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" |
Rafael Espindola | cf565c5 | 2011-08-02 21:51:02 +0000 | [diff] [blame] | 16 | #include "llvm/Analysis/Verifier.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 17 | #include "llvm/Assembly/PrintModulePass.h" |
| 18 | #include "llvm/Bitcode/ReaderWriter.h" |
| 19 | #include "llvm/CodeGen/RegAllocRegistry.h" |
| 20 | #include "llvm/CodeGen/SchedulerRegistry.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 21 | #include "llvm/DataLayout.h" |
Evan Cheng | 693769c | 2011-06-29 01:14:32 +0000 | [diff] [blame] | 22 | #include "llvm/MC/SubtargetFeature.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 23 | #include "llvm/Module.h" |
| 24 | #include "llvm/PassManager.h" |
NAKAMURA Takumi | 007c44c | 2012-12-11 05:53:24 +0000 | [diff] [blame] | 25 | #include "llvm/TargetTransformInfo.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 26 | #include "llvm/Support/CommandLine.h" |
| 27 | #include "llvm/Support/FormattedStream.h" |
| 28 | #include "llvm/Support/PrettyStackTrace.h" |
Evan Cheng | a6b4045 | 2011-08-24 18:09:14 +0000 | [diff] [blame] | 29 | #include "llvm/Support/TargetRegistry.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 30 | #include "llvm/Support/Timer.h" |
| 31 | #include "llvm/Support/raw_ostream.h" |
Rafael Espindola | cf565c5 | 2011-08-02 21:51:02 +0000 | [diff] [blame] | 32 | #include "llvm/Target/TargetLibraryInfo.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 33 | #include "llvm/Target/TargetMachine.h" |
| 34 | #include "llvm/Target/TargetOptions.h" |
Rafael Espindola | cf565c5 | 2011-08-02 21:51:02 +0000 | [diff] [blame] | 35 | #include "llvm/Transforms/IPO.h" |
| 36 | #include "llvm/Transforms/IPO/PassManagerBuilder.h" |
Chandler Carruth | 55fc873 | 2012-12-04 09:13:33 +0000 | [diff] [blame] | 37 | #include "llvm/Transforms/Instrumentation.h" |
Rafael Espindola | cf565c5 | 2011-08-02 21:51:02 +0000 | [diff] [blame] | 38 | #include "llvm/Transforms/Scalar.h" |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 39 | using namespace clang; |
| 40 | using namespace llvm; |
| 41 | |
| 42 | namespace { |
| 43 | |
| 44 | class EmitAssemblyHelper { |
David Blaikie | d6471f7 | 2011-09-25 23:23:43 +0000 | [diff] [blame] | 45 | DiagnosticsEngine &Diags; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 46 | const CodeGenOptions &CodeGenOpts; |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 47 | const clang::TargetOptions &TargetOpts; |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 48 | const LangOptions &LangOpts; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 49 | Module *TheModule; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 50 | |
| 51 | Timer CodeGenerationTime; |
| 52 | |
Daniel Dunbar | db2f237 | 2010-09-17 07:35:16 +0000 | [diff] [blame] | 53 | mutable PassManager *CodeGenPasses; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 54 | mutable PassManager *PerModulePasses; |
| 55 | mutable FunctionPassManager *PerFunctionPasses; |
| 56 | |
| 57 | private: |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 58 | PassManager *getCodeGenPasses(TargetMachine *TM) const { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 59 | if (!CodeGenPasses) { |
Daniel Dunbar | db2f237 | 2010-09-17 07:35:16 +0000 | [diff] [blame] | 60 | CodeGenPasses = new PassManager(); |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 61 | CodeGenPasses->add(new DataLayout(TheModule)); |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 62 | // Add TargetTransformInfo. |
| 63 | if (TM) { |
| 64 | TargetTransformInfo *TTI = |
| 65 | new TargetTransformInfo(TM->getScalarTargetTransformInfo(), |
| 66 | TM->getVectorTargetTransformInfo()); |
| 67 | CodeGenPasses->add(TTI); |
| 68 | } |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 69 | } |
| 70 | return CodeGenPasses; |
| 71 | } |
| 72 | |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 73 | PassManager *getPerModulePasses(TargetMachine *TM) const { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 74 | if (!PerModulePasses) { |
| 75 | PerModulePasses = new PassManager(); |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 76 | PerModulePasses->add(new DataLayout(TheModule)); |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 77 | if (TM) { |
| 78 | TargetTransformInfo *TTI = |
| 79 | new TargetTransformInfo(TM->getScalarTargetTransformInfo(), |
| 80 | TM->getVectorTargetTransformInfo()); |
| 81 | PerModulePasses->add(TTI); |
