[Bug rtl-optimization/82524] [7/8 Regression] expensive-optimizations produces wrong results

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82524

--- Comment #14 from Uroš Bizjak <ubizjak at gmail dot com> ---
Comment on attachment 42346
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42346
gcc8-pr82524.patch


>@@ -9058,7 +9059,8 @@ (define_insn "*andqi_ext_2"
>                              (const_int 8)
>                              (const_int 8)) 0)) 0))
>    (clobber (reg:CC FLAGS_REG))]
>-  ""
>+  "rtx_equal_p (operands[0], operands[1])
>+   || rtx_equal_p (operands[0], operands[1])"

Please note typo above, you have also to check operands[2].

>   "and{b}\t{%h2, %h0|%h0, %h2}"
>   [(set_attr "type" "alu")
>    (set_attr "mode" "QI")])