| 1 | //===- DebugLocStream.cpp - DWARF debug_loc stream --------------*- C++ -*-===// |
|---|---|
| 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 "DebugLocStream.h" |
| 10 | #include "DwarfDebug.h" |
| 11 | #include "llvm/CodeGen/AsmPrinter.h" |
| 12 | |
| 13 | using namespace llvm; |
| 14 | |
| 15 | bool DebugLocStream::finalizeList(AsmPrinter &Asm) { |
| 16 | if (Lists.back().EntryOffset == Entries.size()) { |
| 17 | // Empty list. Delete it. |
| 18 | Lists.pop_back(); |
| 19 | return false; |
| 20 | } |
| 21 | |
| 22 | // Real list. Generate a label for it. |
| 23 | Lists.back().Label = Asm.createTempSymbol(Name: "debug_loc"); |
| 24 | return true; |
| 25 | } |
| 26 | |
| 27 | void DebugLocStream::finalizeEntry() { |
| 28 | if (Entries.back().ByteOffset != DWARFBytes.size()) |
| 29 | return; |
| 30 | |
| 31 | // The last entry was empty. Delete it. |
| 32 | Comments.erase(first: Comments.begin() + Entries.back().CommentOffset, |
| 33 | last: Comments.end()); |
| 34 | Entries.pop_back(); |
| 35 | |
| 36 | assert(Lists.back().EntryOffset <= Entries.size() && |
| 37 | "Popped off more entries than are in the list"); |
| 38 | } |
| 39 | |
| 40 | DebugLocStream::ListBuilder::~ListBuilder() { |
| 41 | if (!Locs.finalizeList(Asm)) |
| 42 | return; |
| 43 | V.emplace<Loc::Multi>(args&: ListIndex, args&: TagOffset); |
| 44 | } |
| 45 |