------- Comment #3 from pinskia at gcc dot gnu dot org 2010-01-03 06:30 -------
Oh in fact I think the reason is the SRA issue. In that:
int
Cyc_string_ungetc (int ignore, struct _fat_ptr *sptr)
{
sptr->curr += 4294967295U;
}
Works.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|rtl-optimization |tree-optimization
Keywords| |missed-optimization
Summary|load-modify-store on x86 |SRA does not always work
|should be single instruction|
Version|unknown |4.5.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42586
