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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/95685] Loop invariants can't be moved out of
 the loop
Date: Sun, 30 May 2021 22:31:24 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95685

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
With -funroll-loops on the trunk for the aarch64 target, I get no loop any
more:
bar and seems like good code:
.LFB0:
        .cfi_startproc
        and     w1, w1, 65535
        mov     w2, 8193
        tst     w0, 2
        eor     w3, w1, w2
        csel    w4, w1, w3, eq
        tst     w0, 4
        eor     w5, w4, w2
        and     w6, w5, 65535
        csel    w7, w6, w4, ne
        tst     w0, 8
        eor     w0, w7, w2
        and     w8, w0, 65535
        csel    w0, w8, w7, ne
        ret

Oh I recongize this loop too, it is from coremark.=