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 | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 18 | #include "llvm/Analysis/TargetLibraryInfo.h" |
| 19 | #include "llvm/Analysis/TargetTransformInfo.h" |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 20 | #include "llvm/Bitcode/BitcodeWriterPass.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 21 | #include "llvm/CodeGen/RegAllocRegistry.h" |
| 22 | #include "llvm/CodeGen/SchedulerRegistry.h" |
Chandler Carruth | 3b844ba | 2013-01-02 11:45:17 +0000 | [diff] [blame] | 23 | #include "llvm/IR/DataLayout.h" |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 24 | #include "llvm/IR/IRPrintingPasses.h" |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 25 | #include "llvm/IR/LegacyPassManager.h" |
Chandler Carruth | 3b844ba | 2013-01-02 11:45:17 +0000 | [diff] [blame] | 26 | #include "llvm/IR/Module.h" |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 27 | #include "llvm/IR/Verifier.h" |
Evan Cheng | 693769c | 2011-06-29 01:14:32 +0000 | [diff] [blame] | 28 | #include "llvm/MC/SubtargetFeature.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 29 | #include "llvm/Support/CommandLine.h" |
| 30 | #include "llvm/Support/FormattedStream.h" |
| 31 | #include "llvm/Support/PrettyStackTrace.h" |
Evan Cheng | a6b4045 | 2011-08-24 18:09:14 +0000 | [diff] [blame] | 32 | #include "llvm/Support/TargetRegistry.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 33 | #include "llvm/Support/Timer.h" |
| 34 | #include "llvm/Support/raw_ostream.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 35 | #include "llvm/Target/TargetMachine.h" |
| 36 | #include "llvm/Target/TargetOptions.h" |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 37 | #include "llvm/Target/TargetSubtargetInfo.h" |
Rafael Espindola | cf565c5 | 2011-08-02 21:51:02 +0000 | [diff] [blame] | 38 | #include "llvm/Transforms/IPO.h" |
| 39 | #include "llvm/Transforms/IPO/PassManagerBuilder.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 40 | #include "llvm/Transforms/Instrumentation.h" |
Michael Gottesman | 23d5b09 | 2013-01-28 01:36:00 +0000 | [diff] [blame] | 41 | #include "llvm/Transforms/ObjCARC.h" |
Rafael Espindola | cf565c5 | 2011-08-02 21:51:02 +0000 | [diff] [blame] | 42 | #include "llvm/Transforms/Scalar.h" |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 43 | #include "llvm/Transforms/Utils/SymbolRewriter.h" |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 44 | #include <memory> |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 45 | using namespace clang; |
| 46 | using namespace llvm; |
| 47 | |
| 48 | namespace { |
| 49 | |
| 50 | class EmitAssemblyHelper { |
David Blaikie | d6471f7 | 2011-09-25 23:23:43 +0000 | [diff] [blame] | 51 | DiagnosticsEngine &Diags; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 52 | const CodeGenOptions &CodeGenOpts; |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 53 | const clang::TargetOptions &TargetOpts; |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 54 | const LangOptions &LangOpts; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 55 | Module *TheModule; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 56 | |
| 57 | Timer CodeGenerationTime; |
| 58 | |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 59 | mutable legacy::PassManager *CodeGenPasses; |
| 60 | mutable legacy::PassManager *PerModulePasses; |
| 61 | mutable legacy::FunctionPassManager *PerFunctionPasses; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 62 | |
| 63 | private: |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 64 | TargetIRAnalysis getTargetIRAnalysis() const { |
| 65 | if (TM) |
| 66 | return TM->getTargetIRAnalysis(); |
| 67 | |
| 68 | return TargetIRAnalysis(); |
| 69 | } |
| 70 | |
| 71 | legacy::PassManager *getCodeGenPasses() const { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 72 | if (!CodeGenPasses) { |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 73 | CodeGenPasses = new legacy::PassManager(); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 74 | CodeGenPasses->add(new DataLayoutPass()); |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 75 | CodeGenPasses->add( |
| 76 | createTargetTransformInfoWrapperPass(getTargetIRAnalysis())); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 77 | } |
| 78 | return CodeGenPasses; |
| 79 | } |
| 80 | |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 81 | legacy::PassManager *getPerModulePasses() const { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 82 | if (!PerModulePasses) { |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 83 | PerModulePasses = new legacy::PassManager(); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 84 | PerModulePasses->add(new DataLayoutPass()); |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 85 | PerModulePasses->add( |
| 86 | createTargetTransformInfoWrapperPass(getTargetIRAnalysis())); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 87 | } |
| 88 | return PerModulePasses; |
| 89 | } |
| 90 | |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 91 | legacy::FunctionPassManager *getPerFunctionPasses() const { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 92 | if (!PerFunctionPasses) { |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 93 | PerFunctionPasses = new legacy::FunctionPassManager(TheModule); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 94 | PerFunctionPasses->add(new DataLayoutPass()); |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 95 | PerFunctionPasses->add( |
