mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-30 21:29:28 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83356 91177308-0d34-0410-b5e6-96231b3b80d8
571 lines
20 KiB
C++
571 lines
20 KiB
C++
//===-- llvm/CodeGen/DwarfDebug.h - Dwarf Debug Framework ------*- C++ -*--===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains support for writing dwarf debug info into asm files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef CODEGEN_ASMPRINTER_DWARFDEBUG_H__
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#define CODEGEN_ASMPRINTER_DWARFDEBUG_H__
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#include "DIE.h"
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#include "DwarfPrinter.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/CodeGen/MachineLocation.h"
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#include "llvm/Analysis/DebugInfo.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/FoldingSet.h"
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#include "llvm/ADT/SmallSet.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/UniqueVector.h"
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#include <string>
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namespace llvm {
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class CompileUnit;
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class DbgVariable;
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class DbgScope;
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class DbgConcreteScope;
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class MachineFrameInfo;
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class MachineModuleInfo;
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class MCAsmInfo;
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class Timer;
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//===----------------------------------------------------------------------===//
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/// SrcLineInfo - This class is used to record source line correspondence.
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///
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class VISIBILITY_HIDDEN SrcLineInfo {
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unsigned Line; // Source line number.
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unsigned Column; // Source column.
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unsigned SourceID; // Source ID number.
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unsigned LabelID; // Label in code ID number.
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public:
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SrcLineInfo(unsigned L, unsigned C, unsigned S, unsigned I)
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: Line(L), Column(C), SourceID(S), LabelID(I) {}
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// Accessors
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unsigned getLine() const { return Line; }
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unsigned getColumn() const { return Column; }
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unsigned getSourceID() const { return SourceID; }
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unsigned getLabelID() const { return LabelID; }
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};
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class VISIBILITY_HIDDEN DwarfDebug : public Dwarf {
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//===--------------------------------------------------------------------===//
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// Attributes used to construct specific Dwarf sections.
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//
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/// CompileUnitMap - A map of global variables representing compile units to
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/// compile units.
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DenseMap<Value *, CompileUnit *> CompileUnitMap;
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/// CompileUnits - All the compile units in this module.
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///
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SmallVector<CompileUnit *, 8> CompileUnits;
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/// ModuleCU - All DIEs are inserted in ModuleCU.
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CompileUnit *ModuleCU;
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/// AbbreviationsSet - Used to uniquely define abbreviations.
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///
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FoldingSet<DIEAbbrev> AbbreviationsSet;
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/// Abbreviations - A list of all the unique abbreviations in use.
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///
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std::vector<DIEAbbrev *> Abbreviations;
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/// DirectoryIdMap - Directory name to directory id map.
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///
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StringMap<unsigned> DirectoryIdMap;
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/// DirectoryNames - A list of directory names.
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SmallVector<std::string, 8> DirectoryNames;
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/// SourceFileIdMap - Source file name to source file id map.
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///
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StringMap<unsigned> SourceFileIdMap;
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/// SourceFileNames - A list of source file names.
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SmallVector<std::string, 8> SourceFileNames;
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/// SourceIdMap - Source id map, i.e. pair of directory id and source file
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/// id mapped to a unique id.
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DenseMap<std::pair<unsigned, unsigned>, unsigned> SourceIdMap;
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/// SourceIds - Reverse map from source id to directory id + file id pair.
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///
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SmallVector<std::pair<unsigned, unsigned>, 8> SourceIds;
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/// Lines - List of of source line correspondence.
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std::vector<SrcLineInfo> Lines;
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/// ValuesSet - Used to uniquely define values.
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///
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FoldingSet<DIEValue> ValuesSet;
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/// Values - A list of all the unique values in use.
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///
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std::vector<DIEValue *> Values;
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/// StringPool - A UniqueVector of strings used by indirect references.
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///
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UniqueVector<std::string> StringPool;
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/// SectionMap - Provides a unique id per text section.
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///
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UniqueVector<const MCSection*> SectionMap;
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/// SectionSourceLines - Tracks line numbers per text section.
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///
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std::vector<std::vector<SrcLineInfo> > SectionSourceLines;
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/// didInitial - Flag to indicate if initial emission has been done.
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///
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bool didInitial;
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/// shouldEmit - Flag to indicate if debug information should be emitted.
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///
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bool shouldEmit;
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// FunctionDbgScope - Top level scope for the current function.
