rs_cc_options.cpp revision 8f093e05e28046b6fc74175b66a06152f72e0c66
1/* 2 * Copyright 2014, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include "clang/Basic/DiagnosticOptions.h" 18#include "clang/Driver/DriverDiagnostic.h" 19#include "clang/Driver/Options.h" 20#include "clang/Frontend/Utils.h" 21 22#include "llvm/Option/Arg.h" 23#include "llvm/Option/ArgList.h" 24#include "llvm/Option/Option.h" 25#include "llvm/Option/OptTable.h" 26#include "llvm/Support/CommandLine.h" 27 28#include "rs_cc_options.h" 29#include "slang.h" 30#include "slang_assert.h" 31 32#include <cstdlib> 33#include <string> 34#include <utility> 35#include <vector> 36 37enum { 38 OPT_INVALID = 0, // This is not an option ID. 39#define PREFIX(NAME, VALUE) 40#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 41 HELPTEXT, METAVAR) \ 42 OPT_##ID, 43#include "RSCCOptions.inc" 44 LastOption 45#undef OPTION 46#undef PREFIX 47}; 48 49#define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE; 50#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 51 HELPTEXT, METAVAR) 52#include "RSCCOptions.inc" 53#undef OPTION 54#undef PREFIX 55 56static const llvm::opt::OptTable::Info RSCCInfoTable[] = { 57#define PREFIX(NAME, VALUE) 58#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM, \ 59 HELPTEXT, METAVAR) \ 60 { \ 61 PREFIX, NAME, HELPTEXT, METAVAR, OPT_##ID, llvm::opt::Option::KIND##Class, \ 62 PARAM, FLAGS, OPT_##GROUP, OPT_##ALIAS, ALIASARGS \ 63 } \ 64 , 65#include "RSCCOptions.inc" 66#undef OPTION 67#undef PREFIX 68}; 69 70namespace { 71 72class RSCCOptTable : public llvm::opt::OptTable { 73 public: 74 RSCCOptTable() 75 : OptTable(llvm::makeArrayRef(RSCCInfoTable)) {} 76}; 77} 78 79namespace slang { 80 81llvm::opt::OptTable *createRSCCOptTable() { return new RSCCOptTable(); } 82 83// This function is similar to 84// clang/lib/Frontend/CompilerInvocation::CreateFromArgs. 85bool ParseArguments(const llvm::ArrayRef<const char *> &ArgsIn, 86 llvm::SmallVectorImpl<const char *> &Inputs, 87 RSCCOptions &Opts, clang::DiagnosticOptions &DiagOpts, 88 llvm::StringSaver &StringSaver) { 89 // We use a different diagnostic engine for argument parsing from the rest of 90 // the work. This mimics what's done in clang. I believe it is so the 91 // argument parsing errors are well formatted while the full errors can be 92 // influenced by command line arguments. 93 llvm::IntrusiveRefCntPtr<clang::DiagnosticOptions> ArgumentParseDiagOpts( 94 new clang::DiagnosticOptions()); 95 llvm::IntrusiveRefCntPtr<clang::DiagnosticIDs> DiagIDs( 96 new clang::DiagnosticIDs()); 97 DiagnosticBuffer DiagsBuffer; 98 clang::DiagnosticsEngine DiagEngine(DiagIDs, &*ArgumentParseDiagOpts, 99 &DiagsBuffer, false); 100 101 // Populate a vector with the command line arguments, expanding command files 102 // that have been included via the '@' argument. 103 llvm::SmallVector<const char *, 256> ArgVector; 104 // Skip over the command name, or we will mistakenly process it as a source file. 105 ArgVector.append(ArgsIn.slice(1).begin(), ArgsIn.end()); 106 llvm::cl::ExpandResponseFiles(StringSaver, llvm::cl::TokenizeGNUCommandLine, 107 ArgVector, false); 108 109 std::unique_ptr<llvm::opt::OptTable> OptParser(createRSCCOptTable()); 110 unsigned MissingArgIndex = 0; 111 unsigned MissingArgCount = 0; 112 llvm::opt::InputArgList Args = 113 OptParser->ParseArgs(ArgVector, MissingArgIndex, MissingArgCount); 114 115 // Check for missing argument error. 