| 96 | createTargetTransformInfoWrapperPass(getTargetIRAnalysis())); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 97 | } |
| 98 | return PerFunctionPasses; |
| 99 | } |
| 100 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 101 | void CreatePasses(); |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 102 | |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 103 | /// CreateTargetMachine - Generates the TargetMachine. |
| 104 | /// Returns Null if it is unable to create the target machine. |
| 105 | /// Some of our clang tests specify triples which are not built |
| 106 | /// into clang. This is okay because these tests check the generated |
| 107 | /// IR, and they require DataLayout which depends on the triple. |
| 108 | /// In this case, we allow this method to fail and not report an error. |
| 109 | /// When MustCreateTM is used, we print an error if we are unable to load |
| 110 | /// the requested target. |
| 111 | TargetMachine *CreateTargetMachine(bool MustCreateTM); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 112 | |
| 113 | /// AddEmitPasses - Add passes necessary to emit assembly or LLVM IR. |
| 114 | /// |
| 115 | /// \return True on success. |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 116 | bool AddEmitPasses(BackendAction Action, formatted_raw_ostream &OS); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 117 | |
| 118 | public: |
David Blaikie | d6471f7 | 2011-09-25 23:23:43 +0000 | [diff] [blame] | 119 | EmitAssemblyHelper(DiagnosticsEngine &_Diags, |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 120 | const CodeGenOptions &CGOpts, |
| 121 | const clang::TargetOptions &TOpts, |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 122 | const LangOptions &LOpts, |
Daniel Dunbar | 05a7f3d | 2010-06-07 23:21:04 +0000 | [diff] [blame] | 123 | Module *M) |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 124 | : Diags(_Diags), CodeGenOpts(CGOpts), TargetOpts(TOpts), LangOpts(LOpts), |
Daniel Dunbar | 05a7f3d | 2010-06-07 23:21:04 +0000 | [diff] [blame] | 125 | TheModule(M), CodeGenerationTime("Code Generation Time"), |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 126 | CodeGenPasses(nullptr), PerModulePasses(nullptr), |
| 127 | PerFunctionPasses(nullptr) {} |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 128 | |
| 129 | ~EmitAssemblyHelper() { |
| 130 | delete CodeGenPasses; |
| 131 | delete PerModulePasses; |
| 132 | delete PerFunctionPasses; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 133 | if (CodeGenOpts.DisableFree) |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 134 | BuryPointer(std::move(TM)); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 135 | } |
| 136 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 137 | std::unique_ptr<TargetMachine> TM; |
| 138 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 139 | void EmitAssembly(BackendAction Action, raw_ostream *OS); |
| 140 | }; |
| 141 | |
Alexey Samsonov | e8c0322 | 2012-12-28 09:31:34 +0000 | [diff] [blame] | 142 | // We need this wrapper to access LangOpts and CGOpts from extension functions |
| 143 | // that we add to the PassManagerBuilder. |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 144 | class PassManagerBuilderWrapper : public PassManagerBuilder { |
| 145 | public: |
Alexey Samsonov | 91ecfa6 | 2012-12-03 19:12:58 +0000 | [diff] [blame] | 146 | PassManagerBuilderWrapper(const CodeGenOptions &CGOpts, |
| 147 | const LangOptions &LangOpts) |
| 148 | : PassManagerBuilder(), CGOpts(CGOpts), LangOpts(LangOpts) {} |
| 149 | const CodeGenOptions &getCGOpts() const { return CGOpts; } |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 150 | const LangOptions &getLangOpts() const { return LangOpts; } |
| 151 | private: |
Alexey Samsonov | 91ecfa6 | 2012-12-03 19:12:58 +0000 | [diff] [blame] | 152 | const CodeGenOptions &CGOpts; |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 153 | const LangOptions &LangOpts; |
| 154 | }; |
| 155 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 156 | } |
| 157 | |
Dan Gohman | a8398ea | 2012-01-17 20:54:51 +0000 | [diff] [blame] | 158 | static void addObjCARCAPElimPass(const PassManagerBuilder &Builder, PassManagerBase &PM) { |
| 159 | if (Builder.OptLevel > 0) |
| 160 | PM.add(createObjCARCAPElimPass()); |
| 161 | } |
| 162 | |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 163 | static void addObjCARCExpandPass(const PassManagerBuilder &Builder, PassManagerBase &PM) { |
| 164 | if (Builder.OptLevel > 0) |
| 165 | PM.add(createObjCARCExpandPass()); |
| 166 | } |
| 167 | |
| 168 | static void addObjCARCOptPass(const PassManagerBuilder &Builder, PassManagerBase &PM) { |
| 169 | if (Builder.OptLevel > 0) |
| 170 | PM.add(createObjCARCOptPass()); |
| 171 | } |
| 172 | |
Diego Novillo | b85a9ec | 2013-11-13 12:22:39 +0000 | [diff] [blame] | 173 | static void addSampleProfileLoaderPass(const PassManagerBuilder &Builder, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 174 | legacy::PassManagerBase &PM) { |
Diego Novillo | b85a9ec | 2013-11-13 12:22:39 +0000 | [diff] [blame] | 175 | const PassManagerBuilderWrapper &BuilderWrapper = |
| 176 | static_cast<const PassManagerBuilderWrapper &>(Builder); |
