solidity/test/libyul/yulOptimizerTests/rematerialiser/no_remat_in_loop.yul

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{
// origin has zero cost and thus will be rematerialised,
// calldataload(0) has low cost and will not be rematerialised
let a := origin()
let b := calldataload(0)
let i := 0
let z := calldataload(9)
for {} lt(i, 10) {i := add(a, b)} {
// This will be rematerialised, because it stays inside
// the loop.
let x := calldataload(1)
mstore(9, x)
// No, because again one loop further down.
let y := calldataload(2)
for {} y {} {
// Again no.
mstore(12, z)
}
}
}
// ----
// step: rematerialiser
//
// {
// let a := origin()
// let b := calldataload(0)
// let i := 0
// let z := calldataload(9)
// for { } lt(i, 10) { i := add(origin(), b) }
// {
// let x := calldataload(1)
// mstore(9, calldataload(1))
// let y := calldataload(2)
// for { } y { }
// { mstore(12, z) }
// }
// }