func TestStdlib(t *testing.T) {
// Load, parse and type-check the program.
t0 := time.Now()
var conf loader.Config
conf.SourceImports = true
if _, err := conf.FromArgs(allPackages(), true); err != nil {
t.Errorf("FromArgs failed: %v", err)
return
}
iprog, err := conf.Load()
if err != nil {
t.Fatalf("Load failed: %v", err)
}
t1 := time.Now()
runtime.GC()
var memstats runtime.MemStats
runtime.ReadMemStats(&memstats)
alloc := memstats.Alloc
// Create SSA packages.
var mode ssa.BuilderMode
// Comment out these lines during benchmarking. Approx SSA build costs are noted.
mode |= ssa.SanityCheckFunctions // + 2% space, + 4% time
mode |= ssa.GlobalDebug // +30% space, +18% time
prog := ssa.Create(iprog, mode)
t2 := time.Now()
// Build SSA.
prog.BuildAll()
t3 := time.Now()
runtime.GC()
runtime.ReadMemStats(&memstats)
numPkgs := len(prog.AllPackages())
if want := 140; numPkgs < want {
t.Errorf("Loaded only %d packages, want at least %d", numPkgs, want)
}
// Dump some statistics.
allFuncs := ssautil.AllFunctions(prog)
var numInstrs int
for fn := range allFuncs {
for _, b := range fn.Blocks {
numInstrs += len(b.Instrs)
}
}
// determine line count
var lineCount int
prog.Fset.Iterate(func(f *token.File) bool {
lineCount += f.LineCount()
return true
})
// NB: when benchmarking, don't forget to clear the debug +
// sanity builder flags for better performance.
t.Log("GOMAXPROCS: ", runtime.GOMAXPROCS(0))
t.Log("#Source lines: ", lineCount)
t.Log("Load/parse/typecheck: ", t1.Sub(t0))
t.Log("SSA create: ", t2.Sub(t1))
t.Log("SSA build: ", t3.Sub(t2))
// SSA stats:
t.Log("#Packages: ", numPkgs)
t.Log("#Functions: ", len(allFuncs))
t.Log("#Instructions: ", numInstrs)
t.Log("#MB: ", int64(memstats.Alloc-alloc)/1000000)
}
func TestStdlib(t *testing.T) {
if !*runStdlibTest {
t.Skip("skipping (slow) stdlib test (use --stdlib)")
}
// Load, parse and type-check the program.
var conf loader.Config
conf.SourceImports = true
if _, err := conf.FromArgs(allPackages(), true); err != nil {
t.Errorf("FromArgs failed: %v", err)
return
}
iprog, err := conf.Load()
if err != nil {
t.Fatalf("Load failed: %v", err)
}
// Create SSA packages.
prog := ssa.Create(iprog, 0)
prog.BuildAll()
numPkgs := len(prog.AllPackages())
if want := 140; numPkgs < want {
t.Errorf("Loaded only %d packages, want at least %d", numPkgs, want)
}
// Determine the set of packages/tests to analyze.
var testPkgs []*ssa.Package
for _, info := range iprog.InitialPackages() {
testPkgs = append(testPkgs, prog.Package(info.Pkg))
}
testmain := prog.CreateTestMainPackage(testPkgs...)
if testmain == nil {
t.Fatal("analysis scope has tests")
}
// Run the analysis.
config := &Config{
Reflection: false, // TODO(adonovan): fix remaining bug in rVCallConstraint, then enable.
BuildCallGraph: true,
Mains: []*ssa.Package{testmain},
}
// TODO(adonovan): add some query values (affects track bits).
t0 := time.Now()
result, err := Analyze(config)
if err != nil {
t.Fatal(err) // internal error in pointer analysis
}
_ = result // TODO(adonovan): measure something
t1 := time.Now()
// Dump some statistics.
allFuncs := ssautil.AllFunctions(prog)
var numInstrs int
for fn := range allFuncs {
for _, b := range fn.Blocks {
numInstrs += len(b.Instrs)
}
}
// determine line count
var lineCount int
prog.Fset.Iterate(func(f *token.File) bool {
lineCount += f.LineCount()
return true
})
t.Log("#Source lines: ", lineCount)
t.Log("#Instructions: ", numInstrs)
t.Log("Pointer analysis: ", t1.Sub(t0))
}