| 82 | } |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 83 | } |
| 84 | return PerModulePasses; |
| 85 | } |
| 86 | |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 87 | FunctionPassManager *getPerFunctionPasses(TargetMachine *TM) const { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 88 | if (!PerFunctionPasses) { |
| 89 | PerFunctionPasses = new FunctionPassManager(TheModule); |
Micah Villmow | 25a6a84 | 2012-10-08 16:25:52 +0000 | [diff] [blame] | 90 | PerFunctionPasses->add(new DataLayout(TheModule)); |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 91 | if (TM) { |
| 92 | TargetTransformInfo *TTI = |
| 93 | new TargetTransformInfo(TM->getScalarTargetTransformInfo(), |
| 94 | TM->getVectorTargetTransformInfo()); |
| 95 | PerFunctionPasses->add(TTI); |
| 96 | } |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 97 | } |
| 98 | return PerFunctionPasses; |
| 99 | } |
| 100 | |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 101 | |
| 102 | void CreatePasses(TargetMachine *TM); |
| 103 | |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 104 | /// CreateTargetMachine - Generates the TargetMachine. |
| 105 | /// Returns Null if it is unable to create the target machine. |
| 106 | /// Some of our clang tests specify triples which are not built |
| 107 | /// into clang. This is okay because these tests check the generated |
| 108 | /// IR, and they require DataLayout which depends on the triple. |
| 109 | /// In this case, we allow this method to fail and not report an error. |
| 110 | /// When MustCreateTM is used, we print an error if we are unable to load |
| 111 | /// the requested target. |
| 112 | TargetMachine *CreateTargetMachine(bool MustCreateTM); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 113 | |
| 114 | /// AddEmitPasses - Add passes necessary to emit assembly or LLVM IR. |
| 115 | /// |
| 116 | /// \return True on success. |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 117 | bool AddEmitPasses(BackendAction Action, formatted_raw_ostream &OS, |
| 118 | TargetMachine *TM); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 119 | |
| 120 | public: |
David Blaikie | d6471f7 | 2011-09-25 23:23:43 +0000 | [diff] [blame] | 121 | EmitAssemblyHelper(DiagnosticsEngine &_Diags, |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 122 | const CodeGenOptions &CGOpts, |
| 123 | const clang::TargetOptions &TOpts, |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 124 | const LangOptions &LOpts, |
Daniel Dunbar | 05a7f3d | 2010-06-07 23:21:04 +0000 | [diff] [blame] | 125 | Module *M) |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 126 | : Diags(_Diags), CodeGenOpts(CGOpts), TargetOpts(TOpts), LangOpts(LOpts), |
Daniel Dunbar | 05a7f3d | 2010-06-07 23:21:04 +0000 | [diff] [blame] | 127 | TheModule(M), CodeGenerationTime("Code Generation Time"), |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 128 | CodeGenPasses(0), PerModulePasses(0), PerFunctionPasses(0) {} |
| 129 | |
| 130 | ~EmitAssemblyHelper() { |
| 131 | delete CodeGenPasses; |
| 132 | delete PerModulePasses; |
| 133 | delete PerFunctionPasses; |
| 134 | } |
| 135 | |
| 136 | void EmitAssembly(BackendAction Action, raw_ostream *OS); |
| 137 | }; |
| 138 | |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 139 | // We need this wrapper to access LangOpts from extension functions that |
| 140 | // we add to the PassManagerBuilder. |
| 141 | class PassManagerBuilderWrapper : public PassManagerBuilder { |
| 142 | public: |
Alexey Samsonov | 91ecfa6 | 2012-12-03 19:12:58 +0000 | [diff] [blame] | 143 | PassManagerBuilderWrapper(const CodeGenOptions &CGOpts, |
| 144 | const LangOptions &LangOpts) |
| 145 | : PassManagerBuilder(), CGOpts(CGOpts), LangOpts(LangOpts) {} |
| 146 | const CodeGenOptions &getCGOpts() const { return CGOpts; } |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 147 | const LangOptions &getLangOpts() const { return LangOpts; } |
| 148 | private: |
Alexey Samsonov | 91ecfa6 | 2012-12-03 19:12:58 +0000 | [diff] [blame] | 149 | const CodeGenOptions &CGOpts; |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 150 | const LangOptions &LangOpts; |
| 151 | }; |
| 152 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 153 | } |
| 154 | |
Dan Gohman | a8398ea | 2012-01-17 20:54:51 +0000 | [diff] [blame] | 155 | static void addObjCARCAPElimPass(const PassManagerBuilder &Builder, PassManagerBase &PM) { |
| 156 | if (Builder.OptLevel > 0) |
| 157 | PM.add(createObjCARCAPElimPass()); |
| 158 | } |
