forked from OSchip/llvm-project
1248 lines
52 KiB
C++
1248 lines
52 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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using namespace llvm;
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using namespace llvm::dwarf;
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namespace {
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class HeaderBuilder {
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/// \brief Whether there are any fields yet.
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///
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/// Note that this is not equivalent to \c Chars.empty(), since \a concat()
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/// may have been called already with an empty string.
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bool IsEmpty;
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SmallVector<char, 256> Chars;
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public:
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HeaderBuilder() : IsEmpty(true) {}
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HeaderBuilder(const HeaderBuilder &X) : IsEmpty(X.IsEmpty), Chars(X.Chars) {}
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HeaderBuilder(HeaderBuilder &&X)
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: IsEmpty(X.IsEmpty), Chars(std::move(X.Chars)) {}
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template <class Twineable> HeaderBuilder &concat(Twineable &&X) {
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if (IsEmpty)
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IsEmpty = false;
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else
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Chars.push_back(0);
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Twine(X).toVector(Chars);
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return *this;
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}
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MDString *get(LLVMContext &Context) const {
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return MDString::get(Context, StringRef(Chars.begin(), Chars.size()));
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}
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static HeaderBuilder get(unsigned Tag) {
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return HeaderBuilder().concat("0x" + Twine::utohexstr(Tag));
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}
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};
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}
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DIBuilder::DIBuilder(Module &m, bool AllowUnresolvedNodes)
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: M(m), VMContext(M.getContext()), TempEnumTypes(nullptr),
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TempRetainTypes(nullptr), TempSubprograms(nullptr), TempGVs(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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DIArray Enums = getOrCreateArray(AllEnumTypes);
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DIType(TempEnumTypes).replaceAllUsesWith(Enums);
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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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DIArray RetainTypes = getOrCreateArray(RetainValues);
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DIType(TempRetainTypes).replaceAllUsesWith(RetainTypes);
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DIArray SPs = getOrCreateArray(AllSubprograms);
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DIType(TempSubprograms).replaceAllUsesWith(SPs);
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for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i) {
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DISubprogram SP(SPs.getElement(i));
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if (MDNode *Temp = SP.getVariablesNodes()) {
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SmallVector<Metadata *, 4> Variables;
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for (Metadata *V : PreservedVariables.lookup(SP))
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Variables.push_back(V);
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DIArray AV = getOrCreateArray(Variables);
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DIType(Temp).replaceAllUsesWith(AV);
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}
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}
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DIArray GVs = getOrCreateArray(AllGVs);
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DIType(TempGVs).replaceAllUsesWith(GVs);
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SmallVector<Metadata *, 16> RetainValuesI;
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for (unsigned I = 0, E = AllImportedModules.size(); I < E; I++)
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RetainValuesI.push_back(AllImportedModules[I]);
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DIArray IMs = getOrCreateArray(RetainValuesI);
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DIType(TempImportedModules).replaceAllUsesWith(IMs);
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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 MDNode *getNonCompileUnitScope(MDNode *N) {
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if (DIDescriptor(N).isCompileUnit())
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return nullptr;
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return N;
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}
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static MDNode *createFilePathPair(LLVMContext &VMContext, StringRef Filename,
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StringRef Directory) {
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assert(!Filename.empty() && "Unable to create file without name");
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Metadata *Pair[] = {MDString::get(VMContext, Filename),
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MDString::get(VMContext, Directory)};
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return MDNode::get(VMContext, Pair);
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}
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DICompileUnit DIBuilder::createCompileUnit(unsigned Lang, StringRef Filename,
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StringRef Directory,
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StringRef Producer, bool isOptimized,
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StringRef Flags, unsigned RunTimeVer,
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StringRef SplitName,
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DebugEmissionKind Kind,
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bool EmitDebugInfo) {
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assert(((Lang <= dwarf::DW_LANG_OCaml && 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(!Filename.empty() &&
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"Unable to create compile unit without filename");
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Metadata *TElts[] = {HeaderBuilder::get(DW_TAG_base_type).get(VMContext)};
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TempEnumTypes = MDNode::getTemporary(VMContext, TElts).release();
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TempRetainTypes = MDNode::getTemporary(VMContext, TElts).release();
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TempSubprograms = MDNode::getTemporary(VMContext, TElts).release();
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TempGVs = MDNode::getTemporary(VMContext, TElts).release();
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TempImportedModules = MDNode::getTemporary(VMContext, TElts).release();
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Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_compile_unit)
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.concat(Lang)
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.concat(Producer)
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.concat(isOptimized)
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.concat(Flags)
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.concat(RunTimeVer)
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.concat(SplitName)
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.concat(Kind)
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.get(VMContext),
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createFilePathPair(VMContext, Filename, Directory),
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TempEnumTypes, TempRetainTypes, TempSubprograms, TempGVs,
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TempImportedModules};
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MDNode *CUNode = MDNode::get(VMContext, Elts);
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// Create a named metadata so that it is easier to find cu in a module.
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// Note that we only generate this when the caller wants to actually
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// emit debug information. When we are only interested in tracking
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// source line locations throughout the backend, we prevent codegen from
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// emitting debug info in the final output by not generating llvm.dbg.cu.
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if (EmitDebugInfo) {
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NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.cu");
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NMD->addOperand(CUNode);
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}
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trackIfUnresolved(CUNode);
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return DICompileUnit(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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const MDNode *R;
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Metadata *Elts[] = {HeaderBuilder::get(Tag).concat(Line).concat(Name).get(C),
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Context, NS};
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R = MDNode::get(C, Elts);
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DIImportedEntity M(R);
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assert(M.Verify() && "Imported module should be valid");
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AllImportedModules.emplace_back(M.get());
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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::createImportedDeclaration(DIScope Context,
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DIDescriptor Decl,
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unsigned Line, 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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Metadata *V =
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Decl.isType() ? static_cast<Metadata *>(DIType(Decl).getRef()) : Decl;
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return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_declaration,
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Context, V, Line, Name,
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AllImportedModules);
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}
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DIImportedEntity DIBuilder::createImportedDeclaration(DIScope Context,
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DIImportedEntity Imp,
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unsigned Line, StringRef Name) {
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return ::createImportedModule(VMContext, dwarf::DW_TAG_imported_declaration,
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Context, Imp, Line, Name, AllImportedModules);
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}
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DIFile DIBuilder::createFile(StringRef Filename, StringRef Directory) {
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Metadata *Elts[] = {
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HeaderBuilder::get(dwarf::DW_TAG_file_type).get(VMContext),
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createFilePathPair(VMContext, Filename, Directory)};
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return DIFile(MDNode::get(VMContext, Elts));
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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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Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_enumerator)
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.concat(Name)
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.concat(Val)
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.get(VMContext)};
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return DIEnumerator(MDNode::get(VMContext, Elts));
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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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// Unspecified types are encoded in DIBasicType format. Line number, filename,
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// size, alignment, offset and flags are always empty here.
