#include "AsmPrinterHandler.h"
#include "DIE.h"
#include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/FoldingSet.h"
-#include "llvm/ADT/SetVector.h"
+#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/StringMap.h"
-#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/ADT/FoldingSet.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/MC/MCDwarf.h"
#include "llvm/Support/Allocator.h"
-#include "llvm/Support/DebugLoc.h"
namespace llvm {
-class DwarfUnit;
-class DwarfCompileUnit;
+class AsmPrinter;
+class ByteStreamer;
class ConstantInt;
class ConstantFP;
-class DbgVariable;
-class MachineFrameInfo;
+class DwarfCompileUnit;
+class DwarfDebug;
+class DwarfTypeUnit;
+class DwarfUnit;
class MachineModuleInfo;
-class MachineOperand;
-class MCAsmInfo;
-class MCObjectFileInfo;
-class DIEAbbrev;
-class DIE;
-class DIEBlock;
-class DIEEntry;
//===----------------------------------------------------------------------===//
/// \brief This class is used to record source line correspondence.
/// \brief This struct describes location entries emitted in the .debug_loc
/// section.
-class DotDebugLocEntry {
+class DebugLocEntry {
// Begin and end symbols for the address range that this location is valid.
const MCSymbol *Begin;
const MCSymbol *End;
// Type of entry that this represents.
- enum EntryType {
- E_Location,
- E_Integer,
- E_ConstantFP,
- E_ConstantInt
- };
+ enum EntryType { E_Location, E_Integer, E_ConstantFP, E_ConstantInt };
enum EntryType EntryKind;
union {
// The variable to which this location entry corresponds.
const MDNode *Variable;
- // Whether this location has been merged.
- bool Merged;
+ // The compile unit to which this location entry is referenced by.
+ const DwarfCompileUnit *Unit;
public:
- DotDebugLocEntry() : Begin(0), End(0), Variable(0), Merged(false) {
+ DebugLocEntry() : Begin(0), End(0), Variable(0), Unit(0) {
Constants.Int = 0;
}
- DotDebugLocEntry(const MCSymbol *B, const MCSymbol *E, MachineLocation &L,
- const MDNode *V)
- : Begin(B), End(E), Loc(L), Variable(V), Merged(false) {
+ DebugLocEntry(const MCSymbol *B, const MCSymbol *E, MachineLocation &L,
+ const MDNode *V, const DwarfCompileUnit *U)
+ : Begin(B), End(E), Loc(L), Variable(V), Unit(U) {
Constants.Int = 0;
EntryKind = E_Location;
}
- DotDebugLocEntry(const MCSymbol *B, const MCSymbol *E, int64_t i)
- : Begin(B), End(E), Variable(0), Merged(false) {
+ DebugLocEntry(const MCSymbol *B, const MCSymbol *E, int64_t i,
+ const DwarfCompileUnit *U)
+ : Begin(B), End(E), Variable(0), Unit(U) {
Constants.Int = i;
EntryKind = E_Integer;
}
- DotDebugLocEntry(const MCSymbol *B, const MCSymbol *E, const ConstantFP *FPtr)
- : Begin(B), End(E), Variable(0), Merged(false) {
+ DebugLocEntry(const MCSymbol *B, const MCSymbol *E, const ConstantFP *FPtr,
+ const DwarfCompileUnit *U)
+ : Begin(B), End(E), Variable(0), Unit(U) {
Constants.CFP = FPtr;
EntryKind = E_ConstantFP;
}
- DotDebugLocEntry(const MCSymbol *B, const MCSymbol *E,
- const ConstantInt *IPtr)
- : Begin(B), End(E), Variable(0), Merged(false) {
+ DebugLocEntry(const MCSymbol *B, const MCSymbol *E, const ConstantInt *IPtr,
+ const DwarfCompileUnit *U)
+ : Begin(B), End(E), Variable(0), Unit(U) {
Constants.CIP = IPtr;
EntryKind = E_ConstantInt;
}
/// \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; }
- void Merge(DotDebugLocEntry *Next) {
- if (!(Begin && Loc == Next->Loc && End == Next->Begin))
- return;
- Next->Begin = Begin;
- Merged = true;
+ bool isEmpty() const { return Begin == 0 && End == 0; }
+ bool Merge(const DebugLocEntry &Next) {
+ if (!(Begin && Loc == Next.Loc && End == Next.Begin))
+ return false;
+ End = Next.End;
+ return true;
}
bool isLocation() const { return EntryKind == E_Location; }
bool isInt() const { return EntryKind == E_Integer; }
const MDNode *getVariable() const { return Variable; }
const MCSymbol *getBeginSym() const { return Begin; }
const MCSymbol *getEndSym() const { return End; }
+ const DwarfCompileUnit *getCU() const { return Unit; }
MachineLocation getLoc() const { return Loc; }
};
assert(Var.isVariable() && "Invalid complex DbgVariable!");
return Var.hasComplexAddress();
}
- bool isBlockByrefVariable() const {
- assert(Var.isVariable() && "Invalid complex DbgVariable!");
- return Var.isBlockByrefVariable();
- }
+ bool isBlockByrefVariable() const;
unsigned getNumAddrElements() const {
assert(Var.isVariable() && "Invalid complex DbgVariable!");
return Var.getNumAddrElements();
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;
/// \brief Emit all of the units to the section listed with the given
/// abbreviation section.
