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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/112845] [11/12 Regression] ICE: in extract_insn, at
 recog.cc:2804 with -Os -fcf-protection -c since r8-3504
Date: Sat, 16 Dec 2023 00:38:14 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112845

--- Comment #7 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:87d013f7c877f944adbbaa4e94244baf990cb9f2

commit r12-10054-g87d013f7c877f944adbbaa4e94244baf990cb9f2
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Tue Dec 5 13:17:57 2023 +0100

    i386: Fix -fcf-protection -Os ICE due to movabsq peephole2 [PR112845]

    The following testcase ICEs in the movabsq $(i32 << shift), r64 peephol=
e2
    I've added a while back to use smaller code than movabsq if possible.
    If i32 is 0xfa1e0ff3 and shift is not divisible by 8, then it creates
    an invalid insn (as 0xfa1e0ff3 CONST_INT is not allowed as
    x86_64_immediate_operand nor x86_64_zext_immediate_operand), the peepho=
le2
    even triggers on it again and again (this time with shift 0) until it g=
ives
    up.

    The following patch fixes that.  As ix86_endbr_immediate_operand needs a
    CONST_INT and it is hopefully rare, I chose to use FAIL rather than
handling
    it in the condition (where I'd probably need to call ctz_hwi again etc.=
).

    2023-12-05  Jakub Jelinek  <jakub@redhat.com>

            PR target/112845
            * config/i386/i386.md (movabsq $(i32 << shift), r64 peephole2):
FAIL
            if the new immediate is ix86_endbr_immediate_operand.

    (cherry picked from commit e0786ca9a18c50ad08c40936b228e325193664b8)=