1 //===-- llvm/CodeGen/ParallelCG.h - Parallel code generation ----*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This header declares functions that can be used for parallel code generation. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_CODEGEN_PARALLELCG_H 15 #define LLVM_CODEGEN_PARALLELCG_H 16 17 #include "llvm/Support/CodeGen.h" 18 #include "llvm/Target/TargetMachine.h" 19 20 #include <functional> 21 22 namespace llvm { 23 24 template <typename T> class ArrayRef; 25 class Module; 26 class TargetOptions; 27 class raw_pwrite_stream; 28 29 /// Split M into OSs.size() partitions, and generate code for each. Takes a 30 /// factory function for the TargetMachine TMFactory. Writes OSs.size() output 31 /// files to the output streams in OSs. The resulting output files if linked 32 /// together are intended to be equivalent to the single output file that would 33 /// have been code generated from M. 34 /// 35 /// Writes bitcode for individual partitions into output streams in BCOSs, if 36 /// BCOSs is not empty. 37 /// 38 /// \returns M if OSs.size() == 1, otherwise returns std::unique_ptr<Module>(). 39 std::unique_ptr<Module> 40 splitCodeGen(std::unique_ptr<Module> M, ArrayRef<raw_pwrite_stream *> OSs, 41 ArrayRef<llvm::raw_pwrite_stream *> BCOSs, 42 const std::function<std::unique_ptr<TargetMachine>()> &TMFactory, 43 TargetMachine::CodeGenFileType FT = TargetMachine::CGFT_ObjectFile, 44 bool PreserveLocals = false); 45 46 } // namespace llvm 47 48 #endif 49
