slang_backend.cpp revision c706907a8041faaa882f9bd87f1d1c1669023a62
1c383a500aa59423264811be3874461bf8adbfea0Zonr Chang/* 25e3b677a3041c86a7f860238dd1f5ff9d111b507Stephen Hines * Copyright 2010-2012, 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 225e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines#include "bcinfo/BitcodeWrapper.h" 235e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines 24e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "clang/AST/ASTContext.h" 259ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/AST/Decl.h" 269ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/AST/DeclGroup.h" 27462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 289ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Basic/Diagnostic.h" 29e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "clang/Basic/TargetInfo.h" 309ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Basic/TargetOptions.h" 31462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 32e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "clang/CodeGen/ModuleBuilder.h" 33e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines 343a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang#include "clang/Frontend/CodeGenOptions.h" 359ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao#include "clang/Frontend/FrontendDiagnostic.h" 36462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 37ee4016d1247d3fbe50822de279d3da273d8aef4cTim Murray#include "llvm/IR/IRPrintingPasses.h" 38e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines 39e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/Bitcode/ReaderWriter.h" 40e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines 41e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/CodeGen/RegAllocRegistry.h" 42e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/CodeGen/SchedulerRegistry.h" 43e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines 4423c4358f12bd9d0ba7166eceebd683db95a41b3fStephen Hines#include "llvm/IR/LLVMContext.h" 4523c4358f12bd9d0ba7166eceebd683db95a41b3fStephen Hines#include "llvm/IR/Module.h" 4623c4358f12bd9d0ba7166eceebd683db95a41b3fStephen Hines#include "llvm/IR/Metadata.h" 47e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines 489207a2e495c8363606861e4f034504ec5c153dabLogan Chien#include "llvm/Transforms/IPO/PassManagerBuilder.h" 49fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao 5023c4358f12bd9d0ba7166eceebd683db95a41b3fStephen Hines#include "llvm/IR/DataLayout.h" 51e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/Target/TargetMachine.h" 52e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines#include "llvm/Target/TargetOptions.h" 539207a2e495c8363606861e4f034504ec5c153dabLogan Chien#include "llvm/Support/TargetRegistry.h" 5477703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao 5577703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao#include "llvm/MC/SubtargetFeature.h" 56462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 576e6578a360497f78a181e63d7783422a9c9bfb15Stephen Hines#include "slang_assert.h" 58552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines#include "strip_unknown_attributes.h" 594cc499d6e5ec602309501873449c938af61170b2Stephen Hines#include "BitWriter_2_9/ReaderWriter_2_9.h" 609b044ec938fd56355012851890c63974c8042c9fStephen Hines#include "BitWriter_2_9_func/ReaderWriter_2_9_func.h" 61d711dec946b6408791ca59eb98e363ef04bbd4aaStephen Hines#include "BitWriter_3_2/ReaderWriter_3_2.h" 626315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr 63e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hinesnamespace slang { 64462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 653a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Changvoid Backend::CreateFunctionPasses() { 663a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang if (!mPerFunctionPasses) { 67c706907a8041faaa882f9bd87f1d1c1669023a62Stephen Hines mPerFunctionPasses = new llvm::legacy::FunctionPassManager(mpModule); 683eb819ad8beec566a73b288204f9b75c2bb1d4e6Stephen Hines mPerFunctionPasses->add(new llvm::DataLayoutPass()); 693a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 70fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao llvm::PassManagerBuilder PMBuilder; 71fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.OptLevel = mCodeGenOpts.OptimizationLevel; 72fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.populateFunctionPassManager(*mPerFunctionPasses); 733a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang } 743a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang} 753a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 763a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Changvoid Backend::CreateModulePasses() { 773a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang if (!mPerModulePasses) { 78c706907a8041faaa882f9bd87f1d1c1669023a62Stephen Hines mPerModulePasses = new llvm::legacy::PassManager(); 793eb819ad8beec566a73b288204f9b75c2bb1d4e6Stephen Hines mPerModulePasses->add(new llvm::DataLayoutPass()); 803a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 81fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao llvm::PassManagerBuilder PMBuilder; 82fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.OptLevel = mCodeGenOpts.OptimizationLevel; 83fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.SizeLevel = mCodeGenOpts.OptimizeSize; 84fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao if (mCodeGenOpts.UnitAtATime) { 85fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.DisableUnitAtATime = 0; 86fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao } else { 87fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.DisableUnitAtATime = 1; 88fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao } 89fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao 90fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao if (mCodeGenOpts.UnrollLoops) { 91fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.DisableUnrollLoops = 0; 92fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao } else { 93fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.DisableUnrollLoops = 1; 94fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao } 95fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao 96fcc654a1f4034978f7534479f9c5c33a92ca8546Shih-wei Liao PMBuilder.populateModulePassManager(*mPerModulePasses); 97552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines // Add a pass to strip off unknown/unsupported attributes. 98552d872e5cdc883d9f8e76d8c67d3a82e3ece488Stephen Hines mPerModulePasses->add(createStripUnknownAttributesPass()); 993a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang } 1003a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang} 1013a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang 102462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liaobool Backend::CreateCodeGenPasses() { 1033a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang if ((mOT != Slang::OT_Assembly) && (mOT != Slang::OT_Object)) 1049ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return true; 105462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 1069ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Now we add passes for code emitting 1079ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mCodeGenPasses) { 108462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao return true; 1099ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } else { 110c706907a8041faaa882f9bd87f1d1c1669023a62Stephen Hines mCodeGenPasses = new llvm::legacy::FunctionPassManager(mpModule); 1113eb819ad8beec566a73b288204f9b75c2bb1d4e6Stephen Hines mCodeGenPasses->add(new llvm::DataLayoutPass()); 1129ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 1139ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1149ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create the TargetMachine for generating code. 1159ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao std::string Triple = mpModule->getTargetTriple(); 1169ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1179ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao std::string Error; 1189ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao const llvm::Target* TargetInfo = 1199ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetRegistry::lookupTarget(Triple, Error); 1205abbe0e9ca2508260b627ffef2bf01e2554e8357Chris Wailes if (TargetInfo == nullptr) { 1219207a2e495c8363606861e4f034504ec5c153dabLogan Chien mDiagEngine.Report(clang::diag::err_fe_unable_to_create_target) << Error; 1229ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return false; 1239ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 1249ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 125ac4e18584b8768b3f68535fa5f16232e03974323Logan Chien // Target Machine Options 126ac4e18584b8768b3f68535fa5f16232e03974323Logan Chien llvm::TargetOptions Options; 127ac4e18584b8768b3f68535fa5f16232e03974323Logan Chien 128ac4e18584b8768b3f68535fa5f16232e03974323Logan Chien Options.NoFramePointerElim = mCodeGenOpts.DisableFPElim; 1299ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1309ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Use hardware FPU. 1319ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // 1329ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // FIXME: Need to detect the CPU capability and decide whether to use softfp. 1339ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // To use softfp, change following 2 lines to 1349ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // 135ac4e18584b8768b3f68535fa5f16232e03974323Logan Chien // Options.FloatABIType = llvm::FloatABI::Soft; 136ac4e18584b8768b3f68535fa5f16232e03974323Logan Chien // Options.UseSoftFloat = true; 137ac4e18584b8768b3f68535fa5f16232e03974323Logan Chien Options.FloatABIType = llvm::FloatABI::Hard; 138ac4e18584b8768b3f68535fa5f16232e03974323Logan Chien Options.UseSoftFloat = false; 1399ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1409ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // BCC needs all unknown symbols resolved at compilation time. So we don't 1419ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // need any relocation model. 142ab992e59a36a18df49bf4878968ef0598299afd3Logan Chien llvm::Reloc::Model RM = llvm::Reloc::Static; 1439ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 14441ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang // This is set for the linker (specify how large of the virtual addresses we 14541ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang // can access for all unknown symbols.) 