core/vm, tests: implemented semi-jit vm

* changed stack and removed stack ptr. Let go decide on slice reuse.

1 files changed, 119 insertions, 0 deletions

diff --git a/core/vm/jit_test.go b/core/vm/jit_test.go
new file mode 100644
index 000000000..70432d47b
--- /dev/null
+++ b/core/vm/jit_test.go
@@ -0,0 +1,119 @@
+// Copyright 2014 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+package vm
+
+import (
+	"math/big"
+	"testing"
+	"time"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/state"
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethdb"
+)
+
+const maxRun = 1000
+
+type vmBench struct {
+	precompile bool // compile prior to executing
+	nojit      bool // ignore jit (sets DisbaleJit = true
+	forcejit   bool // forces the jit, precompile is ignored
+
+	code  []byte
+	input []byte
+}
+
+func runVmBench(test vmBench, b *testing.B) {
+	db, _ := ethdb.NewMemDatabase()
+	sender := state.NewStateObject(common.Address{}, db)
+
+	if test.precompile && !test.forcejit {
+		NewProgram(test.code)
+	}
+	env := NewEnv()
+
+	DisableJit = test.nojit
+	ForceJit = test.forcejit
+
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		context := NewContext(sender, sender, big.NewInt(100), big.NewInt(10000), big.NewInt(0))
+		context.Code = test.code
+		context.CodeAddr = &common.Address{}
+		_, err := New(env).Run(context, test.input)
+		if err != nil {
+			b.Error(err)
+			b.FailNow()
+		}
+	}
+}
+
+var benchmarks = map[string]vmBench{
+	"pushes": vmBench{
+		false, false, false,
+		common.Hex2Bytes("600a600a01600a600a01600a600a01600a600a01600a600a01600a600a01600a600a01600a600a01600a600a01600a600a01"), nil,
+	},
+}
+
+func BenchmarkPushes(b *testing.B) {
+	runVmBench(benchmarks["pushes"], b)
+}
+
+type Env struct {
+	gasLimit *big.Int
+	depth    int
+}
+
+func NewEnv() *Env {
+	return &Env{big.NewInt(10000), 0}
+}
+
+func (self *Env) Origin() common.Address { return common.Address{} }
+func (self *Env) BlockNumber() *big.Int  { return big.NewInt(0) }
+func (self *Env) AddStructLog(log StructLog) {
+}
+func (self *Env) StructLogs() []StructLog {
+	return nil
+}
+
+//func (self *Env) PrevHash() []byte      { return self.parent }
+func (self *Env) Coinbase() common.Address { return common.Address{} }
+func (self *Env) Time() uint64             { return uint64(time.Now().Unix()) }
+func (self *Env) Difficulty() *big.Int     { return big.NewInt(0) }
+func (self *Env) State() *state.StateDB    { return nil }
+func (self *Env) GasLimit() *big.Int       { return self.gasLimit }
+func (self *Env) VmType() Type             { return StdVmTy }
+func (self *Env) GetHash(n uint64) common.Hash {
+	return common.BytesToHash(crypto.Sha3([]byte(big.NewInt(int64(n)).String())))
+}
+func (self *Env) AddLog(log *state.Log) {
+}
+func (self *Env) Depth() int     { return self.depth }
+func (self *Env) SetDepth(i int) { self.depth = i }
+func (self *Env) Transfer(from, to Account, amount *big.Int) error {
+	return nil
+}
+func (self *Env) Call(caller ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	return nil, nil
+}
+func (self *Env) CallCode(caller ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
+	return nil, nil
+}
+func (self *Env) Create(caller ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, ContextRef) {
+	return nil, nil, nil
+}