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-rw-r--r--clang/lib/CodeGen/CGExprCXX.cpp14
1 files changed, 11 insertions, 3 deletions
diff --git a/clang/lib/CodeGen/CGExprCXX.cpp b/clang/lib/CodeGen/CGExprCXX.cpp
index 2b0938ab84b..3a2882e24b6 100644
--- a/clang/lib/CodeGen/CGExprCXX.cpp
+++ b/clang/lib/CodeGen/CGExprCXX.cpp
@@ -867,6 +867,8 @@ llvm::Value *CodeGenFunction::EmitDynamicCast(llvm::Value *V,
ToVoid = true;
} else {
LTy = LTy->getPointerTo();
+
+ // FIXME: What if exceptions are disabled?
ThrowOnBad = true;
}
@@ -933,15 +935,21 @@ llvm::Value *CodeGenFunction::EmitDynamicCast(llvm::Value *V,
if (ThrowOnBad) {
BadCastBlock = createBasicBlock();
-
Builder.CreateCondBr(Builder.CreateIsNotNull(V), ContBlock, BadCastBlock);
EmitBlock(BadCastBlock);
- /// Call __cxa_bad_cast
+ /// Invoke __cxa_bad_cast
ResultType = llvm::Type::getVoidTy(VMContext);
const llvm::FunctionType *FBadTy;
FBadTy = llvm::FunctionType::get(ResultType, false);
llvm::Value *F = CGM.CreateRuntimeFunction(FBadTy, "__cxa_bad_cast");
- Builder.CreateCall(F)->setDoesNotReturn();
+ if (llvm::BasicBlock *InvokeDest = getInvokeDest()) {
+ llvm::BasicBlock *Cont = createBasicBlock("invoke.cont");
+ Builder.CreateInvoke(F, Cont, InvokeDest)->setDoesNotReturn();
+ EmitBlock(Cont);
+ } else {
+ // FIXME: Does this ever make sense?
+ Builder.CreateCall(F)->setDoesNotReturn();
+ }
Builder.CreateUnreachable();
}
}
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