Provide predicated data type

[tancheng]

• Include predicate operand for each op
• Provide predicated data type
  • Partial predication should be leveraged for dataflow acceleration: https://mpslab-asu.github.io/publications/papers/Hamzeh2014DAC.pdf
  • This PR implements the data type embedded with the additional predicate bit
    • Then for the interpreter/reference/emulator/simulator, it should be able to run the IR before and after --leverage-predicated-value
      • If the predicate exists in the data type (after applying the --leverage-predicated-value), we need to respect that, i.e., perform the computation and also set the predicate correctly/correspondingly
      • If the predicate doesn't exist in the data type (without applying the --leverage-predicated-value), we just ignore the predicate-related stuff (i.e., set it as true by default) @Yfeng-44
  • We need to support phi node in the next PR

TODO in next PR:

• Separate data_mov and ctrl_mov
• Remove bb but provide ctrl_mov with live-in analysis

[ShangkunLi]

What is the difference in functionalities between MovOp and DataMovOp

[tancheng]

DataMov is for data delivery while I also provide CtrlMov.

I initially plan to have both inherited from same base Op, however, failed due to some cmake or tablegen issue. And later I found I need CtrlMov to represent the backward flow. So in the latest commit in this PR, I just give two separate MovOp.