#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/Analysis/DebugInfo.h"
#include "DIE.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/UniqueVector.h"
#include "llvm/Support/Allocator.h"
+#include "llvm/Support/DebugLoc.h"
namespace llvm {
class DIEBlock;
class DIEEntry;
-class DIEnumerator;
-class DIDescriptor;
-class DIVariable;
-class DIGlobal;
-class DIGlobalVariable;
-class DISubprogram;
-class DIBasicType;
-class DIDerivedType;
-class DIType;
-class DINameSpace;
-class DISubrange;
-class DICompositeType;
-
//===----------------------------------------------------------------------===//
/// SrcLineInfo - This class is used to record source line correspondence.
///
MCSymbol *getLabel() const { return Label; }
};
+/// DotDebugLocEntry - This struct describes location entries emitted in
+/// .debug_loc section.
+typedef struct DotDebugLocEntry {
+ const MCSymbol *Begin;
+ const MCSymbol *End;
+ MachineLocation Loc;
+ const MDNode *Variable;
+ bool Merged;
+ bool Constant;
+ enum EntryType {
+ E_Location,
+ E_Integer,
+ E_ConstantFP,
+ E_ConstantInt
+ };
+ enum EntryType EntryKind;
+
+ union {
+ int64_t Int;
+ const ConstantFP *CFP;
+ const ConstantInt *CIP;
+ } Constants;
+ DotDebugLocEntry()
+ : Begin(0), End(0), Variable(0), Merged(false),
+ Constant(false) { 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),
+ Constant(false) { Constants.Int = 0; EntryKind = E_Location; }
+ DotDebugLocEntry(const MCSymbol *B, const MCSymbol *E, int64_t i)
+ : Begin(B), End(E), Variable(0), Merged(false),
+ Constant(true) { Constants.Int = i; EntryKind = E_Integer; }
+ DotDebugLocEntry(const MCSymbol *B, const MCSymbol *E, const ConstantFP *FPtr)
+ : Begin(B), End(E), Variable(0), Merged(false),
+ Constant(true) { Constants.CFP = FPtr; EntryKind = E_ConstantFP; }
+ DotDebugLocEntry(const MCSymbol *B, const MCSymbol *E, const ConstantInt *IPtr)
+ : Begin(B), End(E), Variable(0), Merged(false),
+ Constant(true) { Constants.CIP = IPtr; EntryKind = E_ConstantInt; }
+
+ /// 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 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() { return Constants.Int; }
+ const ConstantFP *getConstantFP() { return Constants.CFP; }
+ const ConstantInt *getConstantInt() { return Constants.CIP; }
+} DotDebugLocEntry;
+
+//===----------------------------------------------------------------------===//
+/// DbgVariable - This class is used to track local variable information.
+///
+class DbgVariable {
+ DIVariable Var; // Variable Descriptor.
+ DIE *TheDIE; // Variable DIE.
+ unsigned DotDebugLocOffset; // Offset in DotDebugLocEntries.
+public:
+ // AbsVar may be NULL.
+ DbgVariable(DIVariable V) : Var(V), TheDIE(0), DotDebugLocOffset(~0U) {}
+
+ // 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(); }
+ unsigned getTag() const { return Var.getTag(); }
+ bool variableHasComplexAddress() const {
+ assert(Var.Verify() && "Invalid complex DbgVariable!");
+ return Var.hasComplexAddress();
+ }
+ bool isBlockByrefVariable() const {
+ assert(Var.Verify() && "Invalid complex DbgVariable!");
+ return Var.isBlockByrefVariable();
+ }
+ unsigned getNumAddrElements() const {
+ assert(Var.Verify() && "Invalid complex DbgVariable!");
+ return Var.getNumAddrElements();
+ }
+ uint64_t getAddrElement(unsigned i) const {
+ return Var.getAddrElement(i);
+ }
+ DIType getType() const;
+};
+
class DwarfDebug {
/// Asm - Target of Dwarf emission.
AsmPrinter *Asm;
///
std::vector<DIEAbbrev *> Abbreviations;
- /// DirectoryIdMap - Directory name to directory id map.
- ///
- StringMap<unsigned> DirectoryIdMap;
-
- /// DirectoryNames - A list of directory names.
- SmallVector<std::string, 8> DirectoryNames;
-
- /// SourceFileIdMap - Source file name to source file id map.
- ///
- StringMap<unsigned> SourceFileIdMap;
-
- /// SourceFileNames - A list of source file names.
