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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/97821] [9/10/11/12 Regression] wrong code
 with -ftree-vectorize at -O1 on x86_64-pc-linux-gnu by r6-3608
Date: Tue, 01 Feb 2022 15:47:06 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97821

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 52325
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D52325&action=3Dedit
somewhat reduced testcase

Somewhat reduced testcase.

Note there are uninit diagnostics because we jump into the code skipping
initialization for 'bi', 'bf' and 'ax'.  Those might all be false positives
and the partitions we coalesce do not involve those variables (but their
init is conditionally skipped)

Partition 3: size 4 align 4
        bj      k
Partition 2: size 4 align 4
        be      av=