"GOARCH=amd64", "GOOS=linux", "GOPATH="+filepath.Join(tmpdir, "_gopath"))
	asmout, err := cmd.CombinedOutput()
	if err != nil {
		t.Fatalf("error %s output %s", err, asmout)
	}
	return asmout
}

func parseOutput(t *testing.T, td *ParsedTestData, asmout []byte) {
	scanner := bufio.NewScanner(bytes.NewReader(asmout))
	marker := regexp.MustCompile(`MOVQ \$([0-9]+), AX`)
	mark := -1
	td.marker_to_output = make(map[int][]string)