116 if (MissingArgCount) { 117 DiagEngine.Report(clang::diag::err_drv_missing_argument) 118 << Args.getArgString(MissingArgIndex) << MissingArgCount; 119 } 120 121 // Issue errors on unknown arguments. 122 for (llvm::opt::arg_iterator it = Args.filtered_begin(OPT_UNKNOWN), 123 ie = Args.filtered_end(); 124 it != ie; ++it) { 125 DiagEngine.Report(clang::diag::err_drv_unknown_argument) 126 << (*it)->getAsString(Args); 127 } 128 129 DiagOpts.IgnoreWarnings = Args.hasArg(OPT_w); 130 DiagOpts.Warnings = Args.getAllArgValues(OPT_W); 131 132 for (llvm::opt::ArgList::const_iterator it = Args.begin(), ie = Args.end(); 133 it != ie; ++it) { 134 const llvm::opt::Arg *A = *it; 135 if (A->getOption().getKind() == llvm::opt::Option::InputClass) 136 Inputs.push_back(A->getValue()); 137 } 138 139 Opts.mIncludePaths = Args.getAllArgValues(OPT_I); 140 141 Opts.mBitcodeOutputDir = Args.getLastArgValue(OPT_o); 142 143 if (const llvm::opt::Arg *A = Args.getLastArg(OPT_M_Group)) { 144 switch (A->getOption().getID()) { 145 case OPT_M: { 146 Opts.mEmitDependency = true; 147 Opts.mOutputType = Slang::OT_Dependency; 148 break; 149 } 150 case OPT_MD: { 151 Opts.mEmitDependency = true; 152 Opts.mOutputType = Slang::OT_Bitcode; 153 break; 154 } 155 case OPT_MP: { 156 Opts.mEmitDependency = true; 157 Opts.mOutputType = Slang::OT_Bitcode; 158 Opts.mEmitPhonyDependency = true; 159 break; 160 } 161 default: { slangAssert(false && "Invalid option in M group!"); } 162 } 163 } 164 165 if (const llvm::opt::Arg *A = Args.getLastArg(OPT_Output_Type_Group)) { 166 switch (A->getOption().getID()) { 167 case OPT_emit_asm: { 168 Opts.mOutputType = Slang::OT_Assembly; 169 break; 170 } 171 case OPT_emit_llvm: { 172 Opts.mOutputType = Slang::OT_LLVMAssembly; 173 break; 174 } 175 case OPT_emit_bc: { 176 Opts.mOutputType = Slang::OT_Bitcode; 177 break; 178 } 179 case OPT_emit_nothing: { 180 Opts.mOutputType = Slang::OT_Nothing; 181 break; 182 } 183 default: { slangAssert(false && "Invalid option in output type group!"); } 184 } 185 } 186 187 if (Opts.mEmitDependency && ((Opts.mOutputType != Slang::OT_Bitcode) && 188 (Opts.mOutputType != Slang::OT_Dependency))) 189 DiagEngine.Report(clang::diag::err_drv_argument_not_allowed_with) 190 << Args.getLastArg(OPT_M_Group)->getAsString(Args) 191 << Args.getLastArg(OPT_Output_Type_Group)->getAsString(Args); 192 193 Opts.mAllowRSPrefix = Args.hasArg(OPT_allow_rs_prefix); 194 195 Opts.mJavaReflectionPathBase = 196 Args.getLastArgValue(OPT_java_reflection_path_base); 197 Opts.mJavaReflectionPackageName = 198 Args.getLastArgValue(OPT_java_reflection_package_name); 199 200 Opts.mRSPackageName = Args.getLastArgValue(OPT_rs_package_name); 201 202 llvm::StringRef BitcodeStorageValue = 203 Args.getLastArgValue(OPT_bitcode_storage); 204 if (BitcodeStorageValue == "ar") 205 Opts.mBitcodeStorage = BCST_APK_RESOURCE; 206 else if (BitcodeStorageValue == "jc") 207 Opts.mBitcodeStorage = BCST_JAVA_CODE; 208 else if (!BitcodeStorageValue.empty()) 209 DiagEngine.Report(clang::diag::err_drv_invalid_value) 210 << OptParser->getOptionName(OPT_bitcode_storage) << BitcodeStorageValue; 211 212 llvm::opt::Arg *lastBitwidthArg = Args.getLastArg(OPT_m32, OPT_m64); 213 if (Args.hasArg(OPT_reflect_cpp)) { 214 Opts.mBitcodeStorage = BCST_CPP_CODE; 215 // mJavaReflectionPathBase can be set for C++ reflected builds. 