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DW_AT_stmt_list attribute attached with a compile unit encodes offset of line number information for this compile unit in debug_line section. This offset is always zero when only one compile unit is emitted in a object file.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99223 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2010-03-22 22:38:48 +00:00
parent 9d39e616cc
commit 0493f95a2c
4 changed files with 4 additions and 77 deletions
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18
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@@ -386,16 +386,6 @@ void DwarfDebug::addLabel(DIE *Die, unsigned Attribute, unsigned Form,
Die->addValue(Attribute, Form, Value);
}
/// addSectionOffset - Add a section offset label attribute data and value.
///
void DwarfDebug::addSectionOffset(DIE *Die, unsigned Attribute, unsigned Form,
const MCSymbol *Label,const MCSymbol *Section,
bool isEH) {
DIEValue *Value = new DIESectionOffset(Label, Section, isEH);
DIEValues.push_back(Value);
Die->addValue(Attribute, Form, Value);
}
/// addDelta - Add a label delta attribute data and value.
///
void DwarfDebug::addDelta(DIE *Die, unsigned Attribute, unsigned Form,
@@ -1666,10 +1656,10 @@ void DwarfDebug::constructCompileUnit(MDNode *N) {
unsigned ID = GetOrCreateSourceID(Dir, FN);
DIE *Die = new DIE(dwarf::DW_TAG_compile_unit);
// FIXME: Why getting the delta between two identical labels??
addSectionOffset(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4,
getTempLabel("section_line"), getTempLabel("section_line"),
false);
// DW_AT_stmt_list is a offset of line number information for this
// compile unit in debug_line section. It is always zero when only one
// compile unit is emitted in one object file.
addUInt(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, 0);
addString(Die, dwarf::DW_AT_producer, dwarf::DW_FORM_string,
DIUnit.getProducer());
addUInt(Die, dwarf::DW_AT_language, dwarf::DW_FORM_data1,