| 159 | |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 160 | static void addObjCARCExpandPass(const PassManagerBuilder &Builder, PassManagerBase &PM) { |
| 161 | if (Builder.OptLevel > 0) |
| 162 | PM.add(createObjCARCExpandPass()); |
| 163 | } |
| 164 | |
| 165 | static void addObjCARCOptPass(const PassManagerBuilder &Builder, PassManagerBase &PM) { |
| 166 | if (Builder.OptLevel > 0) |
| 167 | PM.add(createObjCARCOptPass()); |
| 168 | } |
| 169 | |
Nuno Lopes | def1849 | 2012-05-22 17:19:45 +0000 | [diff] [blame] | 170 | static void addBoundsCheckingPass(const PassManagerBuilder &Builder, |
| 171 | PassManagerBase &PM) { |
Joey Gouly | 8548908 | 2012-11-23 10:39:49 +0000 | [diff] [blame] | 172 | PM.add(createBoundsCheckingPass()); |
Nuno Lopes | def1849 | 2012-05-22 17:19:45 +0000 | [diff] [blame] | 173 | } |
| 174 | |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 175 | static void addAddressSanitizerPasses(const PassManagerBuilder &Builder, |
| 176 | PassManagerBase &PM) { |
| 177 | const PassManagerBuilderWrapper &BuilderWrapper = |
| 178 | static_cast<const PassManagerBuilderWrapper&>(Builder); |
Alexey Samsonov | 91ecfa6 | 2012-12-03 19:12:58 +0000 | [diff] [blame] | 179 | const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts(); |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 180 | const LangOptions &LangOpts = BuilderWrapper.getLangOpts(); |
| 181 | PM.add(createAddressSanitizerFunctionPass(LangOpts.SanitizeInitOrder, |
| 182 | LangOpts.SanitizeUseAfterReturn, |
Alexey Samsonov | 91ecfa6 | 2012-12-03 19:12:58 +0000 | [diff] [blame] | 183 | LangOpts.SanitizeUseAfterScope, |
| 184 | CGOpts.SanitizerBlacklistFile)); |
| 185 | PM.add(createAddressSanitizerModulePass(LangOpts.SanitizeInitOrder, |
| 186 | CGOpts.SanitizerBlacklistFile)); |
Kostya Serebryany | 1b4eca6 | 2011-11-16 17:34:26 +0000 | [diff] [blame] | 187 | } |
| 188 | |
Evgeniy Stepanov | 09ccf39 | 2012-12-03 13:20:43 +0000 | [diff] [blame] | 189 | static void addMemorySanitizerPass(const PassManagerBuilder &Builder, |
| 190 | PassManagerBase &PM) { |
Evgeniy Stepanov | 34ef11b | 2012-12-24 08:42:34 +0000 | [diff] [blame^] | 191 | const PassManagerBuilderWrapper &BuilderWrapper = |
| 192 | static_cast<const PassManagerBuilderWrapper&>(Builder); |
| 193 | const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts(); |
| 194 | PM.add(createMemorySanitizerPass(CGOpts.MemorySanitizerTrackOrigins)); |
Evgeniy Stepanov | 09ccf39 | 2012-12-03 13:20:43 +0000 | [diff] [blame] | 195 | } |
| 196 | |
Kostya Serebryany | 3c93122 | 2012-03-01 22:27:08 +0000 | [diff] [blame] | 197 | static void addThreadSanitizerPass(const PassManagerBuilder &Builder, |
| 198 | PassManagerBase &PM) { |
| 199 | PM.add(createThreadSanitizerPass()); |
| 200 | } |
| 201 | |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 202 | void EmitAssemblyHelper::CreatePasses(TargetMachine *TM) { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 203 | unsigned OptLevel = CodeGenOpts.OptimizationLevel; |
Douglas Gregor | 4cdad31 | 2012-10-23 20:05:01 +0000 | [diff] [blame] | 204 | CodeGenOptions::InliningMethod Inlining = CodeGenOpts.getInlining(); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 205 | |
| 206 | // Handle disabling of LLVM optimization, where we want to preserve the |
| 207 | // internal module before any optimization. |
| 208 | if (CodeGenOpts.DisableLLVMOpts) { |
| 209 | OptLevel = 0; |
| 210 | Inlining = CodeGenOpts.NoInlining; |
| 211 | } |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 212 | |
Alexey Samsonov | 91ecfa6 | 2012-12-03 19:12:58 +0000 | [diff] [blame] | 213 | PassManagerBuilderWrapper PMBuilder(CodeGenOpts, LangOpts); |
Chris Lattner | 9ca02e5 | 2011-05-21 23:50:44 +0000 | [diff] [blame] | 214 | PMBuilder.OptLevel = OptLevel; |
| 215 | PMBuilder.SizeLevel = CodeGenOpts.OptimizeSize; |
Andrew Trick | 6445d62 | 2011-04-05 18:49:32 +0000 | [diff] [blame] | 216 | |
Chris Lattner | 9ca02e5 | 2011-05-21 23:50:44 +0000 | [diff] [blame] | 217 | PMBuilder.DisableSimplifyLibCalls = !CodeGenOpts.SimplifyLibCalls; |
| 218 | PMBuilder.DisableUnitAtATime = !CodeGenOpts.UnitAtATime; |
| 219 | PMBuilder.DisableUnrollLoops = !CodeGenOpts.UnrollLoops; |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 220 | |
| 221 | // In ObjC ARC mode, add the main ARC optimization passes. |
| 222 | if (LangOpts.ObjCAutoRefCount) { |
| 223 | PMBuilder.addExtension(PassManagerBuilder::EP_EarlyAsPossible, |
| 224 | addObjCARCExpandPass); |
