slang_backend.cpp revision 2c6bad5038d8509466b9e0f9aa6a8ae533c0e029
1c383a500aa59423264811be3874461bf8adbfea0Zonr Chang/* 2c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * Copyright 2010, The Android Open Source Project 3c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * 4c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * Licensed under the Apache License, Version 2.0 (the "License"); 5c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * you may not use this file except in compliance with the License. 6c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * You may obtain a copy of the License at 7c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * 8c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * http://www.apache.org/licenses/LICENSE-2.0 9c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * 10c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * Unless required by applicable law or agreed to in writing, software 11c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * distributed under the License is distributed on an "AS IS" BASIS, 12c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * See the License for the specific language governing permissions and 14c383a500aa59423264811be3874461bf8adbfea0Zonr Chang * limitations under the License. 15c383a500aa59423264811be3874461bf8adbfea0Zonr Chang */ 16c383a500aa59423264811be3874461bf8adbfea0Zonr Chang 176315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr#include "slang_backend.h" 18462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 19e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include <string> 20e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include <vector> 21462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 22e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "clang/AST/ASTContext.h" 239ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/AST/Decl.h" 249ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/AST/DeclGroup.h" 25462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 269ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Basic/Diagnostic.h" 27e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "clang/Basic/TargetInfo.h" 289ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Basic/TargetOptions.h" 29462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 30e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "clang/CodeGen/ModuleBuilder.h" 31e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines 323a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang#include "clang/Frontend/CodeGenOptions.h" 339ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Frontend/FrontendDiagnostic.h" 34462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 35e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/Assembly/PrintModulePass.h" 36e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines 37e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/Bitcode/ReaderWriter.h" 38e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines 39e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/CodeGen/RegAllocRegistry.h" 40e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/CodeGen/SchedulerRegistry.h" 41e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines 42e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/LLVMContext.h" 43e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/Module.h" 44e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/Metadata.h" 45e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines 469207a2e495c8363606861e4f034504ec5c153dabLogan Chien#include "llvm/Transforms/IPO/PassManagerBuilder.h" 47fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao 48e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/Target/TargetData.h" 49e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/Target/TargetMachine.h" 50e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/Target/TargetOptions.h" 519207a2e495c8363606861e4f034504ec5c153dabLogan Chien#include "llvm/Support/TargetRegistry.h" 5277703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao 5377703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao#include "llvm/MC/SubtargetFeature.h" 54462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 556e6578a360497f78a181e63d7783422a9c9bfb15Stephen Hines#include "slang_assert.h" 564cc499d6e5ec602309501873449c938af61170b2Stephen Hines#include "BitWriter_2_9/ReaderWriter_2_9.h" 576315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr 58e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hinesnamespace slang { 59462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 603a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Changvoid Backend::CreateFunctionPasses() { 613a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang if (!mPerFunctionPasses) { 623a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mPerFunctionPasses = new llvm::FunctionPassManager(mpModule); 6341ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang mPerFunctionPasses->add(new llvm::TargetData(mpModule)); 643a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 65fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao llvm::PassManagerBuilder PMBuilder; 66fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.OptLevel = mCodeGenOpts.OptimizationLevel; 67fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.populateFunctionPassManager(*mPerFunctionPasses); 683a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang } 693a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang return; 703a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang} 713a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 723a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Changvoid Backend::CreateModulePasses() { 733a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang if (!mPerModulePasses) { 743a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mPerModulePasses = new llvm::PassManager(); 7541ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang mPerModulePasses->add(new llvm::TargetData(mpModule)); 763a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 77fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao llvm::PassManagerBuilder PMBuilder; 78fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.OptLevel = mCodeGenOpts.OptimizationLevel; 79fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.SizeLevel = mCodeGenOpts.OptimizeSize; 80fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.SizeLevel = mCodeGenOpts.OptimizeSize; 81fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao if (mCodeGenOpts.UnitAtATime) { 82fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.DisableUnitAtATime = 0; 83fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao } else { 84fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.DisableUnitAtATime = 1; 85fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao } 86fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao 87fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao if (mCodeGenOpts.UnrollLoops) { 88fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.DisableUnrollLoops = 0; 89fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao } else { 90fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.DisableUnrollLoops = 1; 91fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao } 92fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao 93fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.DisableSimplifyLibCalls = false; 94fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.populateModulePassManager(*mPerModulePasses); 953a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang } 963a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang return; 973a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang} 983a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 99462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liaobool Backend::CreateCodeGenPasses() { 1003a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang if ((mOT != Slang::OT_Assembly) && (mOT != Slang::OT_Object)) 1019ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return true; 102462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 1039ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Now we add passes for code emitting 1049ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mCodeGenPasses) { 105462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao return true; 1069ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } else { 1079ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses = new llvm::FunctionPassManager(mpModule); 10841ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang mCodeGenPasses->add(new llvm::TargetData(mpModule)); 1099ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 1109ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1119ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create the TargetMachine for generating code. 1129ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao std::string Triple = mpModule->getTargetTriple(); 1139ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1149ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao std::string Error; 1159ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao const llvm::Target* TargetInfo = 1169ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetRegistry::lookupTarget(Triple, Error); 1176315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr if (TargetInfo == NULL) { 1189207a2e495c8363606861e4f034504ec5c153dabLogan Chien mDiagEngine.Report(clang::diag::err_fe_unable_to_create_target) << Error; 1199ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return false; 1209ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 1219ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1229ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::NoFramePointerElim = mCodeGenOpts.DisableFPElim; 1239ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1249ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Use hardware FPU. 1259ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // 1269ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // FIXME: Need to detect the CPU capability and decide whether to use softfp. 1279ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // To use softfp, change following 2 lines to 1289ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // 1299ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // llvm::FloatABIType = llvm::FloatABI::Soft; 1309ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // llvm::UseSoftFloat = true; 1319ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::FloatABIType = llvm::FloatABI::Hard; 1329ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::UseSoftFloat = false; 1339ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1349ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // BCC needs all unknown symbols resolved at compilation time. So we don't 1359ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // need any relocation model. 136ab992e59a36a18df49bf4878968ef0598299afd3Logan Chien llvm::Reloc::Model RM = llvm::Reloc::Static; 1379ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 13841ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang // This is set for the linker (specify how large of the virtual addresses we 13941ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang // can access for all unknown symbols.) 1409207a2e495c8363606861e4f034504ec5c153dabLogan Chien llvm::CodeModel::Model CM; 1419207a2e495c8363606861e4f034504ec5c153dabLogan Chien if (mpModule->getPointerSize() == llvm::Module::Pointer32) { 1429207a2e495c8363606861e4f034504ec5c153dabLogan Chien CM = llvm::CodeModel::Small; 1439207a2e495c8363606861e4f034504ec5c153dabLogan Chien } else { 14441ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang // The target may have pointer size greater than 32 (e.g. x86_64 14541ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang // architecture) may need large data address model 1469207a2e495c8363606861e4f034504ec5c153dabLogan Chien CM = llvm::CodeModel::Medium; 1479207a2e495c8363606861e4f034504ec5c153dabLogan Chien } 1489ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1499ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Setup feature string 1509ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao std::string FeaturesStr; 1519ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mTargetOpts.CPU.size() || mTargetOpts.Features.size()) { 1529ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::SubtargetFeatures Features; 1539ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1549ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao for (std::vector<std::string>::const_iterator 1559ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I = mTargetOpts.Features.begin(), E = mTargetOpts.Features.end(); 1569ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 1579ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) 1589ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao Features.AddFeature(*I); 1599ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1609ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao FeaturesStr = Features.getString(); 1619ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 1629207a2e495c8363606861e4f034504ec5c153dabLogan Chien 1639ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetMachine *TM = 1649207a2e495c8363606861e4f034504ec5c153dabLogan Chien TargetInfo->createTargetMachine(Triple, mTargetOpts.CPU, FeaturesStr, 1659207a2e495c8363606861e4f034504ec5c153dabLogan Chien RM, CM); 1669ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1679ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Register scheduler 1689ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::RegisterScheduler::setDefault(llvm::createDefaultScheduler); 1699ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1709ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Register allocation policy: 1719ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // createFastRegisterAllocator: fast but bad quality 1722c6bad5038d8509466b9e0f9aa6a8ae533c0e029Logan Chien // createGreedyRegisterAllocator: not so fast but good quality 1739ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::RegisterRegAlloc::setDefault((mCodeGenOpts.OptimizationLevel == 0) ? 