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Metadata *Elts[] = {
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HeaderBuilder::get(dwarf::DW_TAG_unspecified_type)
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.concat(Name)
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.concat(0)
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.concat(0)
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.concat(0)
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.concat(0)
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.concat(0)
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.concat(0)
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.get(VMContext),
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nullptr, // Filename
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nullptr // Unused
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};
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return DIBasicType(MDNode::get(VMContext, Elts));
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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
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DIBuilder::createBasicType(StringRef Name, uint64_t SizeInBits,
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uint64_t AlignInBits, unsigned Encoding) {
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assert(!Name.empty() && "Unable to create type without name");
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// Basic types are encoded in DIBasicType format. Line number, filename,
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// offset and flags are always empty here.
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Metadata *Elts[] = {
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HeaderBuilder::get(dwarf::DW_TAG_base_type)
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.concat(Name)
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.concat(0) // Line
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.concat(SizeInBits)
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.concat(AlignInBits)
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.concat(0) // Offset
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.concat(0) // Flags
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.concat(Encoding)
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.get(VMContext),
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nullptr, // Filename
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nullptr // Unused
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};
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return DIBasicType(MDNode::get(VMContext, Elts));
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}
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DIDerivedType DIBuilder::createQualifiedType(unsigned Tag, DIType FromTy) {
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// Qualified types are encoded in DIDerivedType format.
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Metadata *Elts[] = {HeaderBuilder::get(Tag)
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.concat(StringRef()) // Name
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.concat(0) // Line
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.concat(0) // Size
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.concat(0) // Align
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.concat(0) // Offset
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.concat(0) // Flags
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.get(VMContext),
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nullptr, // Filename
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nullptr, // Unused
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FromTy.getRef()};
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return DIDerivedType(MDNode::get(VMContext, Elts));
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}
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DIDerivedType
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DIBuilder::createPointerType(DIType PointeeTy, uint64_t SizeInBits,
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uint64_t AlignInBits, StringRef Name) {
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// Pointer types are encoded in DIDerivedType format.
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Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_pointer_type)
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.concat(Name)
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.concat(0) // Line
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.concat(SizeInBits)
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.concat(AlignInBits)
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.concat(0) // Offset
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.concat(0) // Flags
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.get(VMContext),
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nullptr, // Filename
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nullptr, // Unused
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PointeeTy.getRef()};
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return DIDerivedType(MDNode::get(VMContext, Elts));
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}
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DIDerivedType
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DIBuilder::createMemberPointerType(DIType PointeeTy, DIType Base,
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uint64_t SizeInBits, uint64_t AlignInBits) {
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// Pointer types are encoded in DIDerivedType format.
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Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_ptr_to_member_type)
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.concat(StringRef())
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.concat(0) // Line
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.concat(SizeInBits) // Size
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.concat(AlignInBits) // Align
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.concat(0) // Offset
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.concat(0) // Flags
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.get(VMContext),
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nullptr, // Filename
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nullptr, // Unused
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PointeeTy.getRef(), Base.getRef()};
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return DIDerivedType(MDNode::get(VMContext, Elts));
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}
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DIDerivedType DIBuilder::createReferenceType(unsigned Tag, DIType RTy) {
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assert(RTy.isType() && "Unable to create reference type");
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// References are encoded in DIDerivedType format.
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Metadata *Elts[] = {HeaderBuilder::get(Tag)
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.concat(StringRef()) // Name
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.concat(0) // Line
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.concat(0) // Size
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.concat(0) // Align
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.concat(0) // Offset
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.concat(0) // Flags
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.get(VMContext),
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nullptr, // Filename
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nullptr, // TheCU,
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RTy.getRef()};
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return DIDerivedType(MDNode::get(VMContext, Elts));
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}
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DIDerivedType DIBuilder::createTypedef(DIType Ty, StringRef Name, DIFile File,
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unsigned LineNo, DIDescriptor Context) {
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// typedefs are encoded in DIDerivedType format.
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Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_typedef)
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.concat(Name)
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.concat(LineNo)
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.concat(0) // Size
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.concat(0) // Align
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.concat(0) // Offset
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.concat(0) // Flags
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.get(VMContext),
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File.getFileNode(),
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DIScope(getNonCompileUnitScope(Context)).getRef(),
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Ty.getRef()};
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return DIDerivedType(MDNode::get(VMContext, Elts));
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}
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DIDerivedType DIBuilder::createFriend(DIType Ty, DIType FriendTy) {
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// typedefs are encoded in DIDerivedType format.
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assert(Ty.isType() && "Invalid type!");
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assert(FriendTy.isType() && "Invalid friend type!");
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Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_friend)
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.concat(StringRef()) // Name
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.concat(0) // Line
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.concat(0) // Size
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.concat(0) // Align
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.concat(0) // Offset
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.concat(0) // Flags
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.get(VMContext),
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nullptr, Ty.getRef(), FriendTy.getRef()};
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return DIDerivedType(MDNode::get(VMContext, Elts));
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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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unsigned Flags) {
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assert(Ty.isType() && "Unable to create inheritance");
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// TAG_inheritance is encoded in DIDerivedType format.
