index deb2e60689957afde39479470fd4600ed615b6c4..baf87323178d119bac99cc26555c0ea17d7e3d51 100644 (file)
#ifndef CODEGEN_ASMPRINTER_DWARFDEBUG_H__
#define CODEGEN_ASMPRINTER_DWARFDEBUG_H__
+#include "AsmPrinterHandler.h"
#include "DIE.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/FoldingSet.h"
+#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/LexicalScopes.h"
-#include "llvm/DebugInfo.h"
+#include "llvm/IR/DebugInfo.h"
+#include "llvm/IR/DebugLoc.h"
#include "llvm/MC/MachineLocation.h"
#include "llvm/Support/Allocator.h"
-#include "llvm/Support/DebugLoc.h"
namespace llvm {
-class CompileUnit;
+class ByteStreamer;
+class DwarfUnit;
+class DwarfCompileUnit;
class ConstantInt;
class ConstantFP;
class DbgVariable;
class MachineModuleInfo;
class MachineOperand;
class MCAsmInfo;
+class MCObjectFileInfo;
class DIEAbbrev;
class DIE;
-class DIEBlock;
+class DIELoc;
class DIEEntry;
//===----------------------------------------------------------------------===//
/// \brief This class is used to record source line correspondence.
class SrcLineInfo {
- unsigned Line; // Source line number.
- unsigned Column; // Source column.
- unsigned SourceID; // Source ID number.
- MCSymbol *Label; // Label in code ID number.
+ unsigned Line; // Source line number.
+ unsigned Column; // Source column.
+ unsigned SourceID; // Source ID number.
+ MCSymbol *Label; // Label in code ID number.
public:
SrcLineInfo(unsigned L, unsigned C, unsigned S, MCSymbol *label)
- : Line(L), Column(C), SourceID(S), Label(label) {}
+ : Line(L), Column(C), SourceID(S), Label(label) {}
// Accessors
unsigned getLine() const { return Line; }
/// \brief Empty entries are also used as a trigger to emit temp label. Such
/// labels are referenced is used to find debug_loc offset for a given DIE.
- bool isEmpty() { return Begin == 0 && End == 0; }
- bool isMerged() { return Merged; }
+ bool isEmpty() const { return Begin == 0 && End == 0; }
+ bool isMerged() const { return Merged; }
void Merge(DotDebugLocEntry *Next) {
if (!(Begin && Loc == Next->Loc && End == Next->Begin))
return;
Next->Begin = Begin;
Merged = true;
}
- bool isLocation() const { return EntryKind == E_Location; }
- bool isInt() const { return EntryKind == E_Integer; }
- bool isConstantFP() const { return EntryKind == E_ConstantFP; }
+ bool isLocation() const { return EntryKind == E_Location; }
+ bool isInt() const { return EntryKind == E_Integer; }
+ bool isConstantFP() const { return EntryKind == E_ConstantFP; }
bool isConstantInt() const { return EntryKind == E_ConstantInt; }
- int64_t getInt() const { return Constants.Int; }
- const ConstantFP *getConstantFP() const { return Constants.CFP; }
+ int64_t getInt() const { return Constants.Int; }
+ const ConstantFP *getConstantFP() const { return Constants.CFP; }
const ConstantInt *getConstantInt() const { return Constants.CIP; }
const MDNode *getVariable() const { return Variable; }
const MCSymbol *getBeginSym() const { return Begin; }
//===----------------------------------------------------------------------===//
/// \brief This class is used to track local variable information.
class DbgVariable {
- DIVariable Var; // Variable Descriptor.
- DIE *TheDIE; // Variable DIE.
- unsigned DotDebugLocOffset; // Offset in DotDebugLocEntries.
- DbgVariable *AbsVar; // Corresponding Abstract variable, if any.
- const MachineInstr *MInsn; // DBG_VALUE instruction of the variable.
+ DIVariable Var; // Variable Descriptor.
+ DIE *TheDIE; // Variable DIE.
+ unsigned DotDebugLocOffset; // Offset in DotDebugLocEntries.
+ DbgVariable *AbsVar; // Corresponding Abstract variable, if any.
+ const MachineInstr *MInsn; // DBG_VALUE instruction of the variable.
int FrameIndex;
+ DwarfDebug *DD;
+
public:
// AbsVar may be NULL.
