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core/vm: optimze emit event using uint256.WriteToArray32

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cuiweixie 2025-10-18 23:33:30 +08:00
parent 0ec63272bf
commit a1334f0199
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GPG key ID: 16DF64EE15E495A3
2 changed files with 36 additions and 1 deletions
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2
core/vm/instructions.go
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@ -933,7 +933,7 @@ func makeLog(size int) executionFunc {
mStart, mSize := stack.pop(), stack.pop()
for i := 0; i < size; i++ {
addr := stack.pop()
topics[i] = addr.Bytes32()
addr.WriteToArray32((*[32]byte)(&topics[i]))
}
d := scope.Memory.GetCopy(mStart.Uint64(), mSize.Uint64())

35
core/vm/instructions_test.go
View file

@ -1008,3 +1008,38 @@ func TestOpCLZ(t *testing.T) {
}
}
}
func BenchmarkLog3(b *testing.B) {
var (
statedb, _ = state.New(types.EmptyRootHash, state.NewDatabaseForTesting())
evm = NewEVM(BlockContext{BlockNumber: big.NewInt(1), Time: 1, Random: &common.Hash{}}, statedb, params.MergedTestChainConfig, Config{})
startGas uint64 = 100_000_000
value = uint256.NewInt(0)
contract = NewContract(common.Address{}, common.Address{}, value, startGas, nil)
scope = &ScopeContext{
Contract: contract,
Memory: NewMemory(),
Stack: new(Stack),
}
)
// get log3 executor
exec := makeLog(3)
for b.Loop() {
// memory data
data := []byte("hello world, this is log data")
scope.Memory.Resize(1024)
scope.Memory.Set(0, uint64(len(data)), data)
// LOG3
// stack: mStart, mSize, topic1, topic2, topic3
scope.Stack.push(uint256.NewInt(1))
scope.Stack.push(uint256.NewInt(2))
scope.Stack.push(uint256.NewInt(3))
scope.Stack.push(uint256.NewInt(uint64(len(data)))) // mSize
scope.Stack.push(uint256.NewInt(0)) // mStart
_, err := exec(nil, evm, scope)
if err != nil {
b.Fatal(err)
}
}
}