- SmallVector<std::string, 8> SourceFileNames;
-
/// SourceIdMap - Source id map, i.e. pair of directory id and source file
/// id mapped to a unique id.
- DenseMap<std::pair<unsigned, unsigned>, unsigned> SourceIdMap;
-
- /// SourceIds - Reverse map from source id to directory id + file id pair.
- ///
- SmallVector<std::pair<unsigned, unsigned>, 8> SourceIds;
-
- /// Lines - List of source line correspondence.
- std::vector<SrcLineInfo> Lines;
-
- /// DIEBlocks - A list of all the DIEBlocks in use.
- std::vector<DIEBlock *> DIEBlocks;
-
- // DIEValueAllocator - All DIEValues are allocated through this allocator.
- BumpPtrAllocator DIEValueAllocator;
+ StringMap<unsigned> SourceIdMap;
/// StringPool - A String->Symbol mapping of strings used by indirect
/// references.
///
UniqueVector<const MCSection*> SectionMap;
- /// SectionSourceLines - Tracks line numbers per text section.
+ /// CurrentFnDbgScope - Top level scope for the current function.
///
- std::vector<std::vector<SrcLineInfo> > SectionSourceLines;
-
- // CurrentFnDbgScope - Top level scope for the current function.
- //
DbgScope *CurrentFnDbgScope;
+ /// CurrentFnArguments - List of Arguments (DbgValues) for current function.
+ SmallVector<DbgVariable *, 8> CurrentFnArguments;
+
/// DbgScopeMap - Tracks the scopes in the current function. Owns the
/// contained DbgScope*s.
///
/// not included DbgScopeMap. AbstractScopes owns its DbgScope*s.
DenseMap<const MDNode *, DbgScope *> AbstractScopes;
+ /// AbstractSPDies - Collection of abstract subprogram DIEs.
+ DenseMap<const MDNode *, DIE *> AbstractSPDies;
+
/// AbstractScopesList - Tracks abstract scopes constructed while processing
/// a function. This list is cleared during endFunction().
SmallVector<DbgScope *, 4>AbstractScopesList;
/// machine instruction.
DenseMap<const DbgVariable *, const MachineInstr *> DbgVariableToDbgInstMap;
- /// DbgVariableLabelsMap - Maps DbgVariable to corresponding MCSymbol.
- DenseMap<const DbgVariable *, const MCSymbol *> DbgVariableLabelsMap;
-
- /// DotDebugLocEntry - This struct describes location entries emitted in
- /// .debug_loc section.
- typedef struct DotDebugLocEntry {
- const MCSymbol *Begin;
- const MCSymbol *End;
- MachineLocation Loc;
- DotDebugLocEntry() : Begin(0), End(0) {}
- DotDebugLocEntry(const MCSymbol *B, const MCSymbol *E,
- MachineLocation &L) : Begin(B), End(E), Loc(L) {}
- /// 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; }
- } DotDebugLocEntry;
-
/// DotDebugLocEntries - Collection of DotDebugLocEntry.
SmallVector<DotDebugLocEntry, 4> DotDebugLocEntries;
/// corresponds to the MDNode mapped with the subprogram DIE.
DenseMap<DIE *, const MDNode *> ContainingTypeMap;
- typedef SmallVector<DbgScope *, 2> ScopeVector;
- SmallPtrSet<const MachineInstr *, 8> InsnsBeginScopeSet;
- SmallPtrSet<const MachineInstr *, 8> InsnsEndScopeSet;
-
/// InlineInfo - Keep track of inlined functions and their location. This
/// information is used to populate debug_inlined section.
typedef std::pair<const MCSymbol *, DIE *> InlineInfoLabels;
DenseMap<const MDNode *, SmallVector<InlineInfoLabels, 4> > InlineInfo;
SmallVector<const MDNode *, 4> InlinedSPNodes;
+ // ProcessedSPNodes - This is a collection of subprogram MDNodes that
+ // are processed to create DIEs.
+ SmallPtrSet<const MDNode *, 16> ProcessedSPNodes;
+
/// LabelsBeforeInsn - Maps instruction with label emitted before
/// instruction.
DenseMap<const MachineInstr *, MCSymbol *> LabelsBeforeInsn;
/// instruction.
DenseMap<const MachineInstr *, MCSymbol *> LabelsAfterInsn;
- /// insnNeedsLabel - Collection of instructions that need a label to mark
- /// a debuggging information entity.
