Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 1 | //===--- BackendUtil.cpp - LLVM Backend Utilities -------------------------===// |
| 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 | |
Daniel Dunbar | 9b414d3 | 2010-06-15 17:48:49 +0000 | [diff] [blame] | 10 | #include "clang/CodeGen/BackendUtil.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 11 | #include "clang/Basic/Diagnostic.h" |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 12 | #include "clang/Basic/LangOptions.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 13 | #include "clang/Basic/TargetOptions.h" |
Chandler Carruth | 06057ce | 2010-06-15 23:19:56 +0000 | [diff] [blame] | 14 | #include "clang/Frontend/CodeGenOptions.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 15 | #include "clang/Frontend/FrontendDiagnostic.h" |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 16 | #include "clang/Frontend/Utils.h" |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 17 | #include "llvm/ADT/StringSwitch.h" |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 18 | #include "llvm/Bitcode/BitcodeWriterPass.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 19 | #include "llvm/CodeGen/RegAllocRegistry.h" |
| 20 | #include "llvm/CodeGen/SchedulerRegistry.h" |
Chandler Carruth | 3b844ba | 2013-01-02 11:45:17 +0000 | [diff] [blame] | 21 | #include "llvm/IR/DataLayout.h" |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 22 | #include "llvm/IR/IRPrintingPasses.h" |
Chandler Carruth | 3b844ba | 2013-01-02 11:45:17 +0000 | [diff] [blame] | 23 | #include "llvm/IR/Module.h" |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 24 | #include "llvm/IR/Verifier.h" |
Evan Cheng | 693769c | 2011-06-29 01:14:32 +0000 | [diff] [blame] | 25 | #include "llvm/MC/SubtargetFeature.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 26 | #include "llvm/PassManager.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 27 | #include "llvm/Support/CommandLine.h" |
| 28 | #include "llvm/Support/FormattedStream.h" |
| 29 | #include "llvm/Support/PrettyStackTrace.h" |
Evan Cheng | a6b4045 | 2011-08-24 18:09:14 +0000 | [diff] [blame] | 30 | #include "llvm/Support/TargetRegistry.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 31 | #include "llvm/Support/Timer.h" |
| 32 | #include "llvm/Support/raw_ostream.h" |
Rafael Espindola | cf565c5 | 2011-08-02 21:51:02 +0000 | [diff] [blame] | 33 | #include "llvm/Target/TargetLibraryInfo.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 34 | #include "llvm/Target/TargetMachine.h" |
| 35 | #include "llvm/Target/TargetOptions.h" |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 36 | #include "llvm/Target/TargetSubtargetInfo.h" |
Rafael Espindola | cf565c5 | 2011-08-02 21:51:02 +0000 | [diff] [blame] | 37 | #include "llvm/Transforms/IPO.h" |
| 38 | #include "llvm/Transforms/IPO/PassManagerBuilder.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 39 | #include "llvm/Transforms/Instrumentation.h" |
Michael Gottesman | 23d5b09 | 2013-01-28 01:36:00 +0000 | [diff] [blame] | 40 | #include "llvm/Transforms/ObjCARC.h" |
Rafael Espindola | cf565c5 | 2011-08-02 21:51:02 +0000 | [diff] [blame] | 41 | #include "llvm/Transforms/Scalar.h" |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 42 | #include <memory> |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 43 | using namespace clang; |
| 44 | using namespace llvm; |
| 45 | |
| 46 | namespace { |
| 47 | |
| 48 | class EmitAssemblyHelper { |
David Blaikie | d6471f7 | 2011-09-25 23:23:43 +0000 | [diff] [blame] | 49 | DiagnosticsEngine &Diags; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 50 | const CodeGenOptions &CodeGenOpts; |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 51 | const clang::TargetOptions &TargetOpts; |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 52 | const LangOptions &LangOpts; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 53 | Module *TheModule; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 54 | |
| 55 | Timer CodeGenerationTime; |
| 56 | |
Daniel Dunbar | db2f237 | 2010-09-17 07:35:16 +0000 | [diff] [blame] | 57 | mutable PassManager *CodeGenPasses; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 58 | mutable PassManager *PerModulePasses; |
| 59 | mutable FunctionPassManager *PerFunctionPasses; |
| 60 | |
| 61 | private: |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 62 | PassManager *getCodeGenPasses() const { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 63 | if (!CodeGenPasses) { |
Daniel Dunbar | db2f237 | 2010-09-17 07:35:16 +0000 | [diff] [blame] | 64 | CodeGenPasses = new PassManager(); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 65 | CodeGenPasses->add(new DataLayoutPass()); |
Chandler Carruth | d938e87 | 2013-01-07 01:38:01 +0000 | [diff] [blame] | 66 | if (TM) |
| 67 | TM->addAnalysisPasses(*CodeGenPasses); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 68 | } |
| 69 | return CodeGenPasses; |
| 70 | } |
| 71 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 72 | PassManager *getPerModulePasses() const { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 73 | if (!PerModulePasses) { |