Dan Gohman | a8398ea | 2012-01-17 20:54:51 +0000 | [diff] [blame] | 225 | PMBuilder.addExtension(PassManagerBuilder::EP_ModuleOptimizerEarly, |
| 226 | addObjCARCAPElimPass); |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 227 | PMBuilder.addExtension(PassManagerBuilder::EP_ScalarOptimizerLate, |
| 228 | addObjCARCOptPass); |
| 229 | } |
Kostya Serebryany | 1b4eca6 | 2011-11-16 17:34:26 +0000 | [diff] [blame] | 230 | |
Joey Gouly | 8548908 | 2012-11-23 10:39:49 +0000 | [diff] [blame] | 231 | if (LangOpts.SanitizeBounds) { |
Nuno Lopes | def1849 | 2012-05-22 17:19:45 +0000 | [diff] [blame] | 232 | PMBuilder.addExtension(PassManagerBuilder::EP_ScalarOptimizerLate, |
| 233 | addBoundsCheckingPass); |
| 234 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
| 235 | addBoundsCheckingPass); |
| 236 | } |
| 237 | |
Richard Smith | ca1b62a | 2012-11-05 21:48:12 +0000 | [diff] [blame] | 238 | if (LangOpts.SanitizeAddress) { |
Kostya Serebryany | ba1f040 | 2012-10-15 14:22:56 +0000 | [diff] [blame] | 239 | PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 240 | addAddressSanitizerPasses); |
Kostya Serebryany | e5dd2ea | 2011-11-30 22:20:21 +0000 | [diff] [blame] | 241 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
Alexey Samsonov | 4d1a6e4 | 2012-11-29 22:36:21 +0000 | [diff] [blame] | 242 | addAddressSanitizerPasses); |
Kostya Serebryany | 1b4eca6 | 2011-11-16 17:34:26 +0000 | [diff] [blame] | 243 | } |
Kostya Serebryany | 3c93122 | 2012-03-01 22:27:08 +0000 | [diff] [blame] | 244 | |
Evgeniy Stepanov | 09ccf39 | 2012-12-03 13:20:43 +0000 | [diff] [blame] | 245 | if (LangOpts.SanitizeMemory) { |
| 246 | PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, |
| 247 | addMemorySanitizerPass); |
| 248 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
| 249 | addMemorySanitizerPass); |
| 250 | } |
| 251 | |
Richard Smith | ca1b62a | 2012-11-05 21:48:12 +0000 | [diff] [blame] | 252 | if (LangOpts.SanitizeThread) { |
Kostya Serebryany | e78ec3e | 2012-03-23 23:25:23 +0000 | [diff] [blame] | 253 | PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, |
Kostya Serebryany | 3c93122 | 2012-03-01 22:27:08 +0000 | [diff] [blame] | 254 | addThreadSanitizerPass); |
| 255 | PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, |
| 256 | addThreadSanitizerPass); |
| 257 | } |
| 258 | |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 259 | // Figure out TargetLibraryInfo. |
Bill Wendling | 3621b31 | 2011-05-17 23:06:23 +0000 | [diff] [blame] | 260 | Triple TargetTriple(TheModule->getTargetTriple()); |
Chris Lattner | 9ca02e5 | 2011-05-21 23:50:44 +0000 | [diff] [blame] | 261 | PMBuilder.LibraryInfo = new TargetLibraryInfo(TargetTriple); |
Chris Lattner | 98ec3f7 | 2011-02-18 22:34:47 +0000 | [diff] [blame] | 262 | if (!CodeGenOpts.SimplifyLibCalls) |
Chris Lattner | 9ca02e5 | 2011-05-21 23:50:44 +0000 | [diff] [blame] | 263 | PMBuilder.LibraryInfo->disableAllFunctions(); |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 264 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 265 | switch (Inlining) { |
| 266 | case CodeGenOptions::NoInlining: break; |
| 267 | case CodeGenOptions::NormalInlining: { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 268 | // FIXME: Derive these constants in a principled fashion. |
| 269 | unsigned Threshold = 225; |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 270 | if (CodeGenOpts.OptimizeSize == 1) // -Os |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 271 | Threshold = 75; |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 272 | else if (CodeGenOpts.OptimizeSize == 2) // -Oz |
Bob Wilson | a0fa203 | 2011-04-29 22:49:50 +0000 | [diff] [blame] | 273 | Threshold = 25; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 274 | else if (OptLevel > 2) |
| 275 | Threshold = 275; |
Chris Lattner | 9ca02e5 | 2011-05-21 23:50:44 +0000 | [diff] [blame] | 276 | PMBuilder.Inliner = createFunctionInliningPass(Threshold); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 277 | break; |
| 278 | } |
| 279 | case CodeGenOptions::OnlyAlwaysInlining: |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 280 | // Respect always_inline. |
Chad Rosier | 9875962 | 2012-02-25 02:56:13 +0000 | [diff] [blame] | 281 | if (OptLevel == 0) |
| 282 | // Do not insert lifetime intrinsics at -O0. |
| 283 | PMBuilder.Inliner = createAlwaysInlinerPass(false); |
| 284 | else |
| 285 | PMBuilder.Inliner = createAlwaysInlinerPass(); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 286 | break; |
| 287 | } |
