[Bug rtl-optimization/82259] missed optimization: use LEA to add 1 to flip the low bit when copying before AND with 1

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82259

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #7)
> Created attachment 51248 [details]
> patch for the eq issue
> 
> This is the patch for the eq issue

Of course after that we get:
(set (reg:QI 92)
    (xor:QI (subreg:QI (zero_extract:SI (reg:SI 93)
                (const_int 1 [0x1])
                (and:SI (reg:SI 94)
                    (const_int 255 [0xff]))) 0)
        (const_int 1 [0x1])))