| 74 | PerModulePasses = new PassManager(); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 75 | PerModulePasses->add(new DataLayoutPass()); |
Chandler Carruth | d938e87 | 2013-01-07 01:38:01 +0000 | [diff] [blame] | 76 | if (TM) |
| 77 | TM->addAnalysisPasses(*PerModulePasses); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 78 | } |
| 79 | return PerModulePasses; |
| 80 | } |
| 81 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 82 | FunctionPassManager *getPerFunctionPasses() const { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 83 | if (!PerFunctionPasses) { |
| 84 | PerFunctionPasses = new FunctionPassManager(TheModule); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 85 | PerFunctionPasses->add(new DataLayoutPass()); |
Chandler Carruth | d938e87 | 2013-01-07 01:38:01 +0000 | [diff] [blame] | 86 | if (TM) |
| 87 | TM->addAnalysisPasses(*PerFunctionPasses); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 88 | } |
| 89 | return PerFunctionPasses; |
| 90 | } |
| 91 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 92 | void CreatePasses(); |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 93 | |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 94 | /// CreateTargetMachine - Generates the TargetMachine. |
| 95 | /// Returns Null if it is unable to create the target machine. |
| 96 | /// Some of our clang tests specify triples which are not built |
| 97 | /// into clang. This is okay because these tests check the generated |
| 98 | /// IR, and they require DataLayout which depends on the triple. |
| 99 | /// In this case, we allow this method to fail and not report an error. |
| 100 | /// When MustCreateTM is used, we print an error if we are unable to load |
| 101 | /// the requested target. |
| 102 | TargetMachine *CreateTargetMachine(bool MustCreateTM); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 103 | |
| 104 | /// AddEmitPasses - Add passes necessary to emit assembly or LLVM IR. |
| 105 | /// |
| 106 | /// \return True on success. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 107 | bool AddEmitPasses(BackendAction Action, formatted_raw_ostream &OS); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 108 | |
| 109 | public: |
David Blaikie | d6471f7 | 2011-09-25 23:23:43 +0000 | [diff] [blame] | 110 | EmitAssemblyHelper(DiagnosticsEngine &_Diags, |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 111 | const CodeGenOptions &CGOpts, |
| 112 | const clang::TargetOptions &TOpts, |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 113 | const LangOptions &LOpts, |
Daniel Dunbar | 05a7f3d | 2010-06-07 23:21:04 +0000 | [diff] [blame] | 114 | Module *M) |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 115 | : Diags(_Diags), CodeGenOpts(CGOpts), TargetOpts(TOpts), LangOpts(LOpts), |
Daniel Dunbar | 05a7f3d | 2010-06-07 23:21:04 +0000 | [diff] [blame] | 116 | TheModule(M), CodeGenerationTime("Code Generation Time"), |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 117 | CodeGenPasses(nullptr), PerModulePasses(nullptr), |
| 118 | PerFunctionPasses(nullptr) {} |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 119 | |
| 120 | ~EmitAssemblyHelper() { |
| 121 | delete CodeGenPasses; |
| 122 | delete PerModulePasses; |
| 123 | delete PerFunctionPasses; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 124 | if (CodeGenOpts.DisableFree) |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 125 | BuryPointer(std::move(TM)); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 126 | } |
| 127 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 128 | std::unique_ptr<TargetMachine> TM; |
| 129 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 130 | void EmitAssembly(BackendAction Action, raw_ostream *OS); |
| 131 | }; |
| 132 | |
Alexey Samsonov | e8c0322 | 2012-12-28 09:31:34 +0000 | [diff] [blame] | 133 | // We need this wrapper to access LangOpts and CGOpts from extension functions |
| 134 | // that we add to the PassManagerBuilder. |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 135 | class PassManagerBuilderWrapper : public PassManagerBuilder { |
| 136 | public: |
Alexey Samsonov | 91ecfa6 | 2012-12-03 19:12:58 +0000 | [diff] [blame] | 137 | PassManagerBuilderWrapper(const CodeGenOptions &CGOpts, |
| 138 | const LangOptions &LangOpts) |
| 139 | : PassManagerBuilder(), CGOpts(CGOpts), LangOpts(LangOpts) {} |
| 140 | const CodeGenOptions &getCGOpts() const { return CGOpts; } |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 141 | const LangOptions &getLangOpts() const { return LangOpts; } |
| 142 | private: |
Alexey Samsonov | 91ecfa6 | 2012-12-03 19:12:58 +0000 | [diff] [blame] | 143 | const CodeGenOptions &CGOpts; |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 144 | const LangOptions &LangOpts; |
| 145 | }; |
| 146 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 147 | } |
| 148 | |
Dan Gohman | a8398ea | 2012-01-17 20:54:51 +0000 | [diff] [blame] | 149 | static void addObjCARCAPElimPass(const PassManagerBuilder &Builder, PassManagerBase &PM) { |
| 150 | if (Builder.OptLevel > 0) |
| 151 | PM.add(createObjCARCAPElimPass()); |
| 152 | } |