- DbgVariable(DIVariable V, DbgVariable *AV)
- : Var(V), TheDIE(0), DotDebugLocOffset(~0U), AbsVar(AV), MInsn(0),
- FrameIndex(~0) {}
+ DbgVariable(DIVariable V, DbgVariable *AV, DwarfDebug *DD)
+ : Var(V), TheDIE(0), DotDebugLocOffset(~0U), AbsVar(AV), MInsn(0),
+ FrameIndex(~0), DD(DD) {}
// Accessors.
- DIVariable getVariable() const { return Var; }
- void setDIE(DIE *D) { TheDIE = D; }
- DIE *getDIE() const { return TheDIE; }
- void setDotDebugLocOffset(unsigned O) { DotDebugLocOffset = O; }
- unsigned getDotDebugLocOffset() const { return DotDebugLocOffset; }
- StringRef getName() const { return Var.getName(); }
+ DIVariable getVariable() const { return Var; }
+ void setDIE(DIE *D) { TheDIE = D; }
+ DIE *getDIE() const { return TheDIE; }
+ void setDotDebugLocOffset(unsigned O) { DotDebugLocOffset = O; }
+ unsigned getDotDebugLocOffset() const { return DotDebugLocOffset; }
+ StringRef getName() const { return Var.getName(); }
DbgVariable *getAbstractVariable() const { return AbsVar; }
- const MachineInstr *getMInsn() const { return MInsn; }
- void setMInsn(const MachineInstr *M) { MInsn = M; }
- int getFrameIndex() const { return FrameIndex; }
- void setFrameIndex(int FI) { FrameIndex = FI; }
+ const MachineInstr *getMInsn() const { return MInsn; }
+ void setMInsn(const MachineInstr *M) { MInsn = M; }
+ int getFrameIndex() const { return FrameIndex; }
+ void setFrameIndex(int FI) { FrameIndex = FI; }
// Translate tag to proper Dwarf tag.
- unsigned getTag() const {
+ uint16_t getTag() const {
if (Var.getTag() == dwarf::DW_TAG_arg_variable)
return dwarf::DW_TAG_formal_parameter;
return dwarf::DW_TAG_variable;
}
/// \brief Return true if DbgVariable is artificial.
- bool isArtificial() const {
+ bool isArtificial() const {
if (Var.isArtificial())
return true;
if (getType().isArtificial())
return false;
}
- bool isObjectPointer() const {
+ bool isObjectPointer() const {
if (Var.isObjectPointer())
return true;
if (getType().isObjectPointer())
return false;
}
- bool variableHasComplexAddress() const {
+ bool variableHasComplexAddress() const {
assert(Var.isVariable() && "Invalid complex DbgVariable!");
return Var.hasComplexAddress();
}
- bool isBlockByrefVariable() const {
+ bool isBlockByrefVariable() const {
assert(Var.isVariable() && "Invalid complex DbgVariable!");
return Var.isBlockByrefVariable();
}
- unsigned getNumAddrElements() const {
+ unsigned getNumAddrElements() const {
assert(Var.isVariable() && "Invalid complex DbgVariable!");
return Var.getNumAddrElements();
}
- uint64_t getAddrElement(unsigned i) const {
- return Var.getAddrElement(i);
- }
+ uint64_t getAddrElement(unsigned i) const { return Var.getAddrElement(i); }
DIType getType() const;
+
+private:
+ /// resolve - Look in the DwarfDebug map for the MDNode that
+ /// corresponds to the reference.
+ template <typename T> T resolve(DIRef<T> Ref) const;
};
/// \brief Collects and handles information specific to a particular
-/// collection of units.
-class DwarfUnits {
+/// collection of units. This collection represents all of the units
+/// that will be ultimately output into a single object file.
+class DwarfFile {
// Target of Dwarf emission, used for sizing of abbreviations.
AsmPrinter *Asm;
// Used to uniquely define abbreviations.
- FoldingSet<DIEAbbrev> *AbbreviationsSet;
+ FoldingSet<DIEAbbrev> AbbreviationsSet;
// A list of all the unique abbreviations in use.
- std::vector<DIEAbbrev *> *Abbreviations;
+ std::vector<DIEAbbrev *> Abbreviations;
// A pointer to all units in the section.