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Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_inheritance)
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.concat(StringRef()) // Name
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.concat(0) // Line
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.concat(0) // Size
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.concat(0) // Align
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.concat(BaseOffset)
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.concat(Flags)
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.get(VMContext),
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nullptr, Ty.getRef(), BaseTy.getRef()};
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return DIDerivedType(MDNode::get(VMContext, Elts));
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}
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DIDerivedType DIBuilder::createMemberType(DIDescriptor Scope, StringRef Name,
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DIFile File, unsigned LineNumber,
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uint64_t SizeInBits,
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uint64_t AlignInBits,
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uint64_t OffsetInBits, unsigned Flags,
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DIType Ty) {
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// TAG_member is encoded in DIDerivedType format.
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Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_member)
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.concat(Name)
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.concat(LineNumber)
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.concat(SizeInBits)
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.concat(AlignInBits)
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.concat(OffsetInBits)
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.concat(Flags)
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.get(VMContext),
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File.getFileNode(),
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DIScope(getNonCompileUnitScope(Scope)).getRef(),
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Ty.getRef()};
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return DIDerivedType(MDNode::get(VMContext, Elts));
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}
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static Metadata *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::createStaticMemberType(DIDescriptor Scope,
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StringRef Name, DIFile File,
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unsigned LineNumber, DIType Ty,
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unsigned Flags,
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llvm::Constant *Val) {
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// TAG_member is encoded in DIDerivedType format.
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Flags |= DIDescriptor::FlagStaticMember;
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Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_member)
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.concat(Name)
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.concat(LineNumber)
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.concat(0) // Size
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.concat(0) // Align
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.concat(0) // Offset
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.concat(Flags)
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.get(VMContext),
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File.getFileNode(),
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DIScope(getNonCompileUnitScope(Scope)).getRef(),
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Ty.getRef(), getConstantOrNull(Val)};
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return DIDerivedType(MDNode::get(VMContext, Elts));
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}
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DIDerivedType DIBuilder::createObjCIVar(StringRef Name, DIFile File,
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unsigned LineNumber,
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uint64_t SizeInBits,
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uint64_t AlignInBits,
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uint64_t OffsetInBits, unsigned Flags,
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DIType Ty, MDNode *PropertyNode) {
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// TAG_member is encoded in DIDerivedType format.
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Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_member)
|
|
.concat(Name)
|
|
.concat(LineNumber)
|
|
.concat(SizeInBits)
|
|
.concat(AlignInBits)
|
|
.concat(OffsetInBits)
|
|
.concat(Flags)
|
|
.get(VMContext),
|
|
File.getFileNode(), getNonCompileUnitScope(File), Ty,
|
|
PropertyNode};
|
|
return DIDerivedType(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
DIObjCProperty
|
|
DIBuilder::createObjCProperty(StringRef Name, DIFile File, unsigned LineNumber,
|
|
StringRef GetterName, StringRef SetterName,
|
|
unsigned PropertyAttributes, DIType Ty) {
|
|
Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_APPLE_property)
|
|
.concat(Name)
|
|
.concat(LineNumber)
|
|
.concat(GetterName)
|
|
.concat(SetterName)
|
|
.concat(PropertyAttributes)
|
|
.get(VMContext),
|
|
File, Ty};
|
|
return DIObjCProperty(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
DITemplateTypeParameter
|
|
DIBuilder::createTemplateTypeParameter(DIDescriptor Context, StringRef Name,
|
|
DIType Ty, MDNode *File, unsigned LineNo,
|
|
unsigned ColumnNo) {
|
|
Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_template_type_parameter)
|
|
.concat(Name)
|
|
.concat(LineNo)
|
|
.concat(ColumnNo)
|
|
.get(VMContext),
|
|
DIScope(getNonCompileUnitScope(Context)).getRef(),
|
|
Ty.getRef(), File};
|
|
return DITemplateTypeParameter(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
static DITemplateValueParameter createTemplateValueParameterHelper(
|
|
LLVMContext &VMContext, unsigned Tag, DIDescriptor Context, StringRef Name,
|
|
DIType Ty, Metadata *MD, MDNode *File, unsigned LineNo, unsigned ColumnNo) {
|
|
Metadata *Elts[] = {
|
|
HeaderBuilder::get(Tag).concat(Name).concat(LineNo).concat(ColumnNo).get(
|
|
VMContext),
|
|
DIScope(getNonCompileUnitScope(Context)).getRef(), Ty.getRef(), MD, File};
|
|
return DITemplateValueParameter(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
DITemplateValueParameter
|
|
DIBuilder::createTemplateValueParameter(DIDescriptor Context, StringRef Name,
|
|
DIType Ty, Constant *Val, MDNode *File,
|
|
unsigned LineNo, unsigned ColumnNo) {
|
|
return createTemplateValueParameterHelper(
|
|
VMContext, dwarf::DW_TAG_template_value_parameter, Context, Name, Ty,
|
|
getConstantOrNull(Val), File, LineNo, ColumnNo);
|
|
}
|
|
|
|
DITemplateValueParameter
|
|
DIBuilder::createTemplateTemplateParameter(DIDescriptor Context, StringRef Name,
|
|
DIType Ty, StringRef Val,
|
|
MDNode *File, unsigned LineNo,
|
|
unsigned ColumnNo) {
|
|
return createTemplateValueParameterHelper(
|
|
VMContext, dwarf::DW_TAG_GNU_template_template_param, Context, Name, Ty,
|
|
MDString::get(VMContext, Val), File, LineNo, ColumnNo);
|
|
}
|
|
|
|
DITemplateValueParameter
|
|
DIBuilder::createTemplateParameterPack(DIDescriptor Context, StringRef Name,
|
|
DIType Ty, DIArray Val,
|
|
MDNode *File, unsigned LineNo,
|
|
unsigned ColumnNo) {
|
|
return createTemplateValueParameterHelper(
|
|
VMContext, dwarf::DW_TAG_GNU_template_parameter_pack, Context, Name, Ty,
|
|
Val, File, LineNo, ColumnNo);
|
|
}
|
|
|
|
DICompositeType DIBuilder::createClassType(DIDescriptor Context, StringRef Name,
|
|
DIFile File, unsigned LineNumber,
|
|
uint64_t SizeInBits,
|
|
uint64_t AlignInBits,
|
|
uint64_t OffsetInBits,
|
|
unsigned Flags, DIType DerivedFrom,
|
|
DIArray Elements,
|
|
DIType VTableHolder,
|
|
MDNode *TemplateParams,
|
|
StringRef UniqueIdentifier) {
|
|
assert((!Context || Context.isScope() || Context.isType()) &&
|
|
"createClassType should be called with a valid Context");
|
|
// TAG_class_type is encoded in DICompositeType format.