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//
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DbgScope *FunctionDbgScope;
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/// DbgScopeMap - Tracks the scopes in the current function.
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DenseMap<MDNode *, DbgScope *> DbgScopeMap;
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/// ScopedGVs - Tracks global variables that are not at file scope.
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/// For example void f() { static int b = 42; }
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SmallVector<WeakVH, 4> ScopedGVs;
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typedef DenseMap<const MachineInstr *, SmallVector<DbgScope *, 2> >
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InsnToDbgScopeMapTy;
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/// DbgScopeBeginMap - Maps instruction with a list DbgScopes it starts.
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InsnToDbgScopeMapTy DbgScopeBeginMap;
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/// DbgScopeEndMap - Maps instruction with a list DbgScopes it ends.
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InsnToDbgScopeMapTy DbgScopeEndMap;
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/// DbgAbstractScopeMap - Tracks abstract instance scopes in the current
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/// function.
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DenseMap<MDNode *, DbgScope *> DbgAbstractScopeMap;
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/// DbgConcreteScopeMap - Tracks concrete instance scopes in the current
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/// function.
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DenseMap<MDNode *,
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SmallVector<DbgScope *, 8> > DbgConcreteScopeMap;
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/// InlineInfo - Keep track of inlined functions and their location. This
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/// information is used to populate debug_inlined section.
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DenseMap<MDNode *, SmallVector<unsigned, 4> > InlineInfo;
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/// AbstractInstanceRootMap - Map of abstract instance roots of inlined
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/// functions. These are subroutine entries that contain a DW_AT_inline
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/// attribute.
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DenseMap<const MDNode *, DbgScope *> AbstractInstanceRootMap;
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/// AbstractInstanceRootList - List of abstract instance roots of inlined
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/// functions. These are subroutine entries that contain a DW_AT_inline
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/// attribute.
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SmallVector<DbgScope *, 32> AbstractInstanceRootList;
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/// LexicalScopeStack - A stack of lexical scopes. The top one is the current
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/// scope.
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SmallVector<DbgScope *, 16> LexicalScopeStack;
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/// CompileUnitOffsets - A vector of the offsets of the compile units. This is
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/// used when calculating the "origin" of a concrete instance of an inlined
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/// function.
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DenseMap<CompileUnit *, unsigned> CompileUnitOffsets;
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/// DebugTimer - Timer for the Dwarf debug writer.
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Timer *DebugTimer;
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struct FunctionDebugFrameInfo {
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unsigned Number;
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std::vector<MachineMove> Moves;
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FunctionDebugFrameInfo(unsigned Num, const std::vector<MachineMove> &M)
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: Number(Num), Moves(M) {}
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};
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std::vector<FunctionDebugFrameInfo> DebugFrames;
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/// getSourceDirectoryAndFileIds - Return the directory and file ids that
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/// maps to the source id. Source id starts at 1.
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std::pair<unsigned, unsigned>
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getSourceDirectoryAndFileIds(unsigned SId) const {
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return SourceIds[SId-1];
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}
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/// getNumSourceDirectories - Return the number of source directories in the
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/// debug info.
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unsigned getNumSourceDirectories() const {
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return DirectoryNames.size();
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}
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/// getSourceDirectoryName - Return the name of the directory corresponding
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/// to the id.
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const std::string &getSourceDirectoryName(unsigned Id) const {
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return DirectoryNames[Id - 1];
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}
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/// getSourceFileName - Return the name of the source file corresponding
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/// to the id.
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const std::string &getSourceFileName(unsigned Id) const {
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return SourceFileNames[Id - 1];
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}
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/// getNumSourceIds - Return the number of unique source ids.
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unsigned getNumSourceIds() const {
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return SourceIds.size();
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}
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/// AssignAbbrevNumber - Define a unique number for the abbreviation.
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///
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void AssignAbbrevNumber(DIEAbbrev &Abbrev);
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/// CreateDIEEntry - Creates a new DIEEntry to be a proxy for a debug
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/// information entry.
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DIEEntry *CreateDIEEntry(DIE *Entry = NULL);
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/// SetDIEEntry - Set a DIEEntry once the debug information entry is defined.
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///
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void SetDIEEntry(DIEEntry *Value, DIE *Entry);
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/// AddUInt - Add an unsigned integer attribute data and value.
