Regressions on trunk at revision 263243 vs revision 263191

[H.J. Lu (Intel64 LTO/FDO)]

New failures:

New passes:
FAIL: c-c++-common/spec-barrier-1.c  -std=gnu++11 (test for excess errors)
FAIL: c-c++-common/spec-barrier-1.c  -std=gnu++11 (test for excess errors)
FAIL: c-c++-common/spec-barrier-1.c  -std=gnu++14 (test for excess errors)
FAIL: c-c++-common/spec-barrier-1.c  -std=gnu++14 (test for excess errors)
FAIL: c-c++-common/spec-barrier-1.c  -std=gnu++98 (test for excess errors)
FAIL: c-c++-common/spec-barrier-1.c  -std=gnu++98 (test for excess errors)
FAIL: c-c++-common/spec-barrier-1.c  -Wc++-compat  (test for excess errors)
FAIL: c-c++-common/spec-barrier-1.c  -Wc++-compat  (test for excess errors)
FAIL: gcc.dg/pr84452.c (internal compiler error)
FAIL: gcc.dg/pr84452.c (internal compiler error)
FAIL: gcc.dg/pr84452.c (test for excess errors)
FAIL: gcc.dg/pr84452.c (test for excess errors)
FAIL: gcc.target/i386/pr84309.c (internal compiler error)
FAIL: gcc.target/i386/pr84309.c (internal compiler error)
FAIL: gcc.target/i386/pr84309.c (test for excess errors)
FAIL: gcc.target/i386/pr84309.c (test for excess errors)