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8c12617ac6
This reverts commit r242302. External type refs of this form were never used by any LLVM frontend so this is effectively dead code. (They were introduced to support clang module debug info, but in the end we came up with a better design that doesn't use this feature at all.) rdar://problem/25897929 Differential Revision: https://reviews.llvm.org/D30917 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297684 91177308-0d34-0410-b5e6-96231b3b80d8
902 lines
38 KiB
C++
902 lines
38 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/ADT/STLExtras.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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#include "llvm/Support/Dwarf.h"
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#include "LLVMContextImpl.h"
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using namespace llvm;
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using namespace llvm::dwarf;
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DIBuilder::DIBuilder(Module &m, bool AllowUnresolvedNodes)
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: M(m), VMContext(M.getContext()), CUNode(nullptr),
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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::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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auto resolveVariables = [&](DISubprogram *SP) {
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MDTuple *Temp = SP->getVariables().get();
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if (!Temp)
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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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for (auto *SP : SPs)
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resolveVariables(SP);
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for (auto *N : RetainValues)
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if (auto *SP = dyn_cast<DISubprogram>(N))
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resolveVariables(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) {
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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);
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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, unsigned Line, StringRef Name,
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SmallVectorImpl<TrackingMDNodeRef> &AllImportedModules) {
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unsigned EntitiesCount = C.pImpl->DIImportedEntitys.size();
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auto *M = DIImportedEntity::get(C, Tag, Context, DINodeRef(NS), 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,
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unsigned Line) {
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return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_module,
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Context, NS, Line, StringRef(), AllImportedModules);
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}
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DIImportedEntity *DIBuilder::createImportedModule(DIScope *Context,
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DIImportedEntity *NS,
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unsigned Line) {
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return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_module,
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Context, NS, Line, StringRef(), AllImportedModules);
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}
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DIImportedEntity *DIBuilder::createImportedModule(DIScope *Context, DIModule *M,
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unsigned Line) {
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return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_module,
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Context, M, Line, StringRef(), AllImportedModules);
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}
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DIImportedEntity *DIBuilder::createImportedDeclaration(DIScope *Context,
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DINode *Decl,
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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, Line, Name, 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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assert(!Name.empty() && "Unable to create enumerator without name");
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return DIEnumerator::get(VMContext, Val, 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::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,
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OffsetInBits, Flags, Elements, 0, VTableHolder,
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cast_or_null<MDTuple>(TemplateParams), UniqueIdentifier);
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trackIfUnresolved(R);
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return R;
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}
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DICompositeType *DIBuilder::createStructType(
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DIScope *Context, StringRef Name, DIFile *File, unsigned LineNumber,
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uint64_t SizeInBits, uint32_t AlignInBits, DINode::DIFlags Flags,
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DIType *DerivedFrom, DINodeArray Elements, unsigned RunTimeLang,
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DIType *VTableHolder, StringRef UniqueIdentifier) {
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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, 0,
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Flags, Elements, RunTimeLang, VTableHolder, nullptr, UniqueIdentifier);
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trackIfUnresolved(R);
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return R;
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}
|
|
|
|
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;
|
|
}
|
|
|
|
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) {
|
|
auto *CTy = DICompositeType::get(
|
|
VMContext, dwarf::DW_TAG_enumeration_type, Name, File, LineNumber,
|
|
getNonCompileUnitScope(Scope), UnderlyingType, SizeInBits, AlignInBits, 0,
|
|
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);
|
|
}
|
|
|
|
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);
|
|
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);
|
|
}
|
|
|
|
DIExpression *DIBuilder::createFragmentExpression(unsigned OffsetInBytes,
|
|
unsigned SizeInBytes) {
|
|
uint64_t Addr[] = {dwarf::DW_OP_LLVM_fragment, OffsetInBytes, SizeInBytes};
|
|
return DIExpression::get(VMContext, 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) {
|
|
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());
|
|
|
|
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) {
|
|
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)
|
|
.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) {
|
|
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);
|
|
|
|
if (isDefinition)
|
|
AllSubprograms.push_back(SP);
|
|
trackIfUnresolved(SP);
|
|
return SP;
|
|
}
|
|
|
|
DINamespace *DIBuilder::createNameSpace(DIScope *Scope, StringRef Name,
|
|
DIFile *File, unsigned LineNo,
|
|
bool ExportSymbols) {
|
|
return DINamespace::get(VMContext, getNonCompileUnitScope(Scope), File, Name,
|
|
LineNo, 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);
|
|
}
|
|
|
|
static Value *getDbgIntrinsicValueImpl(LLVMContext &VMContext, Value *V) {
|
|
assert(V && "no value passed to dbg intrinsic");
|
|
return MetadataAsValue::get(VMContext, ValueAsMetadata::get(V));
|
|
}
|
|
|
|
static Instruction *withDebugLoc(Instruction *I, const DILocation *DL) {
|
|
I->setDebugLoc(const_cast<DILocation *>(DL));
|
|
return I;
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDeclare(Value *Storage, DILocalVariable *VarInfo,
|
|
DIExpression *Expr, const DILocation *DL,
|
|
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 = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
|
|
|
|
trackIfUnresolved(VarInfo);
|
|
trackIfUnresolved(Expr);
|
|
Value *Args[] = {getDbgIntrinsicValueImpl(VMContext, Storage),
|
|
MetadataAsValue::get(VMContext, VarInfo),
|
|
MetadataAsValue::get(VMContext, Expr)};
|
|
return withDebugLoc(CallInst::Create(DeclareFn, Args, "", InsertBefore), DL);
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDeclare(Value *Storage, DILocalVariable *VarInfo,
|
|
DIExpression *Expr, const DILocation *DL,
|
|
BasicBlock *InsertAtEnd) {
|
|
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 = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
|
|
|
|
trackIfUnresolved(VarInfo);
|
|
trackIfUnresolved(Expr);
|
|
Value *Args[] = {getDbgIntrinsicValueImpl(VMContext, Storage),
|
|
MetadataAsValue::get(VMContext, VarInfo),
|
|
MetadataAsValue::get(VMContext, Expr)};
|
|
|
|
// If this block already has a terminator then insert this intrinsic
|
|
// before the terminator.
|
|
if (TerminatorInst *T = InsertAtEnd->getTerminator())
|
|
return withDebugLoc(CallInst::Create(DeclareFn, Args, "", T), DL);
|
|
return withDebugLoc(CallInst::Create(DeclareFn, Args, "", InsertAtEnd), DL);
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V, uint64_t Offset,
|
|
DILocalVariable *VarInfo,
|
|
DIExpression *Expr,
|
|
const DILocation *DL,
|
|
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),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), Offset),
|
|
MetadataAsValue::get(VMContext, VarInfo),
|
|
MetadataAsValue::get(VMContext, Expr)};
|
|
return withDebugLoc(CallInst::Create(ValueFn, Args, "", InsertBefore), DL);
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V, uint64_t Offset,
|
|
DILocalVariable *VarInfo,
|
|
DIExpression *Expr,
|
|
const DILocation *DL,
|
|
BasicBlock *InsertAtEnd) {
|
|
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),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), Offset),
|
|
MetadataAsValue::get(VMContext, VarInfo),
|
|
MetadataAsValue::get(VMContext, Expr)};
|
|
|
|
return withDebugLoc(CallInst::Create(ValueFn, Args, "", InsertAtEnd), DL);
|
|
}
|
|
|
|
void DIBuilder::replaceVTableHolder(DICompositeType *&T,
|
|
DICompositeType *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());
|
|
}
|