[Bug tree-optimization/33761] tree-copyrename and tree-dominators pessimizes gzip SPEC score

[ubizjak at gmail dot com]

------- Comment #28 from ubizjak at gmail dot com  2008-09-06 15:26 -------
(In reply to comment #27)
> Also just noticed that offline copy of longest-match get extra move:
> .L15:   
>         movzbl  2(%eax), %edi   #, tmp87
>         leal    2(%eax), %ecx   #, scan.158
>         movl    %edi, %edx      # tmp87,
>         cmpb    2(%ebx), %dl    #,
>         jne     .L6     #,
>
> interesting :)

Perhaps due to ineffective regmove (similar to PR 37364)?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33761