- void emitUnits(DwarfDebug *DD, const MCSection *ASection,
- const MCSymbol *ASectionSym);
+ void emitUnits(DwarfDebug *DD, const MCSymbol *ASectionSym);
/// \brief Emit a set of abbreviations to the specific section.
void emitAbbrevs(const MCSection *);
/// \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; }
DwarfCompileUnit *FirstCU;
// Maps MDNode with its corresponding DwarfCompileUnit.
- DenseMap<const MDNode *, DwarfCompileUnit *> CUMap;
+ MapVector<const MDNode *, DwarfCompileUnit *> CUMap;
// Maps subprogram MDNode with its corresponding DwarfCompileUnit.
DenseMap<const MDNode *, DwarfCompileUnit *> SPMap;
// Maps a CU DIE with its corresponding DwarfCompileUnit.
DenseMap<const DIE *, DwarfCompileUnit *> CUDieMap;
- /// Maps MDNodes for type sysstem with the corresponding DIEs. These DIEs can
+ /// Maps MDNodes for type system 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;
- // Stores the current file ID for a given compile unit.
- 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;
-
// List of all labels used in aranges generation.
std::vector<SymbolCU> ArangeLabels;
// Collection of abstract variables.
DenseMap<const MDNode *, DbgVariable *> AbstractVariables;
- // Collection of DotDebugLocEntry.
- SmallVector<DotDebugLocEntry, 4> DotDebugLocEntries;
+ // Collection of DebugLocEntry.
+ SmallVector<SmallVector<DebugLocEntry, 4>, 4> DotDebugLocEntries;
// Collection of subprogram DIEs that are marked (at the end of the module)
// as DW_AT_inline.
// If nonnull, stores the current machine instruction we're processing.
const MachineInstr *CurMI;
+ // If nonnull, stores the section that the previous function was allocated to
+ // emitting.
+ const MCSection *PrevSection;
+
+ // If nonnull, stores the CU in which the previous subprogram was contained.
+ const DwarfCompileUnit *PrevCU;
+
// 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.
// 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;
// Holder for the skeleton information.
DwarfFile SkeletonHolder;
+ /// Store file names for type units under fission in a line table header that
+ /// will be emitted into debug_line.dwo.
+ // FIXME: replace this with a map from comp_dir to table so that we can emit
+ // multiple tables during LTO each of which uses directory 0, referencing the
+ // comp_dir of all the type units that use it.
+ MCDwarfDwoLineTable SplitTypeUnitFileTable;
+
+ // True iff there are multiple CUs in this module.
+ bool SingleCU;
+
+ MCDwarfDwoLineTable *getDwoLineTable(const DwarfCompileUnit &);
+
void addScopeVariable(LexicalScope *LS, DbgVariable *Var);
const SmallVectorImpl<DwarfUnit *> &getUnits() {
/// 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();
/// 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.
DwarfCompileUnit *constructSkeletonCU(const DwarfCompileUnit *CU);
+ /// \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 abbrev dwo section.
void emitDebugAbbrevDWO();
+ /// \brief Emit the debug line dwo section.
+ void emitDebugLineDWO();
+
/// \brief Emit the debug str dwo section.
void emitDebugStrDWO();
/// \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.
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();
+ void endInstruction() override;
/// \brief Add a DIE to the set of types that we're going to pull into
/// type units.
- void addDwarfTypeUnitType(DICompileUnit CUNode, StringRef Identifier,
+ void addDwarfTypeUnitType(DwarfCompileUnit &CU, StringRef Identifier,
DIE *Die, DICompositeType CTy);
/// \brief Add a label so that arange data can be generated for it.
/// \brief For symbols that have a size designated (e.g. common symbols),
/// this tracks that size.
- void setSymbolSize(const MCSymbol *Sym, uint64_t 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
- /// SourceIds map.
- unsigned getOrCreateSourceID(StringRef DirName, StringRef FullName,
- unsigned CUID);
-
/// \brief Recursively Emits a debug information entry.
void emitDIE(DIE *Die);
/// \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; }
/// 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 previous section that was emitted into.
+ const MCSection *getPrevSection() const { return PrevSection; }
+
+ /// Returns the previous CU that was being updated
+ const DwarfCompileUnit *getPrevCU() const { return PrevCU; }
+
+ /// Returns the entries for the .debug_loc section.
+ const SmallVectorImpl<SmallVector<DebugLocEntry, 4>> &
+ 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 DebugLocEntry &Entry);
+
/// Find the MDNode for the given reference.
template <typename T> T resolve(DIRef<T> Ref) const {
return Ref.resolve(TypeIdentifierMap);
}
+ /// \brief Return the TypeIdentifierMap.
+ const DITypeIdentifierMap &getTypeIdentifierMap() const {
+ return 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);
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