LLVM  12.0.0git
ParallelCG.h
Go to the documentation of this file.
1 //===-- llvm/CodeGen/ParallelCG.h - Parallel code generation ----*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This header declares functions that can be used for parallel code generation.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_CODEGEN_PARALLELCG_H
14 #define LLVM_CODEGEN_PARALLELCG_H
15 
16 #include "llvm/Support/CodeGen.h"
17 #include <functional>
18 #include <memory>
19 
20 namespace llvm {
21 
22 template <typename T> class ArrayRef;
23 class Module;
24 class TargetMachine;
25 class raw_pwrite_stream;
26 
27 /// Split M into OSs.size() partitions, and generate code for each. Takes a
28 /// factory function for the TargetMachine TMFactory. Writes OSs.size() output
29 /// files to the output streams in OSs. The resulting output files if linked
30 /// together are intended to be equivalent to the single output file that would
31 /// have been code generated from M.
32 ///
33 /// Writes bitcode for individual partitions into output streams in BCOSs, if
34 /// BCOSs is not empty.
35 ///
36 /// \returns M if OSs.size() == 1, otherwise returns std::unique_ptr<Module>().
37 std::unique_ptr<Module>
38 splitCodeGen(std::unique_ptr<Module> M, ArrayRef<raw_pwrite_stream *> OSs,
39  ArrayRef<llvm::raw_pwrite_stream *> BCOSs,
40  const std::function<std::unique_ptr<TargetMachine>()> &TMFactory,
42  bool PreserveLocals = false);
43 
44 } // namespace llvm
45 
46 #endif
std::unique_ptr< Module > splitCodeGen(std::unique_ptr< Module > M, ArrayRef< raw_pwrite_stream *> OSs, ArrayRef< llvm::raw_pwrite_stream *> BCOSs, const std::function< std::unique_ptr< TargetMachine >()> &TMFactory, CodeGenFileType FileType=CGFT_ObjectFile, bool PreserveLocals=false)
Split M into OSs.size() partitions, and generate code for each.
Definition: ParallelCG.cpp:37
This class represents lattice values for constants.
Definition: AllocatorList.h:23
Machine Debugify Module
CodeGenFileType
These enums are meant to be passed into addPassesToEmitFile to indicate what type of file to emit...
Definition: CodeGen.h:63
FileType
Defines the file type this file represents.
Definition: InterfaceFile.h:57
print Print MemDeps of function