core/vm, tests: implemented semi-jit vm

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

tests/state_test.go

@@ -20,8 +20,25 @@ import (
 	"os"
 	"path/filepath"
 	"testing"
+
+	"github.com/ethereum/go-ethereum/core/vm"
 )
 
+func init() {
+	if os.Getenv("JITVM") == "true" {
+		vm.ForceJit = true
+	} else {
+		vm.DisableJit = true
+	}
+}
+
+func BenchmarkStateCall1024(b *testing.B) {
+	fn := filepath.Join(stateTestDir, "stCallCreateCallCodeTest.json")
+	if err := BenchVmTest(fn, bconf{"Call1024BalanceTooLow", true, false}, b); err != nil {
+		b.Error(err)
+	}
+}
+
 func TestStateSystemOperations(t *testing.T) {
 	fn := filepath.Join(stateTestDir, "stSystemOperationsTest.json")
 	if err := RunStateTest(fn, StateSkipTests); err != nil {