https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87826
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-10-31
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Cleaned up:
int c;
void
foo (int *b)
{
int e;
for (e = 0; e < 16; ++e)
b[e] = c >> e * 8;
}
The testcase with UB in it if the function is ever called has the loop unrolled
by cunroll and we end up with out of bound shifts. Store-merging should just
punt in that case.
