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[codeview] Remove redundant TypeTable lookup 

As written, the code should assert if this lookup would have ever
succeeded.  Without looking through composite types, the type graph
should be acyclic.

llvm-svn: 280168
This commit is contained in:
Reid Kleckner 2016-08-30 21:48:14 +00:00
parent 36865d6abf
commit dbaa61cbe3
1 changed files with 1 additions and 17 deletions
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18
llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp
View File

@ -1137,13 +1137,6 @@ TypeIndex CodeViewDebug::lowerTypeBasic(const DIBasicType *Ty) {
TypeIndex CodeViewDebug::lowerTypePointer(const DIDerivedType *Ty) {
TypeIndex PointeeTI = getTypeIndex(Ty->getBaseType());
// While processing the type being pointed to it is possible we already
// created this pointer type. If so, we check here and return the existing
// pointer type.
auto I = TypeIndices.find({Ty, nullptr});
if (I != TypeIndices.end())
return I->second;
// Pointers to simple types can use SimpleTypeMode, rather than having a
// dedicated pointer type record.
if (PointeeTI.isSimple() &&
@ -1264,16 +1257,7 @@ TypeIndex CodeViewDebug::lowerTypeModifier(const DIDerivedType *Ty) {
BaseTy = cast<DIDerivedType>(BaseTy)->getBaseType().resolve();
}
TypeIndex ModifiedTI = getTypeIndex(BaseTy);
// While processing the type being pointed to, it is possible we already
// created this modifier type. If so, we check here and return the existing
// modifier type.
auto I = TypeIndices.find({Ty, nullptr});
if (I != TypeIndices.end())
return I->second;
ModifierRecord MR(ModifiedTI, Mods);
return TypeTable.writeKnownType(MR);
return TypeTable.writeKnownType(ModifierRecord(ModifiedTI, Mods));
}
TypeIndex CodeViewDebug::lowerTypeFunction(const DISubroutineType *Ty) {