Remove unnecessary instanceof ConstantBooleanType in loop analysis
          
            #5390
        
      | Job | Run time | 
|---|---|
| 1m 32s | |
| 1m 56s | |
| 1m 42s | |
| 1m 50s | |
| 1m 24s | |
| 1m 27s | |
| 1m 23s | |
| 1m 49s | |
| 13m 3s | 
instanceof ConstantBooleanType in loop analysis
          
            #5390
        
| Job | Run time | 
|---|---|
| 1m 32s | |
| 1m 56s | |
| 1m 42s | |
| 1m 50s | |
| 1m 24s | |
| 1m 27s | |
| 1m 23s | |
| 1m 49s | |
| 13m 3s |