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// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package inlheur
import (
"internal/testenv"
"os"
"path/filepath"
"strings"
"testing"
)
func TestDumpCallSiteScoreDump(t *testing.T) {
td := t.TempDir()
testenv.MustHaveGoBuild(t)
scenarios := []struct {
name string
promoted int
indirectlyPromoted int
demoted int
unchanged int
}{
{
name: "dumpscores",
promoted: 1,
indirectlyPromoted: 1,
demoted: 1,
unchanged: 5,
},
}
for _, scen := range scenarios {
dumpfile, err := gatherInlCallSitesScoresForFile(t, scen.name, td)
if err != nil {
t.Fatalf("dumping callsite scores for %q: error %v", scen.name, err)
}
var lines []string
if content, err := os.ReadFile(dumpfile); err != nil {
t.Fatalf("reading dump %q: error %v", dumpfile, err)
} else {
lines = strings.Split(string(content), "\n")
}
prom, indprom, dem, unch := 0, 0, 0, 0
for _, line := range lines {
switch {
case strings.TrimSpace(line) == "":
case !strings.Contains(line, "|"):
case strings.HasPrefix(line, "#"):
case strings.Contains(line, "PROMOTED"):
prom++
case strings.Contains(line, "INDPROM"):
indprom++
case strings.Contains(line, "DEMOTED"):
dem++
default:
unch++
}
}
showout := false
if prom != scen.promoted {
t.Errorf("testcase %q, got %d promoted want %d promoted",
scen.name, prom, scen.promoted)
showout = true
}
if indprom != scen.indirectlyPromoted {
t.Errorf("testcase %q, got %d indirectly promoted want %d",
scen.name, indprom, scen.indirectlyPromoted)
showout = true
}
if dem != scen.demoted {
t.Errorf("testcase %q, got %d demoted want %d demoted",
scen.name, dem, scen.demoted)
showout = true
}
if unch != scen.unchanged {
t.Errorf("testcase %q, got %d unchanged want %d unchanged",
scen.name, unch, scen.unchanged)
showout = true
}
if showout {
t.Logf(">> dump output: %s", strings.Join(lines, "\n"))
}
}
}
// gatherInlCallSitesScoresForFile builds the specified testcase 'testcase'
// from testdata/props passing the "-d=dumpinlcallsitescores=1"
// compiler option, to produce a dump, then returns the path of the
// newly created file.
func gatherInlCallSitesScoresForFile(t *testing.T, testcase string, td string) (string, error) {
t.Helper()
gopath := "testdata/" + testcase + ".go"
outpath := filepath.Join(td, testcase+".a")
dumpfile := filepath.Join(td, testcase+".callsites.txt")
run := []string{testenv.GoToolPath(t), "build",
"-gcflags=-d=dumpinlcallsitescores=1", "-o", outpath, gopath}
out, err := testenv.Command(t, run[0], run[1:]...).CombinedOutput()
t.Logf("run: %+v\n", run)
if err != nil {
return "", err
}
if err := os.WriteFile(dumpfile, out, 0666); err != nil {
return "", err
}
return dumpfile, err
}