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///
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void AddUInt(DIE *Die, unsigned Attribute, unsigned Form, uint64_t Integer);
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/// AddSInt - Add an signed integer attribute data and value.
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///
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void AddSInt(DIE *Die, unsigned Attribute, unsigned Form, int64_t Integer);
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/// AddString - Add a string attribute data and value.
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///
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void AddString(DIE *Die, unsigned Attribute, unsigned Form,
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const std::string &String);
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/// AddLabel - Add a Dwarf label attribute data and value.
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///
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void AddLabel(DIE *Die, unsigned Attribute, unsigned Form,
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const DWLabel &Label);
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/// AddObjectLabel - Add an non-Dwarf label attribute data and value.
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///
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void AddObjectLabel(DIE *Die, unsigned Attribute, unsigned Form,
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const std::string &Label);
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/// AddSectionOffset - Add a section offset label attribute data and value.
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///
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void AddSectionOffset(DIE *Die, unsigned Attribute, unsigned Form,
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const DWLabel &Label, const DWLabel &Section,
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bool isEH = false, bool useSet = true);
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/// AddDelta - Add a label delta attribute data and value.
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///
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void AddDelta(DIE *Die, unsigned Attribute, unsigned Form,
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const DWLabel &Hi, const DWLabel &Lo);
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/// AddDIEEntry - Add a DIE attribute data and value.
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///
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void AddDIEEntry(DIE *Die, unsigned Attribute, unsigned Form, DIE *Entry) {
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Die->AddValue(Attribute, Form, CreateDIEEntry(Entry));
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}
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/// AddBlock - Add block data.
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///
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void AddBlock(DIE *Die, unsigned Attribute, unsigned Form, DIEBlock *Block);
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/// AddSourceLine - Add location information to specified debug information
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/// entry.
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void AddSourceLine(DIE *Die, const DIVariable *V);
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void AddSourceLine(DIE *Die, const DIGlobal *G);
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void AddSourceLine(DIE *Die, const DISubprogram *SP);
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void AddSourceLine(DIE *Die, const DIType *Ty);
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/// AddAddress - Add an address attribute to a die based on the location
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/// provided.
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void AddAddress(DIE *Die, unsigned Attribute,
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const MachineLocation &Location);
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/// AddComplexAddress - Start with the address based on the location provided,
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/// and generate the DWARF information necessary to find the actual variable
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/// (navigating the extra location information encoded in the type) based on
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/// the starting location. Add the DWARF information to the die.
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///
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void AddComplexAddress(DbgVariable *&DV, DIE *Die, unsigned Attribute,
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const MachineLocation &Location);
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// FIXME: Should be reformulated in terms of AddComplexAddress.
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/// AddBlockByrefAddress - Start with the address based on the location
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/// provided, and generate the DWARF information necessary to find the
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/// actual Block variable (navigating the Block struct) based on the
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/// starting location. Add the DWARF information to the die. Obsolete,
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/// please use AddComplexAddress instead.
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///
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void AddBlockByrefAddress(DbgVariable *&DV, DIE *Die, unsigned Attribute,
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const MachineLocation &Location);
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/// AddType - Add a new type attribute to the specified entity.
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void AddType(CompileUnit *DW_Unit, DIE *Entity, DIType Ty);
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/// ConstructTypeDIE - Construct basic type die from DIBasicType.
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void ConstructTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
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DIBasicType BTy);
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/// ConstructTypeDIE - Construct derived type die from DIDerivedType.
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void ConstructTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
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DIDerivedType DTy);
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/// ConstructTypeDIE - Construct type DIE from DICompositeType.
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void ConstructTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
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DICompositeType CTy);
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/// ConstructSubrangeDIE - Construct subrange DIE from DISubrange.
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void ConstructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy);
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/// ConstructArrayTypeDIE - Construct array type DIE from DICompositeType.
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void ConstructArrayTypeDIE(CompileUnit *DW_Unit, DIE &Buffer,
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DICompositeType *CTy);
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/// ConstructEnumTypeDIE - Construct enum type DIE from DIEnumerator.
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DIE *ConstructEnumTypeDIE(CompileUnit *DW_Unit, DIEnumerator *ETy);
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/// CreateGlobalVariableDIE - Create new DIE using GV.
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DIE *CreateGlobalVariableDIE(CompileUnit *DW_Unit,
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const DIGlobalVariable &GV);
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/// CreateMemberDIE - Create new member DIE.
