| Definition cannot reach a read | 0 |
| End of a basic block can be reached by multiple definitions | 0 |
| Phi has less than 2 immediately prior references | 0 |
| Phi node has less than two inputs | 0 |
| Phi read has less than 2 immediately prior references | 0 |
| Read can be reached from multiple definitions | 0 |
| Read cannot be reached from a definition | 0 |
| Read does not have a prior reference | 0 |
| Read has multiple prior references | 0 |
| Read is not dominated by a definition | 0 |