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Subject: [Bug middle-end/105032] Compiling inline ASM x86 causing GCC stuck
 in an endless loop with 100% CPU usage
Date: Wed, 30 Mar 2022 17:10:55 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105032

--- Comment #11 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Vladimir Makarov <vmakarov@gcc.gnu.or=
g>:

https://gcc.gnu.org/g:22b0476a814a4759bb68f38b9415624a0fe52a7d

commit r12-7924-g22b0476a814a4759bb68f38b9415624a0fe52a7d
Author: Vladimir N. Makarov <vmakarov@redhat.com>
Date:   Wed Mar 30 13:03:44 2022 -0400

    [PR105032] LRA: modify loop condition to find reload insns for hard reg
splitting

    When trying to split hard reg live range to assign hard reg to a reload
    pseudo, LRA searches for reload insns of the reload pseudo
    assuming a specific order of the reload insns.  This order is violated =
if
    reload involved in inheritance transformation. In such case, the loop u=
sed
    for reload insn searching can become infinite.  The patch fixes this.

    gcc/ChangeLog:

            PR middle-end/105032
            * lra-assigns.cc (find_reload_regno_insns): Modify loop conditi=
on.

    gcc/testsuite/ChangeLog:

            PR middle-end/105032
            * gcc.target/i386/pr105032.c: New.=