1 //===- DebugLocStream.cpp - DWARF debug_loc stream --------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "DebugLocStream.h" 11 #include "DwarfDebug.h" 12 #include "llvm/CodeGen/AsmPrinter.h" 13 14 using namespace llvm; 15 finalizeList(AsmPrinter & Asm)16bool DebugLocStream::finalizeList(AsmPrinter &Asm) { 17 if (Lists.back().EntryOffset == Entries.size()) { 18 // Empty list. Delete it. 19 Lists.pop_back(); 20 return false; 21 } 22 23 // Real list. Generate a label for it. 24 Lists.back().Label = Asm.createTempSymbol("debug_loc"); 25 return true; 26 } 27 finalizeEntry()28void DebugLocStream::finalizeEntry() { 29 if (Entries.back().ByteOffset != DWARFBytes.size()) 30 return; 31 32 // The last entry was empty. Delete it. 33 Comments.erase(Comments.begin() + Entries.back().CommentOffset, 34 Comments.end()); 35 Entries.pop_back(); 36 37 assert(Lists.back().EntryOffset <= Entries.size() && 38 "Popped off more entries than are in the list"); 39 } 40 ~ListBuilder()41DebugLocStream::ListBuilder::~ListBuilder() { 42 if (!Locs.finalizeList(Asm)) 43 return; 44 V.initializeDbgValue(&MI); 45 V.setDebugLocListIndex(ListIndex); 46 } 47