1469207a2e495c8363606861e4f034504ec5c153dabLogan Chien llvm::CodeModel::Model CM; 147ee4016d1247d3fbe50822de279d3da273d8aef4cTim Murray if (mpModule->getDataLayout()->getPointerSize() == 4) { 1489207a2e495c8363606861e4f034504ec5c153dabLogan Chien CM = llvm::CodeModel::Small; 1499207a2e495c8363606861e4f034504ec5c153dabLogan Chien } else { 15041ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang // The target may have pointer size greater than 32 (e.g. x86_64 15141ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang // architecture) may need large data address model 1529207a2e495c8363606861e4f034504ec5c153dabLogan Chien CM = llvm::CodeModel::Medium; 1539207a2e495c8363606861e4f034504ec5c153dabLogan Chien } 1549ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1559ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Setup feature string 1569ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao std::string FeaturesStr; 1579ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mTargetOpts.CPU.size() || mTargetOpts.Features.size()) { 1589ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::SubtargetFeatures Features; 1599ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1609ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao for (std::vector<std::string>::const_iterator 1619ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I = mTargetOpts.Features.begin(), E = mTargetOpts.Features.end(); 1629ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 1639ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) 1649ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao Features.AddFeature(*I); 1659ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1669ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao FeaturesStr = Features.getString(); 1679ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 1689207a2e495c8363606861e4f034504ec5c153dabLogan Chien 1699ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetMachine *TM = 1709207a2e495c8363606861e4f034504ec5c153dabLogan Chien TargetInfo->createTargetMachine(Triple, mTargetOpts.CPU, FeaturesStr, 171ac4e18584b8768b3f68535fa5f16232e03974323Logan Chien Options, RM, CM); 1729ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1739ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Register scheduler 1749ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::RegisterScheduler::setDefault(llvm::createDefaultScheduler); 1759ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1769ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Register allocation policy: 1779ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // createFastRegisterAllocator: fast but bad quality 1782c6bad5038d8509466b9e0f9aa6a8ae533c0e029Logan Chien // createGreedyRegisterAllocator: not so fast but good quality 1799ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::RegisterRegAlloc::setDefault((mCodeGenOpts.OptimizationLevel == 0) ? 1809ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::createFastRegisterAllocator : 1812c6bad5038d8509466b9e0f9aa6a8ae533c0e029Logan Chien llvm::createGreedyRegisterAllocator); 1829ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1839ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::CodeGenOpt::Level OptLevel = llvm::CodeGenOpt::Default; 18477703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao if (mCodeGenOpts.OptimizationLevel == 0) { 1859ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao OptLevel = llvm::CodeGenOpt::None; 18677703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao } else if (mCodeGenOpts.OptimizationLevel == 3) { 1879ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao OptLevel = llvm::CodeGenOpt::Aggressive; 18877703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao } 1899ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 1909ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::TargetMachine::CodeGenFileType CGFT = 1916315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr llvm::TargetMachine::CGFT_AssemblyFile; 19277703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao if (mOT == Slang::OT_Object) { 1939ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CGFT = llvm::TargetMachine::CGFT_ObjectFile; 19477703262b9c2fecc22287ca236daa72b2cea7d27Shih-wei Liao } 1959ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (TM->addPassesToEmitFile(*mCodeGenPasses, FormattedOutStream, 1969ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CGFT, OptLevel)) { 1979207a2e495c8363606861e4f034504ec5c153dabLogan Chien mDiagEngine.Report(clang::diag::err_fe_unable_to_interface_with_target); 1989ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return false; 1999ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 2009ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 2019ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return true; 202462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 203462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2049207a2e495c8363606861e4f034504ec5c153dabLogan ChienBackend::Backend(clang::DiagnosticsEngine *DiagEngine, 2059ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao const clang::CodeGenOptions &CodeGenOpts, 2069ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao const clang::TargetOptions &TargetOpts, 2073fd0a94a5cf1656569b1aea07043cc63939dcb46Stephen Hines PragmaList *Pragmas, 2089ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::raw_ostream *OS, 2093a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang Slang::OutputType OT) 2106315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr : ASTConsumer(), 2116315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mTargetOpts(TargetOpts), 2125abbe0e9ca2508260b627ffef2bf01e2554e8357Chris Wailes mpModule(nullptr), 2136315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mpOS(OS), 2143a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang mOT(OT), 2155abbe0e9ca2508260b627ffef2bf01e2554e8357Chris Wailes mGen(nullptr), 2165abbe0e9ca2508260b627ffef2bf01e2554e8357Chris Wailes mPerFunctionPasses(nullptr), 2175abbe0e9ca2508260b627ffef2bf01e2554e8357Chris Wailes mPerModulePasses(nullptr), 2185abbe0e9ca2508260b627ffef2bf01e2554e8357Chris Wailes mCodeGenPasses(nullptr), 2196315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mLLVMContext(llvm::getGlobalContext()), 2209207a2e495c8363606861e4f034504ec5c153dabLogan Chien mDiagEngine(*DiagEngine), 221c460b37ffb50819a32c2a8967754b6f784b28263mkopec mCodeGenOpts(CodeGenOpts), 2226315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr mPragmas(Pragmas) { 2236315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr FormattedOutStream.setStream(*mpOS, 2246315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr llvm::formatted_raw_ostream::PRESERVE_STREAM); 225c706907a8041faaa882f9bd87f1d1c1669023a62Stephen Hines mGen = CreateLLVMCodeGen(mDiagEngine, "", mCodeGenOpts, mLLVMContext); 226462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 227462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2289ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::Initialize(clang::ASTContext &Ctx) { 2299ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->Initialize(Ctx); 230462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2319ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mpModule = mGen->GetModule(); 232462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 233462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2345e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines// Encase the Bitcode in a wrapper containing RS version information. 2355e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hinesvoid Backend::WrapBitcode(llvm::raw_string_ostream &Bitcode) { 2365e3b677a3041c86a7f860238dd1f5ff9d111b507Stephen Hines bcinfo::AndroidBitcodeWrapper wrapper; 2375e3b677a3041c86a7f860238dd1f5ff9d111b507Stephen Hines size_t actualWrapperLen = bcinfo::writeAndroidBitcodeWrapper( 2385e3b677a3041c86a7f860238dd1f5ff9d111b507Stephen Hines &wrapper, Bitcode.str().length(), getTargetAPI(), 2395e3b677a3041c86a7f860238dd1f5ff9d111b507Stephen Hines SlangVersion::CURRENT, mCodeGenOpts.OptimizationLevel); 2405e3b677a3041c86a7f860238dd1f5ff9d111b507Stephen Hines 2415e3b677a3041c86a7f860238dd1f5ff9d111b507Stephen Hines slangAssert(actualWrapperLen > 0); 2425e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines 2435e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines // Write out the bitcode wrapper. 2445e3b677a3041c86a7f860238dd1f5ff9d111b507Stephen Hines FormattedOutStream.write(reinterpret_cast<char*>(&wrapper), actualWrapperLen); 2455e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines 2465e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines // Write out the actual encoded bitcode. 2475e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines FormattedOutStream << Bitcode.str(); 2485e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines} 2495e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines 250fa6ef56a6ca3dc3061218a75a7e68e5357fcb82cLogan Chienbool Backend::HandleTopLevelDecl(clang::DeclGroupRef D) { 251de7ac1928633b51b8a147fcdda044793629ba8fbStephen Hines return mGen->HandleTopLevelDecl(D); 252462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 253462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2549ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::HandleTranslationUnit(clang::ASTContext &Ctx) { 25568fc02ca4a7235e2981be5eee4ad968a9d3928c0Zonr Chang HandleTranslationUnitPre(Ctx); 25668fc02ca4a7235e2981be5eee4ad968a9d3928c0Zonr Chang 2579ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->HandleTranslationUnit(Ctx); 258462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2599ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Here, we complete a translation unit (whole translation unit is now in LLVM 2609ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // IR). Now, interact with LLVM backend to generate actual machine code (asm 2619ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // or machine code, whatever.) 262462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2639ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Silently ignore if we weren't initialized for some reason. 