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DIE *CreateMemberDIE(CompileUnit *DW_Unit, const DIDerivedType &DT);
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/// CreateSubprogramDIE - Create new DIE using SP.
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DIE *CreateSubprogramDIE(CompileUnit *DW_Unit,
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const DISubprogram &SP,
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bool IsConstructor = false,
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bool IsInlined = false);
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/// FindCompileUnit - Get the compile unit for the given descriptor.
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///
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CompileUnit &FindCompileUnit(DICompileUnit Unit) const;
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/// CreateDbgScopeVariable - Create a new scope variable.
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///
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DIE *CreateDbgScopeVariable(DbgVariable *DV, CompileUnit *Unit);
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/// getDbgScope - Returns the scope associated with the given descriptor.
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///
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DbgScope *getOrCreateScope(MDNode *N);
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DbgScope *getDbgScope(MDNode *N, const MachineInstr *MI);
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/// ConstructDbgScope - Construct the components of a scope.
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///
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void ConstructDbgScope(DbgScope *ParentScope,
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unsigned ParentStartID, unsigned ParentEndID,
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DIE *ParentDie, CompileUnit *Unit);
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/// ConstructFunctionDbgScope - Construct the scope for the subprogram.
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///
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void ConstructFunctionDbgScope(DbgScope *RootScope,
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bool AbstractScope = false);
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/// ConstructDefaultDbgScope - Construct a default scope for the subprogram.
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///
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void ConstructDefaultDbgScope(MachineFunction *MF);
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/// EmitInitial - Emit initial Dwarf declarations. This is necessary for cc
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/// tools to recognize the object file contains Dwarf information.
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void EmitInitial();
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/// EmitDIE - Recusively Emits a debug information entry.
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///
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void EmitDIE(DIE *Die);
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/// SizeAndOffsetDie - Compute the size and offset of a DIE.
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///
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unsigned SizeAndOffsetDie(DIE *Die, unsigned Offset, bool Last);
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/// SizeAndOffsets - Compute the size and offset of all the DIEs.
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///
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void SizeAndOffsets();
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/// EmitDebugInfo / EmitDebugInfoPerCU - Emit the debug info section.
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///
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void EmitDebugInfoPerCU(CompileUnit *Unit);
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void EmitDebugInfo();
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/// EmitAbbreviations - Emit the abbreviation section.
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///
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void EmitAbbreviations() const;
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/// EmitEndOfLineMatrix - Emit the last address of the section and the end of
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/// the line matrix.
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///
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void EmitEndOfLineMatrix(unsigned SectionEnd);
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/// EmitDebugLines - Emit source line information.
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///
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void EmitDebugLines();
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/// EmitCommonDebugFrame - Emit common frame info into a debug frame section.
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///
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void EmitCommonDebugFrame();
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/// EmitFunctionDebugFrame - Emit per function frame info into a debug frame
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/// section.
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void EmitFunctionDebugFrame(const FunctionDebugFrameInfo &DebugFrameInfo);
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void EmitDebugPubNamesPerCU(CompileUnit *Unit);
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/// EmitDebugPubNames - Emit visible names into a debug pubnames section.
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///
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void EmitDebugPubNames();
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/// EmitDebugStr - Emit visible names into a debug str section.
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///
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void EmitDebugStr();
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/// EmitDebugLoc - Emit visible names into a debug loc section.
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///
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void EmitDebugLoc();
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/// EmitDebugARanges - Emit visible names into a debug aranges section.
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///
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void EmitDebugARanges();
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/// EmitDebugRanges - Emit visible names into a debug ranges section.
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///
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void EmitDebugRanges();
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/// EmitDebugMacInfo - Emit visible names into a debug macinfo section.
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///
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void EmitDebugMacInfo();
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/// EmitDebugInlineInfo - Emit inline info using following format.
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/// Section Header:
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/// 1. length of section
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/// 2. Dwarf version number
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/// 3. address size.
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///
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/// Entries (one "entry" for each function that was inlined):
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///
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/// 1. offset into __debug_str section for MIPS linkage name, if exists;
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/// otherwise offset into __debug_str for regular function name.
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/// 2. offset into __debug_str section for regular function name.
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/// 3. an unsigned LEB128 number indicating the number of distinct inlining
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/// instances for the function.
