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Allow DIBuilder::replaceVTableHolder() to work with temporary nodes,

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tested via the clang test CodeGenCXX/vtable-holder-self-reference.cpp .

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@228854 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Adrian Prantl 2015-02-11 17:45:10 +00:00
parent fe98d69578
commit 4058639603
1 changed files with 6 additions and 6 deletions
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12
lib/IR/DIBuilder.cpp
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@ -1229,12 +1229,12 @@ void DIBuilder::replaceVTableHolder(DICompositeType &T, DICompositeType VTableHo
if (T != VTableHolder)
return;
// Look for unresolved operands. T has dropped RAUW support and is already
// marked resolved, orphaning any cycles underneath it.
assert(T->isResolved() && "Expected self-reference to be resolved");
for (const MDOperand &O : T->operands())
if (auto *N = dyn_cast_or_null<MDNode>(O))
trackIfUnresolved(N);
// Look for unresolved operands. T will drop RAUW support, orphaning any
// cycles underneath it.
if (T->isResolved())
for (const MDOperand &O : T->operands())
if (auto *N = dyn_cast_or_null<MDNode>(O))
trackIfUnresolved(N);
}
void DIBuilder::replaceArrays(DICompositeType &T, DIArray Elements,