[Bug target/112304] cinc is not being used for (small) constant

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112304

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Trying 35 -> 16:
   35: r95:SI=cc:CC!=0
      REG_DEAD cc:CC
   16: x0:SI=r95:SI+0x2a
      REG_DEAD r95:SI
Failed to match this instruction:
(set (reg/i:SI 0 x0)
    (plus:SI (ne:SI (reg:CC 66 cc)
            (const_int 0 [0]))
        (const_int 42 [0x2a])))


vs:


Trying 9 -> 14:
    9: r97:SI=cc:CC!=0+r101:SI
      REG_DEAD cc:CC
      REG_DEAD r101:SI
   14: x0:SI=r97:SI
      REG_DEAD r97:SI
Successfully matched this instruction:
(set (reg/i:SI 0 x0)
    (plus:SI (ne:SI (reg:CC 66 cc)
            (const_int 0 [0]))
        (reg:SI 101)))