216 // Set it to the standard mBitcodeOutputDir (via -o) by default. 217 if (Opts.mJavaReflectionPathBase.empty()) { 218 Opts.mJavaReflectionPathBase = Opts.mBitcodeOutputDir; 219 } 220 221 // Check for bitwidth arguments. 222 if (lastBitwidthArg) { 223 if (lastBitwidthArg->getOption().matches(OPT_m32)) { 224 Opts.mBitWidth = 32; 225 } else { 226 Opts.mBitWidth = 64; 227 } 228 } 229 } else if (lastBitwidthArg) { 230 // -m32/-m64 are forbidden for non-C++ reflection paths for non-eng builds 231 // (they would make it too easy for a developer to accidentally create and 232 // release an APK that has 32-bit or 64-bit bitcode but not both). 233#ifdef __ENABLE_INTERNAL_OPTIONS 234 if (lastBitwidthArg->getOption().matches(OPT_m32)) { 235 Opts.mBitWidth = 32; 236 } else { 237 Opts.mBitWidth = 64; 238 } 239 Opts.mEmit3264 = false; 240#else 241 DiagEngine.Report( 242 DiagEngine.getCustomDiagID(clang::DiagnosticsEngine::Error, 243 "cannot use -m32/-m64 without specifying " 244 "C++ reflection (-reflect-c++)")); 245#endif 246 } 247 248 Opts.mDependencyOutputDir = 249 Args.getLastArgValue(OPT_output_dep_dir, Opts.mBitcodeOutputDir); 250 Opts.mAdditionalDepTargets = Args.getAllArgValues(OPT_additional_dep_target); 251 252 Opts.mShowHelp = Args.hasArg(OPT_help); 253 Opts.mShowVersion = Args.hasArg(OPT_version); 254 Opts.mDebugEmission = Args.hasArg(OPT_emit_g); 255 Opts.mVerbose = Args.hasArg(OPT_verbose); 256 Opts.mASTPrint = Args.hasArg(OPT_ast_print); 257 258 // Delegate options 259 260 std::vector<std::string> DelegatedStrings; 261 for (int Opt : std::vector<unsigned>{OPT_debug, OPT_print_after_all, OPT_print_before_all}) { 262 if (Args.hasArg(Opt)) { 263 // TODO: Don't assume that the option begins with "-"; determine this programmatically instead. 264 DelegatedStrings.push_back(std::string("-") + std::string(OptParser->getOptionName(Opt))); 265 slangAssert(OptParser->getOptionKind(Opt) == llvm::opt::Option::FlagClass); 266 } 267 } 268 if (DelegatedStrings.size()) { 269 std::vector<const char *> DelegatedCStrs; 270 DelegatedCStrs.push_back(*ArgVector.data()); // program name 271 std::for_each(DelegatedStrings.cbegin(), DelegatedStrings.cend(), 272 [&DelegatedCStrs](const std::string &String) { DelegatedCStrs.push_back(String.c_str()); }); 273 llvm::cl::ParseCommandLineOptions(DelegatedCStrs.size(), DelegatedCStrs.data()); 274 } 275 276 // If we are emitting both 32-bit and 64-bit bitcode, we must embed it. 277 278 size_t OptLevel = 279 clang::getLastArgIntValue(Args, OPT_optimization_level, 3, DiagEngine); 280 281 Opts.mOptimizationLevel = 282 OptLevel == 0 ? llvm::CodeGenOpt::None : llvm::CodeGenOpt::Aggressive; 283 284 Opts.mTargetAPI = 285 clang::getLastArgIntValue(Args, OPT_target_api, RS_VERSION, DiagEngine); 286 287 if (Opts.mTargetAPI == 0) { 288 Opts.mTargetAPI = UINT_MAX; 289 } 290 291 if ((Opts.mTargetAPI < 21) || (Opts.mBitcodeStorage == BCST_CPP_CODE)) 292 Opts.mEmit3264 = false; 293 if (Opts.mEmit3264) 294 Opts.mBitcodeStorage = BCST_JAVA_CODE; 295 296 if (DiagEngine.hasErrorOccurred()) { 297 llvm::errs() << DiagsBuffer.str(); 298 return false; 299 } 300 301 return true; 302} 303} 304