| 177 | const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts(); |
| 178 | PM.add(createSampleProfileLoaderPass(CGOpts.SampleProfileFile)); |
| 179 | } |
| 180 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 181 | static void addAddDiscriminatorsPass(const PassManagerBuilder &Builder, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 182 | legacy::PassManagerBase &PM) { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 183 | PM.add(createAddDiscriminatorsPass()); |
| 184 | } |
| 185 | |
Nuno Lopes | def1849 | 2012-05-22 17:19:45 +0000 | [diff] [blame] | 186 | static void addBoundsCheckingPass(const PassManagerBuilder &Builder, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 187 | legacy::PassManagerBase &PM) { |
Joey Gouly | 8548908 | 2012-11-23 10:39:49 +0000 | [diff] [blame] | 188 | PM.add(createBoundsCheckingPass()); |
Nuno Lopes | def1849 | 2012-05-22 17:19:45 +0000 | [diff] [blame] | 189 | } |
| 190 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 191 | static void addSanitizerCoveragePass(const PassManagerBuilder &Builder, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 192 | legacy::PassManagerBase &PM) { |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 193 | const PassManagerBuilderWrapper &BuilderWrapper = |
| 194 | static_cast<const PassManagerBuilderWrapper&>(Builder); |
| 195 | const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts(); |
| 196 | PM.add(createSanitizerCoverageModulePass(CGOpts.SanitizeCoverage)); |
| 197 | } |
| 198 | |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 199 | static void addAddressSanitizerPasses(const PassManagerBuilder &Builder, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 200 | legacy::PassManagerBase &PM) { |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 201 | PM.add(createAddressSanitizerFunctionPass()); |
| 202 | PM.add(createAddressSanitizerModulePass()); |
Kostya Serebryany | 1b4eca6 | 2011-11-16 17:34:26 +0000 | [diff] [blame] | 203 | } |
| 204 | |
Evgeniy Stepanov | 09ccf39 | 2012-12-03 13:20:43 +0000 | [diff] [blame] | 205 | static void addMemorySanitizerPass(const PassManagerBuilder &Builder, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 206 | legacy::PassManagerBase &PM) { |
Evgeniy Stepanov | 34ef11b | 2012-12-24 08:42:34 +0000 | [diff] [blame] | 207 | const PassManagerBuilderWrapper &BuilderWrapper = |
| 208 | static_cast<const PassManagerBuilderWrapper&>(Builder); |
| 209 | const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts(); |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 210 | PM.add(createMemorySanitizerPass(CGOpts.SanitizeMemoryTrackOrigins)); |
Evgeniy Stepanov | a8d3904 | 2013-01-31 09:53:29 +0000 | [diff] [blame] | 211 | |
| 212 | // MemorySanitizer inserts complex instrumentation that mostly follows |
| 213 | // the logic of the original code, but operates on "shadow" values. |
| 214 | // It can benefit from re-running some general purpose optimization passes. |
| 215 | if (Builder.OptLevel > 0) { |
| 216 | PM.add(createEarlyCSEPass()); |
| 217 | PM.add(createReassociatePass()); |
| 218 | PM.add(createLICMPass()); |
| 219 | PM.add(createGVNPass()); |
| 220 | PM.add(createInstructionCombiningPass()); |
| 221 | PM.add(createDeadStoreEliminationPass()); |
| 222 | } |
Evgeniy Stepanov | 09ccf39 | 2012-12-03 13:20:43 +0000 | [diff] [blame] | 223 | } |
| 224 | |
Kostya Serebryany | 3c93122 | 2012-03-01 22:27:08 +0000 | [diff] [blame] | 225 | static void addThreadSanitizerPass(const PassManagerBuilder &Builder, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 226 | legacy::PassManagerBase &PM) { |
Stephen Hines | c568f1e | 2014-07-21 00:47:37 -0700 | [diff] [blame] | 227 | PM.add(createThreadSanitizerPass()); |
Kostya Serebryany | 3c93122 | 2012-03-01 22:27:08 +0000 | [diff] [blame] | 228 | } |
| 229 | |
Peter Collingbourne | 2eeed71 | 2013-08-07 22:47:34 +0000 | [diff] [blame] | 230 | static void addDataFlowSanitizerPass(const PassManagerBuilder &Builder, |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 231 | legacy::PassManagerBase &PM) { |
Peter Collingbourne | 5d27a51 | 2013-08-14 18:54:18 +0000 | [diff] [blame] | 232 | const PassManagerBuilderWrapper &BuilderWrapper = |
| 233 | static_cast<const PassManagerBuilderWrapper&>(Builder); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 234 | const LangOptions &LangOpts = BuilderWrapper.getLangOpts(); |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 235 | PM.add(createDataFlowSanitizerPass(LangOpts.SanitizerBlacklistFiles)); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 236 | } |
| 237 | |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 238 | static TargetLibraryInfoImpl *createTLII(llvm::Triple &TargetTriple, |
| 239 | const CodeGenOptions &CodeGenOpts) { |
| 240 | TargetLibraryInfoImpl *TLII = new TargetLibraryInfoImpl(TargetTriple); |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 241 | if (!CodeGenOpts.SimplifyLibCalls) |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 242 | TLII->disableAllFunctions(); |
| 243 | return TLII; |
| 244 | } |
| 245 | |
| 246 | static void addSymbolRewriterPass(const CodeGenOptions &Opts, |
| 247 | legacy::PassManager *MPM) { |
| 248 | llvm::SymbolRewriter::RewriteDescriptorList DL; |
| 249 | |
| 250 | llvm::SymbolRewriter::RewriteMapParser MapParser; |
