solidity/test/libyul/yulOptimizerTests/reasoningBasedSimplifier/addmod.yul

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{
let x := calldataload(0)
let y := calldataload(32)
let z := calldataload(64)
let result := addmod(x, y, z)
// should be zero
if gt(result, z) { sstore(0, 1) }
// addmod is equal to mod of sum for small numbers
if and(and(lt(x, 1000), lt(y, 1000)), lt(z, 1000)) {
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// z3 <4.8.10 was able to infer that the
// condition below is always true.
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if eq(result, mod(add(x, y), z)) { sstore(0, 9) }
}
// but not in general
if and(and(gt(x, sub(0, 5)), gt(y, sub(0, 2))), eq(z, 3)) {
if eq(result, mod(add(x, y), z)) { sstore(0, 5) }
}
}
// ----
// step: reasoningBasedSimplifier
//
// {
// let x := calldataload(0)
// let y := calldataload(32)
// let z := calldataload(64)
// let result := addmod(x, y, z)
// if 0 { }
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// if and(and(lt(x, 1000), lt(y, 1000)), lt(z, 1000))
// {
// if eq(result, mod(add(x, y), z)) { sstore(0, 9) }
// }
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// if and(and(gt(x, sub(0, 5)), gt(y, sub(0, 2))), eq(z, 3)) { if 0 { } }
// }