------- Comment #6 from rguenth at gcc dot gnu dot org 2006-11-06 12:18 -------
But obviously for real operands, foo () won't clobber them. I.e. the following
also could be optimized but is not:
void foo (int *);
void bar (void)
{
int j;
int i;
i = 0;
for (j = 0; j < 10000; j++)
if (i)
foo (&i);
}
foo () will be never executed, so the clobbering of i is not "executed",
so we don't need i as PHI arg/result for the loop. This is what I'm looking
for as optimization.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29738
