[Bug target/23102] extra XORs generated on i686
dann at godzilla dot ics dot uci dot edu
gcc-bugzilla@gcc.gnu.org
Thu Aug 4 17:06:00 GMT 2005
------- Additional Comments From dann at godzilla dot ics dot uci dot edu 2005-08-04 17:06 -------
(In reply to comment #3)
> Try killing the peephole2 for this. Somebody elses cost-metric should force
> the constant into a register for the move ...
Killing the peephole2 would just produce the code produced for i386 as shown in
the original report.
What we want is something like
xorl %ecx, %ecx
movl %ecx, 3144(%eax)
movl %ecx, 3124(%eax)
... etc etc
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23102
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