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Hello, It seems that ConstantFoldCastInstruction in ConstantFold.cpp folds inttoptr instruction with 0 as operand to a null pointer. It makes sense, when talking about a C-style frontend, as the C99 spec (6.3.2.3) states: "An integer constant expression with the value 0, or such an expression cast to type void *, is called a null pointer constant." On the other hand, some architectures

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