Regressions on trunk at revision 193159 vs revision 193151

[H.J. Lu x32]

New failures:

New passes:
FAIL: gcc.dg/autopar/pr49960.c scan-tree-dump-times optimized "loopfn" 0
FAIL: gcc.dg/autopar/pr49960.c scan-tree-dump-times parloops "SUCCESS: may be parallelized" 0