[Bug target/16457] PowerPC - Combine two rldicr instructions into a single rlwinm.

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-03 15:41 
-------
What is happening is the following instruction is being split up:
(insn:HI 14 13 15 0 (parallel [
            (set (reg:DI 123)
                (and:DI (reg/v:DI 118 [ x ])
                    (const_int 4294967294 [0xfffffffe])))
            (clobber (scratch:CC))
        ]) 273 {anddi3} (nil)
    (expr_list:REG_DEAD (reg/v:DI 118 [ x ])
        (expr_list:REG_UNUSED (scratch:CC)
            (nil))))

It is being split up inefficently.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16457