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Check null NameMDNode elements.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77559 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2009-07-30 01:02:04 +00:00
parent 084d1ba5ad
commit e8861b840b
2 changed files with 9 additions and 5 deletions
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2
include/llvm/Metadata.h
View File

@ -168,7 +168,7 @@ public:
}
operator MetadataBase*() const {
return cast<MetadataBase>(getValPtr());
return dyn_cast_or_null<MetadataBase>(getValPtr());
}
};

12
lib/VMCore/AsmWriter.cpp
View File

@ -647,7 +647,8 @@ void SlotTracker::processModule() {
const NamedMDNode *NMD = I;
for (unsigned i = 0, e = NMD->getNumElements(); i != e; ++i) {
MDNode *MD = dyn_cast_or_null<MDNode>(NMD->getElement(i));
CreateMetadataSlot(MD);
if (MD)
CreateMetadataSlot(MD);
}
}
@ -1392,7 +1393,7 @@ void AssemblyWriter::printModule(const Module *M) {
Out << "!" << NMD->getName() << " = !{";
for (unsigned i = 0, e = NMD->getNumElements(); i != e; ++i) {
if (i) Out << ", ";
MDNode *MD = cast<MDNode>(NMD->getElement(i));
MDNode *MD = dyn_cast_or_null<MDNode>(NMD->getElement(i));
Out << '!' << Machine.getMetadataSlot(MD);
}
Out << "}\n";
@ -2047,8 +2048,11 @@ void Value::print(raw_ostream &OS, AssemblyAnnotationWriter *AAW) const {
OS << "!" << N->getName() << " = !{";
for (unsigned i = 0, e = N->getNumElements(); i != e; ++i) {
if (i) OS << ", ";
MDNode *MD = cast<MDNode>(N->getElement(i));
OS << '!' << SlotTable.getMetadataSlot(MD);
MDNode *MD = dyn_cast_or_null<MDNode>(N->getElement(i));
if (MD)
OS << '!' << SlotTable.getMetadataSlot(MD);
else
OS << "null";
}
OS << "}\n";
WriteMDNodes(OS, TypePrinter, SlotTable);