solidity/test/libyul/yulOptimizerTests/controlFlowSimplifier/switch_remove_empty_cases.yul

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{
let y := 200
switch calldataload(0)
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case 0 { }
case 1 { y := 9 }
default { }
}
// ----
// step: controlFlowSimplifier
//
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// {
// let y := 200
// if eq(1, calldataload(0)) { y := 9 }
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// }