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Temporarily revert "Use a pointer to keep track of the skeleton unit for

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each normal unit" as it seems to be causing problems in the asan tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198197 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2013-12-30 03:12:31 +00:00
parent 1dd211d88d
commit 0661cbefb3
5 changed files with 32 additions and 58 deletions
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46
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@@ -773,6 +773,12 @@ DwarfCompileUnit *DwarfDebug::constructDwarfCompileUnit(DICompileUnit DIUnit) {
DIUnit.getLanguage());
NewCU->addString(Die, dwarf::DW_AT_name, FN);
// 2.17.1 requires that we use DW_AT_low_pc for a single entry point
// into an entity. We're using 0 (or a NULL label) for this. For
// split dwarf it's in the skeleton CU so omit it here.
if (!useSplitDwarf())
NewCU->addLabelAddress(Die, dwarf::DW_AT_low_pc, NULL);
// Define start line table label for each Compile Unit.
MCSymbol *LineTableStartSym =
Asm->GetTempSymbol("line_table_start", NewCU->getUniqueID());
@@ -831,10 +837,6 @@ DwarfCompileUnit *DwarfDebug::constructDwarfCompileUnit(DICompileUnit DIUnit) {
// skeleton units, not full units, if it's going to reference skeletons
DwarfInfoSectionSym);
// If we're splitting the dwarf then construct the skeleton CU now.
if (useSplitDwarf())
NewCU->setSkeleton(constructSkeletonCU(NewCU));
CUMap.insert(std::make_pair(DIUnit, NewCU));
CUDieMap.insert(std::make_pair(Die, NewCU));
return NewCU;
@@ -1080,9 +1082,7 @@ void DwarfDebug::finalizeModuleInfo() {
// Add CU specific attributes if we need to add any.
if (TheU->getUnitDie()->getTag() == dwarf::DW_TAG_compile_unit) {
// If we're splitting the dwarf out now that we've got the entire
// CU then add the dwo id to it.
DwarfCompileUnit *SkCU =
static_cast<DwarfCompileUnit *>(TheU->getSkeleton());
// CU then construct a skeleton CU based upon it.
if (useSplitDwarf()) {
// This should be a unique identifier when we want to build .dwp files.
uint64_t ID = 0;
@@ -1092,22 +1092,19 @@ void DwarfDebug::finalizeModuleInfo() {
}
TheU->addUInt(TheU->getUnitDie(), dwarf::DW_AT_GNU_dwo_id,
dwarf::DW_FORM_data8, ID);
// Now construct the skeleton CU associated.
DwarfCompileUnit *SkCU =
constructSkeletonCU(static_cast<DwarfCompileUnit *>(TheU));
SkCU->addUInt(SkCU->getUnitDie(), dwarf::DW_AT_GNU_dwo_id,
dwarf::DW_FORM_data8, ID);
} else {
// Attribute if we've emitted a range list for the compile unit, this
// will get constructed for the skeleton CU separately if we have one.
if (DwarfCURanges && TheU->getRanges().size())
addSectionLabel(Asm, TheU, TheU->getUnitDie(), dwarf::DW_AT_ranges,
Asm->GetTempSymbol("cu_ranges", TheU->getUniqueID()),
DwarfDebugRangeSectionSym);
}
// If we've requested ranges and have them emit a DW_AT_ranges attribute
// on the unit that will remain in the .o file, otherwise add a DW_AT_low_pc.
// FIXME: Also add a high pc if we can.
// FIXME: We should use ranges if we have multiple compile units.
DwarfCompileUnit *U = SkCU ? SkCU : static_cast<DwarfCompileUnit *>(TheU);
if (DwarfCURanges && TheU->getRanges().size())
addSectionLabel(Asm, U, U->getUnitDie(), dwarf::DW_AT_ranges,
Asm->GetTempSymbol("cu_ranges", U->getUniqueID()),
DwarfDebugRangeSectionSym);
else
U->addLocalLabelAddress(U->getUnitDie(), dwarf::DW_AT_low_pc,
TextSectionSym);
}
}
@@ -3000,6 +2997,15 @@ DwarfCompileUnit *DwarfDebug::constructSkeletonCU(const DwarfCompileUnit *CU) {
else
NewCU->addSectionOffset(Die, dwarf::DW_AT_GNU_addr_base, 0);
// Attribute if we've emitted a range list for the compile unit, this
// will get constructed for the skeleton CU separately if we have one.
if (DwarfCURanges && CU->getRanges().size())
addSectionLabel(Asm, NewCU, Die, dwarf::DW_AT_ranges,
Asm->GetTempSymbol("cu_ranges", CU->getUniqueID()),
DwarfDebugRangeSectionSym);
else
NewCU->addUInt(Die, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr, 0);
// DW_AT_stmt_list is a offset of line number information for this
// compile unit in debug_line section.
// FIXME: Should handle multiple compile units.