Revert r200340, "Add line table debug info to COFF files when using a win32 triple."

It was incompatible with --target=i686-win32. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200375 91177308-0d34-0410-b5e6-96231b3b80d8
2026-04-26 12:20:42 +00:00 · 2014-01-29 06:05:38 +00:00
parent 83780350c4
commit 52de969206
13 changed files with 32 additions and 1530 deletions
@@ -1,144 +0,0 @@
-//===-- llvm/lib/CodeGen/AsmPrinter/WinCodeViewLineTables.h ----*- C++ -*--===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file contains support for writing line tables info into COFF files.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef CODEGEN_ASMPRINTER_WINCODEVIEWLINETABLES_H__
-#define CODEGEN_ASMPRINTER_WINCODEVIEWLINETABLES_H__
-
-#include "AsmPrinterHandler.h"
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/DebugInfo.h"
-#include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineModuleInfo.h"
-#include "llvm/CodeGen/LexicalScopes.h"
-#include "llvm/MC/MCStreamer.h"
-#include "llvm/Support/DebugLoc.h"
-#include "llvm/Target/TargetLoweringObjectFile.h"
-
-namespace llvm {
-/// \brief Collects and handles line tables information in a CodeView format.
-class WinCodeViewLineTables : public AsmPrinterHandler {
-  AsmPrinter *Asm;
-  DebugLoc PrevInstLoc;
-  LexicalScopes LScopes;
-
-  // For each function, store a vector of labels to its instructions, as well as
-  // to the end of the function.
-  struct FunctionInfo {
-    SmallVector<MCSymbol *, 10> Instrs;
-    MCSymbol *End;
-  } *CurFn;
-
-  typedef DenseMap<const Function *, FunctionInfo> FnDebugInfoTy;
-  FnDebugInfoTy FnDebugInfo;
-  // Store the functions we've visited in a vector so we can maintain a stable
-  // order while emitting subsections.
-  SmallVector<const Function *, 10> VisitedFunctions;
-
-  // InstrInfoTy - Holds the Filename:LineNumber information for every
-  // instruction with a unique debug location.
-  struct InstrInfoTy {
-    StringRef Filename;
-    unsigned LineNumber;
-
-    InstrInfoTy() : LineNumber(0) {}
-
-    InstrInfoTy(StringRef Filename, unsigned LineNumber)
-        : Filename(Filename), LineNumber(LineNumber) {}
-  };
-  DenseMap<MCSymbol *, InstrInfoTy> InstrInfo;
-
-  // FileNameRegistry - Manages filenames observed while generating debug info
-  // by filtering out duplicates and bookkeeping the offsets in the string
-  // table to be generated.
-  struct FileNameRegistryTy {
-    SmallVector<StringRef, 10> Filenames;
-    struct PerFileInfo {
-      size_t FilenameID, StartOffset;
-    };
-    StringMap<PerFileInfo> Infos;
-
-    // The offset in the string table where we'll write the next unique
-    // filename.
-    size_t LastOffset;
-
-    FileNameRegistryTy() {
-      clear();
-    }
-
-    // Add Filename to the registry, if it was not observed before.
-    void add(StringRef Filename) {
-      if (Infos.count(Filename))
-        return;
-      size_t OldSize = Infos.size();
-      Infos[Filename].FilenameID = OldSize;
-      Infos[Filename].StartOffset = LastOffset;
-      LastOffset += Filename.size() + 1;
-      Filenames.push_back(Filename);
-    }
-
-    void clear() {
-      LastOffset = 1;
-      Infos.clear();
-      Filenames.clear();
-    }
-  } FileNameRegistry;
-
-  typedef std::map<std::pair<StringRef, StringRef>, char *>
-      DirAndFilenameToFilepathMapTy;
-  DirAndFilenameToFilepathMapTy DirAndFilenameToFilepathMap;
-  StringRef getFullFilepath(const MDNode *S);
-
-  void maybeRecordLocation(DebugLoc DL, const MachineFunction *MF);
-
-  void clear() {
-    assert(CurFn == 0);
-    FileNameRegistry.clear();
-    InstrInfo.clear();
-  }
-
-  void emitDebugInfoForFunction(const Function *GV);
-
-public:
-  WinCodeViewLineTables(AsmPrinter *Asm);
-
-  ~WinCodeViewLineTables() {
-    for (DirAndFilenameToFilepathMapTy::iterator
-             I = DirAndFilenameToFilepathMap.begin(),
-             E = DirAndFilenameToFilepathMap.end();
-         I != E; ++I)
-      free(I->second);
-  }
-
-  virtual void setSymbolSize(const llvm::MCSymbol *, uint64_t) {}
-
-  /// \brief Emit the COFF section that holds the line table information.
-  virtual void endModule();
-
-  /// \brief Gather pre-function debug information.
-  virtual void beginFunction(const MachineFunction *MF);
-
-  /// \brief Gather post-function debug information.
-  virtual void endFunction(const MachineFunction *);
-
-  /// \brief Process beginning of an instruction.
-  virtual void beginInstruction(const MachineInstr *MI);
-
-  /// \brief Process end of an instruction.
-  virtual void endInstruction() {}
-};
-} // End of namespace llvm
-
-#endif