LLVM  10.0.0svn
ParallelCG.h
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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"
18 
19 #include <functional>
20 
21 namespace llvm {
22 
23 template <typename T> class ArrayRef;
24 class Module;
25 class TargetOptions;
26 class raw_pwrite_stream;
27 
28 /// Split M into OSs.size() partitions, and generate code for each. Takes a
29 /// factory function for the TargetMachine TMFactory. Writes OSs.size() output
30 /// files to the output streams in OSs. The resulting output files if linked
31 /// together are intended to be equivalent to the single output file that would
32 /// have been code generated from M.
33 ///
34 /// Writes bitcode for individual partitions into output streams in BCOSs, if
35 /// BCOSs is not empty.
36 ///
37 /// \returns M if OSs.size() == 1, otherwise returns std::unique_ptr<Module>().
38 std::unique_ptr<Module>
39 splitCodeGen(std::unique_ptr<Module> M, ArrayRef<raw_pwrite_stream *> OSs,
40  ArrayRef<llvm::raw_pwrite_stream *> BCOSs,
41  const std::function<std::unique_ptr<TargetMachine>()> &TMFactory,
43  bool PreserveLocals = false);
44 
45 } // namespace llvm
46 
47 #endif
This class represents lattice values for constants.
Definition: AllocatorList.h:23
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, TargetMachine::CodeGenFileType FileType=TargetMachine::CGFT_ObjectFile, bool PreserveLocals=false)
Split M into OSs.size() partitions, and generate code for each.
Definition: ParallelCG.cpp:37
FileType
Defines the file type this file represents.
Definition: InterfaceFile.h:65
print Print MemDeps of function
CodeGenFileType
These enums are meant to be passed into addPassesToEmitFile to indicate what type of file to emit...