| 251 | for (const auto &MapFile : Opts.RewriteMapFiles) |
| 252 | MapParser.parse(MapFile, &DL); |
| 253 | |
| 254 | MPM->add(createRewriteSymbolsPass(DL)); |
Peter Collingbourne | 2eeed71 | 2013-08-07 22:47:34 +0000 | [diff] [blame] | 255 | } |
| 256 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 257 | void EmitAssemblyHelper::CreatePasses() { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 258 | unsigned OptLevel = CodeGenOpts.OptimizationLevel; |
Douglas Gregor | 4cdad31 | 2012-10-23 20:05:01 +0000 | [diff] [blame] | 259 | CodeGenOptions::InliningMethod Inlining = CodeGenOpts.getInlining(); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 260 | |
| 261 | // Handle disabling of LLVM optimization, where we want to preserve the |
| 262 | // internal module before any optimization. |
| 263 | if (CodeGenOpts.DisableLLVMOpts) { |
| 264 | OptLevel = 0; |
| 265 | Inlining = CodeGenOpts.NoInlining; |
| 266 | } |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 267 | |
Alexey Samsonov | 91ecfa6 | 2012-12-03 19:12:58 +0000 | [diff] [blame] | 268 | PassManagerBuilderWrapper PMBuilder(CodeGenOpts, LangOpts); |
Chris Lattner | 9ca02e5 | 2011-05-21 23:50:44 +0000 | [diff] [blame] | 269 | PMBuilder.OptLevel = OptLevel; |
| 270 | PMBuilder.SizeLevel = CodeGenOpts.OptimizeSize; |
Nick Lewycky | fdf137b | 2013-06-25 01:49:44 +0000 | [diff] [blame] | 271 | PMBuilder.BBVectorize = CodeGenOpts.VectorizeBB; |
| 272 | PMBuilder.SLPVectorize = CodeGenOpts.VectorizeSLP; |
| 273 | PMBuilder.LoopVectorize = CodeGenOpts.VectorizeLoop; |
Andrew Trick | 6445d62 | 2011-04-05 18:49:32 +0000 | [diff] [blame] | 274 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 275 | PMBuilder.DisableTailCalls = CodeGenOpts.DisableTailCalls; |
Chris Lattner | 9ca02e5 | 2011-05-21 23:50:44 +0000 | [diff] [blame] | 276 | PMBuilder.DisableUnitAtATime = !CodeGenOpts.UnitAtATime; |
| 277 | PMBuilder.DisableUnrollLoops = !CodeGenOpts.UnrollLoops; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 278 | PMBuilder.MergeFunctions = CodeGenOpts.MergeFunctions; |
Hal Finkel | ce5b5f1 | 2013-11-17 16:03:29 +0000 | [diff] [blame] | 279 | PMBuilder.RerollLoops = CodeGenOpts.RerollLoops; |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 280 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 281 | PMBuilder.addExtension(PassManagerBuilder::EP_EarlyAsPossible, |
| 282 | addAddDiscriminatorsPass); |
| 283 | |
Diego Novillo | b85a9ec | 2013-11-13 12:22:39 +0000 | [diff] [blame] | 284 | if (!CodeGenOpts.SampleProfileFile.empty()) |
| 285 | PMBuilder.addExtension(PassManagerBuilder::EP_EarlyAsPossible, |
| 286 | addSampleProfileLoaderPass); |
| 287 | |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 288 | // In ObjC ARC mode, add the main ARC optimization passes. |
| 289 | if (LangOpts.ObjCAutoRefCount) { |
| 290 | PMBuilder.addExtension(PassManagerBuilder::EP_EarlyAsPossible, |
| 291 | addObjCARCExpandPass); |
Dan Gohman | a8398ea | 2012-01-17 20:54:51 +0000 | [diff] [blame] | 292 | PMBuilder.addExtension(PassManagerBuilder::EP_ModuleOptimizerEarly, |
| 293 | addObjCARCAPElimPass); |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 294 | PMBuilder.addExtension(PassManagerBuilder::EP_ScalarOptimizerLate, |
| 295 | addObjCARCOptPass); |
| 296 | } |
Kostya Serebryany | 1b4eca6 | 2011-11-16 17:34:26 +0000 | [diff] [blame] | 297 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 298 | if (LangOpts.Sanitize.has(SanitizerKind::LocalBounds)) { |
Nuno Lopes | def1849 | 2012-05-22 17:19:45 +0000 | [diff] [blame] | 299 | PMBuilder.addExtension(PassManagerBuilder::EP_ScalarOptimizerLate, |
| 300 | addBoundsCheckingPass); |
| 301 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
| 302 | addBoundsCheckingPass); |
| 303 | } |
| 304 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 305 | if (CodeGenOpts.SanitizeCoverage) { |
| 306 | PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, |
| 307 | addSanitizerCoveragePass); |
| 308 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
| 309 | addSanitizerCoveragePass); |
| 310 | } |
| 311 | |
| 312 | if (LangOpts.Sanitize.has(SanitizerKind::Address)) { |
Kostya Serebryany | ba1f040 | 2012-10-15 14:22:56 +0000 | [diff] [blame] | 313 | PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 314 | addAddressSanitizerPasses); |
Kostya Serebryany | e5dd2ea | 2011-11-30 22:20:21 +0000 | [diff] [blame] | 315 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 316 | addAddressSanitizerPasses); |
Kostya Serebryany | 1b4eca6 | 2011-11-16 17:34:26 +0000 | [diff] [blame] | 317 | } |
Kostya Serebryany | 3c93122 | 2012-03-01 22:27:08 +0000 | [diff] [blame] | 318 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 319 | if (LangOpts.Sanitize.has(SanitizerKind::Memory)) { |
Evgeniy Stepanov | 09ccf39 | 2012-12-03 13:20:43 +0000 | [diff] [blame] | 320 | PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, |
| 321 | addMemorySanitizerPass); |
| 322 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
| 323 | addMemorySanitizerPass); |
| 324 | } |
| 325 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 326 | if (LangOpts.Sanitize.has(SanitizerKind::Thread)) { |
Kostya Serebryany | e78ec3e | 2012-03-23 23:25:23 +0000 | [diff] [blame] | 327 | PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, |
Kostya Serebryany | 3c93122 | 2012-03-01 22:27:08 +0000 | [diff] [blame] | 328 | addThreadSanitizerPass); |