| 288 | |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 289 | // Set up the per-function pass manager. |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 290 | FunctionPassManager *FPM = getPerFunctionPasses(TM); |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 291 | if (CodeGenOpts.VerifyModule) |
| 292 | FPM->add(createVerifierPass()); |
| 293 | PMBuilder.populateFunctionPassManager(*FPM); |
Andrew Trick | 6445d62 | 2011-04-05 18:49:32 +0000 | [diff] [blame] | 294 | |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 295 | // Set up the per-module pass manager. |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 296 | PassManager *MPM = getPerModulePasses(TM); |
Chris Lattner | df61976 | 2011-02-18 22:20:38 +0000 | [diff] [blame] | 297 | |
Nick Lewycky | e8ba8d7 | 2011-04-21 23:44:07 +0000 | [diff] [blame] | 298 | if (CodeGenOpts.EmitGcovArcs || CodeGenOpts.EmitGcovNotes) { |
| 299 | MPM->add(createGCOVProfilerPass(CodeGenOpts.EmitGcovNotes, |
Bill Wendling | 3621b31 | 2011-05-17 23:06:23 +0000 | [diff] [blame] | 300 | CodeGenOpts.EmitGcovArcs, |
Bill Wendling | 44f4a2d | 2012-12-10 19:47:53 +0000 | [diff] [blame] | 301 | TargetTriple.isMacOSX(), |
| 302 | false, |
| 303 | CodeGenOpts.DisableRedZone)); |
Bill Wendling | 3621b31 | 2011-05-17 23:06:23 +0000 | [diff] [blame] | 304 | |
Douglas Gregor | 4cdad31 | 2012-10-23 20:05:01 +0000 | [diff] [blame] | 305 | if (CodeGenOpts.getDebugInfo() == CodeGenOptions::NoDebugInfo) |
Nick Lewycky | e8ba8d7 | 2011-04-21 23:44:07 +0000 | [diff] [blame] | 306 | MPM->add(createStripSymbolsPass(true)); |
| 307 | } |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 308 | |
Chris Lattner | 33c09d5 | 2011-05-21 20:40:11 +0000 | [diff] [blame] | 309 | PMBuilder.populateModulePassManager(*MPM); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 310 | } |
| 311 | |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 312 | TargetMachine *EmitAssemblyHelper::CreateTargetMachine(bool MustCreateTM) { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 313 | // Create the TargetMachine for generating code. |
| 314 | std::string Error; |
| 315 | std::string Triple = TheModule->getTargetTriple(); |
| 316 | const llvm::Target *TheTarget = TargetRegistry::lookupTarget(Triple, Error); |
| 317 | if (!TheTarget) { |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 318 | if (MustCreateTM) |
| 319 | Diags.Report(diag::err_fe_unable_to_create_target) << Error; |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 320 | return 0; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 321 | } |
| 322 | |
| 323 | // FIXME: Expose these capabilities via actual APIs!!!! Aside from just |
| 324 | // being gross, this is also totally broken if we ever care about |
| 325 | // concurrency. |
Daniel Dunbar | 1ad6648 | 2010-07-01 01:31:45 +0000 | [diff] [blame] | 326 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 327 | TargetMachine::setAsmVerbosityDefault(CodeGenOpts.AsmVerbose); |
| 328 | |
| 329 | TargetMachine::setFunctionSections(CodeGenOpts.FunctionSections); |
| 330 | TargetMachine::setDataSections (CodeGenOpts.DataSections); |
| 331 | |
| 332 | // FIXME: Parse this earlier. |
Benjamin Kramer | 77577ce | 2011-07-20 14:43:06 +0000 | [diff] [blame] | 333 | llvm::CodeModel::Model CM; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 334 | if (CodeGenOpts.CodeModel == "small") { |
Benjamin Kramer | 77577ce | 2011-07-20 14:43:06 +0000 | [diff] [blame] | 335 | CM = llvm::CodeModel::Small; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 336 | } else if (CodeGenOpts.CodeModel == "kernel") { |
Benjamin Kramer | 77577ce | 2011-07-20 14:43:06 +0000 | [diff] [blame] | 337 | CM = llvm::CodeModel::Kernel; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 338 | } else if (CodeGenOpts.CodeModel == "medium") { |
Benjamin Kramer | 77577ce | 2011-07-20 14:43:06 +0000 | [diff] [blame] | 339 | CM = llvm::CodeModel::Medium; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 340 | } else if (CodeGenOpts.CodeModel == "large") { |
Benjamin Kramer | 77577ce | 2011-07-20 14:43:06 +0000 | [diff] [blame] | 341 | CM = llvm::CodeModel::Large; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 342 | } else { |
| 343 | assert(CodeGenOpts.CodeModel.empty() && "Invalid code model!"); |
Benjamin Kramer | 77577ce | 2011-07-20 14:43:06 +0000 | [diff] [blame] | 344 | CM = llvm::CodeModel::Default; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 345 | } |
| 346 | |
