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NFC: DebugInfo: Refactor RangeSpanList to be a struct, like DebugLocStream::List

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Move these data structures closer together so their emission code can
eventually share more of its implementation.
This commit is contained in:
David Blaikie 2019-12-12 16:53:59 -08:00
parent ee634363a8
commit dc5cbd92c1
4 changed files with 11 additions and 19 deletions
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4
lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
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@ -503,10 +503,10 @@ void DwarfCompileUnit::addScopeRangeList(DIE &ScopeDIE,
const MCSymbol *RangeSectionSym =
TLOF.getDwarfRangesSection()->getBeginSymbol();
if (isDwoUnit())
addSectionDelta(ScopeDIE, dwarf::DW_AT_ranges, List.getSym(),
addSectionDelta(ScopeDIE, dwarf::DW_AT_ranges, List.Label,
RangeSectionSym);
else
addSectionLabel(ScopeDIE, dwarf::DW_AT_ranges, List.getSym(),
addSectionLabel(ScopeDIE, dwarf::DW_AT_ranges, List.Label,
RangeSectionSym);
}
}

11
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -2331,7 +2331,7 @@ static MCSymbol *emitRnglistsTableHeader(AsmPrinter *Asm,
Asm->OutStreamer->EmitLabel(Holder.getRnglistsTableBaseSym());
for (const RangeSpanList &List : Holder.getRangeLists())
Asm->EmitLabelDifference(List.getSym(), Holder.getRnglistsTableBaseSym(),
Asm->EmitLabelDifference(List.Label, Holder.getRnglistsTableBaseSym(),
4);
return TableEnd;
@ -2688,11 +2688,11 @@ void DwarfDebug::emitDebugARanges() {
/// Emit a single range list. We handle both DWARF v5 and earlier.
static void emitRangeList(DwarfDebug &DD, AsmPrinter *Asm,
const RangeSpanList &List) {
emitRangeList(DD, Asm, List.getSym(), List.getRanges(), List.getCU(),
emitRangeList(DD, Asm, List.Label, List.Ranges, *List.CU,
dwarf::DW_RLE_base_addressx, dwarf::DW_RLE_offset_pair,
dwarf::DW_RLE_startx_length, dwarf::DW_RLE_end_of_list,
llvm::dwarf::RangeListEncodingString,
List.getCU().getCUNode()->getRangesBaseAddress() ||
List.CU->getCUNode()->getRangesBaseAddress() ||
DD.getDwarfVersion() >= 5,
[](auto) {});
}
@ -2709,8 +2709,9 @@ void DwarfDebug::emitDebugRangesImpl(const DwarfFile &Holder, MCSection *Section
Asm->OutStreamer->SwitchSection(Section);
MCSymbol *TableEnd =
getDwarfVersion() < 5 ? nullptr : emitRnglistsTableHeader(Asm, Holder);
MCSymbol *TableEnd = nullptr;
if (getDwarfVersion() < 5)
TableEnd = emitRnglistsTableHeader(Asm, Holder);
for (const RangeSpanList &List : Holder.getRangeLists())
emitRangeList(*this, Asm, List);

2
lib/CodeGen/AsmPrinter/DwarfFile.cpp
View File

@ -126,6 +126,6 @@ void DwarfFile::addScopeLabel(LexicalScope *LS, DbgLabel *Label) {
std::pair<uint32_t, RangeSpanList *>
DwarfFile::addRange(const DwarfCompileUnit &CU, SmallVector<RangeSpan, 2> R) {
CURangeLists.push_back(
RangeSpanList(Asm->createTempSymbol("debug_ranges"), CU, std::move(R)));
RangeSpanList{Asm->createTempSymbol("debug_ranges"), &CU, std::move(R)});
return std::make_pair(CURangeLists.size() - 1, &CURangeLists.back());
}

13
lib/CodeGen/AsmPrinter/DwarfFile.h
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@ -37,21 +37,12 @@ struct RangeSpan {
const MCSymbol *End;
};
class RangeSpanList {
private:
struct RangeSpanList {
// Index for locating within the debug_range section this particular span.
MCSymbol *RangeSym;
MCSymbol *Label;
const DwarfCompileUnit *CU;
// List of ranges.
SmallVector<RangeSpan, 2> Ranges;
public:
RangeSpanList(MCSymbol *Sym, const DwarfCompileUnit &CU,
SmallVector<RangeSpan, 2> Ranges)
: RangeSym(Sym), CU(&CU), Ranges(std::move(Ranges)) {}
MCSymbol *getSym() const { return RangeSym; }
const DwarfCompileUnit &getCU() const { return *CU; }
const SmallVectorImpl<RangeSpan> &getRanges() const { return Ranges; }
};
class DwarfFile {