| 329 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
| 330 | addThreadSanitizerPass); |
| 331 | } |
| 332 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 333 | if (LangOpts.Sanitize.has(SanitizerKind::DataFlow)) { |
Peter Collingbourne | 2eeed71 | 2013-08-07 22:47:34 +0000 | [diff] [blame] | 334 | PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, |
| 335 | addDataFlowSanitizerPass); |
| 336 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
| 337 | addDataFlowSanitizerPass); |
| 338 | } |
| 339 | |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 340 | // Figure out TargetLibraryInfo. |
Bill Wendling | 3621b31 | 2011-05-17 23:06:23 +0000 | [diff] [blame] | 341 | Triple TargetTriple(TheModule->getTargetTriple()); |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 342 | PMBuilder.LibraryInfo = createTLII(TargetTriple, CodeGenOpts); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 343 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 344 | switch (Inlining) { |
| 345 | case CodeGenOptions::NoInlining: break; |
| 346 | case CodeGenOptions::NormalInlining: { |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 347 | PMBuilder.Inliner = |
| 348 | createFunctionInliningPass(OptLevel, CodeGenOpts.OptimizeSize); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 349 | break; |
| 350 | } |
| 351 | case CodeGenOptions::OnlyAlwaysInlining: |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 352 | // Respect always_inline. |
Chad Rosier | 9875962 | 2012-02-25 02:56:13 +0000 | [diff] [blame] | 353 | if (OptLevel == 0) |
| 354 | // Do not insert lifetime intrinsics at -O0. |
| 355 | PMBuilder.Inliner = createAlwaysInlinerPass(false); |
| 356 | else |
| 357 | PMBuilder.Inliner = createAlwaysInlinerPass(); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 358 | break; |
| 359 | } |
| 360 | |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 361 | // Set up the per-function pass manager. |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 362 | legacy::FunctionPassManager *FPM = getPerFunctionPasses(); |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 363 | if (CodeGenOpts.VerifyModule) |
| 364 | FPM->add(createVerifierPass()); |
| 365 | PMBuilder.populateFunctionPassManager(*FPM); |
Andrew Trick | 6445d62 | 2011-04-05 18:49:32 +0000 | [diff] [blame] | 366 | |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 367 | // Set up the per-module pass manager. |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 368 | legacy::PassManager *MPM = getPerModulePasses(); |
| 369 | if (!CodeGenOpts.RewriteMapFiles.empty()) |
| 370 | addSymbolRewriterPass(CodeGenOpts, MPM); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 371 | if (CodeGenOpts.VerifyModule) |
| 372 | MPM->add(createDebugInfoVerifierPass()); |
Chris Lattner | df61976 | 2011-02-18 22:20:38 +0000 | [diff] [blame] | 373 | |
Nick Lewycky | f2b5e07 | 2013-03-20 01:38:16 +0000 | [diff] [blame] | 374 | if (!CodeGenOpts.DisableGCov && |
| 375 | (CodeGenOpts.EmitGcovArcs || CodeGenOpts.EmitGcovNotes)) { |
Nick Lewycky | c3ae583 | 2013-03-14 05:14:01 +0000 | [diff] [blame] | 376 | // Not using 'GCOVOptions::getDefault' allows us to avoid exiting if |
| 377 | // LLVM's -default-gcov-version flag is set to something invalid. |
| 378 | GCOVOptions Options; |
| 379 | Options.EmitNotes = CodeGenOpts.EmitGcovNotes; |
| 380 | Options.EmitData = CodeGenOpts.EmitGcovArcs; |
| 381 | memcpy(Options.Version, CodeGenOpts.CoverageVersion, 4); |
| 382 | Options.UseCfgChecksum = CodeGenOpts.CoverageExtraChecksum; |
| 383 | Options.NoRedZone = CodeGenOpts.DisableRedZone; |
Nick Lewycky | c3ae583 | 2013-03-14 05:14:01 +0000 | [diff] [blame] | 384 | Options.FunctionNamesInData = |
Nick Lewycky | 83c546a | 2013-03-20 02:14:38 +0000 | [diff] [blame] | 385 | !CodeGenOpts.CoverageNoFunctionNamesInData; |
Nick Lewycky | c3ae583 | 2013-03-14 05:14:01 +0000 | [diff] [blame] | 386 | MPM->add(createGCOVProfilerPass(Options)); |
Douglas Gregor | 4cdad31 | 2012-10-23 20:05:01 +0000 | [diff] [blame] | 387 | if (CodeGenOpts.getDebugInfo() == CodeGenOptions::NoDebugInfo) |
Nick Lewycky | e8ba8d7 | 2011-04-21 23:44:07 +0000 | [diff] [blame] | 388 | MPM->add(createStripSymbolsPass(true)); |
| 389 | } |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 390 | |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 391 | if (CodeGenOpts.ProfileInstrGenerate) { |
| 392 | InstrProfOptions Options; |
| 393 | Options.NoRedZone = CodeGenOpts.DisableRedZone; |
| 394 | MPM->add(createInstrProfilingPass(Options)); |
| 395 | } |
| 396 | |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 397 | PMBuilder.populateModulePassManager(*MPM); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 398 | } |
| 399 | |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 400 | TargetMachine *EmitAssemblyHelper::CreateTargetMachine(bool MustCreateTM) { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 401 | // Create the TargetMachine for generating code. |
| 402 | std::string Error; |
| 403 | std::string Triple = TheModule->getTargetTriple(); |
| 404 | const llvm::Target *TheTarget = TargetRegistry::lookupTarget(Triple, Error); |
| 405 | if (!TheTarget) { |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 406 | if (MustCreateTM) |
