cmd/compile: run fmt test only in long mode

Update #26469

Change-Id: Id8b8d1c0db48374d5d3dc663a77187a73f60c9a5
Reviewed-on: https://go-review.googlesource.com/125037
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/cmd/compile/fmt_test.go

@@ -73,6 +73,9 @@ type File struct {
 }
 
 func TestFormats(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping in short mode")
+	}
 	testenv.MustHaveGoBuild(t) // more restrictive than necessary, but that's ok
 
 	// process all directories
@@ -702,32 +705,32 @@ var knownFormats = map[string]string{
 	"interface{} %v":                                  "",
 	"map[*cmd/compile/internal/gc.Node]*cmd/compile/internal/ssa.Value %v": "",
 	"map[cmd/compile/internal/ssa.ID]uint32 %v":                            "",
-	"reflect.Type %s":  "",
-	"rune %#U":         "",
-	"rune %c":          "",
-	"string %-*s":      "",
-	"string %-16s":     "",
-	"string %-6s":      "",
-	"string %.*s":      "",
-	"string %q":        "",
-	"string %s":        "",
-	"string %v":        "",
-	"time.Duration %d": "",
-	"time.Duration %v": "",
-	"uint %04x":        "",
-	"uint %5d":         "",
-	"uint %d":          "",
-	"uint %x":          "",
-	"uint16 %d":        "",
-	"uint16 %v":        "",
-	"uint16 %x":        "",
-	"uint32 %d":        "",
-	"uint32 %v":        "",
-	"uint32 %x":        "",
-	"uint64 %08x":      "",
-	"uint64 %d":        "",
-	"uint64 %x":        "",
-	"uint8 %d":         "",
-	"uint8 %x":         "",
-	"uintptr %d":       "",
+	"reflect.Type %s":                                                      "",
+	"rune %#U":                                                             "",
+	"rune %c":                                                              "",
+	"string %-*s":                                                          "",
+	"string %-16s":                                                         "",
+	"string %-6s":                                                          "",
+	"string %.*s":                                                          "",
+	"string %q":                                                            "",
+	"string %s":                                                            "",
+	"string %v":                                                            "",
+	"time.Duration %d":                                                     "",
+	"time.Duration %v":                                                     "",
+	"uint %04x":                                                            "",
+	"uint %5d":                                                             "",
+	"uint %d":                                                              "",
+	"uint %x":                                                              "",
+	"uint16 %d":                                                            "",
+	"uint16 %v":                                                            "",
+	"uint16 %x":                                                            "",
+	"uint32 %d":                                                            "",
+	"uint32 %v":                                                            "",
+	"uint32 %x":                                                            "",
+	"uint64 %08x":                                                          "",
+	"uint64 %d":                                                            "",
+	"uint64 %x":                                                            "",
+	"uint8 %d":                                                             "",
+	"uint8 %x":                                                             "",
+	"uintptr %d":                                                           "",
 }