty, isLocalToUnit, isDefinition, LineNo,
|
|
VTableHolder, VK, VIndex, ThisAdjustment, Flags, isOptimized,
|
|
isDefinition ? CUNode : nullptr, TParams, nullptr, nullptr, ThrownTypes);
|
|
|
|
if (isDefinition)
|
|
AllSubprograms.push_back(SP);
|
|
trackIfUnresolved(SP);
|
|
return SP;
|
|
}
|
|
|
|
DINamespace *DIBuilder::createNameSpace(DIScope *Scope, StringRef Name,
|
|
bool ExportSymbols) {
|
|
|
|
// It is okay to *not* make anonymous top-level namespaces distinct, because
|
|
// all nodes that have an anonymous namespace as their parent scope are
|
|
// guaranteed to be unique and/or are linked to their containing
|
|
// DICompileUnit. This decision is an explicit tradeoff of link time versus
|
|
// memory usage versus code simplicity and may get revisited in the future.
|
|
return DINamespace::get(VMContext, getNonCompileUnitScope(Scope), Name,
|
|
ExportSymbols);
|
|
}
|
|
|
|
DIModule *DIBuilder::createModule(DIScope *Scope, StringRef Name,
|
|
StringRef ConfigurationMacros,
|
|
StringRef IncludePath,
|
|
StringRef ISysRoot) {
|
|
return DIModule::get(VMContext, getNonCompileUnitScope(Scope), Name,
|
|
ConfigurationMacros, IncludePath, ISysRoot);
|
|
}
|
|
|
|
DILexicalBlockFile *DIBuilder::createLexicalBlockFile(DIScope *Scope,
|
|
DIFile *File,
|
|
unsigned Discriminator) {
|
|
return DILexicalBlockFile::get(VMContext, Scope, File, Discriminator);
|
|
}
|
|
|
|
DILexicalBlock *DIBuilder::createLexicalBlock(DIScope *Scope, DIFile *File,
|
|
unsigned Line, unsigned Col) {
|
|
// Make these distinct, to avoid merging two lexical blocks on the same
|
|
// file/line/column.
|
|
return DILexicalBlock::getDistinct(VMContext, getNonCompileUnitScope(Scope),
|
|
File, Line, Col);
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDeclare(Value *Storage, DILocalVariable *VarInfo,
|
|
DIExpression *Expr, const DILocation *DL,
|
|
Instruction *InsertBefore) {
|
|
return insertDeclare(Storage, VarInfo, Expr, DL, InsertBefore->getParent(),
|
|
InsertBefore);
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDeclare(Value *Storage, DILocalVariable *VarInfo,
|
|
DIExpression *Expr, const DILocation *DL,
|
|
BasicBlock *InsertAtEnd) {
|
|
// If this block already has a terminator then insert this intrinsic before
|
|
// the terminator. Otherwise, put it at the end of the block.
|
|
Instruction *InsertBefore = InsertAtEnd->getTerminator();
|
|
return insertDeclare(Storage, VarInfo, Expr, DL, InsertAtEnd, InsertBefore);
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V,
|
|
DILocalVariable *VarInfo,
|
|
DIExpression *Expr,
|
|
const DILocation *DL,
|
|
Instruction *InsertBefore) {
|
|
return insertDbgValueIntrinsic(
|
|
V, VarInfo, Expr, DL, InsertBefore ? InsertBefore->getParent() : nullptr,
|
|
InsertBefore);
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V,
|
|
DILocalVariable *VarInfo,
|
|
DIExpression *Expr,
|
|
const DILocation *DL,
|
|
BasicBlock *InsertAtEnd) {
|
|
return insertDbgValueIntrinsic(V, VarInfo, Expr, DL, InsertAtEnd, nullptr);
|
|
}
|
|
|
|
/// Return an IRBuilder for inserting dbg.declare and dbg.value intrinsics. This
|
|
/// abstracts over the various ways to specify an insert position.
