Compile C code to a llvm::Module
| 59 | |
| 60 | // Compile C code to a llvm::Module |
| 61 | std::unique_ptr<llvm::Module> compileCCode(const char* execPath, boost::string_view code, |
| 62 | const std::vector<std::string>& args, |
| 63 | llvm::LLVMContext& ctx, Result& res) { |
| 64 | std::vector<const char*> cArgs; |
| 65 | for (const auto& arg : args) { cArgs.push_back(arg.c_str()); } |
| 66 | cArgs.push_back("-nostdlib"); |
| 67 | |
| 68 | std::string errors; |
| 69 | |
| 70 | // call chi-ctollvm |
| 71 | std::unique_ptr<llvm::Module> mod; |
| 72 | { |
| 73 | std::vector<const char*> argsToChiCtoLLVM; |
| 74 | for (auto arg : cArgs) { |
| 75 | argsToChiCtoLLVM.push_back("-c"); |
| 76 | argsToChiCtoLLVM.push_back(arg); |
| 77 | } |
| 78 | |
| 79 | std::string generatedBitcode; |
| 80 | try { |
| 81 | exec_stream_t ctollvmExe; |
| 82 | ctollvmExe.set_wait_timeout( |
| 83 | exec_stream_t::s_out | exec_stream_t::s_err | exec_stream_t::s_in, 100'000); |
| 84 | ctollvmExe.set_buffer_limit( |
| 85 | exec_stream_t::s_out | exec_stream_t::s_err | exec_stream_t::s_in, 10'000'000); |
| 86 | |
| 87 | auto exeLoc = fs::path(execPath).parent_path() / |
| 88 | "chi-ctollvm" |
| 89 | #if WIN32 |
| 90 | ".exe" |
| 91 | #endif |
| 92 | ; |
| 93 | assert(fs::is_regular_file(exeLoc) && |
| 94 | "chi-ctollvm isn't installed in the same directory as chi"); |
| 95 | |
| 96 | ctollvmExe.set_text_mode(exec_stream_t::s_in); |
| 97 | ctollvmExe.set_binary_mode(exec_stream_t::s_out); |
| 98 | |
| 99 | ctollvmExe.start(exeLoc.string().c_str(), argsToChiCtoLLVM.begin(), |
| 100 | argsToChiCtoLLVM.end()); |
| 101 | |
| 102 | // push it the code and close the stream |
| 103 | ctollvmExe.in() << code; |
| 104 | if (!ctollvmExe.close_in()) { |
| 105 | res.addEntry("EUKN", "Failed to close input stream to chi-ctollvm", {}); |
| 106 | return nullptr; |
| 107 | } |
| 108 | |
| 109 | // get stderr and stdout |
| 110 | generatedBitcode = read_all(ctollvmExe.out(), res); |
| 111 | auto errs = read_all(ctollvmExe.err(), res); |
| 112 | |
| 113 | if (!ctollvmExe.close()) { |
| 114 | res.addEntry("EUKN", "Failed to close chi-ctollvm process", {}); |
| 115 | return nullptr; |
| 116 | } |
| 117 | |
| 118 | auto errCode = ctollvmExe.exit_code(); |