- SmallPtrSet<const MachineInstr *, 8> InsnNeedsLabel;
+ /// UserVariables - Every user variable mentioned by a DBG_VALUE instruction
+ /// in order of appearance.
+ SmallVector<const MDNode*, 8> UserVariables;
- /// ProcessedArgs - Collection of arguments already processed.
- SmallPtrSet<const MDNode *, 8> ProcessedArgs;
+ /// DbgValues - 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;
+ DbgValueHistoryMap DbgValues;
SmallVector<const MCSymbol *, 8> DebugRangeSymbols;
DebugLoc PrevInstLoc;
MCSymbol *PrevLabel;
+ /// PrologEndLoc - This location indicates end of function prologue and
+ /// beginning of function body.
+ DebugLoc PrologEndLoc;
+
struct FunctionDebugFrameInfo {
unsigned Number;
std::vector<MachineMove> Moves;
std::vector<FunctionDebugFrameInfo> DebugFrames;
+ // DIEValueAllocator - All DIEValues are allocated through this allocator.
+ BumpPtrAllocator DIEValueAllocator;
+
// 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 *DwarfFrameSectionSym, *DwarfInfoSectionSym, *DwarfAbbrevSectionSym;
+ MCSymbol *DwarfInfoSectionSym, *DwarfAbbrevSectionSym;
MCSymbol *DwarfStrSectionSym, *TextSectionSym, *DwarfDebugRangeSectionSym;
MCSymbol *DwarfDebugLocSectionSym;
MCSymbol *FunctionBeginSym, *FunctionEndSym;
-private:
-
- /// getSourceDirectoryAndFileIds - Return the directory and file ids that
- /// maps to the source id. Source id starts at 1.
- std::pair<unsigned, unsigned>
- getSourceDirectoryAndFileIds(unsigned SId) const {
- return SourceIds[SId-1];
- }
-
- /// getNumSourceDirectories - Return the number of source directories in the
- /// debug info.
- unsigned getNumSourceDirectories() const {
- return DirectoryNames.size();
- }
- /// getSourceDirectoryName - Return the name of the directory corresponding
- /// to the id.
- const std::string &getSourceDirectoryName(unsigned Id) const {
- return DirectoryNames[Id - 1];
- }
-
- /// getSourceFileName - Return the name of the source file corresponding
- /// to the id.
- const std::string &getSourceFileName(unsigned Id) const {
- return SourceFileNames[Id - 1];
- }
-
- /// getNumSourceIds - Return the number of unique source ids.
- unsigned getNumSourceIds() const {
- return SourceIds.size();
- }
+private:
/// assignAbbrevNumber - Define a unique number for the abbreviation.
///
void assignAbbrevNumber(DIEAbbrev &Abbrev);
- /// createDIEEntry - Creates a new DIEEntry to be a proxy for a debug
- /// information entry.
- DIEEntry *createDIEEntry(DIE *Entry);
-
- /// addUInt - Add an unsigned integer attribute data and value.
- ///
- void addUInt(DIE *Die, unsigned Attribute, unsigned Form, uint64_t Integer);
-
- /// addSInt - Add an signed integer attribute data and value.
- ///
- void addSInt(DIE *Die, unsigned Attribute, unsigned Form, int64_t Integer);
-
- /// addString - Add a string attribute data and value.
- ///
- void addString(DIE *Die, unsigned Attribute, unsigned Form,
- const StringRef Str);
-
- /// addLabel - Add a Dwarf label attribute data and value.
- ///
- void addLabel(DIE *Die, unsigned Attribute, unsigned Form,
- const MCSymbol *Label);
-
- /// addDelta - Add a label delta attribute data and value.
- ///
- void addDelta(DIE *Die, unsigned Attribute, unsigned Form,
- const MCSymbol *Hi, const MCSymbol *Lo);
-
- /// addDIEEntry - Add a DIE attribute data and value.
- ///
- void addDIEEntry(DIE *Die, unsigned Attribute, unsigned Form, DIE *Entry);
-
- /// addBlock - Add block data.
- ///
- void addBlock(DIE *Die, unsigned Attribute, unsigned Form, DIEBlock *Block);
-
- /// addSourceLine - Add location information to specified debug information
- /// entry.
- void addSourceLine(DIE *Die, const DIVariable *V);
- void addSourceLine(DIE *Die, const DIGlobalVariable *G);
- void addSourceLine(DIE *Die, const DISubprogram *SP);
- void addSourceLine(DIE *Die, const DIType *Ty);
- void addSourceLine(DIE *Die, const DINameSpace *NS);
-
- /// addAddress - Add an address attribute to a die based on the location
- /// provided.