David Blaikie | 6bd17d2 | 2012-02-07 19:36:38 +0000 | [diff] [blame] | 347 | SmallVector<const char *, 16> BackendArgs; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 348 | BackendArgs.push_back("clang"); // Fake program name. |
| 349 | if (!CodeGenOpts.DebugPass.empty()) { |
| 350 | BackendArgs.push_back("-debug-pass"); |
| 351 | BackendArgs.push_back(CodeGenOpts.DebugPass.c_str()); |
| 352 | } |
| 353 | if (!CodeGenOpts.LimitFloatPrecision.empty()) { |
| 354 | BackendArgs.push_back("-limit-float-precision"); |
| 355 | BackendArgs.push_back(CodeGenOpts.LimitFloatPrecision.c_str()); |
| 356 | } |
| 357 | if (llvm::TimePassesIsEnabled) |
| 358 | BackendArgs.push_back("-time-passes"); |
Daniel Dunbar | 3c66d30 | 2011-03-22 16:48:17 +0000 | [diff] [blame] | 359 | for (unsigned i = 0, e = CodeGenOpts.BackendOptions.size(); i != e; ++i) |
| 360 | BackendArgs.push_back(CodeGenOpts.BackendOptions[i].c_str()); |
Chad Rosier | 1b90605 | 2011-08-26 00:26:29 +0000 | [diff] [blame] | 361 | if (CodeGenOpts.NoGlobalMerge) |
| 362 | BackendArgs.push_back("-global-merge=false"); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 363 | BackendArgs.push_back(0); |
| 364 | llvm::cl::ParseCommandLineOptions(BackendArgs.size() - 1, |
David Blaikie | 6bd17d2 | 2012-02-07 19:36:38 +0000 | [diff] [blame] | 365 | BackendArgs.data()); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 366 | |
| 367 | std::string FeaturesStr; |
Evan Cheng | 368691e | 2011-06-30 02:06:32 +0000 | [diff] [blame] | 368 | if (TargetOpts.Features.size()) { |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 369 | SubtargetFeatures Features; |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 370 | for (std::vector<std::string>::const_iterator |
| 371 | it = TargetOpts.Features.begin(), |
| 372 | ie = TargetOpts.Features.end(); it != ie; ++it) |
| 373 | Features.AddFeature(*it); |
| 374 | FeaturesStr = Features.getString(); |
| 375 | } |
Evan Cheng | 2860e30 | 2011-07-19 06:37:41 +0000 | [diff] [blame] | 376 | |
| 377 | llvm::Reloc::Model RM = llvm::Reloc::Default; |
| 378 | if (CodeGenOpts.RelocationModel == "static") { |
| 379 | RM = llvm::Reloc::Static; |
| 380 | } else if (CodeGenOpts.RelocationModel == "pic") { |
| 381 | RM = llvm::Reloc::PIC_; |
| 382 | } else { |
| 383 | assert(CodeGenOpts.RelocationModel == "dynamic-no-pic" && |
| 384 | "Invalid PIC model!"); |
| 385 | RM = llvm::Reloc::DynamicNoPIC; |
| 386 | } |
| 387 | |
Evan Cheng | 9254bf7 | 2011-11-16 08:38:55 +0000 | [diff] [blame] | 388 | CodeGenOpt::Level OptLevel = CodeGenOpt::Default; |
| 389 | switch (CodeGenOpts.OptimizationLevel) { |
| 390 | default: break; |
| 391 | case 0: OptLevel = CodeGenOpt::None; break; |
| 392 | case 3: OptLevel = CodeGenOpt::Aggressive; break; |
| 393 | } |
| 394 | |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 395 | llvm::TargetOptions Options; |
| 396 | |
| 397 | // Set frame pointer elimination mode. |
| 398 | if (!CodeGenOpts.DisableFPElim) { |
| 399 | Options.NoFramePointerElim = false; |
| 400 | Options.NoFramePointerElimNonLeaf = false; |
| 401 | } else if (CodeGenOpts.OmitLeafFramePointer) { |
| 402 | Options.NoFramePointerElim = false; |
| 403 | Options.NoFramePointerElimNonLeaf = true; |
| 404 | } else { |
| 405 | Options.NoFramePointerElim = true; |
| 406 | Options.NoFramePointerElimNonLeaf = true; |
| 407 | } |
| 408 | |
Rafael Espindola | 8af669f | 2012-06-19 01:26:10 +0000 | [diff] [blame] | 409 | if (CodeGenOpts.UseInitArray) |
| 410 | Options.UseInitArray = true; |
| 411 | |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 412 | // Set float ABI type. |
| 413 | if (CodeGenOpts.FloatABI == "soft" || CodeGenOpts.FloatABI == "softfp") |
| 414 | Options.FloatABIType = llvm::FloatABI::Soft; |
| 415 | else if (CodeGenOpts.FloatABI == "hard") |
| 416 | Options.FloatABIType = llvm::FloatABI::Hard; |
| 417 | else { |
| 418 | assert(CodeGenOpts.FloatABI.empty() && "Invalid float abi!"); |
| 419 | Options.FloatABIType = llvm::FloatABI::Default; |
| 420 | } |
| 421 | |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 422 | // Set FP fusion mode. |
Lang Hames | 931c083 | 2012-11-15 07:51:26 +0000 | [diff] [blame] | 423 | switch (CodeGenOpts.getFPContractMode()) { |
| 424 | case CodeGenOptions::FPC_Off: |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 425 | Options.AllowFPOpFusion = llvm::FPOpFusion::Strict; |
| 426 | break; |
Lang Hames | 931c083 | 2012-11-15 07:51:26 +0000 | [diff] [blame] | 427 | case CodeGenOptions::FPC_On: |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 428 | Options.AllowFPOpFusion = llvm::FPOpFusion::Standard; |
