Florian Hahn 1395cd015f [VPlan] Support multi-exit loops in HCFG builder. ...

Update HCFG construction to support multi-exit loops. If there is no
unique exit block, map the middle block of the initial plan to the exit
block from the latch.

This further unifies HCFG construction and prepares for use to also
build an initial VPlan (VPlan0) for inner loops.

Effectively NFC as this isn't used on the default code path yet.

2025-01-25 21:55:15 +00:00

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