- void addAddress(DIE *Die, unsigned Attribute,
- const MachineLocation &Location);
-
- /// addRegisterAddress - Add register location entry in variable DIE.
- bool addRegisterAddress(DIE *Die, const MCSymbol *VS, const MachineOperand &MO);
-
- /// addConstantValue - Add constant value entry in variable DIE.
- bool addConstantValue(DIE *Die, const MCSymbol *VS, const MachineOperand &MO);
-
- /// addConstantFPValue - Add constant value entry in variable DIE.
- bool addConstantFPValue(DIE *Die, const MCSymbol *VS, const MachineOperand &MO);
-
- /// addComplexAddress - Start with the address based on the location provided,
- /// and generate the DWARF information necessary to find the actual variable
- /// (navigating the extra location information encoded in the type) based on
- /// the starting location. Add the DWARF information to the die.
- ///
- void addComplexAddress(DbgVariable *&DV, DIE *Die, unsigned Attribute,
- const MachineLocation &Location);
-
- // FIXME: Should be reformulated in terms of addComplexAddress.
- /// addBlockByrefAddress - Start with the address based on the location
- /// provided, and generate the DWARF information necessary to find the
- /// actual Block variable (navigating the Block struct) based on the
- /// starting location. Add the DWARF information to the die. Obsolete,
- /// please use addComplexAddress instead.
- ///
- void addBlockByrefAddress(DbgVariable *&DV, DIE *Die, unsigned Attribute,
- const MachineLocation &Location);
-
- /// addToContextOwner - Add Die into the list of its context owner's children.
- void addToContextOwner(DIE *Die, DIDescriptor Context);
-
- /// addType - Add a new type attribute to the specified entity.
- void addType(DIE *Entity, DIType Ty);
-
-
- /// getOrCreateNameSpace - Create a DIE for DINameSpace.
- DIE *getOrCreateNameSpace(DINameSpace NS);
-
- /// getOrCreateTypeDIE - Find existing DIE or create new DIE for the
- /// given DIType.
- DIE *getOrCreateTypeDIE(DIType Ty);
-
- void addPubTypes(DISubprogram SP);
-
- /// constructTypeDIE - Construct basic type die from DIBasicType.
- void constructTypeDIE(DIE &Buffer,
- DIBasicType BTy);
-
- /// constructTypeDIE - Construct derived type die from DIDerivedType.
- void constructTypeDIE(DIE &Buffer,
- DIDerivedType DTy);
-
- /// constructTypeDIE - Construct type DIE from DICompositeType.
- void constructTypeDIE(DIE &Buffer,
- DICompositeType CTy);
-
- /// constructSubrangeDIE - Construct subrange DIE from DISubrange.
- void constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy);
-
- /// constructArrayTypeDIE - Construct array type DIE from DICompositeType.
- void constructArrayTypeDIE(DIE &Buffer,
- DICompositeType *CTy);
-
- /// constructEnumTypeDIE - Construct enum type DIE from DIEnumerator.
- DIE *constructEnumTypeDIE(DIEnumerator ETy);
-
- /// createGlobalVariableDIE - Create new DIE using GV.
- DIE *createGlobalVariableDIE(const DIGlobalVariable &GV);
-
- /// createMemberDIE - Create new member DIE.
- DIE *createMemberDIE(const DIDerivedType &DT);
-
- /// createSubprogramDIE - Create new DIE using SP.
- DIE *createSubprogramDIE(const DISubprogram &SP, bool MakeDecl = false);
-
/// getOrCreateDbgScope - Create DbgScope for the scope.
DbgScope *getOrCreateDbgScope(const MDNode *Scope, const MDNode *InlinedAt);
///
void emitEndOfLineMatrix(unsigned SectionEnd);
- /// emitDebugLines - Emit source line information.
- ///
- void emitDebugLines();
-
- /// emitCommonDebugFrame - Emit common frame info into a debug frame section.
- ///
- void emitCommonDebugFrame();
-
- /// emitFunctionDebugFrame - Emit per function frame info into a debug frame
- /// section.
- void emitFunctionDebugFrame(const FunctionDebugFrameInfo &DebugFrameInfo);
-
/// emitDebugPubNames - Emit visible names into a debug pubnames section.
///
void emitDebugPubNames();
/// inlining instance.
void emitDebugInlineInfo();
- /// GetOrCreateSourceID - 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. This can update DirectoryNames and SourceFileNames
- /// maps as well.