| 429 | break; |
Lang Hames | 931c083 | 2012-11-15 07:51:26 +0000 | [diff] [blame] | 430 | case CodeGenOptions::FPC_Fast: |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 431 | Options.AllowFPOpFusion = llvm::FPOpFusion::Fast; |
Nadav Rotem | 25030c4 | 2012-10-19 04:15:32 +0000 | [diff] [blame] | 432 | break; |
Lang Hames | c968671 | 2012-07-06 00:59:19 +0000 | [diff] [blame] | 433 | } |
| 434 | |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 435 | Options.LessPreciseFPMADOption = CodeGenOpts.LessPreciseFPMAD; |
| 436 | Options.NoInfsFPMath = CodeGenOpts.NoInfsFPMath; |
| 437 | Options.NoNaNsFPMath = CodeGenOpts.NoNaNsFPMath; |
| 438 | Options.NoZerosInBSS = CodeGenOpts.NoZeroInitializedInBSS; |
| 439 | Options.UnsafeFPMath = CodeGenOpts.UnsafeFPMath; |
| 440 | Options.UseSoftFloat = CodeGenOpts.SoftFloat; |
Nick Lewycky | 4e785c9 | 2011-12-06 03:33:03 +0000 | [diff] [blame] | 441 | Options.StackAlignmentOverride = CodeGenOpts.StackAlignment; |
| 442 | Options.RealignStack = CodeGenOpts.StackRealignment; |
Nick Lewycky | 1db772b | 2012-01-23 08:29:12 +0000 | [diff] [blame] | 443 | Options.DisableTailCalls = CodeGenOpts.DisableTailCalls; |
Bob Wilson | 71fd6cc | 2012-02-03 06:27:22 +0000 | [diff] [blame] | 444 | Options.TrapFuncName = CodeGenOpts.TrapFuncName; |
Chandler Carruth | 5081de5 | 2012-04-08 21:09:51 +0000 | [diff] [blame] | 445 | Options.PositionIndependentExecutable = LangOpts.PIELevel != 0; |
Chad Rosier | a7afeb0 | 2012-08-21 16:16:06 +0000 | [diff] [blame] | 446 | Options.SSPBufferSize = CodeGenOpts.SSPBufferSize; |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 447 | |
Evan Cheng | 368691e | 2011-06-30 02:06:32 +0000 | [diff] [blame] | 448 | TargetMachine *TM = TheTarget->createTargetMachine(Triple, TargetOpts.CPU, |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 449 | FeaturesStr, Options, |
| 450 | RM, CM, OptLevel); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 451 | |
| 452 | if (CodeGenOpts.RelaxAll) |
| 453 | TM->setMCRelaxAll(true); |
Daniel Dunbar | 9693232 | 2011-03-28 22:49:28 +0000 | [diff] [blame] | 454 | if (CodeGenOpts.SaveTempLabels) |
| 455 | TM->setMCSaveTempLabels(true); |
Rafael Espindola | f24a151 | 2011-04-30 18:35:43 +0000 | [diff] [blame] | 456 | if (CodeGenOpts.NoDwarf2CFIAsm) |
| 457 | TM->setMCUseCFI(false); |
Nick Lewycky | aaf2f36 | 2011-10-31 01:06:42 +0000 | [diff] [blame] | 458 | if (!CodeGenOpts.NoDwarfDirectoryAsm) |
| 459 | TM->setMCUseDwarfDirectory(true); |
Nick Lewycky | c3b9014 | 2011-06-21 00:14:18 +0000 | [diff] [blame] | 460 | if (CodeGenOpts.NoExecStack) |
| 461 | TM->setMCNoExecStack(true); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 462 | |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 463 | return TM; |
| 464 | } |
| 465 | |
| 466 | bool EmitAssemblyHelper::AddEmitPasses(BackendAction Action, |
| 467 | formatted_raw_ostream &OS, |
| 468 | TargetMachine *TM) { |
| 469 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 470 | // Create the code generator passes. |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 471 | PassManager *PM = getCodeGenPasses(TM); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 472 | |
Chad Rosier | 3f3335d | 2012-02-29 20:14:59 +0000 | [diff] [blame] | 473 | // Add LibraryInfo. |
Daniel Dunbar | cbbe2c0 | 2012-10-19 20:10:10 +0000 | [diff] [blame] | 474 | llvm::Triple TargetTriple(TheModule->getTargetTriple()); |
| 475 | TargetLibraryInfo *TLI = new TargetLibraryInfo(TargetTriple); |
Chad Rosier | 3f3335d | 2012-02-29 20:14:59 +0000 | [diff] [blame] | 476 | if (!CodeGenOpts.SimplifyLibCalls) |
| 477 | TLI->disableAllFunctions(); |
| 478 | PM->add(TLI); |
| 479 | |
Nadav Rotem | 25030c4 | 2012-10-19 04:15:32 +0000 | [diff] [blame] | 480 | // Add TargetTransformInfo. |
| 481 | PM->add(new TargetTransformInfo(TM->getScalarTargetTransformInfo(), |
| 482 | TM->getVectorTargetTransformInfo())); |
| 483 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 484 | // Normal mode, emit a .s or .o file by running the code generator. Note, |
| 485 | // this also adds codegenerator level optimization passes. |
| 486 | TargetMachine::CodeGenFileType CGFT = TargetMachine::CGFT_AssemblyFile; |
| 487 | if (Action == Backend_EmitObj) |
| 488 | CGFT = TargetMachine::CGFT_ObjectFile; |
| 489 | else if (Action == Backend_EmitMCNull) |
| 490 | CGFT = TargetMachine::CGFT_Null; |
| 491 | else |
| 492 | assert(Action == Backend_EmitAssembly && "Invalid action!"); |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 493 | |
