44 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8//9// This file implements the mapping between various MIR data structures and10// 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 19using namespace llvm;20using namespace llvm::yaml;21 22FrameIndex::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.30Expected<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