========= RENAME STRATEGY =========
Special chars ~!@#$%^*-_+=?/ get renamed to _XX, where XX is a hex representation of the symbol

a_x 
=> 
a_XXx

a_XXx 
=> 
a_XXXXx

This guarantees all symbols use a subset of the character set

Now, I need to rename duplicate symbols, so:

wire x
when p
  wire x

=>

wire x%0
when p
  wire x%1

We know that all new symbols are unique because they use a special character
At this point, all names are unique.

-- Bundle Expansion --
To deal with bundle expansion, use another different special character:

wire x : {a,b}

=>

wire x#a
wire x#b

-- Vector Expansion --

To deal with bundle expansion, use another different special character:

wire x : UInt<1>[3]

=>

wire x$0 : UInt<1>
wire x$1 : UInt<1>
wire x$2 : UInt<1>

-- Creating Temporaries --
To deal with creating temporaries, use another different special character:

node x = a + b * c
=>
node x!0 = b * c
node x!1 = a + x!0
node x = x!1

Finally, to deal with backends that only use subsets of the special characters, do another rename step to remove special characters (must remove $ again!)

ASCII Hex
_ 5F __
~ 7E _A
! 21 _B
@ 40 _C
# 23 _D
$ 24 _E
% 25 _F
^ 5E _G
* 2A _H
- 2D _I
+ 2B _J
= 3D _K
? 3F _L
/ 2F _M