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///
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/// The rest of the entry consists of a {die_offset, low_pc} pair for each
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/// inlined instance; the die_offset points to the inlined_subroutine die in
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/// the __debug_info section, and the low_pc is the starting address for the
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/// inlining instance.
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void EmitDebugInlineInfo();
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/// GetOrCreateSourceID - Look up the source id with the given directory and
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/// source file names. If none currently exists, create a new id and insert it
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/// in the SourceIds map. This can update DirectoryNames and SourceFileNames maps
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/// as well.
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unsigned GetOrCreateSourceID(const char *DirName,
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const char *FileName);
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void ConstructCompileUnit(MDNode *N);
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void ConstructGlobalVariableDIE(MDNode *N);
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void ConstructSubprogram(MDNode *N);
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// FIXME: This should go away in favor of complex addresses.
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/// Find the type the programmer originally declared the variable to be
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/// and return that type. Obsolete, use GetComplexAddrType instead.
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///
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DIType GetBlockByrefType(DIType Ty, std::string Name);
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public:
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//===--------------------------------------------------------------------===//
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// Main entry points.
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//
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DwarfDebug(raw_ostream &OS, AsmPrinter *A, const MCAsmInfo *T);
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virtual ~DwarfDebug();
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/// ShouldEmitDwarfDebug - Returns true if Dwarf debugging declarations should
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/// be emitted.
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bool ShouldEmitDwarfDebug() const { return shouldEmit; }
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/// BeginModule - Emit all Dwarf sections that should come prior to the
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/// content.
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void BeginModule(Module *M, MachineModuleInfo *MMI);
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/// EndModule - Emit all Dwarf sections that should come after the content.
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///
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void EndModule();
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|
|
|
/// BeginFunction - Gather pre-function debug information. Assumes being
|
|
/// emitted immediately after the function entry point.
|
|
void BeginFunction(MachineFunction *MF);
|
|
|
|
/// EndFunction - Gather and emit post-function debug information.
|
|
///
|
|
void EndFunction(MachineFunction *MF);
|
|
|
|
/// RecordSourceLine - Records location information and associates it with a
|
|
/// label. Returns a unique label ID used to generate a label and provide
|
|
/// correspondence to the source line list.
|
|
unsigned RecordSourceLine(Value *V, unsigned Line, unsigned Col);
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|
|
|
/// RecordSourceLine - Records location information and associates it with a
|
|
/// label. Returns a unique label ID used to generate a label and provide
|
|
/// correspondence to the source line list.
|
|
unsigned RecordSourceLine(unsigned Line, unsigned Col, MDNode *Scope);
|
|
|
|
/// getRecordSourceLineCount - Return the number of source lines in the debug
|
|
/// info.
|
|
unsigned getRecordSourceLineCount() const {
|
|
return Lines.size();
|
|
}
|
|
|
|
/// getOrCreateSourceID - Public version of GetOrCreateSourceID. This can be
|
|
/// timed. 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(const std::string &DirName,
|
|
const std::string &FileName);
|
|
|
|
/// RecordRegionStart - Indicate the start of a region.
|
|
unsigned RecordRegionStart(MDNode *N);
|
|
|
|
/// RecordRegionEnd - Indicate the end of a region.
|
|
unsigned RecordRegionEnd(MDNode *N);
|
|
|
|
/// RecordVariable - Indicate the declaration of a local variable.
|
|
void RecordVariable(MDNode *N, unsigned FrameIndex);
|
|
|
|
//// RecordInlinedFnStart - Indicate the start of inlined subroutine.
|
|
unsigned RecordInlinedFnStart(DISubprogram &SP, DICompileUnit CU,
|
|
unsigned Line, unsigned Col);
|
|
|
|
/// RecordInlinedFnEnd - Indicate the end of inlined subroutine.
|
|
unsigned RecordInlinedFnEnd(DISubprogram &SP);
|
|
|
|
/// ExtractScopeInformation - Scan machine instructions in this function
|
|
/// and collect DbgScopes. Return true, if atleast one scope was found.
|
|
bool ExtractScopeInformation(MachineFunction *MF);
|
|
|
|
/// CollectVariableInfo - Populate DbgScope entries with variables' info.
|
|
void CollectVariableInfo();
|
|
|
|
};
|
|
|
|
} // End of namespace llvm
|
|
|
|
#endif
|