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authorShuxin Yang <shuxin.llvm@gmail.com>2013-08-12 21:07:31 +0000
committerShuxin Yang <shuxin.llvm@gmail.com>2013-08-12 21:07:31 +0000
commitcfaa636a1d31f2db71df627e4882e9d5c066c419 (patch)
tree7ce70ace4c7c6fe692b4eb1155d0509181db4ede /tools/lto/LTOPartition.h
parentb0a50ade8b59816324783733e9ac8eb2aa7e73d6 (diff)
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Revert r188188 and r188200.
In order to appease people (in Apple) who accuse me for committing "huge change" (?) without proper review. Thank Eric for fixing a compile-warning. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188204 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/lto/LTOPartition.h')
-rw-r--r--tools/lto/LTOPartition.h187
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diff --git a/tools/lto/LTOPartition.h b/tools/lto/LTOPartition.h
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--- a/tools/lto/LTOPartition.h
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-//===-------- LTOPartition.h - Partition related classes and functions ---===//
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file declare the partition related classes and functions. A partition
-// is a portion of the merged module. In case partition is disabled, the entire
-// merged module is considered as a degenerated partition.
-//
-// The classes declared in this file are:
-// o. IPOPartition : to depicit a partition
-// o. IPOFile: It is a "container" collecting miscellaneous information about
-// an intermeidate file, including file name, path, last-err-message etc.
-// o. IPOPartMgr, IPOFileMgr: as the name suggests, it's the manager of
-// IPOPartitions and IPOFiles, respectively.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LTO_PARTITION_H
-#define LTO_PARTITION_H
-
-#include "llvm/Pass.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/Support/system_error.h"
-
-using namespace llvm;
-
-namespace lto {
- /// \brief To collect miscellaneous information about an intermdiate file.
- ///
- /// These informration include file name, path, last error message etc.
- ///
- class IPOFile {
- public:
- const std::string &getName() { return Fname; }
- const std::string &getPath() { return Fpath; }
-
- error_code &getLastErrCode() { return LastErr; }
- std::string &getLastErrStr() { return LastErrStr; }
-
- bool errOccur() const {
- return LastErr != error_code::success() || !LastErrStr.empty();
- }
-
- // To keep this file after compilation finish.
- void setKeep() { Keep = true; }
- bool isKept() const { return Keep; }
-
- private:
- friend class IPOFileMgr;
- IPOFile(const char* DirName, const char *BaseName, bool Keep=false);
- ~IPOFile();
-
- private:
- std::string Fname;
- std::string Fpath;
- error_code LastErr;
- std::string LastErrStr;
- bool Keep;
- };
-
- /// \brief To manage IPOFiles, create and remove work-directory.
- ///
- class IPOFileMgr {
- public:
- typedef SmallVector<const char *, 4> FileNameVect;
-
- IPOFileMgr();
-
- // NOTE: Do not delete intermeidate in the destructor as we never know
- // if these files out-last the class or not. It is safe to let linker's
- // clean-up hook to take care these files.
- ~IPOFileMgr() {};
-
- void setWorkDir(const char* WD) {
- assert(!WorkDirCreated /* Too late to change mind */ &&
- WorkDir.empty() /* don't change back and forth */ &&
- "Cannot change work dir");
- WorkDir = WD;
- }
- void setKeepWorkDir(bool Keep) { KeepWorkDir = Keep; }
- bool IsToKeepWorkDir() const { return KeepWorkDir; }
- const std::string &getWorkDir() { return WorkDir; }
-
- bool createWorkDir(std::string &ErrorInfo);
-
- IPOFile *createIRFile(const char *Name);
- IPOFile *createObjFile(const char *Name);
- IPOFile *createMakefile(const char *Name);
-
- typedef std::vector<IPOFile *> FileVect;
- FileVect &getIRFiles() { return IRFiles; }
- FileVect &getObjFiles() { return ObjFiles; }
-
- // Get all files/dirs that need to removed after the LTO complete.
- void getFilesNeedToRemove(FileNameVect &ToRm) {
- ToRm.clear();
- if (!IsToKeepWorkDir() && WorkDirCreated)
- ToRm.push_back(WorkDir.c_str());
- }
-
- // Remove all files/dirs returned from getFilesNeedToRemove().
- void removeAllUnneededFiles();
-
- private:
- IPOFile *CreateFile(const char *Name) {
- return new IPOFile(WorkDir.c_str(), Name);
- }
-
- private:
- FileVect IRFiles;
- FileVect ObjFiles;
- FileVect OtherFiles;
- std::string WorkDir;
- bool KeepWorkDir;
- bool WorkDirCreated;
- };
-
- /// \brief Describe a partition of the merged module.
- ///
- class IPOPartition {
- public:
- llvm::Module *getModule() const { return Mod; }
- IPOFile &getIRFile() const;
- IPOFile &getObjFile() const;
- const std::string &getIRFilePath() const { return getIRFile().getPath(); }
- const std::string &getObjFilePath() const { return getObjFile().getPath(); }
-
- // If the bitcode reside in memory or disk
- bool isInMemory() const { return Mod != 0; }
-
- // Load/store bitcode from/to disk file.
- bool saveBitCode();
- bool loadBitCode();
-
- private:
- friend class IPOPartMgr;
- IPOPartition(llvm::Module *M, const char *FileNameWoExt, IPOFileMgr &FM);
-
- // The module associated with this partition
- Module *Mod;
- LLVMContext *Ctx;
-
- // The bitcode file and its corresponding object file associated with
- // this partition. The names of these two files are different only in
- // extension; the "FileNameWoExt" record their (common) name without
- // extension.
- //
- mutable IPOFile *IRFile;
- mutable IPOFile *ObjFile;
- std::string FileNameWoExt;
-
- IPOFileMgr &FileMgr;
- };
-
- /// \brief To manage IPOPartitions
- ///
- class IPOPartMgr {
- public:
- IPOPartMgr(IPOFileMgr &IFM) : FileMgr(IFM), NextPartId(1) {}
-
- typedef std::vector<IPOPartition *> IPOPartsTy;
- typedef IPOPartsTy::iterator iterator;
- typedef IPOPartsTy::const_iterator const_iterator;
-
- iterator begin() { return IPOParts.begin(); }
- iterator end() { return IPOParts.end(); }
- const_iterator begin() const { return IPOParts.begin(); }
- const_iterator end() const { return IPOParts.end(); }
-
- IPOPartition *createIPOPart(Module *);
- IPOPartition *getSinglePartition() {
- assert(IPOParts.size() == 1 && "Has multiple partition");
- return IPOParts[0];
- }
-
- private:
- IPOPartsTy IPOParts;
- IPOFileMgr &FileMgr;
- int NextPartId;
- };
-
-}
-
-#endif //LTO_PARTITION_H