1749ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::createFastRegisterAllocator : 1752c6bad5038d8509466b9e0f9aa6a8ae533c0e029Logan Chien llvm::createGreedyRegisterAllocator); 1769ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1779ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::CodeGenOpt::Level OptLevel = llvm::CodeGenOpt::Default; 17877703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao if (mCodeGenOpts.OptimizationLevel == 0) { 1799ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao OptLevel = llvm::CodeGenOpt::None; 18077703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao } else if (mCodeGenOpts.OptimizationLevel == 3) { 1819ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao OptLevel = llvm::CodeGenOpt::Aggressive; 18277703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao } 1839ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1849ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetMachine::CodeGenFileType CGFT = 1856315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr llvm::TargetMachine::CGFT_AssemblyFile; 18677703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao if (mOT == Slang::OT_Object) { 1879ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CGFT = llvm::TargetMachine::CGFT_ObjectFile; 18877703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao } 1899ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (TM->addPassesToEmitFile(*mCodeGenPasses, FormattedOutStream, 1909ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CGFT, OptLevel)) { 1919207a2e495c8363606861e4f034504ec5c153dabLogan Chien mDiagEngine.Report(clang::diag::err_fe_unable_to_interface_with_target); 1929ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return false; 1939ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 1949ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1959ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return true; 196462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 197462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 1989207a2e495c8363606861e4f034504ec5c153dabLogan ChienBackend::Backend(clang::DiagnosticsEngine *DiagEngine, 1999ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao const clang::CodeGenOptions &CodeGenOpts, 2009ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao const clang::TargetOptions &TargetOpts, 2013fd0a94a5cf1656569b1aea07043cc63939dcb46Stephen Hines PragmaList *Pragmas, 2029ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::raw_ostream *OS, 2033a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang Slang::OutputType OT) 2046315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr : ASTConsumer(), 2056315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mCodeGenOpts(CodeGenOpts), 2066315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mTargetOpts(TargetOpts), 20768fc02ca4a7235e2981be5eee4ad968a9d3928c0Zonr Chang mpModule(NULL), 2086315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mpOS(OS), 2093a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mOT(OT), 2106315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mGen(NULL), 2116315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mPerFunctionPasses(NULL), 2126315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mPerModulePasses(NULL), 2136315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mCodeGenPasses(NULL), 2146315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mLLVMContext(llvm::getGlobalContext()), 2159207a2e495c8363606861e4f034504ec5c153dabLogan Chien mDiagEngine(*DiagEngine), 2166315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mPragmas(Pragmas) { 2176315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr FormattedOutStream.setStream(*mpOS, 2186315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr llvm::formatted_raw_ostream::PRESERVE_STREAM); 2199207a2e495c8363606861e4f034504ec5c153dabLogan Chien mGen = CreateLLVMCodeGen(mDiagEngine, "", mCodeGenOpts, mLLVMContext); 2209ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 221462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 222462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2239ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::Initialize(clang::ASTContext &Ctx) { 2249ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->Initialize(Ctx); 225462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2269ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mpModule = mGen->GetModule(); 227462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2289ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 229462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 230462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2319ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::HandleTopLevelDecl(clang::DeclGroupRef D) { 2329ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->HandleTopLevelDecl(D); 2339ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 234462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 235462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2369ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::HandleTranslationUnit(clang::ASTContext &Ctx) { 23768fc02ca4a7235e2981be5eee4ad968a9d3928c0Zonr Chang HandleTranslationUnitPre(Ctx); 23868fc02ca4a7235e2981be5eee4ad968a9d3928c0Zonr Chang 2399ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->HandleTranslationUnit(Ctx); 240462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2419ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Here, we complete a translation unit (whole translation unit is now in LLVM 2429ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // IR). Now, interact with LLVM backend to generate actual machine code (asm 2439ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // or machine code, whatever.) 244462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2459ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Silently ignore if we weren't initialized for some reason. 24641ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang if (!mpModule) 2479ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 248462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2499ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::Module *M = mGen->ReleaseModule(); 2509ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (!M) { 2519ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // The module has been released by IR gen on failures, do not double free. 2529ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mpModule = NULL; 2539ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 2549ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 2559ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 2566e6578a360497f78a181e63d7783422a9c9bfb15Stephen Hines slangAssert(mpModule == M && 2576e6578a360497f78a181e63d7783422a9c9bfb15Stephen Hines "Unexpected module change during LLVM IR generation"); 2589ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 2599ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Insert #pragma information into metadata section of module 2603fd0a94a5cf1656569b1aea07043cc63939dcb46Stephen Hines if (!mPragmas->empty()) { 2619ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::NamedMDNode *PragmaMetadata = 2629ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mpModule->getOrInsertNamedMetadata(Slang::PragmaMetadataName); 2633fd0a94a5cf1656569b1aea07043cc63939dcb46Stephen Hines for (PragmaList::const_iterator I = mPragmas->begin(), E = mPragmas->end(); 2649ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 2659ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) { 2669ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::SmallVector<llvm::Value*, 2> Pragma; 2679ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Name goes first 2689ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao Pragma.push_back(llvm::MDString::get(mLLVMContext, I->first)); 2699ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // And then value 