http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55187
Jan Hubicka <hubicka at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2012-11-05 Summary|[4.8 regression] FAIL: |[4.8 regression] not able |gcc.dg/autopar/pr49960.c |to determine number if |scan-tree-dump-times |iterations of loops with |parloops "SUCCESS: may be |perfect nest. |parallelized" 0 | Ever Confirmed|0 |1 Severity|normal |enhancement --- Comment #3 from Jan Hubicka <hubicka at gcc dot gnu.org> 2012-11-05 16:27:17 UTC --- I fixed autopar testcase by http://gcc.gnu.org/ml/gcc-patches/2012-11/msg00368.html It was working by accident, not by design. We however really miss optimization here: in perfect loop nest the loop headers should go ahead all the loops (as explained in the mail). So lets make this PR to track it.