|
|
Metadata *Elts[] = {
|
|
HeaderBuilder::get(dwarf::DW_TAG_class_type)
|
|
.concat(Name)
|
|
.concat(LineNumber)
|
|
.concat(SizeInBits)
|
|
.concat(AlignInBits)
|
|
.concat(OffsetInBits)
|
|
.concat(Flags)
|
|
.concat(0)
|
|
.get(VMContext),
|
|
File.getFileNode(), DIScope(getNonCompileUnitScope(Context)).getRef(),
|
|
DerivedFrom.getRef(), Elements, VTableHolder.getRef(), TemplateParams,
|
|
UniqueIdentifier.empty() ? nullptr
|
|
: MDString::get(VMContext, UniqueIdentifier)};
|
|
DICompositeType R(MDNode::get(VMContext, Elts));
|
|
assert(R.isCompositeType() &&
|
|
"createClassType should return a DICompositeType");
|
|
if (!UniqueIdentifier.empty())
|
|
retainType(R);
|
|
return R;
|
|
}
|
|
|
|
DICompositeType DIBuilder::createStructType(DIDescriptor Context,
|
|
StringRef Name, DIFile File,
|
|
unsigned LineNumber,
|
|
uint64_t SizeInBits,
|
|
uint64_t AlignInBits,
|
|
unsigned Flags, DIType DerivedFrom,
|
|
DIArray Elements,
|
|
unsigned RunTimeLang,
|
|
DIType VTableHolder,
|
|
StringRef UniqueIdentifier) {
|
|
// TAG_structure_type is encoded in DICompositeType format.
|
|
Metadata *Elts[] = {
|
|
HeaderBuilder::get(dwarf::DW_TAG_structure_type)
|
|
.concat(Name)
|
|
.concat(LineNumber)
|
|
.concat(SizeInBits)
|
|
.concat(AlignInBits)
|
|
.concat(0)
|
|
.concat(Flags)
|
|
.concat(RunTimeLang)
|
|
.get(VMContext),
|
|
File.getFileNode(), DIScope(getNonCompileUnitScope(Context)).getRef(),
|
|
DerivedFrom.getRef(), Elements, VTableHolder.getRef(), nullptr,
|
|
UniqueIdentifier.empty() ? nullptr
|
|
: MDString::get(VMContext, UniqueIdentifier)};
|
|
DICompositeType R(MDNode::get(VMContext, Elts));
|
|
assert(R.isCompositeType() &&
|
|
"createStructType should return a DICompositeType");
|
|
if (!UniqueIdentifier.empty())
|
|
retainType(R);
|
|
return R;
|
|
}
|
|
|
|
DICompositeType DIBuilder::createUnionType(DIDescriptor Scope, StringRef Name,
|
|
DIFile File, unsigned LineNumber,
|
|
uint64_t SizeInBits,
|
|
uint64_t AlignInBits, unsigned Flags,
|
|
DIArray Elements,
|
|
unsigned RunTimeLang,
|
|
StringRef UniqueIdentifier) {
|
|
// TAG_union_type is encoded in DICompositeType format.
|
|
Metadata *Elts[] = {
|
|
HeaderBuilder::get(dwarf::DW_TAG_union_type)
|
|
.concat(Name)
|
|
.concat(LineNumber)
|
|
.concat(SizeInBits)
|
|
.concat(AlignInBits)
|
|
.concat(0) // Offset
|
|
.concat(Flags)
|
|
.concat(RunTimeLang)
|
|
.get(VMContext),
|
|
File.getFileNode(), DIScope(getNonCompileUnitScope(Scope)).getRef(),
|
|
nullptr, Elements, nullptr, nullptr,
|
|
UniqueIdentifier.empty() ? nullptr
|
|
: MDString::get(VMContext, UniqueIdentifier)};
|
|
DICompositeType R(MDNode::get(VMContext, Elts));
|
|
if (!UniqueIdentifier.empty())
|
|
retainType(R);
|
|
return R;
|
|
}
|
|
|
|
DISubroutineType DIBuilder::createSubroutineType(DIFile File,
|
|
DITypeArray ParameterTypes,
|
|
unsigned Flags) {
|
|
// TAG_subroutine_type is encoded in DICompositeType format.
|
|
Metadata *Elts[] = {
|
|
HeaderBuilder::get(dwarf::DW_TAG_subroutine_type)
|
|
.concat(StringRef())
|
|
.concat(0) // Line
|
|
.concat(0) // Size
|
|
.concat(0) // Align
|
|
.concat(0) // Offset
|
|
.concat(Flags) // Flags
|
|
.concat(0)
|
|
.get(VMContext),
|
|
nullptr, nullptr, nullptr, ParameterTypes, nullptr, nullptr,
|
|
nullptr // Type Identifer
|
|
};
|
|
return DISubroutineType(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
DICompositeType DIBuilder::createEnumerationType(
|
|
DIDescriptor Scope, StringRef Name, DIFile File, unsigned LineNumber,
|
|
uint64_t SizeInBits, uint64_t AlignInBits, DIArray Elements,
|
|
DIType UnderlyingType, StringRef UniqueIdentifier) {
|
|
// TAG_enumeration_type is encoded in DICompositeType format.
