https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102043
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-08-25
Ever confirmed|0 |1
Known to fail| |11.2.1, 12.0, 7.5.0
Known to work| |4.3.5
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Testcase, FAILs at -O1, FRE concludes the idx(2:1:-1) load is always '2'. At
-O2 we unroll the loop mitigating the issue.
program main
integer, dimension (2) :: idx, a, b
a = (/ 0, 0 /)
idx = (/ 1, 2 /)
a(idx(2:1:-1)) = idx
if (a(1).ne.2) STOP 1
end program main