| 153 | |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 154 | static void addObjCARCExpandPass(const PassManagerBuilder &Builder, PassManagerBase &PM) { |
| 155 | if (Builder.OptLevel > 0) |
| 156 | PM.add(createObjCARCExpandPass()); |
| 157 | } |
| 158 | |
| 159 | static void addObjCARCOptPass(const PassManagerBuilder &Builder, PassManagerBase &PM) { |
| 160 | if (Builder.OptLevel > 0) |
| 161 | PM.add(createObjCARCOptPass()); |
| 162 | } |
| 163 | |
Diego Novillo | b85a9ec | 2013-11-13 12:22:39 +0000 | [diff] [blame] | 164 | static void addSampleProfileLoaderPass(const PassManagerBuilder &Builder, |
| 165 | PassManagerBase &PM) { |
| 166 | const PassManagerBuilderWrapper &BuilderWrapper = |
| 167 | static_cast<const PassManagerBuilderWrapper &>(Builder); |
| 168 | const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts(); |
| 169 | PM.add(createSampleProfileLoaderPass(CGOpts.SampleProfileFile)); |
| 170 | } |
| 171 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 172 | static void addAddDiscriminatorsPass(const PassManagerBuilder &Builder, |
| 173 | PassManagerBase &PM) { |
| 174 | PM.add(createAddDiscriminatorsPass()); |
| 175 | } |
| 176 | |
Nuno Lopes | def1849 | 2012-05-22 17:19:45 +0000 | [diff] [blame] | 177 | static void addBoundsCheckingPass(const PassManagerBuilder &Builder, |
| 178 | PassManagerBase &PM) { |
Joey Gouly | 8548908 | 2012-11-23 10:39:49 +0000 | [diff] [blame] | 179 | PM.add(createBoundsCheckingPass()); |
Nuno Lopes | def1849 | 2012-05-22 17:19:45 +0000 | [diff] [blame] | 180 | } |
| 181 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 182 | static void addSanitizerCoveragePass(const PassManagerBuilder &Builder, |
| 183 | PassManagerBase &PM) { |
| 184 | const PassManagerBuilderWrapper &BuilderWrapper = |
| 185 | static_cast<const PassManagerBuilderWrapper&>(Builder); |
| 186 | const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts(); |
| 187 | PM.add(createSanitizerCoverageModulePass(CGOpts.SanitizeCoverage)); |
| 188 | } |
| 189 | |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 190 | static void addAddressSanitizerPasses(const PassManagerBuilder &Builder, |
| 191 | PassManagerBase &PM) { |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 192 | PM.add(createAddressSanitizerFunctionPass()); |
| 193 | PM.add(createAddressSanitizerModulePass()); |
Kostya Serebryany | 1b4eca6 | 2011-11-16 17:34:26 +0000 | [diff] [blame] | 194 | } |
| 195 | |
Evgeniy Stepanov | 09ccf39 | 2012-12-03 13:20:43 +0000 | [diff] [blame] | 196 | static void addMemorySanitizerPass(const PassManagerBuilder &Builder, |
| 197 | PassManagerBase &PM) { |
Evgeniy Stepanov | 34ef11b | 2012-12-24 08:42:34 +0000 | [diff] [blame] | 198 | const PassManagerBuilderWrapper &BuilderWrapper = |
| 199 | static_cast<const PassManagerBuilderWrapper&>(Builder); |
| 200 | const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts(); |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 201 | PM.add(createMemorySanitizerPass(CGOpts.SanitizeMemoryTrackOrigins)); |
Evgeniy Stepanov | a8d3904 | 2013-01-31 09:53:29 +0000 | [diff] [blame] | 202 | |
| 203 | // MemorySanitizer inserts complex instrumentation that mostly follows |
| 204 | // the logic of the original code, but operates on "shadow" values. |
| 205 | // It can benefit from re-running some general purpose optimization passes. |
| 206 | if (Builder.OptLevel > 0) { |
| 207 | PM.add(createEarlyCSEPass()); |
| 208 | PM.add(createReassociatePass()); |
| 209 | PM.add(createLICMPass()); |
| 210 | PM.add(createGVNPass()); |
| 211 | PM.add(createInstructionCombiningPass()); |
| 212 | PM.add(createDeadStoreEliminationPass()); |
| 213 | } |
Evgeniy Stepanov | 09ccf39 | 2012-12-03 13:20:43 +0000 | [diff] [blame] | 214 | } |
| 215 | |
Kostya Serebryany | 3c93122 | 2012-03-01 22:27:08 +0000 | [diff] [blame] | 216 | static void addThreadSanitizerPass(const PassManagerBuilder &Builder, |
| 217 | PassManagerBase &PM) { |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 218 | PM.add(createThreadSanitizerPass()); |
Kostya Serebryany | 3c93122 | 2012-03-01 22:27:08 +0000 | [diff] [blame] | 219 | } |
| 220 | |
Peter Collingbourne | 2eeed71 | 2013-08-07 22:47:34 +0000 | [diff] [blame] | 221 | static void addDataFlowSanitizerPass(const PassManagerBuilder &Builder, |
| 222 | PassManagerBase &PM) { |
Peter Collingbourne | 5d27a51 | 2013-08-14 18:54:18 +0000 | [diff] [blame] | 223 | const PassManagerBuilderWrapper &BuilderWrapper = |
| 224 | static_cast<const PassManagerBuilderWrapper&>(Builder); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 225 | const LangOptions &LangOpts = BuilderWrapper.getLangOpts(); |
| 226 | PM.add(createDataFlowSanitizerPass(LangOpts.SanitizerBlacklistFile)); |
| 227 | } |
| 228 | |
| 229 | static TargetLibraryInfo *createTLI(llvm::Triple &TargetTriple, |
| 230 | const CodeGenOptions &CodeGenOpts) { |
| 231 | TargetLibraryInfo *TLI = new TargetLibraryInfo(TargetTriple); |
| 232 | if (!CodeGenOpts.SimplifyLibCalls) |
| 233 | TLI->disableAllFunctions(); |
| 234 | return TLI; |
Peter Collingbourne | 2eeed71 | 2013-08-07 22:47:34 +0000 | [diff] [blame] | 235 | } |
| 236 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 237 | void EmitAssemblyHelper::CreatePasses() { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 238 | unsigned OptLevel = CodeGenOpts.OptimizationLevel; |
