------- Comment #1 from pinskia at gcc dot gnu dot org 2008-08-21 19:32 -------
Confirmed, this is true for the Cell too. In fact is bad for the cell because
of:
stfs 1,16(1)
cmpwi 7,0,0
li 0,16
slwi 9,9,2
li 11,0
add 9,3,9
lvewx 0,1,0
vspltw 0,0,0
The store is not 40-50 cycles before the load so we have a LHS.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pinskia at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
GCC build triplet|powerpc64-linux |
GCC host triplet|powerpc64-linux |
Keywords| |missed-optimization
Last reconfirmed|0000-00-00 00:00:00 |2008-08-21 19:32:00
date| |
Summary|Autovectorization of |Autovectorization of small
|constant iteration loop |constant iteration loop
|degrades performance |degrades performance
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37194
