github.com/gocuntian/go@v0.0.0-20160610041250-fee02d270bf8/src/cmd/compile/internal/gc/ssa_test.go (about) 1 // Copyright 2015 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package gc 6 7 import ( 8 "bytes" 9 "internal/testenv" 10 "os/exec" 11 "path/filepath" 12 "runtime" 13 "strings" 14 "testing" 15 ) 16 17 // TODO: move all these tests elsewhere? 18 // Perhaps teach test/run.go how to run them with a new action verb. 19 func runTest(t *testing.T, filename string) { 20 doTest(t, filename, "run") 21 } 22 func buildTest(t *testing.T, filename string) { 23 doTest(t, filename, "build") 24 } 25 func doTest(t *testing.T, filename string, kind string) { 26 testenv.MustHaveGoBuild(t) 27 var stdout, stderr bytes.Buffer 28 cmd := exec.Command("go", kind, filepath.Join("testdata", filename)) 29 cmd.Stdout = &stdout 30 cmd.Stderr = &stderr 31 if err := cmd.Run(); err != nil { 32 t.Fatalf("Failed: %v:\nOut: %s\nStderr: %s\n", err, &stdout, &stderr) 33 } 34 if s := stdout.String(); s != "" { 35 t.Errorf("Stdout = %s\nWant empty", s) 36 } 37 if s := stderr.String(); strings.Contains(s, "SSA unimplemented") { 38 t.Errorf("Unimplemented message found in stderr:\n%s", s) 39 } 40 } 41 42 // TestShortCircuit tests OANDAND and OOROR expressions and short circuiting. 43 func TestShortCircuit(t *testing.T) { runTest(t, "short_ssa.go") } 44 45 // TestBreakContinue tests that continue and break statements do what they say. 46 func TestBreakContinue(t *testing.T) { runTest(t, "break_ssa.go") } 47 48 // TestTypeAssertion tests type assertions. 49 func TestTypeAssertion(t *testing.T) { runTest(t, "assert_ssa.go") } 50 51 // TestArithmetic tests that both backends have the same result for arithmetic expressions. 52 func TestArithmetic(t *testing.T) { 53 if runtime.GOARCH == "386" { 54 t.Skip("legacy 386 compiler can't handle this test") 55 } 56 runTest(t, "arith_ssa.go") 57 } 58 59 // TestFP tests that both backends have the same result for floating point expressions. 60 func TestFP(t *testing.T) { runTest(t, "fp_ssa.go") } 61 62 // TestArithmeticBoundary tests boundary results for arithmetic operations. 63 func TestArithmeticBoundary(t *testing.T) { runTest(t, "arithBoundary_ssa.go") } 64 65 // TestArithmeticConst tests results for arithmetic operations against constants. 66 func TestArithmeticConst(t *testing.T) { runTest(t, "arithConst_ssa.go") } 67 68 func TestChan(t *testing.T) { runTest(t, "chan_ssa.go") } 69 70 func TestCompound(t *testing.T) { runTest(t, "compound_ssa.go") } 71 72 func TestCtl(t *testing.T) { runTest(t, "ctl_ssa.go") } 73 74 func TestLoadStore(t *testing.T) { runTest(t, "loadstore_ssa.go") } 75 76 func TestMap(t *testing.T) { runTest(t, "map_ssa.go") } 77 78 func TestRegalloc(t *testing.T) { runTest(t, "regalloc_ssa.go") } 79 80 func TestString(t *testing.T) { runTest(t, "string_ssa.go") } 81 82 func TestDeferNoReturn(t *testing.T) { buildTest(t, "deferNoReturn_ssa.go") } 83 84 // TestClosure tests closure related behavior. 85 func TestClosure(t *testing.T) { runTest(t, "closure_ssa.go") } 86 87 func TestArray(t *testing.T) { runTest(t, "array_ssa.go") } 88 89 func TestAppend(t *testing.T) { runTest(t, "append_ssa.go") } 90 91 func TestZero(t *testing.T) { runTest(t, "zero_ssa.go") } 92 93 func TestAddressed(t *testing.T) { runTest(t, "addressed_ssa.go") } 94 95 func TestCopy(t *testing.T) { runTest(t, "copy_ssa.go") } 96 97 func TestUnsafe(t *testing.T) { runTest(t, "unsafe_ssa.go") } 98 99 func TestPhi(t *testing.T) { runTest(t, "phi_ssa.go") } 100 101 func TestSlice(t *testing.T) { runTest(t, "slice.go") } 102 103 func TestNamedReturn(t *testing.T) { runTest(t, "namedReturn.go") } 104 105 func TestDuplicateLoad(t *testing.T) { runTest(t, "dupLoad.go") }