[Bug middle-end/104971] [9/10/11 Regression] Optimisation for __builtin_ia32_readeflags corrupts the stack

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104971

--- Comment #7 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:25725506b85f478076770942d76799c54310c696

commit r12-7817-g25725506b85f478076770942d76799c54310c696
Author: Vladimir N. Makarov <vmaka...@redhat.com>
Date:   Fri Mar 25 12:22:08 2022 -0400

    [PR104971] LRA: check live hard regs to remove a dead insn

    LRA removes insn modifying sp for given PR test set.  We should also have
    checked living hard regs to prevent this.  The patch fixes this.

    gcc/ChangeLog:

            PR middle-end/104971
            * lra-lives.cc (process_bb_lives): Check hard_regs_live for hard
            regs to clear remove_p flag.