[release-branch.go1.21] cmd/compile: absorb InvertFlags into Noov comparisons
Unfortunately, there isn't a single op that provides the resulting
computation.
At least, I couldn't find one.
Fixes #62506
Change-Id: I236f3965b827aaeb3d70ef9fe89be66b116494f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/526276
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@google.com>
(cherry picked from commit
fb5bdb4cc94d23209d77a73c4148b3f9fbb10173)
Reviewed-on: https://go-review.googlesource.com/c/go/+/526521
Reviewed-by: Than McIntosh <thanm@google.com>