Regressions on trunk at revision 238223 vs revision 238203

[Intel Automatic Testing System [Intel64 Core AVX2 PIC]]

New failures:

New passes:
FAIL: gcc.dg/atomic/c11-atomic-exec-5.c   -O2  execution test
FAIL: gcc.dg/atomic/c11-atomic-exec-5.c   -O3 -g  execution test
WARNING: program timed out.
WARNING: program timed out.