Regressions on trunk at revision 241511 vs revision 241506

[H.J. Lu Intel64 LTO/FDO]

New failures:

New passes:
FAIL: g++.dg/cpp1z/launder1.C  -std=c++11 (test for excess errors)
FAIL: g++.dg/cpp1z/launder1.C  -std=c++11 (test for excess errors)
FAIL: g++.dg/cpp1z/launder1.C  -std=c++14 (test for excess errors)
FAIL: g++.dg/cpp1z/launder1.C  -std=c++14 (test for excess errors)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++11  (test for errors, line 11)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++11  (test for errors, line 11)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++11  (test for errors, line 27)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++11  (test for errors, line 27)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++11  (test for errors, line 28)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++11  (test for errors, line 28)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++11 (test for excess errors)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++11 (test for excess errors)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++14  (test for errors, line 11)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++14  (test for errors, line 11)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++14  (test for errors, line 27)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++14  (test for errors, line 27)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++14  (test for errors, line 28)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++14  (test for errors, line 28)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++14 (test for excess errors)
FAIL: g++.dg/cpp1z/launder2.C  -std=c++14 (test for excess errors)