Douglas Gregor | 4cdad31 | 2012-10-23 20:05:01 +0000 | [diff] [blame] | 239 | CodeGenOptions::InliningMethod Inlining = CodeGenOpts.getInlining(); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 240 | |
| 241 | // Handle disabling of LLVM optimization, where we want to preserve the |
| 242 | // internal module before any optimization. |
| 243 | if (CodeGenOpts.DisableLLVMOpts) { |
| 244 | OptLevel = 0; |
| 245 | Inlining = CodeGenOpts.NoInlining; |
| 246 | } |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 247 | |
Alexey Samsonov | 91ecfa6 | 2012-12-03 19:12:58 +0000 | [diff] [blame] | 248 | PassManagerBuilderWrapper PMBuilder(CodeGenOpts, LangOpts); |
Chris Lattner | 9ca02e5 | 2011-05-21 23:50:44 +0000 | [diff] [blame] | 249 | PMBuilder.OptLevel = OptLevel; |
| 250 | PMBuilder.SizeLevel = CodeGenOpts.OptimizeSize; |
Nick Lewycky | fdf137b | 2013-06-25 01:49:44 +0000 | [diff] [blame] | 251 | PMBuilder.BBVectorize = CodeGenOpts.VectorizeBB; |
| 252 | PMBuilder.SLPVectorize = CodeGenOpts.VectorizeSLP; |
| 253 | PMBuilder.LoopVectorize = CodeGenOpts.VectorizeLoop; |
Andrew Trick | 6445d62 | 2011-04-05 18:49:32 +0000 | [diff] [blame] | 254 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 255 | PMBuilder.DisableTailCalls = CodeGenOpts.DisableTailCalls; |
Chris Lattner | 9ca02e5 | 2011-05-21 23:50:44 +0000 | [diff] [blame] | 256 | PMBuilder.DisableUnitAtATime = !CodeGenOpts.UnitAtATime; |
| 257 | PMBuilder.DisableUnrollLoops = !CodeGenOpts.UnrollLoops; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 258 | PMBuilder.MergeFunctions = CodeGenOpts.MergeFunctions; |
Hal Finkel | ce5b5f1 | 2013-11-17 16:03:29 +0000 | [diff] [blame] | 259 | PMBuilder.RerollLoops = CodeGenOpts.RerollLoops; |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 260 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 261 | PMBuilder.addExtension(PassManagerBuilder::EP_EarlyAsPossible, |
| 262 | addAddDiscriminatorsPass); |
| 263 | |
Diego Novillo | b85a9ec | 2013-11-13 12:22:39 +0000 | [diff] [blame] | 264 | if (!CodeGenOpts.SampleProfileFile.empty()) |
| 265 | PMBuilder.addExtension(PassManagerBuilder::EP_EarlyAsPossible, |
| 266 | addSampleProfileLoaderPass); |
| 267 | |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 268 | // In ObjC ARC mode, add the main ARC optimization passes. |
| 269 | if (LangOpts.ObjCAutoRefCount) { |
| 270 | PMBuilder.addExtension(PassManagerBuilder::EP_EarlyAsPossible, |
| 271 | addObjCARCExpandPass); |
Dan Gohman | a8398ea | 2012-01-17 20:54:51 +0000 | [diff] [blame] | 272 | PMBuilder.addExtension(PassManagerBuilder::EP_ModuleOptimizerEarly, |
| 273 | addObjCARCAPElimPass); |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 274 | PMBuilder.addExtension(PassManagerBuilder::EP_ScalarOptimizerLate, |
| 275 | addObjCARCOptPass); |
| 276 | } |
Kostya Serebryany | 1b4eca6 | 2011-11-16 17:34:26 +0000 | [diff] [blame] | 277 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 278 | if (LangOpts.Sanitize.has(SanitizerKind::LocalBounds)) { |
Nuno Lopes | def1849 | 2012-05-22 17:19:45 +0000 | [diff] [blame] | 279 | PMBuilder.addExtension(PassManagerBuilder::EP_ScalarOptimizerLate, |
| 280 | addBoundsCheckingPass); |
| 281 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
| 282 | addBoundsCheckingPass); |
| 283 | } |
| 284 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 285 | if (CodeGenOpts.SanitizeCoverage) { |
| 286 | PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, |
| 287 | addSanitizerCoveragePass); |
| 288 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
| 289 | addSanitizerCoveragePass); |
| 290 | } |
| 291 | |
| 292 | if (LangOpts.Sanitize.has(SanitizerKind::Address)) { |
Kostya Serebryany | ba1f040 | 2012-10-15 14:22:56 +0000 | [diff] [blame] | 293 | PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 294 | addAddressSanitizerPasses); |
Kostya Serebryany | e5dd2ea | 2011-11-30 22:20:21 +0000 | [diff] [blame] | 295 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 296 | addAddressSanitizerPasses); |
Kostya Serebryany | 1b4eca6 | 2011-11-16 17:34:26 +0000 | [diff] [blame] | 297 | } |
Kostya Serebryany | 3c93122 | 2012-03-01 22:27:08 +0000 | [diff] [blame] | 298 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 299 | if (LangOpts.Sanitize.has(SanitizerKind::Memory)) { |
Evgeniy Stepanov | 09ccf39 | 2012-12-03 13:20:43 +0000 | [diff] [blame] | 300 | PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, |
| 301 | addMemorySanitizerPass); |
| 302 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
| 303 | addMemorySanitizerPass); |
| 304 | } |
| 305 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 306 | if (LangOpts.Sanitize.has(SanitizerKind::Thread)) { |
Kostya Serebryany | e78ec3e | 2012-03-23 23:25:23 +0000 | [diff] [blame] | 307 | PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, |
Kostya Serebryany | 3c93122 | 2012-03-01 22:27:08 +0000 | [diff] [blame] | 308 | addThreadSanitizerPass); |
| 309 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
| 310 | addThreadSanitizerPass); |
| 311 | } |
