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, 41 CodeGenFileType FileType = CGFT_ObjectFile, 42 bool PreserveLocals = false); 43 44 } // namespace llvm 45 46 #endif 47