1 //===-- tools/bugpoint/ToolRunner.h -----------------------------*- 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 file exposes an abstraction around a platform C compiler, used to 10 // compile C and assembly code. It also exposes an "AbstractIntepreter" 11 // interface, which is used to execute code using one of the LLVM execution 12 // engines. 13 // 14 //===----------------------------------------------------------------------===// 15 16 #ifndef LLVM_TOOLS_BUGPOINT_TOOLRUNNER_H 17 #define LLVM_TOOLS_BUGPOINT_TOOLRUNNER_H 18 19 #include "llvm/Support/CommandLine.h" 20 #include "llvm/Support/Error.h" 21 #include "llvm/Support/Path.h" 22 #include "llvm/Support/SystemUtils.h" 23 #include "llvm/TargetParser/Triple.h" 24 #include <exception> 25 #include <vector> 26 27 namespace llvm { 28 29 extern cl::opt<bool> SaveTemps; 30 extern Triple TargetTriple; 31 32 class LLC; 33 34 //===---------------------------------------------------------------------===// 35 // CC abstraction 36 // 37 class CC { 38 std::string CCPath; // The path to the cc executable. 39 std::string RemoteClientPath; // The path to the rsh / ssh executable. 40 std::vector<std::string> ccArgs; // CC-specific arguments. 41 CC(StringRef ccPath, StringRef RemotePath, 42 const std::vector<std::string> *CCArgs) 43 : CCPath(std::string(ccPath)), RemoteClientPath(std::string(RemotePath)) { 44 if (CCArgs) 45 ccArgs = *CCArgs; 46 } 47 48 public: 49 enum FileType { AsmFile, ObjectFile, CFile }; 50 51 static CC *create(const char *Argv0, std::string &Message, 52 const std::string &CCBinary, 53 const std::vector<std::string> *Args); 54 55 /// ExecuteProgram - Execute the program specified by "ProgramFile" (which is 56 /// either a .s file, or a .c file, specified by FileType), with the specified 57 /// arguments. Standard input is specified with InputFile, and standard 58 /// Output is captured to the specified OutputFile location. The SharedLibs 59 /// option specifies optional native shared objects that can be loaded into 60 /// the program for execution. 61 /// 62 Expected<int> ExecuteProgram( 63 const std::string &ProgramFile, const std::vector<std::string> &Args, 64 FileType fileType, const std::string &InputFile, 65 const std::string &OutputFile, 66 const std::vector<std::string> &CCArgs = std::vector<std::string>(), 67 unsigned Timeout = 0, unsigned MemoryLimit = 0); 68 69 /// MakeSharedObject - This compiles the specified file (which is either a .c 70 /// file or a .s file) into a shared object. 71 /// 72 Error MakeSharedObject(const std::string &InputFile, FileType fileType, 73 std::string &OutputFile, 74 const std::vector<std::string> &ArgsForCC); 75 }; 76 77 //===---------------------------------------------------------------------===// 78 /// AbstractInterpreter Class - Subclasses of this class are used to execute 79 /// LLVM bitcode in a variety of ways. This abstract interface hides this 80 /// complexity behind a simple interface. 81 /// 82 class AbstractInterpreter { 83 virtual void anchor(); 84 85 public: 86 static LLC *createLLC(const char *Argv0, std::string &Message, 87 const std::string &CCBinary, 88 const std::vector<std::string> *Args = nullptr, 89 const std::vector<std::string> *CCArgs = nullptr, 90 bool UseIntegratedAssembler = false); 91 92 static AbstractInterpreter * 93 createLLI(const char *Argv0, std::string &Message, 94 const std::vector<std::string> *Args = nullptr); 95 96 static AbstractInterpreter * 97 createJIT(const char *Argv0, std::string &Message, 98 const std::vector<std::string> *Args = nullptr); 99 100 static AbstractInterpreter * 101 createCustomCompiler(const char *Argv0, std::string &Message, 102 const std::string &CompileCommandLine); 103 104 static AbstractInterpreter * 105 createCustomExecutor(const char *Argv0, std::string &Message, 106 const std::string &ExecCommandLine); 107 108 virtual ~AbstractInterpreter() {} 109 110 /// compileProgram - Compile the specified program from bitcode to executable 111 /// code. This does not produce any output, it is only used when debugging 112 /// the code generator. It returns false if the code generator fails. 