Add beginnigs of rtti generation, wire up more of -fno-exceptions.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77751 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGCXX.cpp b/lib/CodeGen/CGCXX.cpp
index 62dabf7..356d318 100644
--- a/lib/CodeGen/CGCXX.cpp
+++ b/lib/CodeGen/CGCXX.cpp
@@ -490,10 +490,42 @@
return UniqueMangledName(Name.begin(), Name.end());
}
+llvm::Constant *CodeGenFunction::GenerateRtti(const CXXRecordDecl *RD) {
+ llvm::Type *Ptr8Ty;
+ Ptr8Ty = llvm::PointerType::get(llvm::Type::Int8Ty, 0);
+ llvm::Constant *rtti = llvm::Constant::getNullValue(Ptr8Ty);
+
+ if (!getContext().getLangOptions().Rtti)
+ return rtti;
+
+ llvm::SmallString<256> OutName;
+ llvm::raw_svector_ostream Out(OutName);
+ QualType ClassTy;
+ // FIXME: What is the design on getTagDeclType when it requires casting
+ // away const? mutable?
+ ClassTy = getContext().getTagDeclType(const_cast<CXXRecordDecl*>(RD));
+ mangleCXXRtti(ClassTy, getContext(), Out);
+ const char *Name = OutName.c_str();
+ llvm::GlobalVariable::LinkageTypes linktype;
+ linktype = llvm::GlobalValue::WeakAnyLinkage;
+ std::vector<llvm::Constant *> info;
+ assert (0 && "FIXME: implement rtti descriptor");
+ // FIXME: descriptor
+ info.push_back(llvm::Constant::getNullValue(Ptr8Ty));
+ assert (0 && "FIXME: implement rtti ts");
+ // FIXME: TS
+ info.push_back(llvm::Constant::getNullValue(Ptr8Ty));
+
+ llvm::Constant *C;
+ llvm::ArrayType *type = llvm::ArrayType::get(Ptr8Ty, info.size());
+ C = llvm::ConstantArray::get(type, info);
+ rtti = new llvm::GlobalVariable(CGM.getModule(), type, true, linktype, C,
+ Name);
+ rtti = llvm::ConstantExpr::getBitCast(rtti, Ptr8Ty);
+ return rtti;
+}
+
llvm::Value *CodeGenFunction::GenerateVtable(const CXXRecordDecl *RD) {
- const llvm::FunctionType *FTy;
- FTy = llvm::FunctionType::get(llvm::Type::VoidTy,
- std::vector<const llvm::Type*>(), false);
llvm::SmallString<256> OutName;
llvm::raw_svector_ostream Out(OutName);
QualType ClassTy;
@@ -512,7 +544,7 @@
m = llvm::Constant::getNullValue(Ptr8Ty);
int64_t offset = 0;
methods.push_back(m); offset += LLVMPointerWidth;
- methods.push_back(m); offset += LLVMPointerWidth;
+ methods.push_back(GenerateRtti(RD)); offset += LLVMPointerWidth;
for (meth_iter mi = RD->method_begin(), me = RD->method_end(); mi != me;
++mi) {
if (mi->isVirtual()) {
@@ -526,7 +558,6 @@
C = llvm::ConstantArray::get(type, methods);
llvm::Value *vtable = new llvm::GlobalVariable(CGM.getModule(), type, true,
linktype, C, Name);
- // CGM.CreateRuntimeFunction(FTy, Name);
vtable = Builder.CreateBitCast(vtable, Ptr8Ty);
// FIXME: finish layout for virtual bases
vtable = Builder.CreateGEP(vtable,