[Bug rtl-optimization/17931] andl and testb are not combined

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-10-11 14:01 -------
Confirmed, combine does not simplify:
(insn 14 13 15 0 (parallel [
            (set (reg:QI 64)
                (and:QI (reg:QI 63)
                    (const_int 1 [0x1])))
            (clobber (reg:CC 17 flags))
        ]) 206 {*andqi_1} (insn_list:REG_DEP_TRUE 13 (nil))
    (expr_list:REG_UNUSED (reg:CC 17 flags)
        (nil)))

(insn 15 14 16 0 (set (reg:CCZ 17 flags)
        (compare:CCZ (reg:QI 64)
            (const_int 0 [0x0]))) 6 {*cmpqi_ccno_1} (insn_list:REG_DEP_TRUE 14 (nil))
    (expr_list:REG_DEAD (reg:QI 64)
        (nil)))

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-10-11 14:01:46
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17931