tree e53cc3bf90165f2b72d849ba58045f7472d1d80a
parent 1a3558341860357c2400e37773e5076bb3a51628
author Junchen Li <junchen.li@arm.com> 1594352363 +0800
committer Keith Randall <khr@golang.org> 1597694795 +0000

cmd/compile: optimize unsigned comparisons to 0

There are some architecture-independent rules in #21439, since an
unsigned integer >= 0 is always true and < 0 is always false. This CL
adds these optimizations to generic rules.

Updates #21439

Change-Id: Iec7e3040b761ecb1e60908f764815fdd9bc62495
Reviewed-on: https://go-review.googlesource.com/c/go/+/246617
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>