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core/state, core/vm: minor uint256 related perf improvements #28944

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Merged
merged 2 commits into from
Feb 7, 2024
Merged

core/state, core/vm: minor uint256 related perf improvements #28944

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96bd930
minor `uint256.Int` related perf improvements
lmittmann Feb 7, 2024
6ff2850
cleanup
lmittmann Feb 7, 2024
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6 changes: 3 additions & 3 deletions core/state/state_object.go
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Original file line number Diff line number Diff line change
Expand Up @@ -93,7 +93,7 @@ type stateObject struct {

// empty returns whether the account is considered empty.
func (s *stateObject) empty() bool {
return s.data.Nonce == 0 && s.data.Balance.Sign() == 0 && bytes.Equal(s.data.CodeHash, types.EmptyCodeHash.Bytes())
return s.data.Nonce == 0 && s.data.Balance.IsZero() && bytes.Equal(s.data.CodeHash, types.EmptyCodeHash.Bytes())
}

// newObject creates a state object.
Expand Down Expand Up @@ -408,7 +408,7 @@ func (s *stateObject) commit() (*trienode.NodeSet, error) {
func (s *stateObject) AddBalance(amount *uint256.Int) {
// EIP161: We must check emptiness for the objects such that the account
// clearing (0,0,0 objects) can take effect.
if amount.Sign() == 0 {
if amount.IsZero() {
if s.empty() {
s.touch()
}
Expand All @@ -420,7 +420,7 @@ func (s *stateObject) AddBalance(amount *uint256.Int) {
// SubBalance removes amount from s's balance.
// It is used to remove funds from the origin account of a transfer.
func (s *stateObject) SubBalance(amount *uint256.Int) {
if amount.Sign() == 0 {
if amount.IsZero() {
return
}
s.SetBalance(new(uint256.Int).Sub(s.Balance(), amount))
Expand Down
4 changes: 2 additions & 2 deletions core/vm/evm.go
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Expand Up @@ -182,15 +182,15 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
return nil, gas, ErrDepth
}
// Fail if we're trying to transfer more than the available balance
if value.Sign() != 0 && !evm.Context.CanTransfer(evm.StateDB, caller.Address(), value) {
if !value.IsZero() && !evm.Context.CanTransfer(evm.StateDB, caller.Address(), value) {
return nil, gas, ErrInsufficientBalance
}
snapshot := evm.StateDB.Snapshot()
p, isPrecompile := evm.precompile(addr)
debug := evm.Config.Tracer != nil

if !evm.StateDB.Exist(addr) {
if !isPrecompile && evm.chainRules.IsEIP158 && value.Sign() == 0 {
if !isPrecompile && evm.chainRules.IsEIP158 && value.IsZero() {
// Calling a non existing account, don't do anything, but ping the tracer
if debug {
if evm.depth == 0 {
Expand Down
4 changes: 1 addition & 3 deletions core/vm/instructions.go
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Expand Up @@ -347,9 +347,7 @@ func opExtCodeSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext)
}

func opCodeSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
l := new(uint256.Int)
l.SetUint64(uint64(len(scope.Contract.Code)))
scope.Stack.push(l)
scope.Stack.push(new(uint256.Int).SetUint64(uint64(len(scope.Contract.Code))))
return nil, nil
}

Expand Down