创建向量LLVM时出现问题

Question

I am trying to create a vector and return it as a value using llvm. Here is what my code looks like:

  Value *ArrayAST::codeGen() {
    Type *dType = Type::getDoubleTy(mContext);
    Type *vectorType = VectorType::get(dType, 4);
    Value *emptyVector = UndefValue::get(vectorType);
    Constant *index0 = Constant::getIntegerValue(dType, llvm::APInt(32, 0));
    Value *numberValue = numbers[0] -> codeGen(); // double 1.000000e+00
    Value *fullVector = InsertElementInst::Create(emptyVector, numberValue, index0);
    return fullVector;
  }

This generates the following IR code:

define <4 x double> @x() {
entry:
  ret <4 x double> <badref>
}

But, as you can see above, there is an issue: <badref> . And when I try to run it, it fails to build:

llvm-as: out.ll:3:21: error: expected type
  ret <4 x double> <badref>

I am new to LLVM and I am not quite sure what the best way to fix this is.

Edit

If it is helpful, all of the code is on GitHub here .

Edit 2

If I am not mistaken (I totally could be) the IR code should look like this:

define <4 x double> @x() {
entry:
  %tmp4 = insertelement <4 x double> undef, double 1.000000e+01, i32 0
  ret <4 x double> %tmp4
}

Answer 1

The issue was that I did not add the vector to my builder. The following did the trick for me:

Builder.Insert(fullVector);