Function get_element_ptr_dynamic 

pub fn get_element_ptr_dynamic<'c, const N: usize>(
    context: &'c Context,
    ptr: Value<'c, '_>,
    indices: &[Value<'c, '_>; N],
    element_type: Type<'c>,
    result_type: Type<'c>,
    location: Location<'c>,
) -> Operation<'c>

Creates a llvm.getelementptr operation with dynamic indices.