solidity/test/libyul/yulOptimizerTests/commonSubexpressionEliminator/object_access.yul

object "main" {
    code {
        // Arguments to ``datasize`` and ``dataoffset`` need to be
        // literals. We cannot simplify their arguments, but we can
        // simplify them as a full expression.
        // ``datacopy`` does not have this restriction.
        let r := "abc"
        let a := datasize("abc")
        let x := dataoffset("abc")
        // should be replaced by a
        let y := datasize("abc")
        datacopy("abc", x, y)
        mstore(a, x)
    }
    data "abc" "Hello, World!"
}
// ====
// step: commonSubexpressionEliminator
// ----
// {
//     let r := "abc"
//     let a := datasize("abc")
//     let x := dataoffset("abc")
//     let y := a
//     datacopy(r, x, a)
//     mstore(a, x)
// }