tree fdebd560c0401c1939002f954cf6357993bd2c50
parent 21bb808eb4867b35b08fa962c7c25e812fcc8836
author Florian Hahn <flo@fhahn.com> 1635151211 +0100
committer Florian Hahn <flo@fhahn.com> 1635151978 +0100
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[VPlan] Do not create dummy entry block (NFC).

At the moment a dummy entry block is created at the beginning of VPlan
construction. This dummy block is later removed again.

This means it is not easy to identify the VPlan header block in a
general fashion, because during recipe creation it is the single
successor of the entry block, while later it is the entry block.

To make getting the header easier, just skip creating the dummy block.

Reviewed By: Ayal

Differential Revision: https://reviews.llvm.org/D111299