26441ebf534161bb67f6207a070c1f6a895dc853408Zonr Chang if (!mpModule) 2659ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 266462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2679ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::Module *M = mGen->ReleaseModule(); 2689ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (!M) { 2699ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // The module has been released by IR gen on failures, do not double free. 2705abbe0e9ca2508260b627ffef2bf01e2554e8357Chris Wailes mpModule = nullptr; 2719ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 2729ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 2739ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 2746e6578a360497f78a181e63d7783422a9c9bfb15Stephen Hines slangAssert(mpModule == M && 2756e6578a360497f78a181e63d7783422a9c9bfb15Stephen Hines "Unexpected module change during LLVM IR generation"); 2769ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 2779ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Insert #pragma information into metadata section of module 2783fd0a94a5cf1656569b1aea07043cc63939dcb46Stephen Hines if (!mPragmas->empty()) { 2799ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao llvm::NamedMDNode *PragmaMetadata = 2809ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mpModule->getOrInsertNamedMetadata(Slang::PragmaMetadataName); 2813fd0a94a5cf1656569b1aea07043cc63939dcb46Stephen Hines for (PragmaList::const_iterator I = mPragmas->begin(), E = mPragmas->end(); 2829ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 2839ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) { 284c706907a8041faaa882f9bd87f1d1c1669023a62Stephen Hines llvm::SmallVector<llvm::Metadata*, 2> Pragma; 2859ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Name goes first 2869ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao Pragma.push_back(llvm::MDString::get(mLLVMContext, I->first)); 2879ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // And then value 2889ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao Pragma.push_back(llvm::MDString::get(mLLVMContext, I->second)); 28983f0c6261efc8f397fc2509e3862bc6d0eb1e1c4Shih-wei Liao 2909ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create MDNode and insert into PragmaMetadata 2919ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao PragmaMetadata->addOperand( 29218c8829f2bd3cbe0d02471588c6643c0a8c6ca3cStephen Hines llvm::MDNode::get(mLLVMContext, Pragma)); 293462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao } 2949ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 295462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 29668fc02ca4a7235e2981be5eee4ad968a9d3928c0Zonr Chang HandleTranslationUnitPost(mpModule); 297462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 2989ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create passes for optimization and code emission 299462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3009ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create and run per-function passes 3019ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CreateFunctionPasses(); 3029ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mPerFunctionPasses) { 3039ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerFunctionPasses->doInitialization(); 304462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3059ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao for (llvm::Module::iterator I = mpModule->begin(), E = mpModule->end(); 3069ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 3079ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) 3089ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (!I->isDeclaration()) 3099ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerFunctionPasses->run(*I); 310462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3119ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerFunctionPasses->doFinalization(); 3129ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 313462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3149ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao // Create and run module passes 3159ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao CreateModulePasses(); 3169ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao if (mPerModulePasses) 3179ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mPerModulePasses->run(*mpModule); 3189ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 3193a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang switch (mOT) { 3203a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Assembly: 3213a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Object: { 3226315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr if (!CreateCodeGenPasses()) 3239ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 324462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3259ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses->doInitialization(); 326462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3279ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao for (llvm::Module::iterator I = mpModule->begin(), E = mpModule->end(); 3289ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I != E; 3299ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao I++) 3306315f76e3cc6ff2d012d1183a0b030d4ff0dc808zonr if (!I->isDeclaration()) 3319ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses->run(*I); 3329ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao 3339ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mCodeGenPasses->doFinalization(); 3349ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao break; 3359ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3363a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_LLVMAssembly: { 337c706907a8041faaa882f9bd87f1d1c1669023a62Stephen Hines llvm::legacy::PassManager *LLEmitPM = new llvm::legacy::PassManager(); 338ee4016d1247d3fbe50822de279d3da273d8aef4cTim Murray LLEmitPM->add(llvm::createPrintModulePass(FormattedOutStream)); 3399ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao LLEmitPM->run(*mpModule); 