diff options
Diffstat (limited to 'lib/CodeGen/AsmPrinter/DwarfDebug.h')
| -rw-r--r-- | lib/CodeGen/AsmPrinter/DwarfDebug.h | 135 |
1 files changed, 100 insertions, 35 deletions
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h index b964b23..0d6116f 100644 --- a/lib/CodeGen/AsmPrinter/DwarfDebug.h +++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h @@ -15,6 +15,7 @@ #define CODEGEN_ASMPRINTER_DWARFDEBUG_H__ #include "llvm/CodeGen/AsmPrinter.h" +#include "llvm/CodeGen/MachineLocation.h" #include "DIE.h" #include "llvm/ADT/DenseMap.h" #include "llvm/ADT/FoldingSet.h" @@ -30,7 +31,6 @@ class DbgConcreteScope; class DbgScope; class DbgVariable; class MachineFrameInfo; -class MachineLocation; class MachineModuleInfo; class MachineOperand; class MCAsmInfo; @@ -82,8 +82,8 @@ class DwarfDebug { // Attributes used to construct specific Dwarf sections. // - /// ModuleCU - All DIEs are inserted in ModuleCU. - CompileUnit *ModuleCU; + CompileUnit *FirstCU; + DenseMap <const MDNode *, CompileUnit *> CUMap; /// AbbreviationsSet - Used to uniquely define abbreviations. /// @@ -146,15 +146,15 @@ class DwarfDebug { /// DbgScopeMap - Tracks the scopes in the current function. Owns the /// contained DbgScope*s. /// - DenseMap<MDNode *, DbgScope *> DbgScopeMap; + DenseMap<const MDNode *, DbgScope *> DbgScopeMap; /// ConcreteScopes - Tracks the concrete scopees in the current function. /// These scopes are also included in DbgScopeMap. - DenseMap<MDNode *, DbgScope *> ConcreteScopes; + DenseMap<const MDNode *, DbgScope *> ConcreteScopes; /// AbstractScopes - Tracks the abstract scopes a module. These scopes are /// not included DbgScopeMap. AbstractScopes owns its DbgScope*s. - DenseMap<MDNode *, DbgScope *> AbstractScopes; + DenseMap<const MDNode *, DbgScope *> AbstractScopes; /// AbstractScopesList - Tracks abstract scopes constructed while processing /// a function. This list is cleared during endFunction(). @@ -162,13 +162,43 @@ class DwarfDebug { /// AbstractVariables - Collection on abstract variables. Owned by the /// DbgScopes in AbstractScopes. - DenseMap<MDNode *, DbgVariable *> AbstractVariables; - - /// DbgValueStartMap - Tracks starting scope of variable DIEs. - /// If the scope of an object begins sometime after the low pc value for the - /// scope most closely enclosing the object, the object entry may have a - /// DW_AT_start_scope attribute. - DenseMap<const MachineInstr *, DbgVariable *> DbgValueStartMap; + DenseMap<const MDNode *, DbgVariable *> AbstractVariables; + + /// DbgVariableToFrameIndexMap - Tracks frame index used to find + /// variable's value. + DenseMap<const DbgVariable *, int> DbgVariableToFrameIndexMap; + + /// DbgVariableToDbgInstMap - Maps DbgVariable to corresponding DBG_VALUE + /// 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; + + /// UseDotDebugLocEntry - DW_AT_location attributes for the DIEs in this set + /// idetifies corresponding .debug_loc entry offset. + SmallPtrSet<const DIE *, 4> UseDotDebugLocEntry; + + /// VarToAbstractVarMap - Maps DbgVariable with corresponding Abstract + /// DbgVariable, if any. + DenseMap<const DbgVariable *, const DbgVariable *> VarToAbstractVarMap; /// InliendSubprogramDIEs - Collection of subprgram DIEs that are marked /// (at the end of the module) as DW_AT_inline. @@ -177,7 +207,7 @@ class DwarfDebug { /// 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 *, MDNode *> ContainingTypeMap; + DenseMap<DIE *, const MDNode *> ContainingTypeMap; typedef SmallVector<DbgScope *, 2> ScopeVector; SmallPtrSet<const MachineInstr *, 8> InsnsBeginScopeSet; @@ -185,9 +215,9 @@ class DwarfDebug { /// InlineInfo - Keep track of inlined functions and their location. This /// information is used to populate debug_inlined section. - typedef std::pair<MCSymbol*, DIE *> InlineInfoLabels; - DenseMap<MDNode*, SmallVector<InlineInfoLabels, 4> > InlineInfo; - SmallVector<MDNode *, 4> InlinedSPNodes; + typedef std::pair<const MCSymbol *, DIE *> InlineInfoLabels; + DenseMap<const MDNode *, SmallVector<InlineInfoLabels, 4> > InlineInfo; + SmallVector<const MDNode *, 4> InlinedSPNodes; /// LabelsBeforeInsn - Maps instruction with label emitted before /// instruction. @@ -197,6 +227,13 @@ class DwarfDebug { /// 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; + + /// ProcessedArgs - Collection of arguments already processed. + SmallPtrSet<const MDNode *, 8> ProcessedArgs; + SmallVector<const MCSymbol *, 8> DebugRangeSymbols; /// Previous instruction's location information. This is used to determine @@ -219,8 +256,8 @@ class DwarfDebug { // section offsets and are created by EmitSectionLabels. MCSymbol *DwarfFrameSectionSym, *DwarfInfoSectionSym, *DwarfAbbrevSectionSym; MCSymbol *DwarfStrSectionSym, *TextSectionSym, *DwarfDebugRangeSectionSym; - - MCSymbol *FunctionBeginSym; + MCSymbol *DwarfDebugLocSectionSym; + MCSymbol *FunctionBeginSym, *FunctionEndSym; private: /// getSourceDirectoryAndFileIds - Return the directory and file ids that @@ -295,7 +332,7 @@ private: /// addSourceLine - Add location information to specified debug information /// entry. void addSourceLine(DIE *Die, const DIVariable *V); - void addSourceLine(DIE *Die, const DIGlobal *G); + 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); @@ -306,13 +343,13 @@ private: const MachineLocation &Location); /// addRegisterAddress - Add register location entry in variable DIE. - bool addRegisterAddress(DIE *Die, DbgVariable *DV, const MachineOperand &MO); + bool addRegisterAddress(DIE *Die, const MCSymbol *VS, const MachineOperand &MO); /// addConstantValue - Add constant value entry in variable DIE. - bool addConstantValue(DIE *Die, DbgVariable *DV, const MachineOperand &MO); + bool addConstantValue(DIE *Die, const MCSymbol *VS, const MachineOperand &MO); /// addConstantFPValue - Add constant value entry in variable DIE. - bool addConstantFPValue(DIE *Die, DbgVariable *DV, const MachineOperand &MO); + 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 @@ -380,21 +417,18 @@ private: DIE *createSubprogramDIE(const DISubprogram &SP, bool MakeDecl = false); /// getOrCreateDbgScope - Create DbgScope for the scope. - DbgScope *getOrCreateDbgScope(MDNode *Scope, MDNode *InlinedAt); + DbgScope *getOrCreateDbgScope(const MDNode *Scope, const MDNode *InlinedAt); - DbgScope *getOrCreateAbstractScope(MDNode *N); + DbgScope *getOrCreateAbstractScope(const MDNode *N); /// findAbstractVariable - Find abstract variable associated with Var. - DbgVariable *findAbstractVariable(DIVariable &Var, unsigned FrameIdx, - DebugLoc Loc); - DbgVariable *findAbstractVariable(DIVariable &Var, const MachineInstr *MI, - DebugLoc Loc); + DbgVariable *findAbstractVariable(DIVariable &Var, DebugLoc Loc); /// updateSubprogramScopeDIE - 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(MDNode *SPNode); + DIE *updateSubprogramScopeDIE(const MDNode *SPNode); /// constructLexicalScope - Construct new DW_TAG_lexical_block /// for this scope and attach DW_AT_low_pc/DW_AT_high_pc labels. @@ -506,11 +540,18 @@ private: /// maps as well. unsigned GetOrCreateSourceID(StringRef DirName, StringRef FileName); - void constructCompileUnit(MDNode *N); + /// constructCompileUnit - Create new CompileUnit for the given + /// metadata node with tag DW_TAG_compile_unit. + void constructCompileUnit(const MDNode *N); + + /// getCompielUnit - Get CompileUnit DIE. + CompileUnit *getCompileUnit(const MDNode *N) const; - void constructGlobalVariableDIE(MDNode *N); + /// constructGlobalVariableDIE - Construct global variable DIE. + void constructGlobalVariableDIE(const MDNode *N); - void constructSubprogramDIE(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 @@ -521,7 +562,7 @@ private: /// 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, MDNode *Scope); + MCSymbol *recordSourceLine(unsigned Line, unsigned Col, const MDNode *Scope); /// getSourceLineCount - Return the number of source lines in the debug /// info. @@ -529,6 +570,20 @@ private: return Lines.size(); } + /// recordVariableFrameIndex - Record a variable's index. + void recordVariableFrameIndex(const DbgVariable *V, int Index); + + /// findVariableFrameIndex - Return true if frame index for the variable + /// 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); + /// identifyScopeMarkers() - Indentify instructions that are marking /// beginning of or end of a scope. void identifyScopeMarkers(); @@ -538,8 +593,12 @@ private: bool extractScopeInformation(); /// collectVariableInfo - Populate DbgScope entries with variables' info. - void collectVariableInfo(); + void collectVariableInfo(const MachineFunction *); + /// collectVariableInfoFromMMITable - Collect variable information from + /// side table maintained by MMI. + void collectVariableInfoFromMMITable(const MachineFunction * MF, + SmallPtrSet<const MDNode *, 16> &P); public: //===--------------------------------------------------------------------===// // Main entry points. @@ -563,6 +622,12 @@ public: /// void endFunction(const MachineFunction *MF); + /// getLabelBeforeInsn - Return Label preceding the instruction. + const MCSymbol *getLabelBeforeInsn(const MachineInstr *MI); + + /// getLabelAfterInsn - Return Label immediately following the instruction. + const MCSymbol *getLabelAfterInsn(const MachineInstr *MI); + /// beginScope - Process beginning of a scope. void beginScope(const MachineInstr *MI); |
