Combine and-mask+icmp eq -> icmp ule when mask was all-ones in high bits

[LebedevRI]

Bugzilla Link	38791
Version	trunk
OS	Linux
CC	@davidbolvansky

Extended Description

Copied from #37471

Name: range using high bits
%masked = or i8 %arg, 192
%r = icmp ne i8 %masked, %arg
=>
%r = icmp ult i8 %arg, 192

https://rise4fun.com/Alive/lv5

[davidbolvansky]

Also
%masked = or i8 %arg, 192
%r = icmp eq i8 %masked, %arg
=>
%r = icmp uge i8 %arg, 192

[RKSimon]

Missing fold was fixed by 3cf54c5