| 312 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 313 | if (LangOpts.Sanitize.has(SanitizerKind::DataFlow)) { |
Peter Collingbourne | 2eeed71 | 2013-08-07 22:47:34 +0000 | [diff] [blame] | 314 | PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, |
| 315 | addDataFlowSanitizerPass); |
| 316 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
| 317 | addDataFlowSanitizerPass); |
| 318 | } |
| 319 | |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 320 | // Figure out TargetLibraryInfo. |
Bill Wendling | 3621b31 | 2011-05-17 23:06:23 +0000 | [diff] [blame] | 321 | Triple TargetTriple(TheModule->getTargetTriple()); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 322 | PMBuilder.LibraryInfo = createTLI(TargetTriple, CodeGenOpts); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 323 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 324 | switch (Inlining) { |
| 325 | case CodeGenOptions::NoInlining: break; |
| 326 | case CodeGenOptions::NormalInlining: { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 327 | PMBuilder.Inliner = |
| 328 | createFunctionInliningPass(OptLevel, CodeGenOpts.OptimizeSize); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 329 | break; |
| 330 | } |
| 331 | case CodeGenOptions::OnlyAlwaysInlining: |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 332 | // Respect always_inline. |
Chad Rosier | 9875962 | 2012-02-25 02:56:13 +0000 | [diff] [blame] | 333 | if (OptLevel == 0) |
| 334 | // Do not insert lifetime intrinsics at -O0. |
| 335 | PMBuilder.Inliner = createAlwaysInlinerPass(false); |
| 336 | else |
| 337 | PMBuilder.Inliner = createAlwaysInlinerPass(); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 338 | break; |
| 339 | } |
| 340 | |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 341 | // Set up the per-function pass manager. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 342 | FunctionPassManager *FPM = getPerFunctionPasses(); |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 343 | if (CodeGenOpts.VerifyModule) |
| 344 | FPM->add(createVerifierPass()); |
| 345 | PMBuilder.populateFunctionPassManager(*FPM); |
Andrew Trick | 6445d62 | 2011-04-05 18:49:32 +0000 | [diff] [blame] | 346 | |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 347 | // Set up the per-module pass manager. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 348 | PassManager *MPM = getPerModulePasses(); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 349 | if (CodeGenOpts.VerifyModule) |
| 350 | MPM->add(createDebugInfoVerifierPass()); |
Chris Lattner | df61976 | 2011-02-18 22:20:38 +0000 | [diff] [blame] | 351 | |
Nick Lewycky | f2b5e07 | 2013-03-20 01:38:16 +0000 | [diff] [blame] | 352 | if (!CodeGenOpts.DisableGCov && |
| 353 | (CodeGenOpts.EmitGcovArcs || CodeGenOpts.EmitGcovNotes)) { |
Nick Lewycky | c3ae583 | 2013-03-14 05:14:01 +0000 | [diff] [blame] | 354 | // Not using 'GCOVOptions::getDefault' allows us to avoid exiting if |
| 355 | // LLVM's -default-gcov-version flag is set to something invalid. |
| 356 | GCOVOptions Options; |
| 357 | Options.EmitNotes = CodeGenOpts.EmitGcovNotes; |
| 358 | Options.EmitData = CodeGenOpts.EmitGcovArcs; |
| 359 | memcpy(Options.Version, CodeGenOpts.CoverageVersion, 4); |
| 360 | Options.UseCfgChecksum = CodeGenOpts.CoverageExtraChecksum; |
| 361 | Options.NoRedZone = CodeGenOpts.DisableRedZone; |
Nick Lewycky | c3ae583 | 2013-03-14 05:14:01 +0000 | [diff] [blame] | 362 | Options.FunctionNamesInData = |
Nick Lewycky | 83c546a | 2013-03-20 02:14:38 +0000 | [diff] [blame] | 363 | !CodeGenOpts.CoverageNoFunctionNamesInData; |
Nick Lewycky | c3ae583 | 2013-03-14 05:14:01 +0000 | [diff] [blame] | 364 | MPM->add(createGCOVProfilerPass(Options)); |
Douglas Gregor | 4cdad31 | 2012-10-23 20:05:01 +0000 | [diff] [blame] | 365 | if (CodeGenOpts.getDebugInfo() == CodeGenOptions::NoDebugInfo) |
Nick Lewycky | e8ba8d7 | 2011-04-21 23:44:07 +0000 | [diff] [blame] | 366 | MPM->add(createStripSymbolsPass(true)); |
| 367 | } |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 368 | |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 369 | PMBuilder.populateModulePassManager(*MPM); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 370 | } |
| 371 | |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 372 | TargetMachine *EmitAssemblyHelper::CreateTargetMachine(bool MustCreateTM) { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 373 | // Create the TargetMachine for generating code. |
| 374 | std::string Error; |
| 375 | std::string Triple = TheModule->getTargetTriple(); |
| 376 | const llvm::Target *TheTarget = TargetRegistry::lookupTarget(Triple, Error); |
| 377 | if (!TheTarget) { |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 378 | if (MustCreateTM) |
Chad Rosier | a03fc6e | 2013-03-27 00:14:35 +0000 | [diff] [blame] | 379 | Diags.Report(diag::err_fe_unable_to_create_target) << Error; |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 380 | return nullptr; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 381 | } |
| 382 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 383 | unsigned CodeModel = |
| 384 | llvm::StringSwitch<unsigned>(CodeGenOpts.CodeModel) |
