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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: Fri, 01 Apr 2022 14:21:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D105032

--- Comment #13 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Vladimir Makarov
<vmakarov@gcc.gnu.org>:

https://gcc.gnu.org/g:5f587c81bc558942d2988f5e2965a72471f5c202

commit r11-9754-g5f587c81bc558942d2988f5e2965a72471f5c202
Author: Vladimir N. Makarov <vmakarov@redhat.com>
Date:   Fri Apr 1 09:48:57 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.c (find_reload_regno_insns): Modify loop conditio=
n.

    gcc/testsuite/ChangeLog:

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