mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
37 lines
1.0 KiB
Plaintext
37 lines
1.0 KiB
Plaintext
{
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let x := calldataload(0)
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let y := calldataload(32)
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let z := calldataload(64)
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let result := addmod(x, y, z)
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// should be zero
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if gt(result, z) { sstore(0, 1) }
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// addmod is equal to mod of sum for small numbers
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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
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// condition below is always true.
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if eq(result, mod(add(x, y), z)) { sstore(0, 9) }
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}
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// but not in general
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if and(and(gt(x, sub(0, 5)), gt(y, sub(0, 2))), eq(z, 3)) {
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if eq(result, mod(add(x, y), z)) { sstore(0, 5) }
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}
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}
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// ----
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// step: reasoningBasedSimplifier
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//
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// {
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// let x := calldataload(0)
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// let y := calldataload(32)
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// let z := calldataload(64)
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// let result := addmod(x, y, z)
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// if 0 { }
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// if and(and(lt(x, 1000), lt(y, 1000)), lt(z, 1000))
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// {
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// if eq(result, mod(add(x, y), z)) { sstore(0, 9) }
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// }
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// if and(and(gt(x, sub(0, 5)), gt(y, sub(0, 2))), eq(z, 3)) { if 0 { } }
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// }
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