--- Additional Comments From kazu at cs dot umass dot edu 2004-10-11 13:54 ---
Actually, we don't need movl $1, %eax at the end, either.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17931
--- Additional Comments From pinskia at gcc dot gnu dot org 2004-10-11 14:01
---
Confirmed, combine does not simplify:
(insn 14 13 15 0 (parallel [
(set (reg:QI 64)
(and:QI (reg:QI 63)
(const_int 1 [0x1])))
(clobber (reg:CC 17
--- Additional Comments From pinskia at gcc dot gnu dot org 2004-10-11 14:06
---
Note PPC's resulting asm is so much better:
lwz r3,0(r3)
li r0,1
cmpwi cr7,r3,0
blt- cr7,L4
rlwinm r0,r3,2,31,31
L4:
mr r3,r0
blr
But can be improved
