Regressions on trunk at revision 257456 vs revision 257404

[H.J. Lu Intel64 LTO/FDO]

New failures:
FAIL: gcc.target/i386/mvc9.c (test for excess errors)
FAIL: gcc.target/i386/mvc9.c (test for excess errors)
FAIL: g++.dg/torture/pr67600.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)
FAIL: g++.dg/torture/pr67600.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)
FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/pr84217.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1  -O2  (test for excess errors)
FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/pr84217.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1  -O2  (test for excess errors)

New passes: