DebugInfo: Use address pool forms in debug_rnglists
Save no relocations by reusing addresses from the address pool.
llvm-svn: 344836
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 5731541..f638087 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -424,24 +424,30 @@
? TLOF.getDwarfRnglistsSection()->getBeginSymbol()
: TLOF.getDwarfRangesSection()->getBeginSymbol();
- RangeSpanList List(Asm->createTempSymbol("debug_ranges"), std::move(Range));
+ HasRangeLists = true;
+
+ // Add the range list to the set of ranges to be emitted.
+ auto IndexAndList =
+ (DD->getDwarfVersion() < 5 && Skeleton ? Skeleton->DU : DU)
+ ->addRange((Skeleton ? Skeleton->BaseAddress : BaseAddress),
+ std::move(Range));
+
+ uint32_t Index = IndexAndList.first;
+ auto &List = *IndexAndList.second;
// Under fission, ranges are specified by constant offsets relative to the
// CU's DW_AT_GNU_ranges_base.
// FIXME: For DWARF v5, do not generate the DW_AT_ranges attribute under
// fission until we support the forms using the .debug_addr section
// (DW_RLE_startx_endx etc.).
- if (isDwoUnit()) {
- if (DD->getDwarfVersion() < 5)
- addSectionDelta(ScopeDIE, dwarf::DW_AT_ranges, List.getSym(),
- RangeSectionSym);
- } else {
+ if (isDwoUnit())
+ addSectionDelta(ScopeDIE, dwarf::DW_AT_ranges, List.getSym(),
+ RangeSectionSym);
+ else if (DD->getDwarfVersion() >= 5)
+ addUInt(ScopeDIE, dwarf::DW_AT_ranges, dwarf::DW_FORM_rnglistx, Index);
+ else
addSectionLabel(ScopeDIE, dwarf::DW_AT_ranges, List.getSym(),
RangeSectionSym);
- }
-
- // Add the range list to the set of ranges to be emitted.
- (Skeleton ? Skeleton : this)->CURangeLists.push_back(std::move(List));
}
void DwarfCompileUnit::attachRangesOrLowHighPC(