- unsigned GetOrCreateSourceID(StringRef DirName, StringRef FileName);
-
/// constructCompileUnit - Create new CompileUnit for the given
/// metadata node with tag DW_TAG_compile_unit.
void constructCompileUnit(const MDNode *N);
/// construct SubprogramDIE - Construct subprogram DIE.
void constructSubprogramDIE(const MDNode *N);
- // FIXME: This should go away in favor of complex addresses.
- /// Find the type the programmer originally declared the variable to be
- /// and return that type. Obsolete, use GetComplexAddrType instead.
- ///
- DIType getBlockByrefType(DIType Ty, std::string Name);
-
/// recordSourceLine - Register a source line with debug info. Returns the
/// unique label that was emitted and which provides correspondence to
/// the source line list.
- MCSymbol *recordSourceLine(unsigned Line, unsigned Col, const MDNode *Scope);
-
- /// getSourceLineCount - Return the number of source lines in the debug
- /// info.
- unsigned getSourceLineCount() const {
- return Lines.size();
- }
+ void recordSourceLine(unsigned Line, unsigned Col, const MDNode *Scope,
+ unsigned Flags);
/// recordVariableFrameIndex - Record a variable's index.
void recordVariableFrameIndex(const DbgVariable *V, int Index);
/// is found. Update FI to hold value of the index.
bool findVariableFrameIndex(const DbgVariable *V, int *FI);
- /// findVariableLabel - Find MCSymbol for the variable.
- const MCSymbol *findVariableLabel(const DbgVariable *V);
-
/// findDbgScope - Find DbgScope for the debug loc attached with an
/// instruction.
DbgScope *findDbgScope(const MachineInstr *MI);
/// and collect DbgScopes. Return true, if atleast one scope was found.
bool extractScopeInformation();
+ /// addCurrentFnArgument - If Var is an current function argument that add
+ /// it in CurrentFnArguments list.
+ bool addCurrentFnArgument(const MachineFunction *MF,
+ DbgVariable *Var, DbgScope *Scope);
+
/// collectVariableInfo - Populate DbgScope entries with variables' info.
- void collectVariableInfo(const MachineFunction *);
+ void collectVariableInfo(const MachineFunction *,
+ SmallPtrSet<const MDNode *, 16> &ProcessedVars);
/// collectVariableInfoFromMMITable - Collect variable information from
/// side table maintained by MMI.
void collectVariableInfoFromMMITable(const MachineFunction * MF,
SmallPtrSet<const MDNode *, 16> &P);
+
+ /// requestLabelBeforeInsn - Ensure that a label will be emitted before MI.
+ void requestLabelBeforeInsn(const MachineInstr *MI) {
+ LabelsBeforeInsn.insert(std::make_pair(MI, (MCSymbol*)0));
+ }
+
+ /// getLabelBeforeInsn - Return Label preceding the instruction.
+ const MCSymbol *getLabelBeforeInsn(const MachineInstr *MI);
+
+ /// requestLabelAfterInsn - Ensure that a label will be emitted after MI.
+ void requestLabelAfterInsn(const MachineInstr *MI) {
+ LabelsAfterInsn.insert(std::make_pair(MI, (MCSymbol*)0));
+ }
+
+ /// getLabelAfterInsn - Return Label immediately following the instruction.
+ const MCSymbol *getLabelAfterInsn(const MachineInstr *MI);
+
public:
//===--------------------------------------------------------------------===//
// Main entry points.
///
void endFunction(const MachineFunction *MF);
- /// getLabelBeforeInsn - Return Label preceding the instruction.
- const MCSymbol *getLabelBeforeInsn(const MachineInstr *MI);
+ /// beginInstruction - Process beginning of an instruction.
+ void beginInstruction(const MachineInstr *MI);
- /// getLabelAfterInsn - Return Label immediately following the instruction.
- const MCSymbol *getLabelAfterInsn(const MachineInstr *MI);
+ /// endInstruction - Prcess end of an instruction.
+ void endInstruction(const MachineInstr *MI);
- /// beginScope - Process beginning of a scope.
- void beginScope(const MachineInstr *MI);
+ /// GetOrCreateSourceID - 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);
- /// endScope - Prcess end of a scope.
- void endScope(const MachineInstr *MI);
+ /// createSubprogramDIE - Create new DIE using SP.
+ DIE *createSubprogramDIE(DISubprogram SP);
};
} // End of namespace llvm
projects / oota-llvm.git / blobdiff