|
|
Metadata *Elts[] = {
|
|
HeaderBuilder::get(dwarf::DW_TAG_enumeration_type)
|
|
.concat(Name)
|
|
.concat(LineNumber)
|
|
.concat(SizeInBits)
|
|
.concat(AlignInBits)
|
|
.concat(0) // Offset
|
|
.concat(0) // Flags
|
|
.concat(0)
|
|
.get(VMContext),
|
|
File.getFileNode(), DIScope(getNonCompileUnitScope(Scope)).getRef(),
|
|
UnderlyingType.getRef(), Elements, nullptr, nullptr,
|
|
UniqueIdentifier.empty() ? nullptr
|
|
: MDString::get(VMContext, UniqueIdentifier)};
|
|
DICompositeType CTy(MDNode::get(VMContext, Elts));
|
|
AllEnumTypes.push_back(CTy);
|
|
if (!UniqueIdentifier.empty())
|
|
retainType(CTy);
|
|
return CTy;
|
|
}
|
|
|
|
DICompositeType DIBuilder::createArrayType(uint64_t Size, uint64_t AlignInBits,
|
|
DIType Ty, DIArray Subscripts) {
|
|
// TAG_array_type is encoded in DICompositeType format.
|
|
Metadata *Elts[] = {
|
|
HeaderBuilder::get(dwarf::DW_TAG_array_type)
|
|
.concat(StringRef())
|
|
.concat(0) // Line
|
|
.concat(Size)
|
|
.concat(AlignInBits)
|
|
.concat(0) // Offset
|
|
.concat(0) // Flags
|
|
.concat(0)
|
|
.get(VMContext),
|
|
nullptr, // Filename/Directory,
|
|
nullptr, // Unused
|
|
Ty.getRef(), Subscripts, nullptr, nullptr,
|
|
nullptr // Type Identifer
|
|
};
|
|
return DICompositeType(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
DICompositeType DIBuilder::createVectorType(uint64_t Size, uint64_t AlignInBits,
|
|
DIType Ty, DIArray Subscripts) {
|
|
// A vector is an array type with the FlagVector flag applied.
|
|
Metadata *Elts[] = {
|
|
HeaderBuilder::get(dwarf::DW_TAG_array_type)
|
|
.concat("")
|
|
.concat(0) // Line
|
|
.concat(Size)
|
|
.concat(AlignInBits)
|
|
.concat(0) // Offset
|
|
.concat(DIType::FlagVector)
|
|
.concat(0)
|
|
.get(VMContext),
|
|
nullptr, // Filename/Directory,
|
|
nullptr, // Unused
|
|
Ty.getRef(), Subscripts, nullptr, nullptr,
|
|
nullptr // Type Identifer
|
|
};
|
|
return DICompositeType(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
static HeaderBuilder setTypeFlagsInHeader(StringRef Header,
|
|
unsigned FlagsToSet) {
|
|
DIHeaderFieldIterator I(Header);
|
|
std::advance(I, 6);
|
|
|
|
unsigned Flags;
|
|
if (I->getAsInteger(0, Flags))
|
|
Flags = 0;
|
|
Flags |= FlagsToSet;
|
|
|
|
return HeaderBuilder()
|
|
.concat(I.getPrefix())
|
|
.concat(Flags)
|
|
.concat(I.getSuffix());
|
|
}
|
|
|
|
static DIType createTypeWithFlags(LLVMContext &Context, DIType Ty,
|
|
unsigned FlagsToSet) {
|
|
SmallVector<Metadata *, 9> Elts;
|
|
MDNode *N = Ty;
|
|
assert(N && "Unexpected input DIType!");
|
|
// Update header field.
|
|
Elts.push_back(setTypeFlagsInHeader(Ty.getHeader(), FlagsToSet).get(Context));
|
|
for (unsigned I = 1, E = N->getNumOperands(); I != E; ++I)
|
|
Elts.push_back(N->getOperand(I));
|
|
|
|
return DIType(MDNode::get(Context, Elts));
|
|
}
|
|
|
|
DIType DIBuilder::createArtificialType(DIType Ty) {
|
|
if (Ty.isArtificial())
|
|
return Ty;
|
|
return createTypeWithFlags(VMContext, Ty, DIType::FlagArtificial);
|
|
}
|
|
|
|
DIType DIBuilder::createObjectPointerType(DIType Ty) {
|
|
if (Ty.isObjectPointer())
|
|
return Ty;
|
|
unsigned Flags = DIType::FlagObjectPointer | DIType::FlagArtificial;
|
|
return createTypeWithFlags(VMContext, Ty, Flags);
|
|
}
|
|
|
|
void DIBuilder::retainType(DIType T) { AllRetainTypes.emplace_back(T); }
|
|
|
|
DIBasicType DIBuilder::createUnspecifiedParameter() {
|
|
return DIBasicType();
|
|
}
|
|
|
|
DICompositeType
|
|
DIBuilder::createForwardDecl(unsigned Tag, StringRef Name, DIDescriptor Scope,
|
|
DIFile F, unsigned Line, unsigned RuntimeLang,
|
|
uint64_t SizeInBits, uint64_t AlignInBits,
|
|
StringRef UniqueIdentifier) {
|
|
// Create a temporary MDNode.
|
|
Metadata *Elts[] = {
|
|
HeaderBuilder::get(Tag)
|
|
.concat(Name)
|
|
.concat(Line)
|
|
.concat(SizeInBits)
|
|
.concat(AlignInBits)
|
|
.concat(0) // Offset
|
|
.concat(DIDescriptor::FlagFwdDecl)
|
|
.concat(RuntimeLang)
|
|
.get(VMContext),
|
|
F.getFileNode(), DIScope(getNonCompileUnitScope(Scope)).getRef(), nullptr,
|
|
DIArray(), nullptr,
|
|
nullptr, // TemplateParams
|
|
UniqueIdentifier.empty() ? nullptr
|
|
: MDString::get(VMContext, UniqueIdentifier)};
|
|
MDNode *Node = MDNode::get(VMContext, Elts);
|
|
DICompositeType RetTy(Node);
|
|
assert(RetTy.isCompositeType() &&
|
|
"createForwardDecl result should be a DIType");
|
|
if (!UniqueIdentifier.empty())
|
|
retainType(RetTy);
|
|
return RetTy;
|
|
}
|
|
|
|
DICompositeType DIBuilder::createReplaceableForwardDecl(
|
|
unsigned Tag, StringRef Name, DIDescriptor Scope, DIFile F, unsigned Line,
|
|
unsigned RuntimeLang, uint64_t SizeInBits, uint64_t AlignInBits,
|
|
StringRef UniqueIdentifier) {
|
|
// Create a temporary MDNode.