- SmallVector<CompileUnit *, 1> CUs;
+ SmallVector<DwarfUnit *, 1> CUs;
// Collection of strings for this unit and assorted symbols.
// A String->Symbol mapping of strings used by indirect
// references.
- typedef StringMap<std::pair<MCSymbol*, unsigned>,
- BumpPtrAllocator&> StrPool;
+ typedef StringMap<std::pair<MCSymbol *, unsigned>, BumpPtrAllocator &>
+ StrPool;
StrPool StringPool;
unsigned NextStringPoolNumber;
std::string StringPref;
+ struct AddressPoolEntry {
+ unsigned Number;
+ bool TLS;
+ AddressPoolEntry(unsigned Number, bool TLS) : Number(Number), TLS(TLS) {}
+ };
// Collection of addresses for this unit and assorted labels.
// A Symbol->unsigned mapping of addresses used by indirect
// references.
- typedef DenseMap<const MCExpr *, unsigned> AddrPool;
+ typedef DenseMap<const MCSymbol *, AddressPoolEntry> AddrPool;
AddrPool AddressPool;
unsigned NextAddrPoolNumber;
public:
- DwarfUnits(AsmPrinter *AP, FoldingSet<DIEAbbrev> *AS,
- std::vector<DIEAbbrev *> *A, const char *Pref,
- BumpPtrAllocator &DA)
- : Asm(AP), AbbreviationsSet(AS), Abbreviations(A), StringPool(DA),
- NextStringPoolNumber(0), StringPref(Pref), AddressPool(),
- NextAddrPoolNumber(0) {}
+ DwarfFile(AsmPrinter *AP, const char *Pref, BumpPtrAllocator &DA)
+ : Asm(AP), StringPool(DA), NextStringPoolNumber(0), StringPref(Pref),
+ AddressPool(), NextAddrPoolNumber(0) {}
+
+ ~DwarfFile();
+
+ const SmallVectorImpl<DwarfUnit *> &getUnits() { return CUs; }
/// \brief Compute the size and offset of a DIE given an incoming Offset.
unsigned computeSizeAndOffset(DIE *Die, unsigned Offset);
void assignAbbrevNumber(DIEAbbrev &Abbrev);
/// \brief Add a unit to the list of CUs.
- void addUnit(CompileUnit *CU) { CUs.push_back(CU); }
+ void addUnit(DwarfUnit *CU) { CUs.push_back(CU); }
/// \brief Emit all of the units to the section listed with the given
/// abbreviation section.
- void emitUnits(DwarfDebug *DD, const MCSection *USection,
- const MCSection *ASection, const MCSymbol *ASectionSym);
+ void emitUnits(DwarfDebug *DD, const MCSection *ASection,
+ const MCSymbol *ASectionSym);
+
+ /// \brief Emit a set of abbreviations to the specific section.
+ void emitAbbrevs(const MCSection *);
/// \brief Emit all of the strings to the section given.
void emitStrings(const MCSection *StrSection, const MCSection *OffsetSection,
/// \brief Returns the index into the address pool with the given
/// label/symbol.
- unsigned getAddrPoolIndex(const MCExpr *Sym);
- unsigned getAddrPoolIndex(const MCSymbol *Sym);
+ unsigned getAddrPoolIndex(const MCSymbol *Sym, bool TLS = false);
/// \brief Returns the address pool.
AddrPool *getAddrPool() { return &AddressPool; }
+};
- /// \brief for a given compile unit DIE, returns offset from beginning of
- /// debug info.
- unsigned getCUOffset(DIE *Die);
+/// \brief Helper used to pair up a symbol and its DWARF compile unit.
+struct SymbolCU {
+ SymbolCU(DwarfCompileUnit *CU, const MCSymbol *Sym) : Sym(Sym), CU(CU) {}
+ const MCSymbol *Sym;
+ DwarfCompileUnit *CU;
};
/// \brief Collects and handles dwarf debug information.
-class DwarfDebug {
+class DwarfDebug : public AsmPrinterHandler {
// Target of Dwarf emission.
AsmPrinter *Asm;
// All DIEValues are allocated through this allocator.
