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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/114075] [14 Regression] s390x miscompilation
 since r14-322
Date: Wed, 28 Feb 2024 10:17:43 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114075

--- Comment #6 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Juergen Christ <jchrist@gcc.gnu.org>:

https://gcc.gnu.org/g:82ebfd35da49e5df87da132a7b8c41baeebc57b4

commit r14-9205-g82ebfd35da49e5df87da132a7b8c41baeebc57b4
Author: Juergen Christ <jchrist@linux.ibm.com>
Date:   Mon Feb 19 10:10:35 2024 +0100

    Only emulate integral vectors.

    The emulation via word mode tries to perform integer arithmetic on floa=
ting
    point values instead of floating point arithmetic.  This leads to
    mis-compilations.

    Failure occured on s390x on these existing test cases:
    gcc.dg/vect/tsvc/vect-tsvc-s112.c
    gcc.dg/vect/tsvc/vect-tsvc-s113.c
    gcc.dg/vect/tsvc/vect-tsvc-s119.c
    gcc.dg/vect/tsvc/vect-tsvc-s121.c
    gcc.dg/vect/tsvc/vect-tsvc-s131.c
    gcc.dg/vect/tsvc/vect-tsvc-s132.c
    gcc.dg/vect/tsvc/vect-tsvc-s2233.c
    gcc.dg/vect/tsvc/vect-tsvc-s421.c
    gcc.dg/vect/vect-alias-check-14.c
    gcc.target/s390/vector/partial/s390-vec-length-epil-run-1.c
    gcc.target/s390/vector/partial/s390-vec-length-epil-run-3.c
    gcc.target/s390/vector/partial/s390-vec-length-full-run-3.c

    gcc/ChangeLog:

            PR tree-optimization/114075

            * tree-vect-stmts.cc (vectorizable_operation): Don't emulate
floating
            point vectors

    Signed-off-by: Juergen Christ <jchrist@linux.ibm.com>=