|
|
static IRBuilder<> getIRBForDbgInsertion(const DILocation *DL,
|
|
BasicBlock *InsertBB,
|
|
Instruction *InsertBefore) {
|
|
IRBuilder<> B(DL->getContext());
|
|
if (InsertBefore)
|
|
B.SetInsertPoint(InsertBefore);
|
|
else if (InsertBB)
|
|
B.SetInsertPoint(InsertBB);
|
|
B.SetCurrentDebugLocation(DL);
|
|
return B;
|
|
}
|
|
|
|
static Value *getDbgIntrinsicValueImpl(LLVMContext &VMContext, Value *V) {
|
|
assert(V && "no value passed to dbg intrinsic");
|
|
return MetadataAsValue::get(VMContext, ValueAsMetadata::get(V));
|
|
}
|
|
|
|
static Function *getDeclareIntrin(Module &M) {
|
|
return Intrinsic::getDeclaration(&M, UseDbgAddr ? Intrinsic::dbg_addr
|
|
: Intrinsic::dbg_declare);
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDeclare(Value *Storage, DILocalVariable *VarInfo,
|
|
DIExpression *Expr, const DILocation *DL,
|
|
BasicBlock *InsertBB, Instruction *InsertBefore) {
|
|
assert(VarInfo && "empty or invalid DILocalVariable* passed to dbg.declare");
|
|
assert(DL && "Expected debug loc");
|
|
assert(DL->getScope()->getSubprogram() ==
|
|
VarInfo->getScope()->getSubprogram() &&
|
|
"Expected matching subprograms");
|
|
if (!DeclareFn)
|
|
DeclareFn = getDeclareIntrin(M);
|
|
|
|
trackIfUnresolved(VarInfo);
|
|
trackIfUnresolved(Expr);
|
|
Value *Args[] = {getDbgIntrinsicValueImpl(VMContext, Storage),
|
|
MetadataAsValue::get(VMContext, VarInfo),
|
|
MetadataAsValue::get(VMContext, Expr)};
|
|
|
|
IRBuilder<> B = getIRBForDbgInsertion(DL, InsertBB, InsertBefore);
|
|
return B.CreateCall(DeclareFn, Args);
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDbgValueIntrinsic(
|
|
Value *V, DILocalVariable *VarInfo, DIExpression *Expr,
|
|
const DILocation *DL, BasicBlock *InsertBB, Instruction *InsertBefore) {
|
|
assert(V && "no value passed to dbg.value");
|
|
assert(VarInfo && "empty or invalid DILocalVariable* passed to dbg.value");
|
|
assert(DL && "Expected debug loc");
|
|
assert(DL->getScope()->getSubprogram() ==
|
|
VarInfo->getScope()->getSubprogram() &&
|
|
"Expected matching subprograms");
|
|
if (!ValueFn)
|
|
ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value);
|
|
|
|
trackIfUnresolved(VarInfo);
|
|
trackIfUnresolved(Expr);
|
|
Value *Args[] = {getDbgIntrinsicValueImpl(VMContext, V),
|
|
MetadataAsValue::get(VMContext, VarInfo),
|
|
MetadataAsValue::get(VMContext, Expr)};
|
|
|
|
IRBuilder<> B = getIRBForDbgInsertion(DL, InsertBB, InsertBefore);
|
|
return B.CreateCall(ValueFn, Args);
|
|
}
|
|
|
|
void DIBuilder::replaceVTableHolder(DICompositeType *&T,
|
|
DIType *VTableHolder) {
|
|
{
|
|
TypedTrackingMDRef<DICompositeType> N(T);
|
|
N->replaceVTableHolder(VTableHolder);
|
|
T = N.get();
|
|
}
|
|
|
|
// If this didn't create a self-reference, just return.
|
|
if (T != VTableHolder)
|
|
return;
|
|
|
|
// Look for unresolved operands. T will drop RAUW support, orphaning any
|
|
// cycles underneath it.
|
|
if (T->isResolved())
|
|
for (const MDOperand &O : T->operands())
|
|
if (auto *N = dyn_cast_or_null<MDNode>(O))
|
|
trackIfUnresolved(N);
|
|
}
|
|
|
|
void DIBuilder::replaceArrays(DICompositeType *&T, DINodeArray Elements,
|
|
DINodeArray TParams) {
|
|
{
|
|
TypedTrackingMDRef<DICompositeType> N(T);
|
|
if (Elements)
|
|
N->replaceElements(Elements);
|
|
if (TParams)
|
|
N->replaceTemplateParams(DITemplateParameterArray(TParams));
|
|
T = N.get();
|
|
}
|
|
|
|
// If T isn't resolved, there's no problem.
|
|
if (!T->isResolved())
|
|
return;
|
|
|
|
// If T is resolved, it may be due to a self-reference cycle. Track the
|
|
// arrays explicitly if they're unresolved, or else the cycles will be
|
|
// orphaned.
|
|
if (Elements)
|
|
trackIfUnresolved(Elements.get());
|
|
if (TParams)
|
|
trackIfUnresolved(TParams.get());
|
|
}
|