------- Comment #2 from pinskia at gcc dot gnu dot org 2008-05-11 00:53 -------
Note if we have the following source:
void link_error();
int foo(int n, int * p)
{
int i = 0;
p[0] = 0;
for (i = 0; i < 1024*1024; i++)
{
p[0]++;
}
if (p[0] != 1024*1024)
link_error ();
return 0;
}
Since PRE is doing LIM's job, we get rid of the loop at -O1 but miss it at -O2.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |major
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2008-05-11 00:53:36
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36204