BumpPtrAllocator DIEValueAllocator;
- // Handle to the a compile unit used for the inline extension handling.
- CompileUnit *FirstCU;
+ // Handle to the compile unit used for the inline extension handling,
+ // this is just so that the DIEValue allocator has a place to store
+ // the particular elements.
+ // FIXME: Store these off of DwarfDebug instead?
+ DwarfCompileUnit *FirstCU;
- // Maps MDNode with its corresponding CompileUnit.
- DenseMap <const MDNode *, CompileUnit *> CUMap;
+ // Maps MDNode with its corresponding DwarfCompileUnit.
+ MapVector<const MDNode *, DwarfCompileUnit *> CUMap;
- // Maps subprogram MDNode with its corresponding CompileUnit.
- DenseMap <const MDNode *, CompileUnit *> SPMap;
+ // Maps subprogram MDNode with its corresponding DwarfCompileUnit.
+ DenseMap<const MDNode *, DwarfCompileUnit *> SPMap;
- // Used to uniquely define abbreviations.
- FoldingSet<DIEAbbrev> AbbreviationsSet;
+ // Maps a CU DIE with its corresponding DwarfCompileUnit.
+ DenseMap<const DIE *, DwarfCompileUnit *> CUDieMap;
- // A list of all the unique abbreviations in use.
- std::vector<DIEAbbrev *> Abbreviations;
+ /// Maps MDNodes for type sysstem with the corresponding DIEs. These DIEs can
+ /// be shared across CUs, that is why we keep the map here instead
+ /// of in DwarfCompileUnit.
+ DenseMap<const MDNode *, DIE *> MDTypeNodeToDieMap;
+
+ // Used to unique C++ member function declarations.
+ StringMap<const MDNode *> OdrMemberMap;
// Stores the current file ID for a given compile unit.
- DenseMap <unsigned, unsigned> FileIDCUMap;
+ DenseMap<unsigned, unsigned> FileIDCUMap;
// Source id map, i.e. CUID, source filename and directory,
// separated by a zero byte, mapped to a unique id.
- StringMap<unsigned, BumpPtrAllocator&> SourceIdMap;
+ StringMap<unsigned, BumpPtrAllocator &> SourceIdMap;
+
+ // List of all labels used in aranges generation.
+ std::vector<SymbolCU> ArangeLabels;
+
+ // Size of each symbol emitted (for those symbols that have a specific size).
+ DenseMap<const MCSymbol *, uint64_t> SymSize;
// Provides a unique id per text section.
- SetVector<const MCSection*> SectionMap;
+ typedef DenseMap<const MCSection *, SmallVector<SymbolCU, 8> > SectionMapType;
+ SectionMapType SectionMap;
// List of arguments for current function.
SmallVector<DbgVariable *, 8> CurrentFnArguments;
DenseMap<const MDNode *, DIE *> AbstractSPDies;
// Collection of dbg variables of a scope.
- typedef DenseMap<LexicalScope *,
- SmallVector<DbgVariable *, 8> > ScopeVariablesMap;
+ typedef DenseMap<LexicalScope *, SmallVector<DbgVariable *, 8> >
+ ScopeVariablesMap;
ScopeVariablesMap ScopeVariables;
// Collection of abstract variables.
// as DW_AT_inline.
SmallPtrSet<DIE *, 4> InlinedSubprogramDIEs;
- // Keep track of inlined functions and their location. This
- // information is used to populate the debug_inlined section.
- typedef std::pair<const MCSymbol *, DIE *> InlineInfoLabels;
- typedef DenseMap<const MDNode *,
- SmallVector<InlineInfoLabels, 4> > InlineInfoMap;
- InlineInfoMap InlineInfo;
- SmallVector<const MDNode *, 4> InlinedSPNodes;
-
// This is a collection of subprogram MDNodes that are processed to
// create DIEs.
SmallPtrSet<const MDNode *, 16> ProcessedSPNodes;
// Every user variable mentioned by a DBG_VALUE instruction in order of
// appearance.
- SmallVector<const MDNode*, 8> UserVariables;
+ SmallVector<const MDNode *, 8> UserVariables;
// For each user variable, keep a list of DBG_VALUE instructions in order.
// The list can also contain normal instructions that clobber the previous
// DBG_VALUE.