Chad Rosier | a03fc6e | 2013-03-27 00:14:35 +0000 | [diff] [blame] | 407 | Diags.Report(diag::err_fe_unable_to_create_target) << Error; |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 408 | return nullptr; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 409 | } |
| 410 | |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 411 | unsigned CodeModel = |
| 412 | llvm::StringSwitch<unsigned>(CodeGenOpts.CodeModel) |
| 413 | .Case("small", llvm::CodeModel::Small) |
| 414 | .Case("kernel", llvm::CodeModel::Kernel) |
| 415 | .Case("medium", llvm::CodeModel::Medium) |
| 416 | .Case("large", llvm::CodeModel::Large) |
| 417 | .Case("default", llvm::CodeModel::Default) |
| 418 | .Default(~0u); |
| 419 | assert(CodeModel != ~0u && "invalid code model!"); |
| 420 | llvm::CodeModel::Model CM = static_cast<llvm::CodeModel::Model>(CodeModel); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 421 | |
David Blaikie | 6bd17d2 | 2012-02-07 19:36:38 +0000 | [diff] [blame] | 422 | SmallVector<const char *, 16> BackendArgs; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 423 | BackendArgs.push_back("clang"); // Fake program name. |
| 424 | if (!CodeGenOpts.DebugPass.empty()) { |
| 425 | BackendArgs.push_back("-debug-pass"); |
| 426 | BackendArgs.push_back(CodeGenOpts.DebugPass.c_str()); |
| 427 | } |
| 428 | if (!CodeGenOpts.LimitFloatPrecision.empty()) { |
| 429 | BackendArgs.push_back("-limit-float-precision"); |
| 430 | BackendArgs.push_back(CodeGenOpts.LimitFloatPrecision.c_str()); |
| 431 | } |
| 432 | if (llvm::TimePassesIsEnabled) |
| 433 | BackendArgs.push_back("-time-passes"); |
Daniel Dunbar | 3c66d30 | 2011-03-22 16:48:17 +0000 | [diff] [blame] | 434 | for (unsigned i = 0, e = CodeGenOpts.BackendOptions.size(); i != e; ++i) |
| 435 | BackendArgs.push_back(CodeGenOpts.BackendOptions[i].c_str()); |
Chad Rosier | 1b90605 | 2011-08-26 00:26:29 +0000 | [diff] [blame] | 436 | if (CodeGenOpts.NoGlobalMerge) |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 437 | BackendArgs.push_back("-enable-global-merge=false"); |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 438 | BackendArgs.push_back(nullptr); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 439 | llvm::cl::ParseCommandLineOptions(BackendArgs.size() - 1, |
David Blaikie | 6bd17d2 | 2012-02-07 19:36:38 +0000 | [diff] [blame] | 440 | BackendArgs.data()); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 441 | |
| 442 | std::string FeaturesStr; |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 443 | if (!TargetOpts.Features.empty()) { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 444 | SubtargetFeatures Features; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 445 | for (std::vector<std::string>::const_iterator |
| 446 | it = TargetOpts.Features.begin(), |
| 447 | ie = TargetOpts.Features.end(); it != ie; ++it) |
| 448 | Features.AddFeature(*it); |
| 449 | FeaturesStr = Features.getString(); |
| 450 | } |
Evan Cheng | 2860e30 | 2011-07-19 06:37:41 +0000 | [diff] [blame] | 451 | |
| 452 | llvm::Reloc::Model RM = llvm::Reloc::Default; |
| 453 | if (CodeGenOpts.RelocationModel == "static") { |
| 454 | RM = llvm::Reloc::Static; |
| 455 | } else if (CodeGenOpts.RelocationModel == "pic") { |
| 456 | RM = llvm::Reloc::PIC_; |
| 457 | } else { |
| 458 | assert(CodeGenOpts.RelocationModel == "dynamic-no-pic" && |
| 459 | "Invalid PIC model!"); |
| 460 | RM = llvm::Reloc::DynamicNoPIC; |
| 461 | } |
| 462 | |
Evan Cheng | 9254bf7 | 2011-11-16 08:38:55 +0000 | [diff] [blame] | 463 | CodeGenOpt::Level OptLevel = CodeGenOpt::Default; |
| 464 | switch (CodeGenOpts.OptimizationLevel) { |
| 465 | default: break; |
| 466 | case 0: OptLevel = CodeGenOpt::None; break; |
| 467 | case 3: OptLevel = CodeGenOpt::Aggressive; break; |
| 468 | } |
| 469 | |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 470 | llvm::TargetOptions Options; |
| 471 | |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 472 | Options.ThreadModel = |
| 473 | llvm::StringSwitch<llvm::ThreadModel::Model>(CodeGenOpts.ThreadModel) |
| 474 | .Case("posix", llvm::ThreadModel::POSIX) |
| 475 | .Case("single", llvm::ThreadModel::Single); |
| 476 | |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 477 | if (CodeGenOpts.DisableIntegratedAS) |
| 478 | Options.DisableIntegratedAS = true; |
| 479 | |
| 480 | if (CodeGenOpts.CompressDebugSections) |
| 481 | Options.CompressDebugSections = true; |
| 482 | |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 483 | // Set frame pointer elimination mode. |
| 484 | if (!CodeGenOpts.DisableFPElim) { |
| 485 | Options.NoFramePointerElim = false; |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 486 | } else if (CodeGenOpts.OmitLeafFramePointer) { |
| 487 | Options.NoFramePointerElim = false; |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 488 | } else { |
| 489 | Options.NoFramePointerElim = true; |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 490 | } |
| 491 | |
Rafael Espindola | 8af669f | 2012-06-19 01:26:10 +0000 | [diff] [blame] | 492 | if (CodeGenOpts.UseInitArray) |
| 493 | Options.UseInitArray = true; |
| 494 | |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 495 | // Set float ABI type. |
| 496 | if (CodeGenOpts.FloatABI == "soft" || CodeGenOpts.FloatABI == "softfp") |
| 497 | Options.FloatABIType = llvm::FloatABI::Soft; |
| 498 | else if (CodeGenOpts.FloatABI == "hard") |
| 499 | Options.FloatABIType = llvm::FloatABI::Hard; |
