runtime: compute data and bss root work units in one loop
Change-Id: Ia730ca244c83db925879de206809938aeb969cdd
GitHub-Last-Rev:
711b8b8b935552eea6136242821444e83fc23d38
GitHub-Pull-Request: golang/go#64349
Reviewed-on: https://go-review.googlesource.com/c/go/+/544478
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>