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Fix DW_AT_data_member_location for bit-fields. It points to the location of annonymous field that covers respective field.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86054 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2009-11-04 22:06:12 +00:00
parent 3d90dbee69
commit 33db508283
1 changed files with 12 additions and 5 deletions
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17
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -1137,6 +1137,9 @@ DIE *DwarfDebug::CreateMemberDIE(CompileUnit *DW_Unit, const DIDerivedType &DT){
AddSourceLine(MemberDie, &DT);
DIEBlock *MemLocationDie = new DIEBlock();
AddUInt(MemLocationDie, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
uint64_t Size = DT.getSizeInBits();
uint64_t FieldSize = Size;
if (DT.getTypeDerivedFrom().getTag() != dwarf::DW_TAG_array_type)
@ -1157,12 +1160,16 @@ DIE *DwarfDebug::CreateMemberDIE(CompileUnit *DW_Unit, const DIDerivedType &DT){
// Maybe we need to work from the other end.
if (TD->isLittleEndian()) Offset = FieldSize - (Offset + Size);
AddUInt(MemberDie, dwarf::DW_AT_bit_offset, 0, Offset);
}
DIEBlock *Block = new DIEBlock();
AddUInt(Block, 0, dwarf::DW_FORM_data1, dwarf::DW_OP_plus_uconst);
AddUInt(Block, 0, dwarf::DW_FORM_udata, DT.getOffsetInBits() >> 3);
AddBlock(MemberDie, dwarf::DW_AT_data_member_location, 0, Block);
// Here WD_AT_data_member_location points to the anonymous
// field that includes this bit field.
AddUInt(MemLocationDie, 0, dwarf::DW_FORM_udata, FieldOffset >> 3);
} else
// This is not a bitfield.
AddUInt(MemLocationDie, 0, dwarf::DW_FORM_udata, DT.getOffsetInBits() >> 3);
AddBlock(MemberDie, dwarf::DW_AT_data_member_location, 0, MemLocationDie);
if (DT.isProtected())
AddUInt(MemberDie, dwarf::DW_AT_accessibility, 0,