- typedef DenseMap<const MDNode*, SmallVector<const MachineInstr*, 4> >
- DbgValueHistoryMap;
+ typedef DenseMap<const MDNode *, SmallVector<const MachineInstr *, 4> >
+ DbgValueHistoryMap;
DbgValueHistoryMap DbgValues;
- SmallVector<const MCSymbol *, 8> DebugRangeSymbols;
-
// Previous instruction's location information. This is used to determine
// label location to indicate scope boundries in dwarf debug info.
DebugLoc PrevInstLoc;
// body.
DebugLoc PrologEndLoc;
+ // If nonnull, stores the current machine function we're processing.
+ const MachineFunction *CurFn;
+
+ // If nonnull, stores the current machine instruction we're processing.
+ const MachineInstr *CurMI;
+
// Section Symbols: these are assembler temporary labels that are emitted at
// the beginning of each supported dwarf section. These are used to form
// section offsets and are created by EmitSectionLabels.
MCSymbol *DwarfStrSectionSym, *TextSectionSym, *DwarfDebugRangeSectionSym;
MCSymbol *DwarfDebugLocSectionSym, *DwarfLineSectionSym, *DwarfAddrSectionSym;
MCSymbol *FunctionBeginSym, *FunctionEndSym;
- MCSymbol *DwarfAbbrevDWOSectionSym, *DwarfStrDWOSectionSym;
+ MCSymbol *DwarfInfoDWOSectionSym, *DwarfAbbrevDWOSectionSym;
+ MCSymbol *DwarfStrDWOSectionSym;
+ MCSymbol *DwarfGnuPubNamesSectionSym, *DwarfGnuPubTypesSectionSym;
// As an optimization, there is no need to emit an entry in the directory
// table for the same directory as DW_AT_comp_dir.
StringRef CompilationDir;
- // Counter for assigning globally unique IDs for CUs.
- unsigned GlobalCUIndexCount;
+ // Counter for assigning globally unique IDs for ranges.
+ unsigned GlobalRangeCount;
// Holder for the file specific debug information.
- DwarfUnits InfoHolder;
+ DwarfFile InfoHolder;
// Holders for the various debug information flags that we might need to
// have exposed. See accessor functions below for description.
- // Whether or not we're emitting info for older versions of gdb on darwin.
- bool IsDarwinGDBCompat;
-
// Holder for imported entities.
typedef SmallVector<std::pair<const MDNode *, const MDNode *>, 32>
- ImportedEntityMap;
+ ImportedEntityMap;
ImportedEntityMap ScopesWithImportedEntities;
+ // Map from MDNodes for user-defined types to the type units that describe
+ // them.
+ DenseMap<const MDNode *, const DwarfTypeUnit *> DwarfTypeUnits;
+
+ // Whether to emit the pubnames/pubtypes sections.
+ bool HasDwarfPubSections;
+
+ // Whether or not to use AT_ranges for compilation units.
+ bool HasCURanges;
+
+ // Whether we emitted a function into a section other than the default
+ // text.
+ bool UsedNonDefaultText;
+
+ // Version of dwarf we're emitting.
+ unsigned DwarfVersion;
+
+ // Maps from a type identifier to the actual MDNode.
+ DITypeIdentifierMap TypeIdentifierMap;
+
// DWARF5 Experimental Options
bool HasDwarfAccelTables;
bool HasSplitDwarf;
- unsigned DwarfVersion;
-
// Separated Dwarf Variables
// In general these will all be for bits that are left in the
// original object file, rather than things that are meant
// to be in the .dwo sections.
- // The CUs left in the original object file for separated debug info.
- SmallVector<CompileUnit *, 1> SkeletonCUs;
-
- // Used to uniquely define abbreviations for the skeleton emission.
- FoldingSet<DIEAbbrev> SkeletonAbbrevSet;
-
- // A list of all the unique abbreviations in use.
- std::vector<DIEAbbrev *> SkeletonAbbrevs;
-
// Holder for the skeleton information.
- DwarfUnits SkeletonHolder;
-
-private:
+ DwarfFile SkeletonHolder;
void addScopeVariable(LexicalScope *LS, DbgVariable *Var);
+ const SmallVectorImpl<DwarfUnit *> &getUnits() {
+ return InfoHolder.getUnits();
+ }
+
/// \brief Find abstract variable associated with Var.
