1 //===- MIRYamlMapping.cpp - Describe mapping between MIR and YAML ---------===// 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 implements the mapping between various MIR data structures and 10 // their corresponding YAML representation. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/CodeGen/MIRYamlMapping.h" 15 #include "llvm/CodeGen/MachineFrameInfo.h" 16 #include "llvm/Support/Error.h" 17 #include "llvm/Support/FormatVariadic.h" 18 19 using namespace llvm; 20 using namespace llvm::yaml; 21 22 FrameIndex::FrameIndex(int FI, const llvm::MachineFrameInfo &MFI) { 23 IsFixed = MFI.isFixedObjectIndex(FI); 24 if (IsFixed) 25 FI -= MFI.getObjectIndexBegin(); 26 this->FI = FI; 27 } 28 29 // Returns the value and if the frame index is fixed or not. 30 Expected<int> FrameIndex::getFI(const llvm::MachineFrameInfo &MFI) const { 31 int FI = this->FI; 32 if (IsFixed) { 33 if (unsigned(FI) >= MFI.getNumFixedObjects()) 34 return make_error<StringError>( 35 formatv("invalid fixed frame index {0}", FI).str(), 36 inconvertibleErrorCode()); 37 FI += MFI.getObjectIndexBegin(); 38 } 39 if (unsigned(FI + MFI.getNumFixedObjects()) >= MFI.getNumObjects()) 40 return make_error<StringError>(formatv("invalid frame index {0}", FI).str(), 41 inconvertibleErrorCode()); 42 return FI; 43 } 44