3409ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao break; 341462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao } 3423a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Bitcode: { 343c706907a8041faaa882f9bd87f1d1c1669023a62Stephen Hines llvm::legacy::PassManager *BCEmitPM = new llvm::legacy::PassManager(); 3445e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines std::string BCStr; 3455e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines llvm::raw_string_ostream Bitcode(BCStr); 346c9454afec1649846512993d0ef65a9f868976bb4Chris Wailes unsigned int TargetAPI = getTargetAPI(); 3479b044ec938fd56355012851890c63974c8042c9fStephen Hines switch (TargetAPI) { 3489b044ec938fd56355012851890c63974c8042c9fStephen Hines case SLANG_HC_TARGET_API: 3499b044ec938fd56355012851890c63974c8042c9fStephen Hines case SLANG_HC_MR1_TARGET_API: 3509b044ec938fd56355012851890c63974c8042c9fStephen Hines case SLANG_HC_MR2_TARGET_API: { 3519b044ec938fd56355012851890c63974c8042c9fStephen Hines // Pre-ICS targets must use the LLVM 2.9 BitcodeWriter 3529b044ec938fd56355012851890c63974c8042c9fStephen Hines BCEmitPM->add(llvm_2_9::createBitcodeWriterPass(Bitcode)); 3539b044ec938fd56355012851890c63974c8042c9fStephen Hines break; 3549b044ec938fd56355012851890c63974c8042c9fStephen Hines } 3559b044ec938fd56355012851890c63974c8042c9fStephen Hines case SLANG_ICS_TARGET_API: 3569b044ec938fd56355012851890c63974c8042c9fStephen Hines case SLANG_ICS_MR1_TARGET_API: { 3579b044ec938fd56355012851890c63974c8042c9fStephen Hines // ICS targets must use the LLVM 2.9_func BitcodeWriter 3589b044ec938fd56355012851890c63974c8042c9fStephen Hines BCEmitPM->add(llvm_2_9_func::createBitcodeWriterPass(Bitcode)); 3599b044ec938fd56355012851890c63974c8042c9fStephen Hines break; 3609b044ec938fd56355012851890c63974c8042c9fStephen Hines } 3619b044ec938fd56355012851890c63974c8042c9fStephen Hines default: { 3629e3aa07a4456aad52920e0a7464954fe67cdbe01Chris Wailes if (TargetAPI != SLANG_DEVELOPMENT_TARGET_API && 3639e3aa07a4456aad52920e0a7464954fe67cdbe01Chris Wailes (TargetAPI < SLANG_MINIMUM_TARGET_API || 3649e3aa07a4456aad52920e0a7464954fe67cdbe01Chris Wailes TargetAPI > SLANG_MAXIMUM_TARGET_API)) { 3659b044ec938fd56355012851890c63974c8042c9fStephen Hines slangAssert(false && "Invalid target API value"); 3669b044ec938fd56355012851890c63974c8042c9fStephen Hines } 367d711dec946b6408791ca59eb98e363ef04bbd4aaStephen Hines // Switch to the 3.2 BitcodeWriter by default, and don't use 368d711dec946b6408791ca59eb98e363ef04bbd4aaStephen Hines // LLVM's included BitcodeWriter at all (for now). 369d711dec946b6408791ca59eb98e363ef04bbd4aaStephen Hines BCEmitPM->add(llvm_3_2::createBitcodeWriterPass(Bitcode)); 370d711dec946b6408791ca59eb98e363ef04bbd4aaStephen Hines //BCEmitPM->add(llvm::createBitcodeWriterPass(Bitcode)); 3719b044ec938fd56355012851890c63974c8042c9fStephen Hines break; 3729b044ec938fd56355012851890c63974c8042c9fStephen Hines } 3734cc499d6e5ec602309501873449c938af61170b2Stephen Hines } 3745e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines 3759ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao BCEmitPM->run(*mpModule); 3765e6d0d5a911fff0b7b4bce216a213a4cf8a811f5Stephen Hines WrapBitcode(Bitcode); 3779ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao break; 3789ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3793a9ca1f0d6bd8f12c2bb2adea51f95c255996180Zonr Chang case Slang::OT_Nothing: { 3809ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao return; 3819ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3829ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao default: { 3836e6578a360497f78a181e63d7783422a9c9bfb15Stephen Hines slangAssert(false && "Unknown output type"); 3849ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 3859ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao } 386462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3879ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao FormattedOutStream.flush(); 388462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 389462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3909ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::HandleTagDeclDefinition(clang::TagDecl *D) { 3919ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->HandleTagDeclDefinition(D); 392462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 393462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 3949ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liaovoid Backend::CompleteTentativeDefinition(clang::VarDecl *D) { 3959ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao mGen->CompleteTentativeDefinition(D); 396462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 397462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao 398462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei LiaoBackend::~Backend() { 3999ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mpModule; 4009ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mGen; 4019ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mPerFunctionPasses; 4029ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mPerModulePasses; 4039ef2f785e0cc490af678dfd685995dec787321ffShih-wei Liao delete mCodeGenPasses; 404462aefd62cc646d2ff753c1d003ef3cd7bbea26Shih-wei Liao} 405e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines 406e639eb5caa2c386b4a60659a4929e8a6141a2cbeStephen Hines} // namespace slang 407