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Fix a couple of Dwarf bugs.

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- Emit DW_AT_byte_size for struct and union of size zero.
- Emit DW_AT_declaration for forward type declaration.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60812 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2008-12-10 00:15:44 +00:00
parent aedc637c96
commit 94ea5be39f
4 changed files with 79 additions and 9 deletions
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21
lib/CodeGen/AsmPrinter/DwarfWriter.cpp
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@ -1774,14 +1774,25 @@ private:
}
}
// Add size if non-zero (derived types don't have a size.)
if (Size) AddUInt(&Buffer, DW_AT_byte_size, 0, Size);
// Add name if not anonymous or intermediate type.
if (!Name.empty()) AddString(&Buffer, DW_AT_name, DW_FORM_string, Name);
// Add source line info if available.
AddSourceLine(&Buffer, TyDesc->getFile(), TyDesc->getLine());
// Add size if non-zero (derived types might be zero-sized.)
if (Size)
AddUInt(&Buffer, DW_AT_byte_size, 0, Size);
else if (isa<CompositeTypeDesc>(TyDesc)) {
// If TyDesc is a composite type, then add size even if it's zero unless
// it's a forward declaration.
if (TyDesc->isForwardDecl())
AddUInt(&Buffer, DW_AT_declaration, DW_FORM_flag, 1);
else
AddUInt(&Buffer, DW_AT_byte_size, 0, 0);
}
// Add source line info if available and TyDesc is not a forward
// declaration.
if (!TyDesc->isForwardDecl())
AddSourceLine(&Buffer, TyDesc->getFile(), TyDesc->getLine());
}
/// NewCompileUnit - Create new compile unit and it's debug information entry.