tree 6d6b8150e32a5ac5c90d11ddc42ba02162b05c20
parent a04580f71b98bdb12100da66c9975e9a1001b4d6
author Shih-Po Hung <shihpo.hung@sifive.com> 1744945031 +0800
committer GitHub <noreply@github.com> 1744945031 +0800
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[LV][NFC] Clean up tail-folding check for early-exit loops (#133931)

This patch moves the check for a single latch exit from computeMaxVF()
to LoopVectorizationLegality::canFoldTailByMasking(), as it duplicates
the logic when foldTailByMasking() returns false.

It also updates the NoScalarEpilogueNeeded logic to return false for
loops that are neither single-latch-exit nor early-exit. This avoids
applying tail-folding in unsupported cases and prevents triggering
assertions during analysis.