[release-branch.go1.17] cmd/compile: remove incorrect arm,arm64 CMP->CMN transformations
These can go wrong when one of the operands is the minimum integer value.
Fixes #50867.
Change-Id: I238fe284f60c7ee5aeb9dc9a18e8b1578cdb77d0
Reviewed-on: https://go-review.googlesource.com/c/go/+/381318
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
(cherry picked from commit
b7b44b3173f151a2313da7072afd25de80511605)
Reviewed-on: https://go-review.googlesource.com/c/go/+/381474
Run-TryBot: Cherry Mui <cherryyz@google.com>