24种增加gas的anti-pattern

P2 — {M consecutive jumpdests} → {jumpdest}, M≥2

P3 — {OP, pop} → {pop}, OP∈iszero,not,balance,calldataload,extcodesize,blockhash,mload,sload

P4 — {OP, pop} → {pop, pop}, OP∈add,sub,mul,div,sdiv,mod,smod,exp,sigextnd,lt,gt,slt,sgt,eq,and,or,xor,byte,sha3

P5 — {OP, pop} → {pop, pop, pop}, OP∈addmod,mulmod

P6 — {OP, pop} → delete, OP∈address,origin,caller,callvalue,calldatasize,codesize,gasprice,coinbase,timestamp,number,difficulty,gaslimit,pc,msize,gas

P7 — {swap1, swap(X), OP, dup(X), OP} → {dup2, swap(X+1), OP, OP}, 2≤X≤15,OP∈add,mul,and,or,xor

P8 — {OP, stop} → {stop}, OP can be any operation except jumpdest, jump, jumpi and all operations that change storage.

P9 — {swap(X), dup(X+1), swap1} → {dup1, swap(X+1)}, 1≤X≤15

P10 — {push(X), swap(Y), Y consecutive pops} → {Y consecutive pops, push(X)}, 1≤X≤32,1≤Y≤16

P11 — {swap(X), X+1 consecutive pops} → {X+1 consecutive pops}, 1≤X≤16

P12 — {swap(X), swap(Y), Y consecutive pops} → {X consecutive pops, swap(Y−X), (YX) consecutive pops}, 1≤X≤15,X<Y

P13 — {X consecutive push(N)s, Y consecutive pops} → {(XY) consecutive push(N)s, if X>Y; (YX) consecutive pops, otherwise}, 1≤N≤32

P14 — {X consecutive dup(N)s, Y consecutive pops} → {(XY) consecutive dup(N)s, ifX>Y; (YX) consecutive pops, otherwise}, 1≤N≤16

P15 — {dup(X), swap(X)} → {dup(X)}, 1≤X≤16

P16 — {swap1,swap2,…,swap(X),swap(X−1),…,swap1, X-1 consecutive pops} → {X-1 consecutive pops, swap1}, 2≤X≤16

P17 — {$swap$1, OP} → {OP}, OP∈add,mul,and,or,xor

P18 — {OP, iszero, iszero} → {OP}, OP∈lt,gt,slt,sgt,eq

P19 — {N consecutive push(X)，M consecutive swap(Y)} → {N consecutive push(X)}, Y<N,1≤X≤32,1≤Y≤16

P20 — {push(X), swap(Y), push(M), swap1} → {push(M), push(X), swap(Y+1)}, 1≤X≤32,1≤Y≤15,1≤M≤32

P21 — {consecutive Xpush(N), dup(Y), swap(Z)} → {combination of Xpush(N) and dup(M)}, Y<=X,Z<=X,M<=X,1≤N≤32,1≤Y≤16,1≤Z≤16,1≤M≤16

P22 — {swap(N), M consecutive OPs，(N+M) consecutive and same OP′} → {M consecutive OPs，(N+M) consecutive and same OP'}, OP∈push(X),dup(Y), OP′∈add,mul,and,or,xor,1≤X≤32,1≤N≤16,1≤Y≤16

P23 — {dup1, swap(X), dup2, swap1} → {dup1, dup2, swap(X+1)}, 1≤X≤15

P24 — {dup(X), swap(X−1), swap1, dup(X), swap1} → {dup(X), dup1, swap(X), swap2}, 3≤X≤16