index 98623db7a61a734df60424f2df580c100b0c4723..1c4e0e552f5d82cc22169d272abf5ae58ff8dc89 100644 (file)
#include "DwarfDebug.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/Optional.h"
-#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/StringMap.h"
-#include "llvm/DebugInfo.h"
+#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/IR/DIBuilder.h"
+#include "llvm/IR/DebugInfo.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCSection.h"
+#include "llvm/MC/MCDwarf.h"
namespace llvm {
class ConstantInt;
class ConstantFP;
class DbgVariable;
+class DwarfCompileUnit;
// Data structure to hold a range for range lists.
class RangeSpan {
unsigned UniqueID;
/// Node - MDNode for the compile unit.
- DICompileUnit Node;
+ DICompileUnit CUNode;
/// Unit debug information entry.
- const OwningPtr<DIE> UnitDie;
+ const std::unique_ptr<DIE> UnitDie;
/// Offset of the UnitDie from beginning of debug info section.
unsigned DebugInfoOffset;
/// DIEBlocks - A list of all the DIEBlocks in use.
std::vector<DIEBlock *> DIEBlocks;
+
+ /// DIELocs - A list of all the DIELocs in use.
+ std::vector<DIELoc *> DIELocs;
/// ContainingTypeMap - This map is used to keep track of subprogram DIEs that
/// need DW_AT_containing_type attribute. This attribute points to a DIE that
/// corresponds to the MDNode mapped with the subprogram DIE.
DenseMap<DIE *, const MDNode *> ContainingTypeMap;
+ // List of ranges for a given compile unit.
+ SmallVector<RangeSpan, 1> CURanges;
+
// List of range lists for a given compile unit, separate from the ranges for
// the CU itself.
SmallVector<RangeSpanList, 1> CURangeLists;
/// The label for the start of the range sets for the elements of this unit.
MCSymbol *LabelRange;
+ /// Skeleton unit associated with this unit.
+ DwarfUnit *Skeleton;
+
DwarfUnit(unsigned UID, DIE *D, DICompileUnit CU, AsmPrinter *A,
DwarfDebug *DW, DwarfFile *DWU);
public:
virtual ~DwarfUnit();
+ /// Set the skeleton unit associated with this unit.
+ void setSkeleton(DwarfUnit *Skel) { Skeleton = Skel; }
+
+ /// Get the skeleton unit associated with this unit.
+ DwarfUnit *getSkeleton() const { return Skeleton; }
+
/// Pass in the SectionSym even though we could recreate it in every compile
/// unit (type units will have actually distinct symbols once they're in
/// comdat sections).
return Section;
}
+ /// If there's a skeleton then return the section symbol for the skeleton
+ /// unit, otherwise return the section symbol for this unit.
+ MCSymbol *getLocalSectionSym() const {
+ if (Skeleton)
+ return Skeleton->getSectionSym();
+ return getSectionSym();
+ }
+
MCSymbol *getSectionSym() const {
assert(Section);
return SectionSym;
}
+ /// If there's a skeleton then return the begin label for the skeleton unit,
+ /// otherwise return the local label for this unit.
+ MCSymbol *getLocalLabelBegin() const {
+ if (Skeleton)
+ return Skeleton->getLabelBegin();
+ return getLabelBegin();
+ }
+
MCSymbol *getLabelBegin() const {
assert(Section);
return LabelBegin;
// Accessors.
unsigned getUniqueID() const { return UniqueID; }
- virtual uint16_t getLanguage() const = 0;
- DICompileUnit getNode() const { return Node; }
+ uint16_t getLanguage() const { return CUNode.getLanguage(); }
+ DICompileUnit getCUNode() const { return CUNode; }
DIE *getUnitDie() const { return UnitDie.get(); }
const StringMap<const DIE *> &getGlobalNames() const { return GlobalNames; }
const StringMap<const DIE *> &getGlobalTypes() const { return GlobalTypes; }
/// hasContent - Return true if this compile unit has something to write out.
bool hasContent() const { return !UnitDie->getChildren().empty(); }
+ /// addRange - Add an address range to the list of ranges for this unit.
+ void addRange(RangeSpan Range) {
+ // Only add a range for this unit if we're emitting full debug.
+ if (getCUNode().getEmissionKind() == DIBuilder::FullDebug)
+ CURanges.push_back(Range);
+ }
+
+ /// getRanges - Get the list of ranges for this unit.
+ const SmallVectorImpl<RangeSpan> &getRanges() const { return CURanges; }
+ SmallVectorImpl<RangeSpan> &getRanges() { return CURanges; }
+
/// addRangeList - Add an address range list to the list of range lists.
void addRangeList(RangeSpanList Ranges) { CURangeLists.push_back(Ranges); }
/// kept in DwarfDebug.
