//
//===----------------------------------------------------------------------===//
-#ifndef CODEGEN_ASMPRINTER_DWARFDEBUG_H__
-#define CODEGEN_ASMPRINTER_DWARFDEBUG_H__
+#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFDEBUG_H
+#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFDEBUG_H
#include "DwarfFile.h"
#include "AsmPrinterHandler.h"
#include "DIE.h"
+#include "DbgValueHistoryCalculator.h"
#include "DebugLocEntry.h"
#include "DebugLocList.h"
#include "DwarfAccelTable.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/CodeGen/LexicalScopes.h"
+#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/DebugLoc.h"
#include "llvm/MC/MachineLocation.h"
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, DwarfDebug *DD)
- : Var(V), TheDIE(nullptr), DotDebugLocOffset(~0U), AbsVar(AV),
- MInsn(nullptr), FrameIndex(~0), DD(DD) {}
+ /// Construct a DbgVariable from a DIVariable.
+ DbgVariable(DIVariable V, DwarfDebug *DD)
+ : Var(V), TheDIE(nullptr), DotDebugLocOffset(~0U), MInsn(nullptr),
+ FrameIndex(~0), DD(DD) {}
+
+ /// Construct a DbgVariable from a DEBUG_VALUE.
+ /// AbstractVar may be NULL.
+ DbgVariable(const MachineInstr *DbgValue, DwarfDebug *DD)
+ : Var(DbgValue->getDebugVariable()), TheDIE(nullptr),
+ DotDebugLocOffset(~0U), MInsn(DbgValue), FrameIndex(~0), DD(DD) {}
// Accessors.
DIVariable getVariable() const { return Var; }
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; }
// Translate tag to proper Dwarf tag.
ScopeVariablesMap ScopeVariables;
// Collection of abstract variables.
- DenseMap<const MDNode *, DbgVariable *> AbstractVariables;
+ DenseMap<const MDNode *, std::unique_ptr<DbgVariable>> AbstractVariables;
+ SmallVector<std::unique_ptr<DbgVariable>, 64> ConcreteVariables;
// Collection of DebugLocEntry. Stored in a linked list so that DIELocLists
// can refer to them in spite of insertions into this list.
// Maps instruction with label emitted after instruction.
DenseMap<const MachineInstr *, MCSymbol *> LabelsAfterInsn;
- // Every user variable mentioned by a DBG_VALUE instruction in order of
- // appearance.
- 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;
+ // History of DBG_VALUE and clobber instructions for each user variable.
+ // Variables are listed in order of appearance.
DbgValueHistoryMap DbgValues;
// Previous instruction's location information. This is used to determine
MCSymbol *DwarfDebugLocSectionSym, *DwarfLineSectionSym, *DwarfAddrSectionSym;
MCSymbol *FunctionBeginSym, *FunctionEndSym;
MCSymbol *DwarfInfoDWOSectionSym, *DwarfAbbrevDWOSectionSym;
+ MCSymbol *DwarfTypesDWOSectionSym;
MCSymbol *DwarfStrDWOSectionSym;
MCSymbol *DwarfGnuPubNamesSectionSym, *DwarfGnuPubTypesSectionSym;
DwarfAccelTable AccelNamespace;
DwarfAccelTable AccelTypes;
+ DenseMap<const Function *, DISubprogram> FunctionDIs;
+
MCDwarfDwoLineTable *getDwoLineTable(const DwarfCompileUnit &);
void addScopeVariable(LexicalScope *LS, DbgVariable *Var);
}
/// \brief Find abstract variable associated with Var.
- DbgVariable *findAbstractVariable(DIVariable &Var, DebugLoc Loc);
+ DbgVariable *getExistingAbstractVariable(const DIVariable &DV,
+ DIVariable &Cleansed);
+ DbgVariable *getExistingAbstractVariable(const DIVariable &DV);
+ void createAbstractVariable(const DIVariable &DV, LexicalScope *Scope);
+ void ensureAbstractVariableIsCreated(const DIVariable &Var,
+ const MDNode *Scope);
+ void ensureAbstractVariableIsCreatedIfScoped(const DIVariable &Var,
+ const MDNode *Scope);
/// \brief Find DIE for the given subprogram and attach appropriate
/// 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(DwarfCompileUnit &SPCU, DISubprogram SP);
+ DIE &updateSubprogramScopeDIE(DwarfCompileUnit &SPCU, DISubprogram SP);
/// \brief A helper function to check whether the DIE for a given Scope is
/// going to be null.
