Regressions on trunk at revision 268760 vs revision 268741

[H.J. Lu (Intel64 Core i7)]

New failures:

New passes:
FAIL: gcc.dg/vect/pr79887.c -flto -ffat-lto-objects (internal compiler error)
FAIL: gcc.dg/vect/pr79887.c -flto -ffat-lto-objects (internal compiler error)
FAIL: gcc.dg/vect/pr79887.c -flto -ffat-lto-objects (test for excess errors)
FAIL: gcc.dg/vect/pr79887.c -flto -ffat-lto-objects (test for excess errors)
FAIL: gcc.dg/vect/pr79887.c (internal compiler error)
FAIL: gcc.dg/vect/pr79887.c (internal compiler error)
FAIL: gcc.dg/vect/pr79887.c (test for excess errors)
FAIL: gcc.dg/vect/pr79887.c (test for excess errors)
FAIL: g++.dg/lto/pr65316 cp_lto_pr65316_0.o assemble,  -flto -std=c++11 -g2 -fno-lto-odr-type-merging -O2 -Wno-return-type  (internal compiler error)
FAIL: g++.dg/lto/pr65316 cp_lto_pr65316_0.o assemble,  -flto -std=c++11 -g2 -fno-lto-odr-type-merging -O2 -Wno-return-type  (internal compiler error)