[Bug target/47133] code size opportunity for boolean expression evaluation

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47133

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
5.4+ produces:
        ldr     r3, [r1]
        cmp     r3, #9
        ittte   eq
        ldreq   r0, [r1, #4]
        clzeq   r0, r0
        lsreq   r0, r0, #5
        movne   r0, #0
        bx      lr