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Move covariant thunk handling to AppendMethods too. 

llvm-svn: 90528
This commit is contained in:
Anders Carlsson 2009-12-04 02:52:22 +00:00
parent 86809cd8ab
commit 5b3ea9bf1c
1 changed files with 30 additions and 43 deletions
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73
clang/lib/CodeGen/CGVtable.cpp
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@ -292,45 +292,6 @@ public:
void AppendMethods();
void InstallThunks() {
for (BaseReturnTypesMapTy::const_iterator i = BaseReturnTypes.begin(),
e = BaseReturnTypes.end(); i != e; ++i) {
uint64_t Index = i->first;
GlobalDecl GD = Methods[Index];
const CXXMethodDecl *MD = cast<CXXMethodDecl>(GD.getDecl());
if (MD->isPure())
continue;
QualType BaseReturnType = i->second;
assert(Index == VtableBuilder::Index[GD] && "Thunk index mismatch!");
// Check if there is an adjustment for the 'this' pointer.
ThunkAdjustment ThisAdjustment;
ThisAdjustmentsMapTy::iterator it = ThisAdjustments.find(Index);
if (it != ThisAdjustments.end()) {
ThisAdjustment = it->second;
ThisAdjustments.erase(it);
}
// Construct the return adjustment.
QualType DerivedType =
MD->getType()->getAs<FunctionType>()->getResultType();
int64_t NonVirtualAdjustment =
getNVOffset(BaseReturnType, DerivedType) / 8;
int64_t VirtualAdjustment =
getVbaseOffset(BaseReturnType, DerivedType);
ThunkAdjustment ReturnAdjustment(NonVirtualAdjustment, VirtualAdjustment);
CovariantThunkAdjustment Adjustment(ThisAdjustment, ReturnAdjustment);
submethods[Index] = CGM.BuildCovariantThunk(MD, Extern, Adjustment);
}
BaseReturnTypes.clear();
for (PureVirtualMethodsSetTy::iterator i = PureVirtualMethods.begin(),
e = PureVirtualMethods.end(); i != e; ++i) {
GlobalDecl GD = *i;
@ -895,15 +856,41 @@ void VtableBuilder::AppendMethods() {
for (unsigned i = 0, e = Methods.size(); i != e; ++i) {
GlobalDecl GD = Methods[i];
const CXXMethodDecl *MD = cast<CXXMethodDecl>(GD.getDecl());
// Get the 'this' pointer adjustment.
ThunkAdjustment ThisAdjustment = ThisAdjustments.lookup(i);
if (!ThisAdjustment.isEmpty())
// Construct the return type adjustment.
ThunkAdjustment ReturnAdjustment;
QualType BaseReturnType = BaseReturnTypes.lookup(i);
if (!BaseReturnType.isNull() && !MD->isPure()) {
QualType DerivedType =
MD->getType()->getAs<FunctionType>()->getResultType();
int64_t NonVirtualAdjustment =
getNVOffset(BaseReturnType, DerivedType) / 8;
int64_t VirtualAdjustment =
getVbaseOffset(BaseReturnType, DerivedType);
ReturnAdjustment = ThunkAdjustment(NonVirtualAdjustment,
VirtualAdjustment);
}
if (!ReturnAdjustment.isEmpty()) {
// Build a covariant thunk.
CovariantThunkAdjustment Adjustment(ThisAdjustment, ReturnAdjustment);
submethods[i] = CGM.BuildCovariantThunk(MD, Extern, Adjustment);
} else if (!ThisAdjustment.isEmpty()) {
// Build a "regular" thunk.
submethods[i] = CGM.BuildThunk(GD, Extern, ThisAdjustment);
}
}
ThisAdjustments.clear();
BaseReturnTypes.clear();
D1(printf("============= combining methods\n"));
methods.insert(methods.end(), submethods.begin(), submethods.end());