| 494 | // Add ObjC ARC final-cleanup optimizations. This is done as part of the |
| 495 | // "codegen" passes so that it isn't run multiple times when there is |
| 496 | // inlining happening. |
Dan Gohman | 465a899 | 2012-04-04 21:04:56 +0000 | [diff] [blame] | 497 | if (LangOpts.ObjCAutoRefCount && |
| 498 | CodeGenOpts.OptimizationLevel > 0) |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 499 | PM->add(createObjCARCContractPass()); |
| 500 | |
Evan Cheng | 9254bf7 | 2011-11-16 08:38:55 +0000 | [diff] [blame] | 501 | if (TM->addPassesToEmitFile(*PM, OS, CGFT, |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 502 | /*DisableVerify=*/!CodeGenOpts.VerifyModule)) { |
| 503 | Diags.Report(diag::err_fe_unable_to_interface_with_target); |
| 504 | return false; |
| 505 | } |
| 506 | |
| 507 | return true; |
| 508 | } |
| 509 | |
| 510 | void EmitAssemblyHelper::EmitAssembly(BackendAction Action, raw_ostream *OS) { |
| 511 | TimeRegion Region(llvm::TimePassesIsEnabled ? &CodeGenerationTime : 0); |
| 512 | llvm::formatted_raw_ostream FormattedOS; |
| 513 | |
Nadav Rotem | 129369d | 2012-10-24 03:52:31 +0000 | [diff] [blame] | 514 | bool UsesCodeGen = (Action != Backend_EmitNothing && |
| 515 | Action != Backend_EmitBC && |
| 516 | Action != Backend_EmitLL); |
| 517 | TargetMachine *TM = CreateTargetMachine(UsesCodeGen); |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 518 | CreatePasses(TM); |
| 519 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 520 | switch (Action) { |
| 521 | case Backend_EmitNothing: |
| 522 | break; |
| 523 | |
| 524 | case Backend_EmitBC: |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 525 | getPerModulePasses(TM)->add(createBitcodeWriterPass(*OS)); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 526 | break; |
| 527 | |
| 528 | case Backend_EmitLL: |
| 529 | FormattedOS.setStream(*OS, formatted_raw_ostream::PRESERVE_STREAM); |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 530 | getPerModulePasses(TM)->add(createPrintModulePass(&FormattedOS)); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 531 | break; |
| 532 | |
| 533 | default: |
| 534 | FormattedOS.setStream(*OS, formatted_raw_ostream::PRESERVE_STREAM); |
Nadav Rotem | fa60be0 | 2012-10-24 00:53:38 +0000 | [diff] [blame] | 535 | if (!AddEmitPasses(Action, FormattedOS, TM)) |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 536 | return; |
| 537 | } |
| 538 | |
Andrew Trick | 92b5d94 | 2011-04-05 18:56:55 +0000 | [diff] [blame] | 539 | // Before executing passes, print the final values of the LLVM options. |
| 540 | cl::PrintOptionValues(); |
| 541 | |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 542 | // Run passes. For now we do all passes at once, but eventually we |
| 543 | // would like to have the option of streaming code generation. |
| 544 | |
| 545 | if (PerFunctionPasses) { |
| 546 | PrettyStackTraceString CrashInfo("Per-function optimization"); |
| 547 | |
| 548 | PerFunctionPasses->doInitialization(); |
| 549 | for (Module::iterator I = TheModule->begin(), |
| 550 | E = TheModule->end(); I != E; ++I) |
| 551 | if (!I->isDeclaration()) |
| 552 | PerFunctionPasses->run(*I); |
| 553 | PerFunctionPasses->doFinalization(); |
| 554 | } |
| 555 | |
| 556 | if (PerModulePasses) { |
| 557 | PrettyStackTraceString CrashInfo("Per-module optimization passes"); |
| 558 | PerModulePasses->run(*TheModule); |
| 559 | } |
| 560 | |
| 561 | if (CodeGenPasses) { |
| 562 | PrettyStackTraceString CrashInfo("Code generation"); |
Daniel Dunbar | db2f237 | 2010-09-17 07:35:16 +0000 | [diff] [blame] | 563 | CodeGenPasses->run(*TheModule); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 564 | } |
| 565 | } |
| 566 | |
David Blaikie | d6471f7 | 2011-09-25 23:23:43 +0000 | [diff] [blame] | 567 | void clang::EmitBackendOutput(DiagnosticsEngine &Diags, |
| 568 | const CodeGenOptions &CGOpts, |
Nick Lewycky | 3aaeccc | 2011-12-02 22:17:00 +0000 | [diff] [blame] | 569 | const clang::TargetOptions &TOpts, |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 570 | const LangOptions &LOpts, |
| 571 | Module *M, |
Daniel Dunbar | 05a7f3d | 2010-06-07 23:21:04 +0000 | [diff] [blame] | 572 | BackendAction Action, raw_ostream *OS) { |
Dan Gohman | b18b8ad | 2011-07-05 22:02:36 +0000 | [diff] [blame] | 573 | EmitAssemblyHelper AsmHelper(Diags, CGOpts, TOpts, LOpts, M); |
Daniel Dunbar | 897c676 | 2010-06-07 23:20:08 +0000 | [diff] [blame] | 574 | |
| 575 | AsmHelper.EmitAssembly(Action, OS); |
| 576 | } |