| 385 | .Case("small", llvm::CodeModel::Small) |
| 386 | .Case("kernel", llvm::CodeModel::Kernel) |
| 387 | .Case("medium", llvm::CodeModel::Medium) |
| 388 | .Case("large", llvm::CodeModel::Large) |
| 389 | .Case("default", llvm::CodeModel::Default) |
| 390 | .Default(~0u); |
| 391 | assert(CodeModel != ~0u && "invalid code model!"); |
| 392 | llvm::CodeModel::Model CM = static_cast<llvm::CodeModel::Model>(CodeModel); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 393 | |
David Blaikie | 6bd17d2 | 2012-02-07 19:36:38 +0000 | [diff] [blame] | 394 | SmallVector<const char *, 16> BackendArgs; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 395 | BackendArgs.push_back("clang"); // Fake program name. |
| 396 | if (!CodeGenOpts.DebugPass.empty()) { |
| 397 | BackendArgs.push_back("-debug-pass"); |
| 398 | BackendArgs.push_back(CodeGenOpts.DebugPass.c_str()); |
| 399 | } |
| 400 | if (!CodeGenOpts.LimitFloatPrecision.empty()) { |
| 401 | BackendArgs.push_back("-limit-float-precision"); |
| 402 | BackendArgs.push_back(CodeGenOpts.LimitFloatPrecision.c_str()); |
| 403 | } |
| 404 | if (llvm::TimePassesIsEnabled) |
| 405 | BackendArgs.push_back("-time-passes"); |
Daniel Dunbar | 3c66d30 | 2011-03-22 16:48:17 +0000 | [diff] [blame] | 406 | for (unsigned i = 0, e = CodeGenOpts.BackendOptions.size(); i != e; ++i) |
| 407 | BackendArgs.push_back(CodeGenOpts.BackendOptions[i].c_str()); |
Chad Rosier | 1b90605 | 2011-08-26 00:26:29 +0000 | [diff] [blame] | 408 | if (CodeGenOpts.NoGlobalMerge) |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 409 | BackendArgs.push_back("-enable-global-merge=false"); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 410 | BackendArgs.push_back(nullptr); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 411 | llvm::cl::ParseCommandLineOptions(BackendArgs.size() - 1, |
David Blaikie | 6bd17d2 | 2012-02-07 19:36:38 +0000 | [diff] [blame] | 412 | BackendArgs.data()); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 413 | |
| 414 | std::string FeaturesStr; |
Evan Cheng | 368691e | 2011-06-30 02:06:32 +0000 | [diff] [blame] | 415 | if (TargetOpts.Features.size()) { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 416 | SubtargetFeatures Features; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 417 | for (std::vector<std::string>::const_iterator |
| 418 | it = TargetOpts.Features.begin(), |
| 419 | ie = TargetOpts.Features.end(); it != ie; ++it) |
| 420 | Features.AddFeature(*it); |
| 421 | FeaturesStr = Features.getString(); |
| 422 | } |
Evan Cheng | 2860e30 | 2011-07-19 06:37:41 +0000 | [diff] [blame] | 423 | |
| 424 | llvm::Reloc::Model RM = llvm::Reloc::Default; |
| 425 | if (CodeGenOpts.RelocationModel == "static") { |
| 426 | RM = llvm::Reloc::Static; |
| 427 | } else if (CodeGenOpts.RelocationModel == "pic") { |
| 428 | RM = llvm::Reloc::PIC_; |
| 429 | } else { |
| 430 | assert(CodeGenOpts.RelocationModel == "dynamic-no-pic" && |
| 431 | "Invalid PIC model!"); |
| 432 | RM = llvm::Reloc::DynamicNoPIC; |
| 433 | } |
| 434 | |
Evan Cheng | 9254bf7 | 2011-11-16 08:38:55 +0000 | [diff] [blame] | 435 | CodeGenOpt::Level OptLevel = CodeGenOpt::Default; |
| 436 | switch (CodeGenOpts.OptimizationLevel) { |
| 437 | default: break; |
| 438 | case 0: OptLevel = CodeGenOpt::None; break; |
| 439 | case 3: OptLevel = CodeGenOpt::Aggressive; break; |
| 440 | } |
| 441 | |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 442 | llvm::TargetOptions Options; |
| 443 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 444 | Options.ThreadModel = |
| 445 | llvm::StringSwitch<llvm::ThreadModel::Model>(CodeGenOpts.ThreadModel) |
| 446 | .Case("posix", llvm::ThreadModel::POSIX) |
| 447 | .Case("single", llvm::ThreadModel::Single); |
| 448 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 449 | if (CodeGenOpts.DisableIntegratedAS) |
| 450 | Options.DisableIntegratedAS = true; |
| 451 | |
| 452 | if (CodeGenOpts.CompressDebugSections) |
| 453 | Options.CompressDebugSections = true; |
| 454 | |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 455 | // Set frame pointer elimination mode. |
| 456 | if (!CodeGenOpts.DisableFPElim) { |
| 457 | Options.NoFramePointerElim = false; |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 458 | } else if (CodeGenOpts.OmitLeafFramePointer) { |
| 459 | Options.NoFramePointerElim = false; |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 460 | } else { |
| 461 | Options.NoFramePointerElim = true; |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 462 | } |
| 463 | |
Rafael Espindola | 8af669f | 2012-06-19 01:26:10 +0000 | [diff] [blame] | 464 | if (CodeGenOpts.UseInitArray) |
| 465 | Options.UseInitArray = true; |
| 466 | |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 467 | // Set float ABI type. |
| 468 | if (CodeGenOpts.FloatABI == "soft" || CodeGenOpts.FloatABI == "softfp") |
| 469 | Options.FloatABIType = llvm::FloatABI::Soft; |
| 470 | else if (CodeGenOpts.FloatABI == "hard") |
| 471 | Options.FloatABIType = llvm::FloatABI::Hard; |
| 472 | else { |
| 473 | assert(CodeGenOpts.FloatABI.empty() && "Invalid float abi!"); |
| 474 | Options.FloatABIType = llvm::FloatABI::Default; |
| 475 | } |
