Regressions on trunk at revision 238058 vs revision 238039

[Intel Automatic Testing System [Intel64 Core AVXi]]

New failures:
FAIL: gcc.dg/atomic/c11-atomic-exec-5.c   -O2  execution test
FAIL: gcc.dg/atomic/c11-atomic-exec-5.c   -Os  execution test
WARNING: program timed out.

New passes:
FAIL: gcc.dg/atomic/c11-atomic-exec-5.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gcc.dg/tree-ssa/scev-14.c scan-tree-dump-not ivopts "Overflowness wrto loop niter:\tOverflow"
FAIL: gcc.dg/tree-ssa/scev-14.c scan-tree-dump-not ivopts "Overflowness wrto loop niter:\tOverflow"