------- Additional Comments From pinskia at gcc dot gnu dot org 2005-01-31
06:47 -------
Confirmed.
Part of the problem is recorded in PR 15618.
Note on the tcb we get better code at least for PPC:
cmpwi cr7,r3,0
subfic r0,r4,0
adde r4,r0,r4
li r3,0
beqlr- cr7
xori r3,r4,1
blr
VS (old code):
_f:
cmpwi cr7,r3,0
cmpwi cr6,r4,0
li r3,1
beq- cr7,L2
bnelr+ cr6
L2:
li r3,0
blr
But we should be able to get when PR 15618 gets fixed:
cmpwi cr7,r3,0
li r3,0
beqlr- cr7
xori r3,r4,1
blr
There is most likely a better way to optimize this on ppc but I cannot think of
it right now.
--
What |Removed |Added
----------------------------------------------------------------------------
BugsThisDependsOn| |15618
Severity|normal |enhancement
Status|UNCONFIRMED |NEW
Component|rtl-optimization |tree-optimization
Ever Confirmed| |1
Keywords| |missed-optimization
Last reconfirmed|0000-00-00 00:00:00 |2005-01-31 06:47:35
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19719
