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From: "joelh at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/99102] [11 Regression] SVE: Wrong code with -O2
 -ftree-vectorize -march=armv8.2-a+sve -msve-vector-bits=256
Date: Thu, 25 Feb 2021 16:43:41 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99102

Joel Hutton <joelh at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2021-02-25

--- Comment #2 from Joel Hutton <joelh at gcc dot gnu.org> ---
Bisect shows

46c705e70e078f6a1920d92e49042125d5e18495 is the first bad commit
commit 46c705e70e078f6a1920d92e49042125d5e18495
Author: Richard Sandiford <richard.sandiford@arm.com>
Date:   Wed Nov 11 11:42:46 2020 +0000

    aarch64: Support SVE comparisons for unpacked integers

    This patch adds support for comparing unpacked SVE integer vectors,
    such as byte elements stored in the bottom bytes of halfword
    containers.  It also adds support for selects between unpacked
    SVE vectors (both integer and floating-point), since selects and
    compares are closely tied via the vcond optab interface.



is the offending commit.=