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* We were forgetting to pass varargs arguments through a call
* Add a work around for bug PR56, gross but necessary for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9428 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -380,6 +380,17 @@ void DAE::RemoveDeadArgumentsFromFunction(Function *F) {
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DeadRetVal.erase(F);
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}
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// Work around LLVM bug PR56: the CWriter cannot emit varargs functions which
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// have zero fixed arguments.
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//
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// FIXME: once this bug is fixed in the CWriter, this hack should be removed.
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//
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bool ExtraArgHack = false;
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if (Params.empty() && FTy->isVarArg()) {
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ExtraArgHack = true;
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Params.push_back(Type::IntTy);
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}
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FunctionType *NFTy = FunctionType::get(RetTy, Params, FTy->isVarArg());
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// Create the new function body and insert it into the module...
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@ -400,6 +411,13 @@ void DAE::RemoveDeadArgumentsFromFunction(Function *F) {
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if (!DeadArguments.count(I)) // Remove operands for dead arguments
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Args.push_back(*AI);
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if (ExtraArgHack)
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Args.push_back(Constant::getNullValue(Type::IntTy));
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// Push any varargs arguments on the list
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for (; AI != CS.arg_end(); ++AI)
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Args.push_back(*AI);
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Instruction *New;
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if (InvokeInst *II = dyn_cast<InvokeInst>(Call)) {
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New = new InvokeInst(NF, II->getNormalDest(), II->getExceptionalDest(),
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