#include "AsmPrinterHandler.h"
#include "DIE.h"
#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/MapVector.h"
+#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/CodeGen/LexicalScopes.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"
// 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:
- DebugLocEntry() : Begin(0), End(0), Variable(0), Merged(false) {
+ DebugLocEntry() : Begin(0), End(0), Variable(0), Unit(0) {
Constants.Int = 0;
}
DebugLocEntry(const MCSymbol *B, const MCSymbol *E, MachineLocation &L,
- const MDNode *V)
- : Begin(B), End(E), Loc(L), Variable(V), Merged(false) {
+ const MDNode *V, const DwarfCompileUnit *U)
+ : Begin(B), End(E), Loc(L), Variable(V), Unit(U) {
Constants.Int = 0;
EntryKind = E_Location;
}
- DebugLocEntry(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;
}
- DebugLocEntry(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;
}
- DebugLocEntry(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() const { return Begin == 0 && End == 0; }
- bool isMerged() const { return Merged; }
- void Merge(DebugLocEntry *Next) {
- if (!(Begin && Loc == Next->Loc && End == Next->Begin))
- return;
- Next->Begin = Begin;
- Merged = true;
+ 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; }
};
/// \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 *);
// 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;
DenseMap<const MDNode *, DbgVariable *> AbstractVariables;
// Collection of DebugLocEntry.
- SmallVector<DebugLocEntry, 4> DotDebugLocEntries;
+ 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.
// 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.
+ /// 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() {
/// \brief Create new DwarfCompileUnit for the given metadata node with tag
/// DW_TAG_compile_unit.
- DwarfCompileUnit *constructDwarfCompileUnit(DICompileUnit DIUnit,
- bool Singular);
+ DwarfCompileUnit *constructDwarfCompileUnit(DICompileUnit DIUnit);
/// \brief Construct subprogram DIE.
void constructSubprogramDIE(DwarfCompileUnit *TheCU, const MDNode *N);
/// split dwarf proposal support.
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 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<DebugLocEntry> &getDebugLocEntries() const {
+ const SmallVectorImpl<SmallVector<DebugLocEntry, 4>> &
+ getDebugLocEntries() const {
return DotDebugLocEntries;
}
}
/// \brief Return the TypeIdentifierMap.
- const DITypeIdentifierMap& getTypeIdentifierMap() const {
+ const DITypeIdentifierMap &getTypeIdentifierMap() const {
return TypeIdentifierMap;
}
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