[Bug rtl-optimization/97978] [11 Regression] ICE in lra_assign, at lra-assigns.c:1648 since r11-5066-gbe39636d9f68c437

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97978

--- Comment #4 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:15a47f437d2ba320aa9cb72986812f115498dbf9

commit r11-6509-g15a47f437d2ba320aa9cb72986812f115498dbf9
Author: Vladimir N. Makarov <vmaka...@redhat.com>
Date:   Wed Jan 6 14:48:53 2021 -0500

    [PR97978] LRA: Permit temporary allocation incorrectness after hard reg
split.

    LRA can crash when a hard register was split and the same hard register
    was assigned on the previous assignment sub-pass.  The following
    patch fixes this problem.

    gcc/ChangeLog:

            PR rtl-optimization/97978
            * lra-int.h (lra_hard_reg_split_p): New external.
            * lra.c (lra_hard_reg_split_p): New global.
            (lra): Set up lra_hard_reg_split_p after splitting a hard reg.
            * lra-assigns.c (lra_assign): Don't check allocation correctness
            after hard reg splitting.

    gcc/testsuite/ChangeLog:

            PR rtl-optimization/97978
            * gcc.target/i386/pr97978.c: New.