1 //===---------- MachinePassManager.cpp ------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file contains the pass management machinery for machine functions. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "llvm/CodeGen/MachinePassManager.h" 14 #include "llvm/CodeGen/MachineFunction.h" 15 #include "llvm/CodeGen/MachineModuleInfo.h" 16 #include "llvm/IR/PassManagerImpl.h" 17 18 using namespace llvm; 19 20 namespace llvm { 21 template class AllAnalysesOn<MachineFunction>; 22 template class AnalysisManager<MachineFunction>; 23 template class PassManager<MachineFunction>; 24 25 Error MachineFunctionPassManager::run(Module &M, 26 MachineFunctionAnalysisManager &MFAM) { 27 // MachineModuleAnalysis is a module analysis pass that is never invalidated 28 // because we don't run any module pass in codegen pipeline. This is very 29 // important because the codegen state is stored in MMI which is the analysis 30 // result of MachineModuleAnalysis. MMI should not be recomputed. 31 auto &MMI = MFAM.getResult<MachineModuleAnalysis>(M); 32 33 (void)RequireCodeGenSCCOrder; 34 assert(!RequireCodeGenSCCOrder && "not implemented"); 35 36 // Add a PIC to verify machine functions. 37 if (VerifyMachineFunction) { 38 PassInstrumentation PI = MFAM.getResult<PassInstrumentationAnalysis>(M); 39 40 // No need to pop this callback later since MIR pipeline is flat which means 41 // current pipeline is the top-level pipeline. Callbacks are not used after 42 // current pipeline. 43 PI.pushBeforeNonSkippedPassCallback([&MFAM](StringRef PassID, Any IR) { 44 assert(any_cast<const MachineFunction *>(&IR)); 45 const MachineFunction *MF = any_cast<const MachineFunction *>(IR); 46 assert(MF && "Machine function should be valid for printing"); 47 std::string Banner = std::string("After ") + std::string(PassID); 48 verifyMachineFunction(&MFAM, Banner, *MF); 49 }); 50 } 51 52 for (auto &F : InitializationFuncs) { 53 if (auto Err = F(M, MFAM)) 54 return Err; 55 } 56 57 unsigned Idx = 0; 58 size_t Size = Passes.size(); 59 do { 60 // Run machine module passes 61 for (; MachineModulePasses.count(Idx) && Idx != Size; ++Idx) { 62 if (auto Err = MachineModulePasses.at(Idx)(M, MFAM)) 63 return Err; 64 } 65 66 // Finish running all passes. 67 if (Idx == Size) 68 break; 69 70 // Run machine function passes 71 72 // Get index range of machine function passes. 73 unsigned Begin = Idx; 74 for (; !MachineModulePasses.count(Idx) && Idx != Size; ++Idx) 75 ; 76 77 for (Function &F : M) { 78 // Do not codegen any 'available_externally' functions at all, they have 79 // definitions outside the translation unit. 80 if (F.hasAvailableExternallyLinkage()) 81 continue; 82 83 MachineFunction &MF = MMI.getOrCreateMachineFunction(F); 84 PassInstrumentation PI = MFAM.getResult<PassInstrumentationAnalysis>(MF); 85 86 for (unsigned I = Begin, E = Idx; I != E; ++I) { 87 auto *P = Passes[I].get(); 88 89 if (!PI.runBeforePass<MachineFunction>(*P, MF)) 90 continue; 91 92 // TODO: EmitSizeRemarks 93 PreservedAnalyses PassPA = P->run(MF, MFAM); 94 MFAM.invalidate(MF, PassPA); 95 PI.runAfterPass(*P, MF, PassPA); 96 } 97 } 98 } while (true); 99 100 for (auto &F : FinalizationFuncs) { 101 if (auto Err = F(M, MFAM)) 102 return Err; 103 } 104 105 return Error::success(); 106 } 107 108 } // namespace llvm 109