1 //===----------------------------------------------------------------------===// 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 #include "llvm/DWARFCFIChecker/DWARFCFIFunctionFrameAnalyzer.h" 10 11 using namespace llvm; 12 13 CFIFunctionFrameAnalyzer::~CFIFunctionFrameAnalyzer() { 14 assert(UIAs.empty() && 15 "all frames should be closed before the analysis finishes"); 16 } 17 18 void CFIFunctionFrameAnalyzer::startFunctionFrame( 19 bool IsEH, ArrayRef<MCCFIInstruction> Prologue) { 20 UIAs.emplace_back(&getContext(), MCII, IsEH, Prologue); 21 } 22 23 void CFIFunctionFrameAnalyzer::emitInstructionAndDirectives( 24 const MCInst &Inst, ArrayRef<MCCFIInstruction> Directives) { 25 assert(!UIAs.empty() && "if the instruction is in a frame, there should be " 26 "a analysis instantiated for it"); 27 UIAs.back().update(Inst, Directives); 28 } 29 30 void CFIFunctionFrameAnalyzer::finishFunctionFrame() { 31 assert(!UIAs.empty() && "there should be an analysis for each frame"); 32 UIAs.pop_back(); 33 } 34