DIE *getDIE(DIDescriptor D) const;
- /// getDIEBlock - Returns a fresh newly allocated DIEBlock.
- DIEBlock *getDIEBlock() { return new (DIEValueAllocator) DIEBlock(); }
+ /// getDIELoc - Returns a fresh newly allocated DIELoc.
+ DIELoc *getDIELoc() { return new (DIEValueAllocator) DIELoc(); }
/// insertDIE - Insert DIE into the map. We delegate the request to DwarfDebug
/// when the MDNode can be part of the type system, since DIEs for
void addUInt(DIE *Die, dwarf::Attribute Attribute, Optional<dwarf::Form> Form,
uint64_t Integer);
- void addUInt(DIEBlock *Block, dwarf::Form Form, uint64_t Integer);
+ void addUInt(DIE *Block, dwarf::Form Form, uint64_t Integer);
/// addSInt - Add an signed integer attribute data and value.
void addSInt(DIE *Die, dwarf::Attribute Attribute, Optional<dwarf::Form> Form,
int64_t Integer);
- void addSInt(DIEBlock *Die, Optional<dwarf::Form> Form, int64_t Integer);
+ void addSInt(DIELoc *Die, Optional<dwarf::Form> Form, int64_t Integer);
/// addString - Add a string attribute data and value.
void addString(DIE *Die, dwarf::Attribute Attribute, const StringRef Str);
const StringRef Str);
/// addExpr - Add a Dwarf expression attribute data and value.
- void addExpr(DIEBlock *Die, dwarf::Form Form, const MCExpr *Expr);
+ void addExpr(DIELoc *Die, dwarf::Form Form, const MCExpr *Expr);
/// addLabel - Add a Dwarf label attribute data and value.
void addLabel(DIE *Die, dwarf::Attribute Attribute, dwarf::Form Form,
const MCSymbol *Label);
- void addLabel(DIEBlock *Die, dwarf::Form Form, const MCSymbol *Label);
+ void addLabel(DIELoc *Die, dwarf::Form Form, const MCSymbol *Label);
+
+ /// addLocationList - Add a Dwarf loclistptr attribute data and value.
+ void addLocationList(DIE *Die, dwarf::Attribute Attribute, unsigned Index);
/// addSectionLabel - Add a Dwarf section label attribute data and value.
///
/// addOpAddress - Add a dwarf op address data and value using the
/// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
- void addOpAddress(DIEBlock *Die, const MCSymbol *Label);
+ void addOpAddress(DIELoc *Die, const MCSymbol *Label);
/// addSectionDelta - Add a label delta attribute data and value.
void addSectionDelta(DIE *Die, dwarf::Attribute Attribute, const MCSymbol *Hi,
const MCSymbol *Lo);
+ /// addLabelDelta - Add a label delta attribute data and value.
+ void addLabelDelta(DIE *Die, dwarf::Attribute Attribute, const MCSymbol *Hi,
+ const MCSymbol *Lo);
+
/// addDIEEntry - Add a DIE attribute data and value.
void addDIEEntry(DIE *Die, dwarf::Attribute Attribute, DIE *Entry);
/// addDIEEntry - Add a DIE attribute data and value.
void addDIEEntry(DIE *Die, dwarf::Attribute Attribute, DIEEntry *Entry);
+ void addDIETypeSignature(DIE *Die, const DwarfTypeUnit &Type);
+
+ /// addBlock - Add block data.
+ void addBlock(DIE *Die, dwarf::Attribute Attribute, DIELoc *Block);
+
/// addBlock - Add block data.
void addBlock(DIE *Die, dwarf::Attribute Attribute, DIEBlock *Block);
/// addSourceLine - Add location information to specified debug information
/// entry.
+ void addSourceLine(DIE *Die, unsigned Line, StringRef File,
+ StringRef Directory);
void addSourceLine(DIE *Die, DIVariable V);
void addSourceLine(DIE *Die, DIGlobalVariable G);
void addSourceLine(DIE *Die, DISubprogram SP);
void addTemplateParams(DIE &Buffer, DIArray TParams);
/// addRegisterOp - Add register operand.
- void addRegisterOp(DIEBlock *TheDie, unsigned Reg);
+ void addRegisterOp(DIELoc *TheDie, unsigned Reg);
/// addRegisterOffset - Add register offset.
- void addRegisterOffset(DIEBlock *TheDie, unsigned Reg, int64_t Offset);
+ void addRegisterOffset(DIELoc *TheDie, unsigned Reg, int64_t Offset);
/// addComplexAddress - Start with the address based on the location provided,
/// and generate the DWARF information necessary to find the actual variable
/// constructVariableDIE - Construct a DIE for the given DbgVariable.
DIE *constructVariableDIE(DbgVariable &DV, bool isScopeAbstract);
+ /// constructSubprogramArguments - Construct function argument DIEs.
