Regressions on trunk at revision 201123 vs revision 201116

[H.J. Lu Intel64]

New failures:
FAIL: c-c++-common/cilk-plus/AN/pr57577.c  -O3 -ftree-vectorize -std=c99 -g -fcilkplus  (test for errors, line 10)
FAIL: c-c++-common/cilk-plus/AN/pr57577.c  -O3 -ftree-vectorize -std=c99 -g -fcilkplus  (test for errors, line 9)
FAIL: c-c++-common/cilk-plus/AN/pr57577.c  -O3 -ftree-vectorize -std=c99 -g -fcilkplus (test for excess errors)
FAIL: gcc.dg/pr53265.c  (test for warnings, line 88)
FAIL: gcc.dg/pr53265.c  (test for warnings, line 88)

New passes:
FAIL: g++.dg/torture/stackalign/throw-1.C  -O0 -fpic (test for excess errors)