Regressions on trunk at revision 244346 vs revision 244313

[H.J. Lu ia32 Core i7]

New failures:
FAIL: c-c++-common/Waddress-2.c  -std=gnu++11 (test for excess errors)
FAIL: c-c++-common/Waddress-2.c  -std=gnu++14 (test for excess errors)
FAIL: c-c++-common/Waddress-2.c  -std=gnu++98 (test for excess errors)

New passes:
ERROR: gcc.dg/tree-ssa/flatten-3.c: syntax error in target selector "-fno-ipa-icf" for " dg-options 2 -O2 -fno-ipa-icf "