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Bitfield support.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26593 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey 2006-03-07 15:51:33 +00:00
parent 6f8aaf2cb0
commit 20c3ed8166
1 changed files with 14 additions and 2 deletions
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16
lib/CodeGen/DwarfWriter.cpp
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@ -1334,20 +1334,32 @@ DIE *DwarfWriter::NewType(DIE *Context, TypeDesc *TyDesc) {
if (CompileUnitDesc *File = MemberDesc->getFile()) {
CompileUnit *FileUnit = FindCompileUnit(File);
unsigned FileID = FileUnit->getID();
int Line = TyDesc->getLine();
int Line = MemberDesc->getLine();
Member->AddUInt(DW_AT_decl_file, 0, FileID);
Member->AddUInt(DW_AT_decl_line, 0, Line);
}
// FIXME - Bitfields not quite right but getting there.
uint64_t ByteSize = Size;
uint64_t ByteOffset = Offset;
if (TypeDesc *FromTy = MemberDesc->getFromType()) {
Member->AddDIEntry(DW_AT_type, DW_FORM_ref4,
NewType(Context, FromTy));
ByteSize = FromTy->getSize();
}
if (ByteSize != Size) {
ByteOffset -= Offset % ByteSize;
Member->AddUInt(DW_AT_byte_size, 0, ByteSize >> 3);
Member->AddUInt(DW_AT_bit_size, 0, Size % ByteSize);
Member->AddUInt(DW_AT_bit_offset, 0, Offset - ByteOffset);
}
// Add computation for offset.
DIEBlock *Block = new DIEBlock();
Block->AddUInt(DW_FORM_data1, DW_OP_plus_uconst);
Block->AddUInt(DW_FORM_udata, Offset >> 3);
Block->AddUInt(DW_FORM_udata, ByteOffset >> 3);
Block->ComputeSize(*this);
Member->AddBlock(DW_AT_data_member_location, 0, Block);