| 476 | |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 477 | // Set FP fusion mode. |
Lang Hames | 931c083 | 2012-11-15 07:51:26 +0000 | [diff] [blame] | 478 | switch (CodeGenOpts.getFPContractMode()) { |
| 479 | case CodeGenOptions::FPC_Off: |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 480 | Options.AllowFPOpFusion = llvm::FPOpFusion::Strict; |
| 481 | break; |
Lang Hames | 931c083 | 2012-11-15 07:51:26 +0000 | [diff] [blame] | 482 | case CodeGenOptions::FPC_On: |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 483 | Options.AllowFPOpFusion = llvm::FPOpFusion::Standard; |
| 484 | break; |
Lang Hames | 931c083 | 2012-11-15 07:51:26 +0000 | [diff] [blame] | 485 | case CodeGenOptions::FPC_Fast: |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 486 | Options.AllowFPOpFusion = llvm::FPOpFusion::Fast; |
Nadav Rotem | 25030c4 | 2012-10-19 04:15:32 +0000 | [diff] [blame] | 487 | break; |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 488 | } |
| 489 | |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 490 | Options.LessPreciseFPMADOption = CodeGenOpts.LessPreciseFPMAD; |
| 491 | Options.NoInfsFPMath = CodeGenOpts.NoInfsFPMath; |
| 492 | Options.NoNaNsFPMath = CodeGenOpts.NoNaNsFPMath; |
| 493 | Options.NoZerosInBSS = CodeGenOpts.NoZeroInitializedInBSS; |
| 494 | Options.UnsafeFPMath = CodeGenOpts.UnsafeFPMath; |
| 495 | Options.UseSoftFloat = CodeGenOpts.SoftFloat; |
Nick Lewycky | 4e785c9 | 2011-12-06 03:33:03 +0000 | [diff] [blame] | 496 | Options.StackAlignmentOverride = CodeGenOpts.StackAlignment; |
Nick Lewycky | 1db772b | 2012-01-23 08:29:12 +0000 | [diff] [blame] | 497 | Options.DisableTailCalls = CodeGenOpts.DisableTailCalls; |
Bob Wilson | 71fd6cc | 2012-02-03 06:27:22 +0000 | [diff] [blame] | 498 | Options.TrapFuncName = CodeGenOpts.TrapFuncName; |
Chandler Carruth | 5081de5 | 2012-04-08 21:09:51 +0000 | [diff] [blame] | 499 | Options.PositionIndependentExecutable = LangOpts.PIELevel != 0; |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 500 | Options.FunctionSections = CodeGenOpts.FunctionSections; |
| 501 | Options.DataSections = CodeGenOpts.DataSections; |
| 502 | |
| 503 | Options.MCOptions.MCRelaxAll = CodeGenOpts.RelaxAll; |
| 504 | Options.MCOptions.MCSaveTempLabels = CodeGenOpts.SaveTempLabels; |
| 505 | Options.MCOptions.MCUseDwarfDirectory = !CodeGenOpts.NoDwarfDirectoryAsm; |
| 506 | Options.MCOptions.MCNoExecStack = CodeGenOpts.NoExecStack; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 507 | Options.MCOptions.MCFatalWarnings = CodeGenOpts.FatalWarnings; |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 508 | Options.MCOptions.AsmVerbose = CodeGenOpts.AsmVerbose; |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 509 | |
Evan Cheng | 368691e | 2011-06-30 02:06:32 +0000 | [diff] [blame] | 510 | TargetMachine *TM = TheTarget->createTargetMachine(Triple, TargetOpts.CPU, |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 511 | FeaturesStr, Options, |
| 512 | RM, CM, OptLevel); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 513 | |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 514 | return TM; |
| 515 | } |
| 516 | |
| 517 | bool EmitAssemblyHelper::AddEmitPasses(BackendAction Action, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 518 | formatted_raw_ostream &OS) { |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 519 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 520 | // Create the code generator passes. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 521 | PassManager *PM = getCodeGenPasses(); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 522 | |
Chad Rosier | 3f3335d | 2012-02-29 20:14:59 +0000 | [diff] [blame] | 523 | // Add LibraryInfo. |
Daniel Dunbar | cbbe2c0 | 2012-10-19 20:10:10 +0000 | [diff] [blame] | 524 | llvm::Triple TargetTriple(TheModule->getTargetTriple()); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 525 | PM->add(createTLI(TargetTriple, CodeGenOpts)); |
Chad Rosier | 3f3335d | 2012-02-29 20:14:59 +0000 | [diff] [blame] | 526 | |
Chandler Carruth | d938e87 | 2013-01-07 01:38:01 +0000 | [diff] [blame] | 527 | // Add Target specific analysis passes. |
| 528 | TM->addAnalysisPasses(*PM); |
Nadav Rotem | 25030c4 | 2012-10-19 04:15:32 +0000 | [diff] [blame] | 529 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 530 | // Normal mode, emit a .s or .o file by running the code generator. Note, |
| 531 | // this also adds codegenerator level optimization passes. |
| 532 | TargetMachine::CodeGenFileType CGFT = TargetMachine::CGFT_AssemblyFile; |
| 533 | if (Action == Backend_EmitObj) |
| 534 | CGFT = TargetMachine::CGFT_ObjectFile; |
| 535 | else if (Action == Backend_EmitMCNull) |
| 536 | CGFT = TargetMachine::CGFT_Null; |
| 537 | else |
| 538 | assert(Action == Backend_EmitAssembly && "Invalid action!"); |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 539 | |
| 540 | // Add ObjC ARC final-cleanup optimizations. This is done as part of the |
| 541 | // "codegen" passes so that it isn't run multiple times when there is |
| 542 | // inlining happening. |
Dan Gohman | 465a899 | 2012-04-04 21:04:56 +0000 | [diff] [blame] | 543 | if (LangOpts.ObjCAutoRefCount && |