113 virtual Error compileProgram(const std::string &Bitcode, unsigned Timeout = 0, 114 unsigned MemoryLimit = 0) { 115 return Error::success(); 116 } 117 118 /// Compile the specified program from bitcode to code understood by the CC 119 /// driver (either C or asm). Returns an error if the code generator fails,, 120 /// otherwise, the type of code emitted. 121 virtual Expected<CC::FileType> OutputCode(const std::string &Bitcode, 122 std::string &OutFile, 123 unsigned Timeout = 0, 124 unsigned MemoryLimit = 0) { 125 return make_error<StringError>( 126 "OutputCode not supported by this AbstractInterpreter!", 127 inconvertibleErrorCode()); 128 } 129 130 /// ExecuteProgram - Run the specified bitcode file, emitting output to the 131 /// specified filename. This sets RetVal to the exit code of the program or 132 /// returns an Error if a problem was encountered that prevented execution of 133 /// the program. 134 /// 135 virtual Expected<int> ExecuteProgram( 136 const std::string &Bitcode, const std::vector<std::string> &Args, 137 const std::string &InputFile, const std::string &OutputFile, 138 const std::vector<std::string> &CCArgs = std::vector<std::string>(), 139 const std::vector<std::string> &SharedLibs = std::vector<std::string>(), 140 unsigned Timeout = 0, unsigned MemoryLimit = 0) = 0; 141 }; 142 143 //===---------------------------------------------------------------------===// 144 // LLC Implementation of AbstractIntepreter interface 145 // 146 class LLC : public AbstractInterpreter { 147 std::string LLCPath; // The path to the LLC executable. 148 std::vector<std::string> ToolArgs; // Extra args to pass to LLC. 149 CC *cc; 150 bool UseIntegratedAssembler; 151 152 public: 153 LLC(const std::string &llcPath, CC *cc, const std::vector<std::string> *Args, 154 bool useIntegratedAssembler) 155 : LLCPath(llcPath), cc(cc), 156 UseIntegratedAssembler(useIntegratedAssembler) { 157 ToolArgs.clear(); 158 if (Args) 159 ToolArgs = *Args; 160 } 161 ~LLC() override { delete cc; } 162 163 /// compileProgram - Compile the specified program from bitcode to executable 164 /// code. This does not produce any output, it is only used when debugging 165 /// the code generator. Returns false if the code generator fails. 166 Error compileProgram(const std::string &Bitcode, unsigned Timeout = 0, 167 unsigned MemoryLimit = 0) override; 168 169 Expected<int> ExecuteProgram( 170 const std::string &Bitcode, const std::vector<std::string> &Args, 171 const std::string &InputFile, const std::string &OutputFile, 172 const std::vector<std::string> &CCArgs = std::vector<std::string>(), 173 const std::vector<std::string> &SharedLibs = std::vector<std::string>(), 174 unsigned Timeout = 0, unsigned MemoryLimit = 0) override; 175 176 Expected<CC::FileType> OutputCode(const std::string &Bitcode, 177 std::string &OutFile, unsigned Timeout = 0, 178 unsigned MemoryLimit = 0) override; 179 }; 180 181 /// Find the first executable file \ExeName, either in the user's PATH or, 182 /// failing that, in the same directory as argv[0]. This allows us to find 183 /// another LLVM tool if it is built in the same directory. If no executable is 184 /// found, an error is returned. 185 ErrorOr<std::string> FindProgramByName(const std::string &ExeName, 186 const char *Argv0, void *MainAddr); 187 188 } // End llvm namespace 189 190 #endif 191