Regressions on trunk at revision 206007 vs revision 205998

[H.J. Lu Intel64 Core i7]

New failures:
FAIL: c-c++-common/tsan/simple_race.c  -O0  execution test
FAIL: c-c++-common/tsan/simple_race.c  -O2  execution test

New passes:
FAIL: gcc.dg/vect/vect-nop-move.c execution test
FAIL: gcc.target/i386/pr57756.c  (test for errors, line 14)
FAIL: gcc.target/i386/pr57756.c  (test for errors, line 14)
FAIL: gcc.target/i386/pr57756.c  (test for errors, line 6)
FAIL: gcc.target/i386/pr57756.c  (test for errors, line 6)