[Bug target/93828] [10 Regression] incorrect shufps instruction emitted for -march=k8

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93828

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Uros Bizjak <u...@gcc.gnu.org>:

https://gcc.gnu.org/g:f6088573d81d52e8573b704984fdb515e4391b1a

commit r10-6765-gf6088573d81d52e8573b704984fdb515e4391b1a
Author: Uros Bizjak <ubiz...@gmail.com>
Date:   Thu Feb 20 21:04:44 2020 +0100

    i386: Fix *vec_extractv2sf_1 and *vec_extractv2sf_1 shufps alternative
[PR93828]

    shufps moves two of the four packed single-precision floating-point values
    from *destination* operand (first operand) into the low quadword of the
    destination operand.  Match source operand to the destination.

        PR target/93828
        * config/i386/mmx.md (*vec_extractv2sf_1): Match source operand
        to destination operand for shufps alternative.
        (*vec_extractv2si_1): Ditto.

    testsuite/ChangeLog:

        PR target/93828
        * g++.target/i386/pr93828.C: New test.