Ralender 5a155740c8 [TailDuplicator] Fix miss-compile with PHI referencing each other in TailBB (#194832) ...

Here is an example of when it happens
```
PredBB:
  A = add P0, 1
  ...
  BR TailBB

TailBB:
  P0 = PHI [A, PredBB]...
  P1 = PHI [P0, PredBB] ...
  BR PredBB, ...
```
when re-writing the PHIs, P1 would be replaced in TailBB with A instead
of P0 at the entry of PredBB

2026-04-30 18:28:01 +02:00

41 KiB

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