2709ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao Pragma.push_back(llvm::MDString::get(mLLVMContext, I->second)); 27183f0c6261efc8f397fc2509e3862bc6d0eb1e1c4Shih-wei Liao 2729ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create MDNode and insert into PragmaMetadata 2739ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao PragmaMetadata->addOperand( 27418c8829f2bd3cbe0d02471588c6643c0a8c6ca3cStephen Hines llvm::MDNode::get(mLLVMContext, Pragma)); 275462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao } 2769ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 277462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 27868fc02ca4a7235e2981be5eee4ad968a9d3928c0Zonr Chang HandleTranslationUnitPost(mpModule); 279462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2809ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create passes for optimization and code emission 281462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2829ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create and run per-function passes 2839ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CreateFunctionPasses(); 2849ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mPerFunctionPasses) { 2859ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerFunctionPasses->doInitialization(); 286462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2879ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao for (llvm::Module::iterator I = mpModule->begin(), E = mpModule->end(); 2889ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 2899ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) 2909ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (!I->isDeclaration()) 2919ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerFunctionPasses->run(*I); 292462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2939ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerFunctionPasses->doFinalization(); 2949ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 295462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2969ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create and run module passes 2979ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CreateModulePasses(); 2989ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mPerModulePasses) 2999ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerModulePasses->run(*mpModule); 3009ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 3013a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang switch (mOT) { 3023a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Assembly: 3033a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Object: { 3046315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr if (!CreateCodeGenPasses()) 3059ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 306462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3079ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses->doInitialization(); 308462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3099ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao for (llvm::Module::iterator I = mpModule->begin(), E = mpModule->end(); 3109ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 3119ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) 3126315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr if (!I->isDeclaration()) 3139ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses->run(*I); 3149ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 3159ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses->doFinalization(); 3169ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao break; 3179ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3183a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_LLVMAssembly: { 3199ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::PassManager *LLEmitPM = new llvm::PassManager(); 3209ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao LLEmitPM->add(llvm::createPrintModulePass(&FormattedOutStream)); 3219ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao LLEmitPM->run(*mpModule); 3229ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao break; 323462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao } 3243a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Bitcode: { 3259ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::PassManager *BCEmitPM = new llvm::PassManager(); 3264cc499d6e5ec602309501873449c938af61170b2Stephen Hines if (getTargetAPI() < SLANG_ICS_TARGET_API) { 3274cc499d6e5ec602309501873449c938af61170b2Stephen Hines // Pre-ICS targets must use the LLVM 2.9 BitcodeWriter 3284cc499d6e5ec602309501873449c938af61170b2Stephen Hines BCEmitPM->add(llvm_2_9::createBitcodeWriterPass(FormattedOutStream)); 3294cc499d6e5ec602309501873449c938af61170b2Stephen Hines } else { 3304cc499d6e5ec602309501873449c938af61170b2Stephen Hines BCEmitPM->add(llvm::createBitcodeWriterPass(FormattedOutStream)); 3314cc499d6e5ec602309501873449c938af61170b2Stephen Hines } 3329ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao BCEmitPM->run(*mpModule); 3339ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao break; 3349ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3353a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Nothing: { 3369ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 3379ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3389ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao default: { 3396e6578a360497f78a181e63d7783422a9c9bfb15Stephen Hines slangAssert(false && "Unknown output type"); 3409ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3419ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 342462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3439ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao FormattedOutStream.flush(); 3449ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 3459ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 346462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 347462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3489ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::HandleTagDeclDefinition(clang::TagDecl *D) { 3499ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->HandleTagDeclDefinition(D); 3509ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 351462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 352462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3539ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::CompleteTentativeDefinition(clang::VarDecl *D) { 3549ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->CompleteTentativeDefinition(D); 3559ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 356462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 357462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 358462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei LiaoBackend::~Backend() { 3599ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mpModule; 3609ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mGen; 3619ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mPerFunctionPasses; 3629ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mPerModulePasses; 3639ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mCodeGenPasses; 3649ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 365462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 366e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines 367e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines} // namespace slang 368