| 544 | CodeGenOpts.OptimizationLevel > 0) |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 545 | PM->add(createObjCARCContractPass()); |
| 546 | |
Evan Cheng | 9254bf7 | 2011-11-16 08:38:55 +0000 | [diff] [blame] | 547 | if (TM->addPassesToEmitFile(*PM, OS, CGFT, |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 548 | /*DisableVerify=*/!CodeGenOpts.VerifyModule)) { |
| 549 | Diags.Report(diag::err_fe_unable_to_interface_with_target); |
| 550 | return false; |
| 551 | } |
| 552 | |
| 553 | return true; |
| 554 | } |
| 555 | |
| 556 | void EmitAssemblyHelper::EmitAssembly(BackendAction Action, raw_ostream *OS) { |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 557 | TimeRegion Region(llvm::TimePassesIsEnabled ? &CodeGenerationTime : nullptr); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 558 | llvm::formatted_raw_ostream FormattedOS; |
| 559 | |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 560 | bool UsesCodeGen = (Action != Backend_EmitNothing && |
| 561 | Action != Backend_EmitBC && |
| 562 | Action != Backend_EmitLL); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 563 | if (!TM) |
| 564 | TM.reset(CreateTargetMachine(UsesCodeGen)); |
| 565 | |
Chad Rosier | a03fc6e | 2013-03-27 00:14:35 +0000 | [diff] [blame] | 566 | if (UsesCodeGen && !TM) return; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 567 | CreatePasses(); |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 568 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 569 | switch (Action) { |
| 570 | case Backend_EmitNothing: |
| 571 | break; |
| 572 | |
| 573 | case Backend_EmitBC: |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 574 | getPerModulePasses()->add(createBitcodeWriterPass(*OS)); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 575 | break; |
| 576 | |
| 577 | case Backend_EmitLL: |
| 578 | FormattedOS.setStream(*OS, formatted_raw_ostream::PRESERVE_STREAM); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 579 | getPerModulePasses()->add(createPrintModulePass(FormattedOS)); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 580 | break; |
| 581 | |
| 582 | default: |
| 583 | FormattedOS.setStream(*OS, formatted_raw_ostream::PRESERVE_STREAM); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 584 | if (!AddEmitPasses(Action, FormattedOS)) |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 585 | return; |
| 586 | } |
| 587 | |
Andrew Trick | 92b5d94 | 2011-04-05 18:56:55 +0000 | [diff] [blame] | 588 | // Before executing passes, print the final values of the LLVM options. |
| 589 | cl::PrintOptionValues(); |
| 590 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 591 | // Run passes. For now we do all passes at once, but eventually we |
| 592 | // would like to have the option of streaming code generation. |
| 593 | |
| 594 | if (PerFunctionPasses) { |
| 595 | PrettyStackTraceString CrashInfo("Per-function optimization"); |
| 596 | |
| 597 | PerFunctionPasses->doInitialization(); |
| 598 | for (Module::iterator I = TheModule->begin(), |
| 599 | E = TheModule->end(); I != E; ++I) |
| 600 | if (!I->isDeclaration()) |
| 601 | PerFunctionPasses->run(*I); |
| 602 | PerFunctionPasses->doFinalization(); |
| 603 | } |
| 604 | |
| 605 | if (PerModulePasses) { |
| 606 | PrettyStackTraceString CrashInfo("Per-module optimization passes"); |
| 607 | PerModulePasses->run(*TheModule); |
| 608 | } |
| 609 | |
| 610 | if (CodeGenPasses) { |
| 611 | PrettyStackTraceString CrashInfo("Code generation"); |
Daniel Dunbar | db2f237 | 2010-09-17 07:35:16 +0000 | [diff] [blame] | 612 | CodeGenPasses->run(*TheModule); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 613 | } |
| 614 | } |
| 615 | |
David Blaikie | d6471f7 | 2011-09-25 23:23:43 +0000 | [diff] [blame] | 616 | void clang::EmitBackendOutput(DiagnosticsEngine &Diags, |
| 617 | const CodeGenOptions &CGOpts, |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 618 | const clang::TargetOptions &TOpts, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 619 | const LangOptions &LOpts, StringRef TDesc, |
| 620 | Module *M, BackendAction Action, |
| 621 | raw_ostream *OS) { |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 622 | EmitAssemblyHelper AsmHelper(Diags, CGOpts, TOpts, LOpts, M); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 623 | |
| 624 | AsmHelper.EmitAssembly(Action, OS); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 625 | |
| 626 | // If an optional clang TargetInfo description string was passed in, use it to |
| 627 | // verify the LLVM TargetMachine's DataLayout. |
| 628 | if (AsmHelper.TM && !TDesc.empty()) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 629 | std::string DLDesc = AsmHelper.TM->getSubtargetImpl() |
| 630 | ->getDataLayout() |
| 631 | ->getStringRepresentation(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 632 | if (DLDesc != TDesc) { |
| 633 | unsigned DiagID = Diags.getCustomDiagID( |
| 634 | DiagnosticsEngine::Error, "backend data layout '%0' does not match " |
| 635 | "expected target description '%1'"); |
| 636 | Diags.Report(DiagID) << DLDesc << TDesc; |
| 637 | } |
| 638 | } |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 639 | } |