runtime: move mksizeclasses.go to runtime/_mkmalloc

This will allow us to share code with the specialized malloc code
generator.

Change-Id: I6a6a696450a5039a957811fb06228122d494ddce
Reviewed-on: https://go-review.googlesource.com/c/go/+/700495
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Matloob <matloob@google.com>

diff --git a/src/internal/runtime/gc/sizeclasses.go b/src/internal/runtime/gc/sizeclasses.go
index e5d562f943adae68ed0067b6fe72edd9ac028cd7..3ef13834e4a4bd5e03c31a6562f00bb2a304db64 100644 (file)
--- a/src/internal/runtime/gc/sizeclasses.go
+++ b/src/internal/runtime/gc/sizeclasses.go
@@ -1,5 +1,5 @@
 // Code generated by mksizeclasses.go; DO NOT EDIT.
-//go:generate go run mksizeclasses.go
+//go:generate go -C ../../../runtime/_mkmalloc run mksizeclasses.go
 
 package gc
 

diff --git a/src/internal/runtime/gc/mksizeclasses.go b/src/runtime/_mkmalloc/mksizeclasses.go
similarity index 97%
rename from src/internal/runtime/gc/mksizeclasses.go
rename to src/runtime/_mkmalloc/mksizeclasses.go
index e7b848af023a08ad84497da460edf06f08ec4e78..a8d2d2db1ee1087808d11ca94ea8e8e6796e3635 100644 (file)
--- a/src/internal/runtime/gc/mksizeclasses.go
+++ b/src/runtime/_mkmalloc/mksizeclasses.go
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build ignore
-
 // Generate tables for small malloc size classes.
 //
 // See malloc.go for overview.
@@ -41,7 +39,7 @@ import (
        "os"
 )
 
-// Generate msize.go
+// Generate internal/runtime/gc/msize.go
 
 var stdout = flag.Bool("stdout", false, "write to stdout instead of sizeclasses.go")
 
@@ -50,7 +48,7 @@ func main() {
 
        var b bytes.Buffer
        fmt.Fprintln(&b, "// Code generated by mksizeclasses.go; DO NOT EDIT.")
-       fmt.Fprintln(&b, "//go:generate go run mksizeclasses.go")
+       fmt.Fprintln(&b, "//go:generate go -C ../../../runtime/_mkmalloc run mksizeclasses.go")
        fmt.Fprintln(&b)
        fmt.Fprintln(&b, "package gc")
        classes := makeClasses()
@@ -66,7 +64,7 @@ func main() {
        if *stdout {
                _, err = os.Stdout.Write(out)
        } else {
-               err = os.WriteFile("sizeclasses.go", out, 0666)
+               err = os.WriteFile("../../internal/runtime/gc/sizeclasses.go", out, 0666)
        }
        if err != nil {
                log.Fatal(err)