internal/releasetargets: add openbsd/ppc64 target for Go 1.22 onwards

The release target list has two underlying sources: the allReleases map
and the allPorts map. The former is a small curated map, mostly used to
indicate which ports are first-class, and to set a few port properties.
The latter is generated from 'go tool dist list' output for each major
Go release.

Unfortunately, the logic in TargetsForGo1Point ended up not taking into
account that CL 547935 added allports/go1.22.txt with the openbsd/ppc64
port in it because the allReleases map didn't have an entry for go1.22.
As a result, we haven't been making releases for the openbsd/ppc64 port
as intended. :( Fix this by making sortedReleases consult both sources.

For golang/go#40561.
For golang/go#56001.

Change-Id: Icbabad6f7e2920c1b24a69e309d65aea77c9c461
Reviewed-on: https://go-review.googlesource.com/c/build/+/585216
LUCI-TryBot-Result: Go LUCI <[email protected]>
Auto-Submit: Dmitri Shuralyov <[email protected]>
Reviewed-by: Cherry Mui <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>

Author: dmitshur

internal/releasetargets/releases.txt

@@ -89,6 +89,99 @@ windows-arm64   windows    arm64      (cross-compiled via distpack)
 
 
 
+Targets for release 1.22
+================================================================================
+aix-ppc64       aix        ppc64      (cross-compiled via distpack)
+
+darwin-amd64    darwin     amd64      (cross-compiled via distpack)
+	First class port, Minimum macOS version is 10.15
+
+darwin-arm64    darwin     arm64      (cross-compiled via distpack)
+	First class port, Minimum macOS version is 11
+
+dragonfly-amd64 dragonfly  amd64      (cross-compiled via distpack)
+
+freebsd-386     freebsd    386        (cross-compiled via distpack)
+
+freebsd-amd64   freebsd    amd64      (cross-compiled via distpack)
+
+freebsd-arm     freebsd    arm        (cross-compiled via distpack)
+
+freebsd-arm64   freebsd    arm64      (cross-compiled via distpack)
+
+freebsd-riscv64 freebsd    riscv64    (cross-compiled via distpack)
+
+illumos-amd64   illumos    amd64      (cross-compiled via distpack)
+
+linux-386       linux      386        (cross-compiled via distpack)
+	First class port
+
+linux-amd64     linux      amd64      (cross-compiled via distpack)
+	First class port
+
+linux-arm64     linux      arm64      (cross-compiled via distpack)
+	First class port
+
+linux-armv6l    linux      arm        (cross-compiled via distpack)
+	First class port
+	Extra env: ["GOARM=6"]
+
+linux-loong64   linux      loong64    (cross-compiled via distpack)
+
+linux-mips      linux      mips       (cross-compiled via distpack)
+
+linux-mips64    linux      mips64     (cross-compiled via distpack)
+
+linux-mips64le  linux      mips64le   (cross-compiled via distpack)
+
+linux-mipsle    linux      mipsle     (cross-compiled via distpack)
+
+linux-ppc64     linux      ppc64      (cross-compiled via distpack)
+
+linux-ppc64le   linux      ppc64le    (cross-compiled via distpack)
+
+linux-riscv64   linux      riscv64    (cross-compiled via distpack)
+
+linux-s390x     linux      s390x      (cross-compiled via distpack)
+
+netbsd-386      netbsd     386        (cross-compiled via distpack)
+
+netbsd-amd64    netbsd     amd64      (cross-compiled via distpack)
+
+netbsd-arm      netbsd     arm        (cross-compiled via distpack)
+
+netbsd-arm64    netbsd     arm64      (cross-compiled via distpack)
+
+openbsd-386     openbsd    386        (cross-compiled via distpack)
+
+openbsd-amd64   openbsd    amd64      (cross-compiled via distpack)
+
+openbsd-arm     openbsd    arm        (cross-compiled via distpack)
+
+openbsd-arm64   openbsd    arm64      (cross-compiled via distpack)
+
+openbsd-ppc64   openbsd    ppc64      (cross-compiled via distpack)
+
+plan9-386       plan9      386        (cross-compiled via distpack)
+
+plan9-amd64     plan9      amd64      (cross-compiled via distpack)
+
+plan9-arm       plan9      arm        (cross-compiled via distpack)
+
+solaris-amd64   solaris    amd64      (cross-compiled via distpack)
+
+windows-386     windows    386        (cross-compiled via distpack)
+	First class port
+
+windows-amd64   windows    amd64      (cross-compiled via distpack)
+	First class port
+
+windows-arm     windows    arm        (cross-compiled via distpack)
+
+windows-arm64   windows    arm64      (cross-compiled via distpack)
+
+
+
 Targets for release 1.23
 ================================================================================
 aix-ppc64       aix        ppc64      (cross-compiled via distpack)
@@ -160,6 +253,8 @@ openbsd-arm     openbsd    arm        (cross-compiled via distpack)
 
 openbsd-arm64   openbsd    arm64      (cross-compiled via distpack)
 
+openbsd-ppc64   openbsd    ppc64      (cross-compiled via distpack)
+
 plan9-386       plan9      386        (cross-compiled via distpack)
 
 plan9-amd64     plan9      amd64      (cross-compiled via distpack)

internal/releasetargets/releasetargets.go

@@ -8,6 +8,7 @@ import (
 	"embed"
 	"fmt"
 	"io/fs"
+	"slices"
 	"sort"
 	"strings"
 	"sync"
@@ -140,8 +141,11 @@ func sortedReleases() []int {
 	for rel := range allReleases {
 		releases = append(releases, rel)
 	}
+	for rel := range allPorts {
+		releases = append(releases, rel)
+	}
 	sort.Ints(releases)
-	return releases
+	return slices.Compact(releases)
 }
 
 var unbuildableOSs = map[string]bool{

internal/releasetargets/releasetargets_test.go

@@ -18,9 +18,13 @@ import (
 var update = flag.Bool("update", false, "controls whether to update releases.txt")
 
 func TestReleaseTargets(t *testing.T) {
-	out := &bytes.Buffer{}
-	for _, release := range sortedReleases() {
-		printRelease(out, release, TargetsForGo1Point(release))
+	releases := sortedReleases()
+	if len(releases) < 3 {
+		t.Errorf("sortedReleases returned %v (len %d); allReleases map and allports/go1.n.txt files are expected to cover a minimum of 3 releases (prev + curr + tip)", releases, len(releases))
+	}
+	var out bytes.Buffer
+	for _, rel := range releases {
+		printRelease(&out, rel, TargetsForGo1Point(rel))
 	}
 	if *update {
 		if err := os.WriteFile("releases.txt", out.Bytes(), 0); err != nil {