Regressions on trunk at revision 204404 vs revision 204389

[H.J. Lu Intel64]

New failures:

New passes:
FAIL: experimental/optional/cons/copy.cc (test for excess errors)
FAIL: experimental/optional/cons/move.cc execution test
FAIL: experimental/optional/cons/value.cc (test for excess errors)
FAIL: experimental/optional/cons/value.cc execution test
FAIL: experimental/optional/constexpr/cons/value.cc (test for excess errors)
FAIL: g++.dg/pch/pch.C  -O2 -I. -Dwith_PCH (test for excess errors)
FAIL: g++.dg/pch/pch.C  -O2 -g -I. -Dwith_PCH (test for excess errors)
FAIL: g++.dg/pch/pch.C  -g -I. -Dwith_PCH (test for excess errors)
FAIL: g++.dg/pch/pch.C -O2 -g assembly comparison
FAIL: g++.dg/pch/pch.C -O2 assembly comparison
FAIL: g++.dg/pch/pch.C -g assembly comparison
FAIL: gcc.dg/iec-559-macros-9.c (test for excess errors)
FAIL: gcc.dg/pch/save-temps-1.c   -O0  -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/save-temps-1.c   -O1  -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/save-temps-1.c   -O2  -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/save-temps-1.c   -O3 -fomit-frame-pointer  -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/save-temps-1.c   -O3 -g  -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/save-temps-1.c   -Os  -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/save-temps-1.c  -O0  assembly comparison
FAIL: gcc.dg/pch/save-temps-1.c  -O0 -g -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/save-temps-1.c  -O1  assembly comparison
FAIL: gcc.dg/pch/save-temps-1.c  -O2  assembly comparison
FAIL: gcc.dg/pch/save-temps-1.c  -O3 -fomit-frame-pointer  assembly comparison
FAIL: gcc.dg/pch/save-temps-1.c  -O3 -g  assembly comparison
FAIL: gcc.dg/pch/save-temps-1.c  -Os  assembly comparison
FAIL: gcc.dg/pch/save-temps-1.c -O0 -g assembly comparison