Add simplifications to `#cast Transmute [u8; 8] -> u64`

[dkcumming]

#804 introduces a rule to remove a thunk for transmute casts between [u8; 8] -> u64. However these large expressions can be simplified into ?AMOUNT:Int as they are entirely symbolic. This can be seen in test_process_close_account See details below.

The solution is likely to directly use Bytes2Int simplification rule from the p-token.md file:

mir-semantics/kmir/src/kmir/kdist/mir-semantics/symbolic/p-token.md

Lines 206 to 221 in 6a55e27

	// Amount Round-trip Simplifications:
	rule Bytes2Int(
	#bytesFrom(
	ListItem(Integer(AMOUNT &Int 255, 8, false))
	ListItem(Integer(AMOUNT >>Int 8 &Int 255, 8, false))
	ListItem(Integer(AMOUNT >>Int 8 >>Int 8 &Int 255, 8, false))
	ListItem(Integer(AMOUNT >>Int 8 >>Int 8 >>Int 8 &Int 255, 8, false))
	ListItem(Integer(AMOUNT >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255, 8, false))
	ListItem(Integer(AMOUNT >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255, 8, false))
	ListItem(Integer(AMOUNT >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255, 8, false))
	ListItem(Integer(AMOUNT >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255, 8, false))
	) ,
	LE,
	Unsigned
	) => AMOUNT
	[simplification, symbolic(AMOUNT), preserves-definedness]

(1 step)
443
   <generatedTop>
     <kmir>
       <k>
         #cast ( Range ( ListItem (Integer ( ?AMOUNT:Int &Int 255 , 8 , false ))
          ListItem (Integer ( ?AMOUNT:Int >>Int 8 &Int 255 , 8 , false ))
          ListItem (Integer ( ?AMOUNT:Int >>Int 8 >>Int 8 &Int 255 , 8 , false ))
          ListItem (Integer ( ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 &Int 255 , 8 , false ))
          ListItem (Integer ( ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255 , 8 , false ))
          ListItem (Integer ( ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255 , 8 , false ))
          ListItem (Integer ( ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255 , 8 , false ))
          ListItem (Integer ( ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255 , 8 , false ))
          ) , castKindTransmute , ty ( 600721 ) , ty ( 600142 ) )

Does not thunk but creates a the expression:

(1 step)
444
   <generatedTop>
     <kmir>
       <k>
         Integer ( ?AMOUNT:Int &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 >>Int 8 &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255 &Int 18446744073709551615 , 64 , false )

Which then is stored in the locals without simplification:

<locals>
  ListItem (typedValue ( Integer ( ?AMOUNT:Int &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 >>Int 8 &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255 +Int 256 *Int ?AMOUNT:Int >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 >>Int 8 &Int 255 &Int 18446744073709551615 , 64 , false ) , ty ( 600142 ) , mutabilityMut ))

But we want is:

ListItem (typedValue ( Integer ( ?AMOUNT:Int, 64 , false ) , ty ( 600142 ) , mutabilityMut ))