forked from OSchip/llvm-project
121 lines
3.6 KiB
C++
121 lines
3.6 KiB
C++
//===- llvm/CodeGen/DwarfFile.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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#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFFILE_H
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#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFFILE_H
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#include "DwarfStringPool.h"
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/CodeGen/DIE.h"
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#include "llvm/IR/Metadata.h"
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#include "llvm/Support/Allocator.h"
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#include <memory>
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#include <utility>
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namespace llvm {
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class AsmPrinter;
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class DbgVariable;
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class DwarfCompileUnit;
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class DwarfUnit;
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class LexicalScope;
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class MCSection;
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class DwarfFile {
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// Target of Dwarf emission, used for sizing of abbreviations.
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AsmPrinter *Asm;
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BumpPtrAllocator AbbrevAllocator;
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// Used to uniquely define abbreviations.
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DIEAbbrevSet Abbrevs;
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// A pointer to all units in the section.
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SmallVector<std::unique_ptr<DwarfCompileUnit>, 1> CUs;
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DwarfStringPool StrPool;
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// Collection of dbg variables of a scope.
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DenseMap<LexicalScope *, SmallVector<DbgVariable *, 8>> ScopeVariables;
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// Collection of abstract subprogram DIEs.
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DenseMap<const MDNode *, DIE *> AbstractSPDies;
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DenseMap<const MDNode *, std::unique_ptr<DbgVariable>> AbstractVariables;
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/// Maps MDNodes for type system with the corresponding DIEs. These DIEs can
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/// be shared across CUs, that is why we keep the map here instead
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/// of in DwarfCompileUnit.
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DenseMap<const MDNode *, DIE *> DITypeNodeToDieMap;
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public:
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DwarfFile(AsmPrinter *AP, StringRef Pref, BumpPtrAllocator &DA);
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const SmallVectorImpl<std::unique_ptr<DwarfCompileUnit>> &getUnits() {
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return CUs;
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}
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/// \brief Compute the size and offset of a DIE given an incoming Offset.
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unsigned computeSizeAndOffset(DIE &Die, unsigned Offset);
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/// \brief Compute the size and offset of all the DIEs.
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void computeSizeAndOffsets();
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/// \brief Compute the size and offset of all the DIEs in the given unit.
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/// \returns The size of the root DIE.
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unsigned computeSizeAndOffsetsForUnit(DwarfUnit *TheU);
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/// \brief Add a unit to the list of CUs.
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void addUnit(std::unique_ptr<DwarfCompileUnit> U);
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/// \brief Emit all of the units to the section listed with the given
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/// abbreviation section.
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void emitUnits(bool UseOffsets);
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/// \brief Emit the given unit to its section.
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void emitUnit(DwarfUnit *U, bool UseOffsets);
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/// \brief Emit a set of abbreviations to the specific section.
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void emitAbbrevs(MCSection *);
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/// \brief Emit all of the strings to the section given.
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void emitStrings(MCSection *StrSection, MCSection *OffsetSection = nullptr);
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/// \brief Returns the string pool.
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DwarfStringPool &getStringPool() { return StrPool; }
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/// \returns false if the variable was merged with a previous one.
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bool addScopeVariable(LexicalScope *LS, DbgVariable *Var);
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DenseMap<LexicalScope *, SmallVector<DbgVariable *, 8>> &getScopeVariables() {
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return ScopeVariables;
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}
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DenseMap<const MDNode *, DIE *> &getAbstractSPDies() {
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return AbstractSPDies;
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}
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DenseMap<const MDNode *, std::unique_ptr<DbgVariable>> &getAbstractVariables() {
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return AbstractVariables;
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}
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void insertDIE(const MDNode *TypeMD, DIE *Die) {
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DITypeNodeToDieMap.insert(std::make_pair(TypeMD, Die));
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}
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DIE *getDIE(const MDNode *TypeMD) {
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return DITypeNodeToDieMap.lookup(TypeMD);
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}
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};
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} // end namespace llvm
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#endif // LLVM_LIB_CODEGEN_ASMPRINTER_DWARFFILE_H
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