DbgVariable *findAbstractVariable(DIVariable &Var, DebugLoc Loc);
/// DW_AT_low_pc and DW_AT_high_pc attributes. If there are global
/// variables in this scope then create and insert DIEs for these
/// variables.
- DIE *updateSubprogramScopeDIE(CompileUnit *SPCU, const MDNode *SPNode);
+ DIE *updateSubprogramScopeDIE(DwarfCompileUnit *SPCU, DISubprogram SP);
+
+ /// \brief A helper function to check whether the DIE for a given Scope is
+ /// going to be null.
+ bool isLexicalScopeDIENull(LexicalScope *Scope);
+
+ /// \brief A helper function to construct a RangeSpanList for a given
+ /// lexical scope.
+ void addScopeRangeList(DwarfCompileUnit *TheCU, DIE *ScopeDIE,
+ const SmallVectorImpl<InsnRange> &Range);
/// \brief Construct new DW_TAG_lexical_block for this scope and
/// attach DW_AT_low_pc/DW_AT_high_pc labels.
- DIE *constructLexicalScopeDIE(CompileUnit *TheCU, LexicalScope *Scope);
+ DIE *constructLexicalScopeDIE(DwarfCompileUnit *TheCU, LexicalScope *Scope);
/// \brief This scope represents inlined body of a function. Construct
/// DIE to represent this concrete inlined copy of the function.
- DIE *constructInlinedScopeDIE(CompileUnit *TheCU, LexicalScope *Scope);
+ DIE *constructInlinedScopeDIE(DwarfCompileUnit *TheCU, LexicalScope *Scope);
/// \brief Construct a DIE for this scope.
- DIE *constructScopeDIE(CompileUnit *TheCU, LexicalScope *Scope);
+ DIE *constructScopeDIE(DwarfCompileUnit *TheCU, LexicalScope *Scope);
+ /// A helper function to create children of a Scope DIE.
+ DIE *createScopeChildrenDIE(DwarfCompileUnit *TheCU, LexicalScope *Scope,
+ SmallVectorImpl<DIE *> &Children);
/// \brief Emit initial Dwarf sections with a label at the start of each one.
void emitSectionLabels();
/// open.
void endSections();
- /// \brief Emit a set of abbreviations to the specific section.
- void emitAbbrevs(const MCSection *, std::vector<DIEAbbrev*> *);
-
/// \brief Emit the debug info section.
void emitDebugInfo();
void emitAccelTypes();
/// \brief Emit visible names into a debug pubnames section.
- void emitDebugPubnames();
+ /// \param GnuStyle determines whether or not we want to emit
+ /// additional information into the table ala newer gcc for gdb
+ /// index.
+ void emitDebugPubNames(bool GnuStyle = false);
/// \brief Emit visible types into a debug pubtypes section.
- void emitDebugPubTypes();
+ /// \param GnuStyle determines whether or not we want to emit
+ /// additional information into the table ala newer gcc for gdb
+ /// index.
+ void emitDebugPubTypes(bool GnuStyle = false);
+
+ void
+ emitDebugPubSection(bool GnuStyle, const MCSection *PSec, StringRef Name,
+ const StringMap<const DIE *> &(DwarfUnit::*Accessor)()
+ const);
/// \brief Emit visible names into a debug str section.
void emitDebugStr();
/// \brief Emit visible names into a debug ranges section.
void emitDebugRanges();
- /// \brief Emit visible names into a debug macinfo section.
- void emitDebugMacInfo();
-
/// \brief Emit inline info using custom format.
void emitDebugInlineInfo();
/// DWARF 5 Experimental Split Dwarf Emitters
+ /// \brief Initialize common features of skeleton units.
+ void initSkeletonUnit(const DwarfUnit *U, DIE *Die, DwarfUnit *NewU);
+
/// \brief Construct the split debug info compile unit for the debug info
/// section.
- CompileUnit *constructSkeletonCU(const MDNode *);
+ DwarfCompileUnit *constructSkeletonCU(const DwarfCompileUnit *CU);
- /// \brief Emit the local split abbreviations.
- void emitSkeletonAbbrevs(const MCSection *);
+ /// \brief Construct the split debug info compile unit for the debug info
+ /// section.