|
|
Metadata *Elts[] = {
|
|
HeaderBuilder::get(Tag)
|
|
.concat(Name)
|
|
.concat(Line)
|
|
.concat(SizeInBits)
|
|
.concat(AlignInBits)
|
|
.concat(0) // Offset
|
|
.concat(DIDescriptor::FlagFwdDecl)
|
|
.concat(RuntimeLang)
|
|
.get(VMContext),
|
|
F.getFileNode(), DIScope(getNonCompileUnitScope(Scope)).getRef(), nullptr,
|
|
DIArray(), nullptr,
|
|
nullptr, // TemplateParams
|
|
UniqueIdentifier.empty() ? nullptr
|
|
: MDString::get(VMContext, UniqueIdentifier)};
|
|
DICompositeType RetTy(MDNode::getTemporary(VMContext, Elts).release());
|
|
assert(RetTy.isCompositeType() &&
|
|
"createReplaceableForwardDecl result should be a DIType");
|
|
if (!UniqueIdentifier.empty())
|
|
retainType(RetTy);
|
|
return RetTy;
|
|
}
|
|
|
|
DIArray DIBuilder::getOrCreateArray(ArrayRef<Metadata *> Elements) {
|
|
return DIArray(MDNode::get(VMContext, Elements));
|
|
}
|
|
|
|
DITypeArray 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(DIType(cast<MDNode>(Elements[i])).getRef());
|
|
else
|
|
Elts.push_back(Elements[i]);
|
|
}
|
|
return DITypeArray(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
DISubrange DIBuilder::getOrCreateSubrange(int64_t Lo, int64_t Count) {
|
|
Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_subrange_type)
|
|
.concat(Lo)
|
|
.concat(Count)
|
|
.get(VMContext)};
|
|
|
|
return DISubrange(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
static DIGlobalVariable createGlobalVariableHelper(
|
|
LLVMContext &VMContext, DIDescriptor Context, StringRef Name,
|
|
StringRef LinkageName, DIFile F, unsigned LineNumber, DITypeRef Ty,
|
|
bool isLocalToUnit, Constant *Val, MDNode *Decl, bool isDefinition,
|
|
std::function<MDNode *(ArrayRef<Metadata *>)> CreateFunc) {
|
|
|
|
MDNode *TheCtx = getNonCompileUnitScope(Context);
|
|
if (DIScope(TheCtx).isCompositeType()) {
|
|
assert(!DICompositeType(TheCtx).getIdentifier() &&
|
|
"Context of a global variable should not be a type with identifier");
|
|
}
|
|
|
|
Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_variable)
|
|
.concat(Name)
|
|
.concat(Name)
|
|
.concat(LinkageName)
|
|
.concat(LineNumber)
|
|
.concat(isLocalToUnit)
|
|
.concat(isDefinition)
|
|
.get(VMContext),
|
|
TheCtx, F, Ty, getConstantOrNull(Val),
|
|
DIDescriptor(Decl)};
|
|
|
|
return DIGlobalVariable(CreateFunc(Elts));
|
|
}
|
|
|
|
DIGlobalVariable DIBuilder::createGlobalVariable(
|
|
DIDescriptor Context, StringRef Name, StringRef LinkageName, DIFile F,
|
|
unsigned LineNumber, DITypeRef Ty, bool isLocalToUnit, Constant *Val,
|
|
MDNode *Decl) {
|
|
return createGlobalVariableHelper(
|
|
VMContext, Context, Name, LinkageName, F, LineNumber, Ty, isLocalToUnit,
|
|
Val, Decl, true, [&](ArrayRef<Metadata *> Elts) -> MDNode *{
|
|
MDNode *Node = MDNode::get(VMContext, Elts);
|
|
AllGVs.push_back(Node);
|
|
return Node;
|
|
});
|
|
}
|
|
|
|
DIGlobalVariable DIBuilder::createTempGlobalVariableFwdDecl(
|
|
DIDescriptor Context, StringRef Name, StringRef LinkageName, DIFile F,
|
|
unsigned LineNumber, DITypeRef Ty, bool isLocalToUnit, Constant *Val,
|
|
MDNode *Decl) {
|
|
return createGlobalVariableHelper(VMContext, Context, Name, LinkageName, F,
|
|
LineNumber, Ty, isLocalToUnit, Val, Decl,
|
|
false, [&](ArrayRef<Metadata *> Elts) {
|
|
return MDNode::getTemporary(VMContext, Elts).release();
|
|
});
|
|
}
|
|
|
|
DIVariable DIBuilder::createLocalVariable(unsigned Tag, DIDescriptor Scope,
|
|
StringRef Name, DIFile File,
|
|
unsigned LineNo, DITypeRef Ty,
|
|
bool AlwaysPreserve, unsigned Flags,
|
|
unsigned ArgNo) {
|
|
DIDescriptor Context(getNonCompileUnitScope(Scope));
|
|
assert((!Context || Context.isScope()) &&
|
|
"createLocalVariable should be called with a valid Context");
|
|
Metadata *Elts[] = {HeaderBuilder::get(Tag)
|
|
.concat(Name)
|
|
.concat(LineNo | (ArgNo << 24))
|
|
.concat(Flags)
|
|
.get(VMContext),
|
|
getNonCompileUnitScope(Scope), File, Ty};
|
|
MDNode *Node = MDNode::get(VMContext, Elts);
|
|
if (AlwaysPreserve) {
|
|
// The optimizer may remove local variable. 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);
|
|
}
|
|
DIVariable RetVar(Node);
|
|
assert(RetVar.isVariable() &&
|
|
"createLocalVariable should return a valid DIVariable");
|
|
return RetVar;
|
|
}
|
|
|
|
DIExpression DIBuilder::createExpression(ArrayRef<int64_t> Addr) {
|
|
auto Header = HeaderBuilder::get(DW_TAG_expression);
|
|
for (int64_t I : Addr)
|
|
Header.concat(I);
|
|
Metadata *Elts[] = {Header.get(VMContext)};
|
|
return DIExpression(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
DIExpression DIBuilder::createPieceExpression(unsigned OffsetInBytes,
|
|
unsigned SizeInBytes) {
|
|
int64_t Addr[] = {dwarf::DW_OP_piece, OffsetInBytes, SizeInBytes};
|
|
return createExpression(Addr);
|
|
}
|
|
|
|
DISubprogram DIBuilder::createFunction(DIScopeRef Context, StringRef Name,
|
|
StringRef LinkageName, DIFile File,
|
|
unsigned LineNo, DICompositeType Ty,
|
|
bool isLocalToUnit, bool isDefinition,
|
|
unsigned ScopeLine, unsigned Flags,
|
|
bool isOptimized, Function *Fn,
|
|
MDNode *TParams, MDNode *Decl) {
|
|
// dragonegg does not generate identifier for types, so using an empty map
|
|
// to resolve the context should be fine.
