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If we use DW_AT_ranges we need to specify a base address that ranges

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are relative to in the compile unit. Currently let's just use 0...

Thanks to Greg Clayton for the catch!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200425 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2014-01-29 22:22:56 +00:00
parent c879504978
commit c55cb498c9
2 changed files with 12 additions and 2 deletions
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10
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@@ -1054,11 +1054,17 @@ void DwarfDebug::finalizeModuleInfo() {
// FIXME: We should use ranges if we have multiple compile units or
// allow reordering of code ala .subsections_via_symbols in mach-o.
DwarfCompileUnit *U = SkCU ? SkCU : static_cast<DwarfCompileUnit *>(TheU);
if (useCURanges() && TheU->getRanges().size())
if (useCURanges() && TheU->getRanges().size()) {
addSectionLabel(Asm, U, U->getUnitDie(), dwarf::DW_AT_ranges,
Asm->GetTempSymbol("cu_ranges", U->getUniqueID()),
DwarfDebugRangeSectionSym);
else
// A DW_AT_low_pc attribute may also be specified in combination with
// DW_AT_ranges to specify the default base address for use in location
// lists (see Section 2.6.2) and range lists (see Section 2.17.3).
U->addUInt(U->getUnitDie(), dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
0);
} else
U->addUInt(U->getUnitDie(), dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
0);
}