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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/111408] [14 Regression] Wrong code at -O2/3 on
 x86_64-linux-gnu since r14-2866-ge68a31549d9
Date: Wed, 13 Sep 2023 21:47:10 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111408

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
GCC 13.2:
        sarl    %cl, %eax
        movl    d(%rip), %ecx
        andl    $1, %eax
        andl    $31, %edx
        leal    -9(%rcx,%rcx), %ecx
        cmpl    %eax, %ecx

While the trunk:
        movl    a(%rip), %eax
        movl    b(%rip), %ecx
        movl    %eax, %edx
        andl    $31, %edx
        btl     %eax, %ecx

The trunk somehow missed the whole 2*d - 9 part ...=