`rrc,rlc(x, y, false)` should be simplified to `x>>,<<y`

[whitequark]

Version and Platform (required):

• Binary Ninja Version: 4.1.5318-dev Personal (80699793)

Bug Description: HLIL displays expressions of the kind rrc.q(arg1, 1, false). Also, I think rrc inhibits some downstream analyses.

Steps To Reproduce: repro2.zip

Expected Behavior: Simplification of rrc(x, y, false) to x >> y and rlc(x, y, false) to x << y

Screenshots:

Additional Information: Similar reasoning and context as https://github.com/Vector35/binaryninja-api/issues/5448. (Thanks!)

[whitequark]

Here's another testcase: repro.zip

I would expect this to be just arg1 >> 3 on HLIL level.