+ DwarfTypeUnit *constructSkeletonTU(DwarfTypeUnit *TU);
/// \brief Emit the debug info dwo section.
void emitDebugInfoDWO();
/// \brief Emit the debug str dwo section.
void emitDebugStrDWO();
- /// \brief Create new CompileUnit for the given metadata node with tag
+ /// Flags to let the linker know we have emitted new style pubnames. Only
+ /// emit it here if we don't have a skeleton CU for split dwarf.
+ void addGnuPubAttributes(DwarfUnit *U, DIE *D) const;
+
+ /// \brief Create new DwarfCompileUnit for the given metadata node with tag
/// DW_TAG_compile_unit.
- CompileUnit *constructCompileUnit(const MDNode *N);
+ DwarfCompileUnit *constructDwarfCompileUnit(DICompileUnit DIUnit);
/// \brief Construct subprogram DIE.
- void constructSubprogramDIE(CompileUnit *TheCU, const MDNode *N);
+ void constructSubprogramDIE(DwarfCompileUnit *TheCU, const MDNode *N);
/// \brief Construct imported_module or imported_declaration DIE.
- void constructImportedEntityDIE(CompileUnit *TheCU, const MDNode *N);
+ void constructImportedEntityDIE(DwarfCompileUnit *TheCU, const MDNode *N);
/// \brief Construct import_module DIE.
- void constructImportedEntityDIE(CompileUnit *TheCU, const MDNode *N,
+ void constructImportedEntityDIE(DwarfCompileUnit *TheCU, const MDNode *N,
DIE *Context);
/// \brief Construct import_module DIE.
- void constructImportedEntityDIE(CompileUnit *TheCU,
- const DIImportedEntity &Module,
- DIE *Context);
+ void constructImportedEntityDIE(DwarfCompileUnit *TheCU,
+ const DIImportedEntity &Module, DIE *Context);
/// \brief Register a source line with debug info. Returns the unique
/// label that was emitted and which provides correspondence to the
/// \brief If Var is an current function argument that add it in
/// CurrentFnArguments list.
- bool addCurrentFnArgument(const MachineFunction *MF,
- DbgVariable *Var, LexicalScope *Scope);
+ bool addCurrentFnArgument(DbgVariable *Var, LexicalScope *Scope);
/// \brief Populate LexicalScope entries with variables' info.
- void collectVariableInfo(const MachineFunction *,
- SmallPtrSet<const MDNode *, 16> &ProcessedVars);
+ void collectVariableInfo(SmallPtrSet<const MDNode *, 16> &ProcessedVars);
/// \brief Collect variable information from the side table maintained
/// by MMI.
- void collectVariableInfoFromMMITable(const MachineFunction * MF,
- SmallPtrSet<const MDNode *, 16> &P);
+ void collectVariableInfoFromMMITable(SmallPtrSet<const MDNode *, 16> &P);
/// \brief Ensure that a label will be emitted before MI.
void requestLabelBeforeInsn(const MachineInstr *MI) {
- LabelsBeforeInsn.insert(std::make_pair(MI, (MCSymbol*)0));
+ LabelsBeforeInsn.insert(std::make_pair(MI, (MCSymbol *)0));
}
/// \brief Return Label preceding the instruction.
/// \brief Ensure that a label will be emitted after MI.
void requestLabelAfterInsn(const MachineInstr *MI) {
- LabelsAfterInsn.insert(std::make_pair(MI, (MCSymbol*)0));
+ LabelsAfterInsn.insert(std::make_pair(MI, (MCSymbol *)0));
}
/// \brief Return Label immediately following the instruction.
MCSymbol *getLabelAfterInsn(const MachineInstr *MI);
+ void attachLowHighPC(DwarfCompileUnit *Unit, DIE *D, MCSymbol *Begin,
+ MCSymbol *End);
+
public:
//===--------------------------------------------------------------------===//
// Main entry points.
//
DwarfDebug(AsmPrinter *A, Module *M);
- ~DwarfDebug();
+
+ void insertDIE(const MDNode *TypeMD, DIE *Die) {
+ MDTypeNodeToDieMap.insert(std::make_pair(TypeMD, Die));
+ }
+ DIE *getDIE(const MDNode *TypeMD) {
+ return MDTypeNodeToDieMap.lookup(TypeMD);
+ }
+
+ /// \brief Look up or create an entry in the OdrMemberMap.
