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Imported Upstream version 5.18.0.167

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Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a
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Xamarin Public Jenkins (auto-signing)
2018-10-20 08:25:10 +00:00
parent e19d552987
commit b084638f15
28489 changed files with 184 additions and 3866856 deletions
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120
external/llvm/lib/CodeGen/AsmPrinter/DwarfFile.h vendored
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//===- llvm/CodeGen/DwarfFile.h - Dwarf Debug Framework ---------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_CODEGEN_ASMPRINTER_DWARFFILE_H
#define LLVM_LIB_CODEGEN_ASMPRINTER_DWARFFILE_H
#include "DwarfStringPool.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/CodeGen/DIE.h"
#include "llvm/IR/Metadata.h"
#include "llvm/Support/Allocator.h"
#include <memory>
#include <utility>
namespace llvm {
class AsmPrinter;
class DbgVariable;
class DwarfCompileUnit;
class DwarfUnit;
class LexicalScope;
class MCSection;
class DwarfFile {
// Target of Dwarf emission, used for sizing of abbreviations.
AsmPrinter *Asm;
BumpPtrAllocator AbbrevAllocator;
// Used to uniquely define abbreviations.
DIEAbbrevSet Abbrevs;
// A pointer to all units in the section.
SmallVector<std::unique_ptr<DwarfCompileUnit>, 1> CUs;
DwarfStringPool StrPool;
// Collection of dbg variables of a scope.
DenseMap<LexicalScope *, SmallVector<DbgVariable *, 8>> ScopeVariables;
// Collection of abstract subprogram DIEs.
DenseMap<const MDNode *, DIE *> AbstractSPDies;
DenseMap<const MDNode *, std::unique_ptr<DbgVariable>> AbstractVariables;
/// Maps MDNodes for type system with the corresponding DIEs. These DIEs can
/// be shared across CUs, that is why we keep the map here instead
/// of in DwarfCompileUnit.
DenseMap<const MDNode *, DIE *> DITypeNodeToDieMap;
public:
DwarfFile(AsmPrinter *AP, StringRef Pref, BumpPtrAllocator &DA);
const SmallVectorImpl<std::unique_ptr<DwarfCompileUnit>> &getUnits() {
return CUs;
}
/// \brief Compute the size and offset of a DIE given an incoming Offset.
unsigned computeSizeAndOffset(DIE &Die, unsigned Offset);
/// \brief Compute the size and offset of all the DIEs.
void computeSizeAndOffsets();
/// \brief Compute the size and offset of all the DIEs in the given unit.
/// \returns The size of the root DIE.
unsigned computeSizeAndOffsetsForUnit(DwarfUnit *TheU);
/// \brief Add a unit to the list of CUs.
void addUnit(std::unique_ptr<DwarfCompileUnit> U);
/// \brief Emit all of the units to the section listed with the given
/// abbreviation section.
void emitUnits(bool UseOffsets);
/// \brief Emit the given unit to its section.
void emitUnit(DwarfUnit *U, bool UseOffsets);
/// \brief Emit a set of abbreviations to the specific section.
void emitAbbrevs(MCSection *);
/// \brief Emit all of the strings to the section given.
void emitStrings(MCSection *StrSection, MCSection *OffsetSection = nullptr);
/// \brief Returns the string pool.
DwarfStringPool &getStringPool() { return StrPool; }
/// \returns false if the variable was merged with a previous one.
bool addScopeVariable(LexicalScope *LS, DbgVariable *Var);
DenseMap<LexicalScope *, SmallVector<DbgVariable *, 8>> &getScopeVariables() {
return ScopeVariables;
}
DenseMap<const MDNode *, DIE *> &getAbstractSPDies() {
return AbstractSPDies;
}
DenseMap<const MDNode *, std::unique_ptr<DbgVariable>> &getAbstractVariables() {
return AbstractVariables;
}
void insertDIE(const MDNode *TypeMD, DIE *Die) {
DITypeNodeToDieMap.insert(std::make_pair(TypeMD, Die));
}
DIE *getDIE(const MDNode *TypeMD) {
return DITypeNodeToDieMap.lookup(TypeMD);
}
};
} // end namespace llvm
#endif // LLVM_LIB_CODEGEN_ASMPRINTER_DWARFFILE_H