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DebugInfo: Make DIDerivedType accessors more strict

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These accessors in `DIDerivedType` should only be called when `DbgNode`
really is a `MDDerivedType`, not just a `MDDerivedTypeBase`.  Assume
that it is.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234812 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith 2015-04-13 23:13:18 +00:00
parent b4f6438352
commit 7ca9328e16
1 changed files with 8 additions and 11 deletions
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19
include/llvm/IR/DebugInfo.h
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@ -314,24 +314,21 @@ public:
DITypeRef getTypeDerivedFrom() const { return get()->getBaseType(); }
/// \brief Return property node, if this ivar is associated with one.
MDNode *getObjCProperty() const {
if (auto *N = dyn_cast<MDDerivedType>(get()))
return dyn_cast_or_null<MDNode>(N->getExtraData());
return nullptr;
MDObjCProperty *getObjCProperty() const {
return dyn_cast_or_null<MDObjCProperty>(
cast<MDDerivedType>(get())->getExtraData());
}
DITypeRef getClassType() const {
assert(getTag() == dwarf::DW_TAG_ptr_to_member_type);
if (auto *N = dyn_cast<MDDerivedType>(get()))
return MDTypeRef(N->getExtraData());
return MDTypeRef();
return MDTypeRef(cast<MDDerivedType>(get())->getExtraData());
}
Constant *getConstant() const {
assert((getTag() == dwarf::DW_TAG_member) && isStaticMember());
if (auto *N = dyn_cast<MDDerivedType>(get()))
if (auto *C = dyn_cast_or_null<ConstantAsMetadata>(N->getExtraData()))
return C->getValue();
assert(getTag() == dwarf::DW_TAG_member && isStaticMember());
if (auto *C = cast_or_null<ConstantAsMetadata>(
cast<MDDerivedType>(get())->getExtraData()))
return C->getValue();
return nullptr;
}