+ const MDNode *&getOrCreateOdrMember(StringRef Key) {
+ return OdrMemberMap.GetOrCreateValue(Key).getValue();
+ }
/// \brief Emit all Dwarf sections that should come prior to the
/// content.
void beginModule();
/// \brief Emit all Dwarf sections that should come after the content.
- void endModule();
+ void endModule() override;
/// \brief Gather pre-function debug information.
- void beginFunction(const MachineFunction *MF);
+ void beginFunction(const MachineFunction *MF) override;
/// \brief Gather and emit post-function debug information.
- void endFunction(const MachineFunction *MF);
+ void endFunction(const MachineFunction *MF) override;
/// \brief Process beginning of an instruction.
- void beginInstruction(const MachineInstr *MI);
+ void beginInstruction(const MachineInstr *MI) override;
/// \brief Process end of an instruction.
- void endInstruction(const MachineInstr *MI);
+ void endInstruction() override;
+
+ /// \brief Add a DIE to the set of types that we're going to pull into
+ /// type units.
+ void addDwarfTypeUnitType(DwarfCompileUnit &CU, StringRef Identifier,
+ DIE *Die, DICompositeType CTy);
+
+ /// \brief Add a label so that arange data can be generated for it.
+ void addArangeLabel(SymbolCU SCU) { ArangeLabels.push_back(SCU); }
+
+ /// \brief For symbols that have a size designated (e.g. common symbols),
+ /// this tracks that size.
+ void setSymbolSize(const MCSymbol *Sym, uint64_t Size) override {
+ SymSize[Sym] = Size;
+ }
/// \brief Look up the source id with the given directory and source file
/// names. If none currently exists, create a new id and insert it in the
unsigned CUID);
/// \brief Recursively Emits a debug information entry.
- void emitDIE(DIE *Die, std::vector<DIEAbbrev *> *Abbrevs);
-
- /// \brief Returns whether or not to limit some of our debug
- /// output to the limitations of darwin gdb.
- bool useDarwinGDBCompat() { return IsDarwinGDBCompat; }
+ void emitDIE(DIE *Die);
// Experimental DWARF5 features.
/// \brief Returns whether or not to emit tables that dwarf consumers can
/// use to accelerate lookup.
- bool useDwarfAccelTables() { return HasDwarfAccelTables; }
+ bool useDwarfAccelTables() const { return HasDwarfAccelTables; }
/// \brief Returns whether or not to change the current debug info for the
/// split dwarf proposal support.
- bool useSplitDwarf() { return HasSplitDwarf; }
+ bool useSplitDwarf() const { return HasSplitDwarf; }
+
+ /// \brief Returns whether or not to use AT_ranges for compilation units.
+ bool useCURanges() const { return HasCURanges; }
/// Returns the Dwarf Version.
unsigned getDwarfVersion() const { return DwarfVersion; }
+
+ /// Returns the section symbol for the .debug_loc section.
+ MCSymbol *getDebugLocSym() const { return DwarfDebugLocSectionSym; }
+
+ /// Returns the entries for the .debug_loc section.
+ const SmallVectorImpl<DotDebugLocEntry> &getDebugLocEntries() const {
+ return DotDebugLocEntries;
+ }
+
+ /// \brief Emit an entry for the debug loc section. This can be used to
+ /// handle an entry that's going to be emitted into the debug loc section.
+ void emitDebugLocEntry(ByteStreamer &Streamer, const DotDebugLocEntry &Entry);
+
+ /// Find the MDNode for the given reference.
+ template <typename T> T resolve(DIRef<T> Ref) const {
+ return Ref.resolve(TypeIdentifierMap);
+ }
+
+ /// Find the DwarfCompileUnit for the given CU Die.
+ DwarfCompileUnit *lookupUnit(const DIE *CU) const {
+ return CUDieMap.lookup(CU);
+ }
+ /// isSubprogramContext - Return true if Context is either a subprogram
+ /// or another context nested inside a subprogram.
+ bool isSubprogramContext(const MDNode *Context);
};
} // End of namespace llvm