| 500 | else { |
| 501 | assert(CodeGenOpts.FloatABI.empty() && "Invalid float abi!"); |
| 502 | Options.FloatABIType = llvm::FloatABI::Default; |
| 503 | } |
| 504 | |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 505 | // Set FP fusion mode. |
Lang Hames | 931c083 | 2012-11-15 07:51:26 +0000 | [diff] [blame] | 506 | switch (CodeGenOpts.getFPContractMode()) { |
| 507 | case CodeGenOptions::FPC_Off: |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 508 | Options.AllowFPOpFusion = llvm::FPOpFusion::Strict; |
| 509 | break; |
Lang Hames | 931c083 | 2012-11-15 07:51:26 +0000 | [diff] [blame] | 510 | case CodeGenOptions::FPC_On: |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 511 | Options.AllowFPOpFusion = llvm::FPOpFusion::Standard; |
| 512 | break; |
Lang Hames | 931c083 | 2012-11-15 07:51:26 +0000 | [diff] [blame] | 513 | case CodeGenOptions::FPC_Fast: |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 514 | Options.AllowFPOpFusion = llvm::FPOpFusion::Fast; |
Nadav Rotem | 25030c4 | 2012-10-19 04:15:32 +0000 | [diff] [blame] | 515 | break; |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 516 | } |
| 517 | |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 518 | Options.LessPreciseFPMADOption = CodeGenOpts.LessPreciseFPMAD; |
| 519 | Options.NoInfsFPMath = CodeGenOpts.NoInfsFPMath; |
| 520 | Options.NoNaNsFPMath = CodeGenOpts.NoNaNsFPMath; |
| 521 | Options.NoZerosInBSS = CodeGenOpts.NoZeroInitializedInBSS; |
| 522 | Options.UnsafeFPMath = CodeGenOpts.UnsafeFPMath; |
| 523 | Options.UseSoftFloat = CodeGenOpts.SoftFloat; |
Nick Lewycky | 4e785c9 | 2011-12-06 03:33:03 +0000 | [diff] [blame] | 524 | Options.StackAlignmentOverride = CodeGenOpts.StackAlignment; |
Nick Lewycky | 1db772b | 2012-01-23 08:29:12 +0000 | [diff] [blame] | 525 | Options.DisableTailCalls = CodeGenOpts.DisableTailCalls; |
Bob Wilson | 71fd6cc | 2012-02-03 06:27:22 +0000 | [diff] [blame] | 526 | Options.TrapFuncName = CodeGenOpts.TrapFuncName; |
Chandler Carruth | 5081de5 | 2012-04-08 21:09:51 +0000 | [diff] [blame] | 527 | Options.PositionIndependentExecutable = LangOpts.PIELevel != 0; |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 528 | Options.FunctionSections = CodeGenOpts.FunctionSections; |
| 529 | Options.DataSections = CodeGenOpts.DataSections; |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 530 | Options.UniqueSectionNames = CodeGenOpts.UniqueSectionNames; |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 531 | |
| 532 | Options.MCOptions.MCRelaxAll = CodeGenOpts.RelaxAll; |
| 533 | Options.MCOptions.MCSaveTempLabels = CodeGenOpts.SaveTempLabels; |
| 534 | Options.MCOptions.MCUseDwarfDirectory = !CodeGenOpts.NoDwarfDirectoryAsm; |
| 535 | Options.MCOptions.MCNoExecStack = CodeGenOpts.NoExecStack; |
Stephen Hines | 176edba | 2014-12-01 14:53:08 -0800 | [diff] [blame] | 536 | Options.MCOptions.MCFatalWarnings = CodeGenOpts.FatalWarnings; |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 537 | Options.MCOptions.AsmVerbose = CodeGenOpts.AsmVerbose; |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 538 | Options.MCOptions.ABIName = TargetOpts.ABI; |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 539 | |
Evan Cheng | 368691e | 2011-06-30 02:06:32 +0000 | [diff] [blame] | 540 | TargetMachine *TM = TheTarget->createTargetMachine(Triple, TargetOpts.CPU, |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 541 | FeaturesStr, Options, |
| 542 | RM, CM, OptLevel); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 543 | |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 544 | return TM; |
| 545 | } |
| 546 | |
| 547 | bool EmitAssemblyHelper::AddEmitPasses(BackendAction Action, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 548 | formatted_raw_ostream &OS) { |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 549 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 550 | // Create the code generator passes. |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 551 | legacy::PassManager *PM = getCodeGenPasses(); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 552 | |
Chad Rosier | 3f3335d | 2012-02-29 20:14:59 +0000 | [diff] [blame] | 553 | // Add LibraryInfo. |
Daniel Dunbar | cbbe2c0 | 2012-10-19 20:10:10 +0000 | [diff] [blame] | 554 | llvm::Triple TargetTriple(TheModule->getTargetTriple()); |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 555 | std::unique_ptr<TargetLibraryInfoImpl> TLII( |
| 556 | createTLII(TargetTriple, CodeGenOpts)); |
| 557 | PM->add(new TargetLibraryInfoWrapperPass(*TLII)); |
Nadav Rotem | 25030c4 | 2012-10-19 04:15:32 +0000 | [diff] [blame] | 558 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 559 | // Normal mode, emit a .s or .o file by running the code generator. Note, |
| 560 | // this also adds codegenerator level optimization passes. |
| 561 | TargetMachine::CodeGenFileType CGFT = TargetMachine::CGFT_AssemblyFile; |
| 562 | if (Action == Backend_EmitObj) |
| 563 | CGFT = TargetMachine::CGFT_ObjectFile; |
| 564 | else if (Action == Backend_EmitMCNull) |
| 565 | CGFT = TargetMachine::CGFT_Null; |
| 566 | else |
| 567 | assert(Action == Backend_EmitAssembly && "Invalid action!"); |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 568 | |
| 569 | // Add ObjC ARC final-cleanup optimizations. This is done as part of the |
| 570 | // "codegen" passes so that it isn't run multiple times when there is |
