------- Comment #6 from alexandre dot nunes at gmail dot com 2009-04-14 20:11
-------
(In reply to comment #5)
> See the attached pqp.c file.
>
> [cut]
>
> With gcc 4.4.0 branch, built on 20090413, it fails:
>
This seems to be caused by the register order allocation. If I replace the
source code lines to operate in the reverse order:
hehe.y += pqp;
hehe.x += pqp;
Then 4.4.0 20090413 generates optimized code:
ldr r3, .L3
ldmia r3, {r1, r2} @ phole ldm
add r2, r0, r2
add r1, r0, r1
stmia r3, {r1, r2} @ phole stm
bx lr
While gcc 4.3.3 does not :-) Funny thing isn't it?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=9831