|
|
DITypeIdentifierMap EmptyMap;
|
|
return createFunction(Context.resolve(EmptyMap), Name, LinkageName, File,
|
|
LineNo, Ty, isLocalToUnit, isDefinition, ScopeLine,
|
|
Flags, isOptimized, Fn, TParams, Decl);
|
|
}
|
|
|
|
static DISubprogram createFunctionHelper(
|
|
LLVMContext &VMContext, DIDescriptor Context, StringRef Name,
|
|
StringRef LinkageName, DIFile File, unsigned LineNo, DICompositeType Ty,
|
|
bool isLocalToUnit, bool isDefinition, unsigned ScopeLine, unsigned Flags,
|
|
bool isOptimized, Function *Fn, MDNode *TParams, MDNode *Decl, MDNode *Vars,
|
|
std::function<MDNode *(ArrayRef<Metadata *>)> CreateFunc) {
|
|
assert(Ty.getTag() == dwarf::DW_TAG_subroutine_type &&
|
|
"function types should be subroutines");
|
|
Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_subprogram)
|
|
.concat(Name)
|
|
.concat(Name)
|
|
.concat(LinkageName)
|
|
.concat(LineNo)
|
|
.concat(isLocalToUnit)
|
|
.concat(isDefinition)
|
|
.concat(0)
|
|
.concat(0)
|
|
.concat(Flags)
|
|
.concat(isOptimized)
|
|
.concat(ScopeLine)
|
|
.get(VMContext),
|
|
File.getFileNode(),
|
|
DIScope(getNonCompileUnitScope(Context)).getRef(), Ty,
|
|
nullptr, getConstantOrNull(Fn), TParams, Decl, Vars};
|
|
|
|
DISubprogram S(CreateFunc(Elts));
|
|
assert(S.isSubprogram() &&
|
|
"createFunction should return a valid DISubprogram");
|
|
return S;
|
|
}
|
|
|
|
|
|
DISubprogram DIBuilder::createFunction(DIDescriptor Context, StringRef Name,
|
|
StringRef LinkageName, DIFile File,
|
|
unsigned LineNo, DICompositeType Ty,
|
|
bool isLocalToUnit, bool isDefinition,
|
|
unsigned ScopeLine, unsigned Flags,
|
|
bool isOptimized, Function *Fn,
|
|
MDNode *TParams, MDNode *Decl) {
|
|
return createFunctionHelper(VMContext, Context, Name, LinkageName, File,
|
|
LineNo, Ty, isLocalToUnit, isDefinition,
|
|
ScopeLine, Flags, isOptimized, Fn, TParams, Decl,
|
|
MDNode::getTemporary(VMContext, None).release(),
|
|
[&](ArrayRef<Metadata *> Elts) -> MDNode *{
|
|
MDNode *Node = MDNode::get(VMContext, Elts);
|
|
// Create a named metadata so that we
|
|
// do not lose this mdnode.
|
|
if (isDefinition)
|
|
AllSubprograms.push_back(Node);
|
|
return Node;
|
|
});
|
|
}
|
|
|
|
DISubprogram
|
|
DIBuilder::createTempFunctionFwdDecl(DIDescriptor Context, StringRef Name,
|
|
StringRef LinkageName, DIFile File,
|
|
unsigned LineNo, DICompositeType Ty,
|
|
bool isLocalToUnit, bool isDefinition,
|
|
unsigned ScopeLine, unsigned Flags,
|
|
bool isOptimized, Function *Fn,
|
|
MDNode *TParams, MDNode *Decl) {
|
|
return createFunctionHelper(VMContext, Context, Name, LinkageName, File,
|
|
LineNo, Ty, isLocalToUnit, isDefinition,
|
|
ScopeLine, Flags, isOptimized, Fn, TParams, Decl,
|
|
nullptr, [&](ArrayRef<Metadata *> Elts) {
|
|
return MDNode::getTemporary(VMContext, Elts).release();
|
|
});
|
|
}
|
|
|
|
DISubprogram DIBuilder::createMethod(DIDescriptor Context, StringRef Name,
|
|
StringRef LinkageName, DIFile F,
|
|
unsigned LineNo, DICompositeType Ty,
|
|
bool isLocalToUnit, bool isDefinition,
|
|
unsigned VK, unsigned VIndex,
|
|
DIType VTableHolder, unsigned Flags,
|
|
bool isOptimized, Function *Fn,
|
|
MDNode *TParam) {
|
|
assert(Ty.getTag() == dwarf::DW_TAG_subroutine_type &&
|
|
"function types should be subroutines");
|
|
assert(getNonCompileUnitScope(Context) &&
|
|
"Methods should have both a Context and a context that isn't "
|
|
"the compile unit.");
|
|
Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_subprogram)
|
|
.concat(Name)
|
|
.concat(Name)
|
|
.concat(LinkageName)
|
|
.concat(LineNo)
|
|
.concat(isLocalToUnit)
|
|
.concat(isDefinition)
|
|
.concat(VK)
|
|
.concat(VIndex)
|
|
.concat(Flags)
|
|
.concat(isOptimized)
|
|
.concat(LineNo)
|
|
// FIXME: Do we want to use different scope/lines?