| 571 | // inlining happening. |
Dan Gohman | 465a899 | 2012-04-04 21:04:56 +0000 | [diff] [blame] | 572 | if (LangOpts.ObjCAutoRefCount && |
| 573 | CodeGenOpts.OptimizationLevel > 0) |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 574 | PM->add(createObjCARCContractPass()); |
| 575 | |
Evan Cheng | 9254bf7 | 2011-11-16 08:38:55 +0000 | [diff] [blame] | 576 | if (TM->addPassesToEmitFile(*PM, OS, CGFT, |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 577 | /*DisableVerify=*/!CodeGenOpts.VerifyModule)) { |
| 578 | Diags.Report(diag::err_fe_unable_to_interface_with_target); |
| 579 | return false; |
| 580 | } |
| 581 | |
| 582 | return true; |
| 583 | } |
| 584 | |
| 585 | void EmitAssemblyHelper::EmitAssembly(BackendAction Action, raw_ostream *OS) { |
Stephen Hines | 6bcf27b | 2014-05-29 04:14:42 -0700 | [diff] [blame] | 586 | TimeRegion Region(llvm::TimePassesIsEnabled ? &CodeGenerationTime : nullptr); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 587 | llvm::formatted_raw_ostream FormattedOS; |
| 588 | |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 589 | bool UsesCodeGen = (Action != Backend_EmitNothing && |
| 590 | Action != Backend_EmitBC && |
| 591 | Action != Backend_EmitLL); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 592 | if (!TM) |
| 593 | TM.reset(CreateTargetMachine(UsesCodeGen)); |
| 594 | |
Chad Rosier | a03fc6e | 2013-03-27 00:14:35 +0000 | [diff] [blame] | 595 | if (UsesCodeGen && !TM) return; |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 596 | CreatePasses(); |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 597 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 598 | switch (Action) { |
| 599 | case Backend_EmitNothing: |
| 600 | break; |
| 601 | |
| 602 | case Backend_EmitBC: |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 603 | getPerModulePasses()->add(createBitcodeWriterPass(*OS)); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 604 | break; |
| 605 | |
| 606 | case Backend_EmitLL: |
| 607 | FormattedOS.setStream(*OS, formatted_raw_ostream::PRESERVE_STREAM); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 608 | getPerModulePasses()->add(createPrintModulePass(FormattedOS)); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 609 | break; |
| 610 | |
| 611 | default: |
| 612 | FormattedOS.setStream(*OS, formatted_raw_ostream::PRESERVE_STREAM); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 613 | if (!AddEmitPasses(Action, FormattedOS)) |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 614 | return; |
| 615 | } |
| 616 | |
Andrew Trick | 92b5d94 | 2011-04-05 18:56:55 +0000 | [diff] [blame] | 617 | // Before executing passes, print the final values of the LLVM options. |
| 618 | cl::PrintOptionValues(); |
| 619 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 620 | // Run passes. For now we do all passes at once, but eventually we |
| 621 | // would like to have the option of streaming code generation. |
| 622 | |
| 623 | if (PerFunctionPasses) { |
| 624 | PrettyStackTraceString CrashInfo("Per-function optimization"); |
| 625 | |
| 626 | PerFunctionPasses->doInitialization(); |
| 627 | for (Module::iterator I = TheModule->begin(), |
| 628 | E = TheModule->end(); I != E; ++I) |
| 629 | if (!I->isDeclaration()) |
| 630 | PerFunctionPasses->run(*I); |
| 631 | PerFunctionPasses->doFinalization(); |
| 632 | } |
| 633 | |
| 634 | if (PerModulePasses) { |
| 635 | PrettyStackTraceString CrashInfo("Per-module optimization passes"); |
| 636 | PerModulePasses->run(*TheModule); |
| 637 | } |
| 638 | |
| 639 | if (CodeGenPasses) { |
| 640 | PrettyStackTraceString CrashInfo("Code generation"); |
Daniel Dunbar | db2f237 | 2010-09-17 07:35:16 +0000 | [diff] [blame] | 641 | CodeGenPasses->run(*TheModule); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 642 | } |
| 643 | } |
| 644 | |
David Blaikie | d6471f7 | 2011-09-25 23:23:43 +0000 | [diff] [blame] | 645 | void clang::EmitBackendOutput(DiagnosticsEngine &Diags, |
| 646 | const CodeGenOptions &CGOpts, |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 647 | const clang::TargetOptions &TOpts, |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 648 | const LangOptions &LOpts, StringRef TDesc, |
| 649 | Module *M, BackendAction Action, |
| 650 | raw_ostream *OS) { |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 651 | EmitAssemblyHelper AsmHelper(Diags, CGOpts, TOpts, LOpts, M); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 652 | |
| 653 | AsmHelper.EmitAssembly(Action, OS); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 654 | |
| 655 | // If an optional clang TargetInfo description string was passed in, use it to |
| 656 | // verify the LLVM TargetMachine's DataLayout. |
| 657 | if (AsmHelper.TM && !TDesc.empty()) { |
Stephen Hines | 0e2c34f | 2015-03-23 12:09:02 -0700 | [diff] [blame^] | 658 | std::string DLDesc = |
| 659 | AsmHelper.TM->getDataLayout()->getStringRepresentation(); |
Stephen Hines | 651f13c | 2014-04-23 16:59:28 -0700 | [diff] [blame] | 660 | if (DLDesc != TDesc) { |
| 661 | unsigned DiagID = Diags.getCustomDiagID( |
| 662 | DiagnosticsEngine::Error, "backend data layout '%0' does not match " |
| 663 | "expected target description '%1'"); |
| 664 | Diags.Report(DiagID) << DLDesc << TDesc; |
| 665 | } |
| 666 | } |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 667 | } |