Nate Chandler 4135540f62 [NFC] PrunedLiveness: Permit postDomBlocks dupes. ...

According to the documentation,

```
It's ok if postDomBlocks has duplicates or extraneous blocks, as long
as they jointly post-dominate all live blocks that aren't on dead-end
paths.
```

Previously, though, duplicates resulted in trapping: each element of
`postDomBlocks` is pushed into a `BasicBlockWorklist`; when the second
occurrence of an element in `postDomBlocks` was encountered,
`BasicBlockWorklist::push` would trigger an assertion failure.

Here, `pushIfNotVisited` is called instead.

2025-01-13 17:00:30 -08:00

42 KiB

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