|
|
.get(VMContext),
|
|
F.getFileNode(), DIScope(Context).getRef(), Ty,
|
|
VTableHolder.getRef(), getConstantOrNull(Fn), TParam,
|
|
nullptr, nullptr};
|
|
MDNode *Node = MDNode::get(VMContext, Elts);
|
|
if (isDefinition)
|
|
AllSubprograms.push_back(Node);
|
|
DISubprogram S(Node);
|
|
assert(S.isSubprogram() && "createMethod should return a valid DISubprogram");
|
|
return S;
|
|
}
|
|
|
|
DINameSpace DIBuilder::createNameSpace(DIDescriptor Scope, StringRef Name,
|
|
DIFile File, unsigned LineNo) {
|
|
Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_namespace)
|
|
.concat(Name)
|
|
.concat(LineNo)
|
|
.get(VMContext),
|
|
File.getFileNode(), getNonCompileUnitScope(Scope)};
|
|
DINameSpace R(MDNode::get(VMContext, Elts));
|
|
assert(R.Verify() &&
|
|
"createNameSpace should return a verifiable DINameSpace");
|
|
return R;
|
|
}
|
|
|
|
DILexicalBlockFile DIBuilder::createLexicalBlockFile(DIDescriptor Scope,
|
|
DIFile File,
|
|
unsigned Discriminator) {
|
|
Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_lexical_block)
|
|
.concat(Discriminator)
|
|
.get(VMContext),
|
|
File.getFileNode(), Scope};
|
|
DILexicalBlockFile R(MDNode::get(VMContext, Elts));
|
|
assert(
|
|
R.Verify() &&
|
|
"createLexicalBlockFile should return a verifiable DILexicalBlockFile");
|
|
return R;
|
|
}
|
|
|
|
DILexicalBlock DIBuilder::createLexicalBlock(DIDescriptor Scope, DIFile File,
|
|
unsigned Line, unsigned Col) {
|
|
// FIXME: This isn't thread safe nor the right way to defeat MDNode uniquing.
|
|
// I believe the right way is to have a self-referential element in the node.
|
|
// Also: why do we bother with line/column - they're not used and the
|
|
// documentation (SourceLevelDebugging.rst) claims the line/col are necessary
|
|
// for uniquing, yet then we have this other solution (because line/col were
|
|
// inadequate) anyway. Remove all 3 and replace them with a self-reference.
|
|
|
|
// Defeat MDNode uniquing for lexical blocks by using unique id.
|
|
static unsigned int unique_id = 0;
|
|
Metadata *Elts[] = {HeaderBuilder::get(dwarf::DW_TAG_lexical_block)
|
|
.concat(Line)
|
|
.concat(Col)
|
|
.concat(unique_id++)
|
|
.get(VMContext),
|
|
File.getFileNode(), getNonCompileUnitScope(Scope)};
|
|
DILexicalBlock R(MDNode::get(VMContext, Elts));
|
|
assert(R.Verify() &&
|
|
"createLexicalBlock should return a verifiable DILexicalBlock");
|
|
return R;
|
|
}
|
|
|
|
static Value *getDbgIntrinsicValueImpl(LLVMContext &VMContext, Value *V) {
|
|
assert(V && "no value passed to dbg intrinsic");
|
|
return MetadataAsValue::get(VMContext, ValueAsMetadata::get(V));
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDeclare(Value *Storage, DIVariable VarInfo,
|
|
DIExpression Expr,
|
|
Instruction *InsertBefore) {
|
|
assert(VarInfo.isVariable() &&
|
|
"empty or invalid DIVariable passed to dbg.declare");
|
|
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 CallInst::Create(DeclareFn, Args, "", InsertBefore);
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDeclare(Value *Storage, DIVariable VarInfo,
|
|
DIExpression Expr,
|
|
BasicBlock *InsertAtEnd) {
|
|
assert(VarInfo.isVariable() &&
|
|
"empty or invalid DIVariable passed to dbg.declare");
|
|
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 CallInst::Create(DeclareFn, Args, "", T);
|
|
else
|
|
return CallInst::Create(DeclareFn, Args, "", InsertAtEnd);
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V, uint64_t Offset,
|
|
DIVariable VarInfo,
|
|
DIExpression Expr,
|
|
Instruction *InsertBefore) {
|
|
assert(V && "no value passed to dbg.value");
|
|
assert(VarInfo.isVariable() &&
|
|
"empty or invalid DIVariable passed to dbg.value");
|
|
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 CallInst::Create(ValueFn, Args, "", InsertBefore);
|
|
}
|
|
|
|
Instruction *DIBuilder::insertDbgValueIntrinsic(Value *V, uint64_t Offset,
|
|
DIVariable VarInfo,
|
|
DIExpression Expr,
|
|
BasicBlock *InsertAtEnd) {
|
|
assert(V && "no value passed to dbg.value");
|
|
assert(VarInfo.isVariable() &&
|
|
"empty or invalid DIVariable passed to dbg.value");
|
|
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 CallInst::Create(ValueFn, Args, "", InsertAtEnd);
|
|
}
|
|
|
|
void DIBuilder::replaceVTableHolder(DICompositeType &T, DICompositeType VTableHolder) {
|
|
T.setContainingType(VTableHolder);
|
|
|
|
// If this didn't create a self-reference, just return.
|
|
if (T != VTableHolder)
|
|
return;
|
|
|
|
// Look for unresolved operands. T has dropped RAUW support and is already
|
|
// marked resolved, orphaning any cycles underneath it.
|
|
assert(T->isResolved() && "Expected self-reference to be resolved");
|
|
for (const MDOperand &O : T->operands())
|
|
if (auto *N = dyn_cast_or_null<MDNode>(O))
|
|
trackIfUnresolved(N);
|
|
}
|
|
|
|
void DIBuilder::replaceArrays(DICompositeType &T, DIArray Elements,
|
|
DIArray TParams) {
|
|
T.setArrays(Elements, TParams);
|
|
|
|
// 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);
|
|
if (TParams)
|
|
trackIfUnresolved(TParams);
|
|
}
|