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stop making PATypeHolder's so crazily.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52364 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-06-16 21:17:12 +00:00
parent 4e444436f2
commit a4477f9b31
1 changed files with 33 additions and 33 deletions
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66
lib/Linker/LinkModules.cpp
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@ -157,69 +157,73 @@ protected:
// RecursiveResolveTypes - This is just like ResolveTypes, except that it
// recurses down into derived types, merging the used types if the parent types
// are compatible.
static bool RecursiveResolveTypesI(const PATypeHolder &DestTy,
const PATypeHolder &SrcTy,
static bool RecursiveResolveTypesI(const Type *DstTy, const Type *SrcTy,
LinkerTypeMap &Pointers) {
const Type *SrcTyT = SrcTy.get();
const Type *DestTyT = DestTy.get();
if (DestTyT == SrcTyT) return false; // If already equal, noop
if (DstTy == SrcTy) return false; // If already equal, noop
// If we found our opaque type, resolve it now!
if (isa<OpaqueType>(DestTyT) || isa<OpaqueType>(SrcTyT))
return ResolveTypes(DestTyT, SrcTyT);
if (isa<OpaqueType>(DstTy) || isa<OpaqueType>(SrcTy))
return ResolveTypes(DstTy, SrcTy);
// Two types cannot be resolved together if they are of different primitive
// type. For example, we cannot resolve an int to a float.
if (DestTyT->getTypeID() != SrcTyT->getTypeID()) return true;
if (DstTy->getTypeID() != SrcTy->getTypeID()) return true;
// If neither type is abstract, then they really are just different types.
if (!DestTyT->isAbstract() && !SrcTyT->isAbstract())
if (!DstTy->isAbstract() && !SrcTy->isAbstract())
return true;
// Otherwise, resolve the used type used by this derived type...
switch (DestTyT->getTypeID()) {
switch (DstTy->getTypeID()) {
default:
return true;
case Type::FunctionTyID: {
const FunctionType *DstFT = cast<FunctionType>(DestTyT);
const FunctionType *SrcFT = cast<FunctionType>(SrcTyT);
const FunctionType *DstFT = cast<FunctionType>(DstTy);
const FunctionType *SrcFT = cast<FunctionType>(SrcTy);
if (DstFT->isVarArg() != SrcFT->isVarArg() ||
DstFT->getNumContainedTypes() != SrcFT->getNumContainedTypes())
return true;
for (unsigned i = 0, e = DstFT->getNumContainedTypes(); i != e; ++i)
if (RecursiveResolveTypesI(DstFT->getContainedType(i),
SrcFT->getContainedType(i), Pointers))
// Use TypeHolder's so recursive resolution won't break us.
PATypeHolder ST(SrcFT), DT(DstFT);
for (unsigned i = 0, e = DstFT->getNumContainedTypes(); i != e; ++i) {
const Type *SE = ST->getContainedType(i), *DE = DT->getContainedType(i);
if (SE != DE && RecursiveResolveTypesI(DE, SE, Pointers))
return true;
}
return false;
}
case Type::StructTyID: {
const StructType *DstST = cast<StructType>(DestTyT);
const StructType *SrcST = cast<StructType>(SrcTyT);
const StructType *DstST = cast<StructType>(DstTy);
const StructType *SrcST = cast<StructType>(SrcTy);
if (DstST->getNumContainedTypes() != SrcST->getNumContainedTypes())
return true;
for (unsigned i = 0, e = DstST->getNumContainedTypes(); i != e; ++i)
if (RecursiveResolveTypesI(DstST->getContainedType(i),
SrcST->getContainedType(i), Pointers))
PATypeHolder ST(SrcST), DT(DstST);
for (unsigned i = 0, e = DstST->getNumContainedTypes(); i != e; ++i) {
const Type *SE = ST->getContainedType(i), *DE = DT->getContainedType(i);
if (SE != DE && RecursiveResolveTypesI(DE, SE, Pointers))
return true;
}
return false;
}
case Type::ArrayTyID: {
const ArrayType *DAT = cast<ArrayType>(DestTy.get());
const ArrayType *SAT = cast<ArrayType>(SrcTy.get());
const ArrayType *DAT = cast<ArrayType>(DstTy);
const ArrayType *SAT = cast<ArrayType>(SrcTy);
if (DAT->getNumElements() != SAT->getNumElements()) return true;
return RecursiveResolveTypesI(DAT->getElementType(), SAT->getElementType(),
Pointers);
}
case Type::VectorTyID: {
const VectorType *DVT = cast<VectorType>(DestTy.get());
const VectorType *SVT = cast<VectorType>(SrcTy.get());
const VectorType *DVT = cast<VectorType>(DstTy);
const VectorType *SVT = cast<VectorType>(SrcTy);
if (DVT->getNumElements() != SVT->getNumElements()) return true;
return RecursiveResolveTypesI(DVT->getElementType(), SVT->getElementType(),
Pointers);
}
case Type::PointerTyID: {
const PointerType *DstPT = cast<PointerType>(DestTy.get());
const PointerType *SrcPT = cast<PointerType>(SrcTy.get());
const PointerType *DstPT = cast<PointerType>(DstTy);
const PointerType *SrcPT = cast<PointerType>(SrcTy);
if (DstPT->getAddressSpace() != SrcPT->getAddressSpace())
return true;
@ -235,21 +239,20 @@ static bool RecursiveResolveTypesI(const PATypeHolder &DestTy,
if (DstPT->isAbstract())
if (const Type *ExistingSrcTy = Pointers.lookup(DstPT))
return ExistingSrcTy != SrcPT;
// Otherwise, add the current pointers to the vector to stop recursion on
// this pair.
if (DstPT->isAbstract())
Pointers.insert(DstPT, SrcPT);
if (SrcPT->isAbstract())
Pointers.insert(SrcPT, DstPT);
return RecursiveResolveTypesI(DstPT->getElementType(),
SrcPT->getElementType(), Pointers);
}
}
}
static bool RecursiveResolveTypes(const PATypeHolder &DestTy,
const PATypeHolder &SrcTy) {
static bool RecursiveResolveTypes(const Type *DestTy, const Type *SrcTy) {
LinkerTypeMap PointerTypes;
return RecursiveResolveTypesI(DestTy, SrcTy, PointerTypes);
}
@ -312,10 +315,7 @@ static bool LinkTypes(Module *Dest, const Module *Src, std::string *Err) {
// two types: { int* } and { opaque* }
for (unsigned i = 0, e = DelayedTypesToResolve.size(); i != e; ++i) {
const std::string &Name = DelayedTypesToResolve[i];
PATypeHolder T1(SrcST->lookup(Name));
PATypeHolder T2(DestST->lookup(Name));
if (!RecursiveResolveTypes(T2, T1)) {
if (!RecursiveResolveTypes(SrcST->lookup(Name), DestST->lookup(Name))) {
// We are making progress!
DelayedTypesToResolve.erase(DelayedTypesToResolve.begin()+i);