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Subject: [Bug target/27212] vec_cmplt followed by a vec_all_ge, gives two vcmpgtuh instructions
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------- Comment #2 from pinskia at gcc dot gnu dot org  2006-04-19 16:49 -------
Actually this is a different issue than I orginally thought (just waking up).
(insn:TI 16 9 14 (parallel [
            (set (reg:CC 74 6)
                (unspec:CC [
                        (reg/v:V8HI 77 0 [orig:126 b ] [126])
                        (reg/v:V8HI 78 1 [orig:124 a ] [124])
                        (symbol_ref:SI ("*vcmpgtuh."))
                    ] 173))
            (clobber (reg:V8HI 90 13))
        ]) 666 {altivec_predicate_v8hi} (nil)
    (nil))

(insn 14 16 20 (set (reg:V8HI 77 0 [orig:121 D.1927 ] [121])
        (unspec:V8HI [
                (reg/v:V8HI 77 0 [orig:126 b ] [126])
                (reg/v:V8HI 78 1 [orig:124 a ] [124])
            ] 58)) 531 {altivec_vcmpgtuh} (nil)
    (nil))


The instructions are not even alike in RTL.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement
             Status|RESOLVED                    |UNCONFIRMED
          Component|c++                         |target
  GCC build triplet|4.0.0                       |
   GCC host triplet|4.0.0                       |
 GCC target triplet|4.0.0                       |powerpc-*-*
         Resolution|DUPLICATE                   |
            Summary|Altivec Comparison Peephole |vec_cmplt followed by a
                   |Bug                         |vec_all_ge, gives two
                   |                            |vcmpgtuh instructions


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27212