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clang-p2996/llvm/test/Transforms/LoopVectorize
Florian Hahn 6b8d19d2b5 Recommit "[VPlan] Switch to checking sinking legality for recurrences in VPlan."
This reverts the revert commit 3d8ed8b519.

The new version of the patch adds a set to avoid duplicating work in
isFixedOrderRecurrence, which was previously done through the removed
SinkAfter map.

Original commit message:
    Building on D142885 and D142589, retire the SinkAfter map from the
    recurrence handling code. It is replaced by checking whether it is
    possible to sink all users of a recurrence directly in VPlan. This
    results in simpler code overall and allows to handle additional cases
    (see the improvements in @test_crash).

    Depends on D142885.
    Depends on D142589.

    Reviewed By: Ayal

    Differential Revision: https://reviews.llvm.org/D142886
2023-04-20 09:31:16 +01:00
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