[Bug rtl-optimization/100066] [11 Regression] ICE in lra_assign, at lra-assigns.c:1649

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100066

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

https://gcc.gnu.org/g:f99f64f69db49ce6343d79a39eab28dcc6b91865

commit r11-8180-gf99f64f69db49ce6343d79a39eab28dcc6b91865
Author: Vladimir N. Makarov <vmaka...@redhat.com>
Date:   Wed Apr 14 13:21:40 2021 -0400

    [PR100066] Check paradoxical subreg when splitting hard reg live range

    When splitting live range of a hard reg, LRA actually split multi-register
    containing the hard reg.  So we need to check the biggest used mode of the
hard reg on
    paradoxical subregister when the natural and the biggest
    mode are ordered.

    gcc/ChangeLog:

            PR rtl-optimization/100066
            * lra-constraints.c (split_reg): Check paradoxical_subreg_p for
            ordered modes when choosing splitting mode for hard reg.

    gcc/testsuite/ChangeLog:

            PR rtl-optimization/100066
            * gcc.target/i386/pr100066.c: New.