+ void constructSubprogramArguments(DIE &Buffer, DIArray Args);
+
/// Create a DIE with the given Tag, add the DIE to its parent, and
/// call insertDIE if MD is not null.
DIE *createAndAddDIE(unsigned Tag, DIE &Parent,
virtual void emitHeader(const MCSection *ASection,
const MCSymbol *ASectionSym) const;
+ virtual DwarfCompileUnit &getCU() = 0;
+
+ /// \brief Return whether this compilation unit has the
+ /// one-definition-rule (ODR). In C++ this allows the compiler to
+ /// perform type unique during LTO.
+ bool hasODR() const {
+ switch (getLanguage()) {
+ case dwarf::DW_LANG_C_plus_plus:
+ case dwarf::DW_LANG_C_plus_plus_03:
+ case dwarf::DW_LANG_C_plus_plus_11:
+ // For all we care, the C++ part of the language has the ODR and
+ // ObjC methods are not represented in a way that they could be
+ // confused with C++ member functions.
+ case dwarf::DW_LANG_ObjC_plus_plus:
+ return true;
+ default:
+ return false;
+ }
+ }
+
+ /// \brief Unique C++ member function declarations based on their
+ /// context+mangled name.
+ DISubprogram getOdrUniqueSubprogram(DIScope Context, DISubprogram SP) const;
+
protected:
/// getOrCreateStaticMemberDIE - Create new static data member DIE.
DIE *getOrCreateStaticMemberDIE(DIDerivedType DT);
+ /// 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 line table.
+ virtual unsigned getOrCreateSourceID(StringRef File, StringRef Directory) = 0;
+
private:
/// constructTypeDIE - Construct basic type die from DIBasicType.
void constructTypeDIE(DIE &Buffer, DIBasicType BTy);
};
class DwarfCompileUnit : public DwarfUnit {
+ /// The attribute index of DW_AT_stmt_list in the compile unit DIE, avoiding
+ /// the need to search for it in applyStmtList.
+ unsigned stmtListIndex;
+
public:
DwarfCompileUnit(unsigned UID, DIE *D, DICompileUnit Node, AsmPrinter *A,
DwarfDebug *DW, DwarfFile *DWU);
- virtual ~DwarfCompileUnit() LLVM_OVERRIDE;
+
+ void initStmtList(MCSymbol *DwarfLineSectionSym);
+
+ /// Apply the DW_AT_stmt_list from this compile unit to the specified DIE.
+ void applyStmtList(DIE &D);
/// createGlobalVariableDIE - create global variable DIE.
void createGlobalVariableDIE(DIGlobalVariable GV);
/// either DW_FORM_addr or DW_FORM_GNU_addr_index.
void addLabelAddress(DIE *Die, dwarf::Attribute Attribute, MCSymbol *Label);
- uint16_t getLanguage() const LLVM_OVERRIDE { return getNode().getLanguage(); }
+ DwarfCompileUnit &getCU() override { return *this; }
+
+ unsigned getOrCreateSourceID(StringRef FileName, StringRef DirName) override;
};
class DwarfTypeUnit : public DwarfUnit {
private:
- uint16_t Language;
uint64_t TypeSignature;
const DIE *Ty;
+ DwarfCompileUnit &CU;
+ MCDwarfDwoLineTable *SplitLineTable;
public:
- DwarfTypeUnit(unsigned UID, DIE *D, uint16_t Language, AsmPrinter *A,
- DwarfDebug *DW, DwarfFile *DWU);
- virtual ~DwarfTypeUnit() LLVM_OVERRIDE;
+ DwarfTypeUnit(unsigned UID, DIE *D, DwarfCompileUnit &CU, AsmPrinter *A,
+ DwarfDebug *DW, DwarfFile *DWU,
+ MCDwarfDwoLineTable *SplitLineTable = nullptr);
void setTypeSignature(uint64_t Signature) { TypeSignature = Signature; }
+ uint64_t getTypeSignature() const { return TypeSignature; }
void setType(const DIE *Ty) { this->Ty = Ty; }
- uint16_t getLanguage() const LLVM_OVERRIDE { return Language; }
/// Emit the header for this unit, not including the initial length field.
void emitHeader(const MCSection *ASection, const MCSymbol *ASectionSym) const
- LLVM_OVERRIDE;
- unsigned getHeaderSize() const LLVM_OVERRIDE {
+ override;
+ unsigned getHeaderSize() const override {
return DwarfUnit::getHeaderSize() + sizeof(uint64_t) + // Type Signature
sizeof(uint32_t); // Type DIE Offset
}
void initSection(const MCSection *Section);
+ DwarfCompileUnit &getCU() override { return CU; }
+
+protected:
+ unsigned getOrCreateSourceID(StringRef File, StringRef Directory) override;
};
} // end llvm namespace
#endif