/// \brief Construct a DIE for this scope.
std::unique_ptr<DIE> constructScopeDIE(DwarfCompileUnit &TheCU,
LexicalScope *Scope);
- /// \brief Construct a DIE for this scope.
- DIE *constructSubprogramScopeDIE(DwarfCompileUnit &TheCU, LexicalScope *Scope);
+ void createAndAddScopeChildren(DwarfCompileUnit &TheCU, LexicalScope *Scope,
+ DIE &ScopeDIE);
+ /// \brief Construct a DIE for this abstract scope.
+ void constructAbstractSubprogramScopeDIE(DwarfCompileUnit &TheCU,
+ LexicalScope *Scope);
+ /// \brief Construct a DIE for this subprogram scope.
+ DIE &constructSubprogramScopeDIE(DwarfCompileUnit &TheCU,
+ LexicalScope *Scope);
/// A helper function to create children of a Scope DIE.
DIE *createScopeChildrenDIE(DwarfCompileUnit &TheCU, LexicalScope *Scope,
SmallVectorImpl<std::unique_ptr<DIE>> &Children);
/// \brief Compute the size and offset of all the DIEs.
void computeSizeAndOffsets();
- /// \brief Attach DW_AT_inline attribute with inlined subprogram DIEs.
- void computeInlinedDIEs();
-
/// \brief Collect info for variables that were optimized out.
void collectDeadVariables();
+ void finishVariableDefinitions();
+
+ void finishSubprogramDefinitions();
+
/// \brief Finish off debug information after all functions have been
/// processed.
void finalizeModuleInfo();
/// DW_TAG_compile_unit.
DwarfCompileUnit &constructDwarfCompileUnit(DICompileUnit DIUnit);
- /// \brief Construct subprogram DIE.
- void constructSubprogramDIE(DwarfCompileUnit &TheCU, const MDNode *N);
-
/// \brief Construct imported_module or imported_declaration DIE.
void constructImportedEntityDIE(DwarfCompileUnit &TheCU, const MDNode *N);
/// \brief Populate LexicalScope entries with variables' info.
void collectVariableInfo(SmallPtrSet<const MDNode *, 16> &ProcessedVars);
+ /// \brief Build the location list for all DBG_VALUEs in the
+ /// function that describe the same variable.
+ void buildLocationList(SmallVectorImpl<DebugLocEntry> &DebugLoc,
+ const DbgValueHistoryMap::InstrRanges &Ranges);
+
/// \brief Collect variable information from the side table maintained
/// by MMI.
void collectVariableInfoFromMMITable(SmallPtrSet<const MDNode *, 16> &P);
/// \brief Return Label immediately following the instruction.
MCSymbol *getLabelAfterInsn(const MachineInstr *MI);
+ void attachRangesOrLowHighPC(DwarfCompileUnit &Unit, DIE &D,
+ const SmallVectorImpl<InsnRange> &Ranges);
void attachLowHighPC(DwarfCompileUnit &Unit, DIE &D, MCSymbol *Begin,
MCSymbol *End);
//
DwarfDebug(AsmPrinter *A, Module *M);
+ ~DwarfDebug() override;
+
void insertDIE(const MDNode *TypeMD, DIE *Die) {
MDTypeNodeToDieMap.insert(std::make_pair(TypeMD, Die));
}
/// \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);
+ /// \brief emit a single value for the debug loc section.
+ void emitDebugLocValue(ByteStreamer &Streamer,
+ const DebugLocEntry::Value &Value);
+ /// Emits an optimal (=sorted) sequence of DW_OP_pieces.
+ void emitLocPieces(ByteStreamer &Streamer,
+ const DITypeIdentifierMap &Map,
+ ArrayRef<DebugLocEntry::Value> Values);
/// Emit the location for a debug loc entry, including the size header.
void emitDebugLocEntryLocation(const DebugLocEntry &Entry);
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