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f1c527b5c1
If we don't know how to represent a .debug_loc entry, skip the entry entirely rather than emitting an empty one. Similarly, if a .debug_loc list has no entries, don't create the list. We still want to create the variables, just in an optimized-out form that doesn't have a DW_AT_location. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240244 91177308-0d34-0410-b5e6-96231b3b80d8
47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
//===- DebugLocStream.cpp - DWARF debug_loc stream --------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "DebugLocStream.h"
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#include "DwarfDebug.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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using namespace llvm;
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bool DebugLocStream::finalizeList(AsmPrinter &Asm) {
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if (Lists.back().EntryOffset == Entries.size()) {
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// Empty list. Delete it.
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Lists.pop_back();
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return false;
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}
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// Real list. Generate a label for it.
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Lists.back().Label = Asm.createTempSymbol("debug_loc");
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return true;
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}
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void DebugLocStream::finalizeEntry() {
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if (Entries.back().ByteOffset != DWARFBytes.size())
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return;
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// The last entry was empty. Delete it.
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Comments.erase(Comments.begin() + Entries.back().CommentOffset,
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Comments.end());
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Entries.pop_back();
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assert(Lists.back().EntryOffset <= Entries.size() &&
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"Popped off more entries than are in the list");
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}
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DebugLocStream::ListBuilder::~ListBuilder() {
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if (!Locs.finalizeList(Asm))
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return;
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V.initializeDbgValue(&MI);
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V.setDebugLocListIndex(ListIndex);
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}
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