Merge "Update prebuilt Clang to r353983." into p9.0HEADp9.0-backupp9.0

1 files changed, 204 insertions, 0 deletions

diff --git a/clang-r353983/include/clang/Driver/Job.h b/clang-r353983/include/clang/Driver/Job.h
new file mode 100644
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+++ b/clang-r353983/include/clang/Driver/Job.h
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+//===- Job.h - Commands to Execute ------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_DRIVER_JOB_H
+#define LLVM_CLANG_DRIVER_JOB_H
+
+#include "clang/Basic/LLVM.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/Optional.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/iterator.h"
+#include "llvm/Option/Option.h"
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+namespace clang {
+namespace driver {
+
+class Action;
+class InputInfo;
+class Tool;
+
+struct CrashReportInfo {
+  StringRef Filename;
+  StringRef VFSPath;
+
+  CrashReportInfo(StringRef Filename, StringRef VFSPath)
+      : Filename(Filename), VFSPath(VFSPath) {}
+};
+
+/// Command - An executable path/name and argument vector to
+/// execute.
+class Command {
+  /// Source - The action which caused the creation of this job.
+  const Action &Source;
+
+  /// Tool - The tool which caused the creation of this job.
+  const Tool &Creator;
+
+  /// The executable to run.
+  const char *Executable;
+
+  /// The list of program arguments (not including the implicit first
+  /// argument, which will be the executable).
+  llvm::opt::ArgStringList Arguments;
+
+  /// The list of program arguments which are inputs.
+  llvm::opt::ArgStringList InputFilenames;
+
+  /// Whether to print the input filenames when executing.
+  bool PrintInputFilenames = false;
+
+  /// Response file name, if this command is set to use one, or nullptr
+  /// otherwise
+  const char *ResponseFile = nullptr;
+
+  /// The input file list in case we need to emit a file list instead of a
+  /// proper response file
+  llvm::opt::ArgStringList InputFileList;
+
+  /// String storage if we need to create a new argument to specify a response
+  /// file
+  std::string ResponseFileFlag;
+
+  /// See Command::setEnvironment
+  std::vector<const char *> Environment;
+
+  /// When a response file is needed, we try to put most arguments in an
+  /// exclusive file, while others remains as regular command line arguments.
+  /// This functions fills a vector with the regular command line arguments,
+  /// argv, excluding the ones passed in a response file.
+  void buildArgvForResponseFile(llvm::SmallVectorImpl<const char *> &Out) const;
+
+  /// Encodes an array of C strings into a single string separated by whitespace.
+  /// This function will also put in quotes arguments that have whitespaces and
+  /// will escape the regular backslashes (used in Windows paths) and quotes.
+  /// The results are the contents of a response file, written into a raw_ostream.
+  void writeResponseFile(raw_ostream &OS) const;
+
+public:
+  Command(const Action &Source, const Tool &Creator, const char *Executable,
+          const llvm::opt::ArgStringList &Arguments,
+          ArrayRef<InputInfo> Inputs);
+  // FIXME: This really shouldn't be copyable, but is currently copied in some
+  // error handling in Driver::generateCompilationDiagnostics.
+  Command(const Command &) = default;
+  virtual ~Command() = default;
+
+  virtual void Print(llvm::raw_ostream &OS, const char *Terminator, bool Quote,
+                     CrashReportInfo *CrashInfo = nullptr) const;
+
+  virtual int Execute(ArrayRef<Optional<StringRef>> Redirects,
+                      std::string *ErrMsg, bool *ExecutionFailed) const;
+
+  /// getSource - Return the Action which caused the creation of this job.
+  const Action &getSource() const { return Source; }
+
+  /// getCreator - Return the Tool which caused the creation of this job.
+  const Tool &getCreator() const { return Creator; }
+
+  /// Set to pass arguments via a response file when launching the command
+  void setResponseFile(const char *FileName);
+
+  /// Set an input file list, necessary if we need to use a response file but
+  /// the tool being called only supports input files lists.
+  void setInputFileList(llvm::opt::ArgStringList List) {
+    InputFileList = std::move(List);
+  }
+
+  /// Sets the environment to be used by the new process.
+  /// \param NewEnvironment An array of environment variables.
+  /// \remark If the environment remains unset, then the environment
+  ///         from the parent process will be used.
+  void setEnvironment(llvm::ArrayRef<const char *> NewEnvironment);
+
+  const char *getExecutable() const { return Executable; }
+
+  const llvm::opt::ArgStringList &getArguments() const { return Arguments; }
+
+  /// Print a command argument, and optionally quote it.
+  static void printArg(llvm::raw_ostream &OS, StringRef Arg, bool Quote);
+
+  /// Set whether to print the input filenames when executing.
+  void setPrintInputFilenames(bool P) { PrintInputFilenames = P; }
+};
+
+/// Like Command, but with a fallback which is executed in case
+/// the primary command crashes.
+class FallbackCommand : public Command {
+public:
+  FallbackCommand(const Action &Source_, const Tool &Creator_,
+                  const char *Executable_,
+                  const llvm::opt::ArgStringList &Arguments_,
+                  ArrayRef<InputInfo> Inputs,
+                  std::unique_ptr<Command> Fallback_);
+
+  void Print(llvm::raw_ostream &OS, const char *Terminator, bool Quote,
+             CrashReportInfo *CrashInfo = nullptr) const override;
+
+  int Execute(ArrayRef<Optional<StringRef>> Redirects, std::string *ErrMsg,
+              bool *ExecutionFailed) const override;
+
+private:
+  std::unique_ptr<Command> Fallback;
+};
+
+/// Like Command, but always pretends that the wrapped command succeeded.
+class ForceSuccessCommand : public Command {
+public:
+  ForceSuccessCommand(const Action &Source_, const Tool &Creator_,
+                      const char *Executable_,
+                      const llvm::opt::ArgStringList &Arguments_,
+                      ArrayRef<InputInfo> Inputs);
+
+  void Print(llvm::raw_ostream &OS, const char *Terminator, bool Quote,
+             CrashReportInfo *CrashInfo = nullptr) const override;
+
+  int Execute(ArrayRef<Optional<StringRef>> Redirects, std::string *ErrMsg,
+              bool *ExecutionFailed) const override;
+};
+
+/// JobList - A sequence of jobs to perform.
+class JobList {
+public:
+  using list_type = SmallVector<std::unique_ptr<Command>, 4>;
+  using size_type = list_type::size_type;
+  using iterator = llvm::pointee_iterator<list_type::iterator>;
+  using const_iterator = llvm::pointee_iterator<list_type::const_iterator>;
+
+private:
+  list_type Jobs;
+
+public:
+  void Print(llvm::raw_ostream &OS, const char *Terminator,
+             bool Quote, CrashReportInfo *CrashInfo = nullptr) const;
+
+  /// Add a job to the list (taking ownership).
+  void addJob(std::unique_ptr<Command> J) { Jobs.push_back(std::move(J)); }
+
+  /// Clear the job list.
+  void clear();
+
+  const list_type &getJobs() const { return Jobs; }
+
+  bool empty() const { return Jobs.empty(); }
+  size_type size() const { return Jobs.size(); }
+  iterator begin() { return Jobs.begin(); }
+  const_iterator begin() const { return Jobs.begin(); }
+  iterator end() { return Jobs.end(); }
+  const_iterator end() const { return Jobs.end(); }
+};
+
+} // namespace driver
+} // namespace clang
+
+#endif // LLVM_CLANG_DRIVER_JOB_H