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DebugInfo: Gut DIDescriptor

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PR23080 is almost finished.  With this commit, there's no consequential
API in `DIDescriptor` and its subclasses.  What's left?

  - Default-constructed to `nullptr`.
  - Handy `const_cast<>` (constructed from `const`, but accessors are
    non-`const`).

I think the safe way to catch those is to delete the classes and fix
compile errors.  That'll be my next step, after I delete the `DITypeRef`
(etc.) wrapper around `MDTypeRef`.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235069 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2015-04-16 01:53:33 +00:00
parent 9c1aa1c021
commit b07e129e63
7 changed files with 19 additions and 69 deletions
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7
lib/CodeGen/AsmPrinter/DwarfUnit.cpp
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@ -1405,9 +1405,10 @@ void DwarfUnit::constructArrayTypeDIE(DIE &Buffer, DICompositeType CTy) {
// Add subranges to array type.
DIArray Elements = CTy->getElements();
for (unsigned i = 0, N = Elements.size(); i < N; ++i) {
DIDescriptor Element = Elements[i];
if (Element.getTag() == dwarf::DW_TAG_subrange_type)
constructSubrangeDIE(Buffer, cast<MDSubrange>(Element), IdxTy);
// FIXME: Should this really be such a loose cast?
if (auto *Element = dyn_cast_or_null<DebugNode>(Elements[i]))
if (Element->getTag() == dwarf::DW_TAG_subrange_type)
constructSubrangeDIE(Buffer, cast<MDSubrange>(Element), IdxTy);
}
}