llvm-6502/lib/CodeGen/AsmPrinter/DwarfFile.h
Duncan P. N. Exon Smith e56023a059 IR: Give 'DI' prefix to debug info metadata
Finish off PR23080 by renaming the debug info IR constructs from `MD*`
to `DI*`.  The last of the `DIDescriptor` classes were deleted in
r235356, and the last of the related typedefs removed in r235413, so
this has all baked for about a week.

Note: If you have out-of-tree code (like a frontend), I recommend that
you get everything compiling and tests passing with the *previous*
commit before updating to this one.  It'll be easier to keep track of
what code is using the `DIDescriptor` hierarchy and what you've already
updated, and I think you're extremely unlikely to insert bugs.  YMMV of
course.

Back to *this* commit: I did this using the rename-md-di-nodes.sh
upgrade script I've attached to PR23080 (both code and testcases) and
filtered through clang-format-diff.py.  I edited the tests for
test/Assembler/invalid-generic-debug-node-*.ll by hand since the columns
were off-by-three.  It should work on your out-of-tree testcases (and
code, if you've followed the advice in the previous paragraph).

Some of the tests are in badly named files now (e.g.,
test/Assembler/invalid-mdcompositetype-missing-tag.ll should be
'dicompositetype'); I'll come back and move the files in a follow-up
commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236120 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-29 16:38:44 +00:00

114 lines
3.3 KiB
C++

//===-- 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 "AddressPool.h"
#include "DwarfStringPool.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/FoldingSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Support/Allocator.h"
#include <memory>
#include <string>
#include <vector>
namespace llvm {
class AsmPrinter;
class DbgVariable;
class DwarfUnit;
class DIEAbbrev;
class MCSymbol;
class DIE;
class LexicalScope;
class StringRef;
class DwarfDebug;
class MCSection;
class DwarfFile {
// Target of Dwarf emission, used for sizing of abbreviations.
AsmPrinter *Asm;
// Used to uniquely define abbreviations.
FoldingSet<DIEAbbrev> AbbreviationsSet;
// A list of all the unique abbreviations in use.
std::vector<DIEAbbrev *> Abbreviations;
// A pointer to all units in the section.
SmallVector<std::unique_ptr<DwarfUnit>, 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;
/// 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);
~DwarfFile();
const SmallVectorImpl<std::unique_ptr<DwarfUnit>> &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 Define a unique number for the abbreviation.
void assignAbbrevNumber(DIEAbbrev &Abbrev);
/// \brief Add a unit to the list of CUs.
void addUnit(std::unique_ptr<DwarfUnit> U);
/// \brief Emit all of the units to the section listed with the given
/// abbreviation section.
void emitUnits(bool UseOffsets);
/// \brief Emit a set of abbreviations to the specific section.
void emitAbbrevs(const MCSection *);
/// \brief Emit all of the strings to the section given.
void emitStrings(const MCSection *StrSection,
const 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;
}
void insertDIE(const MDNode *TypeMD, DIE *Die) {
DITypeNodeToDieMap.insert(std::make_pair(TypeMD, Die));
}
DIE *getDIE(const MDNode *TypeMD) {
return DITypeNodeToDieMap.lookup(TypeMD);
}
};
}
#endif