Regressions on trunk at revision 248399 vs revision 248365

[H.J. Lu ia32 Core i7]

New failures:
FAIL: g++.dg/ext/integer-pack2.C  -std=gnu++11 (test for excess errors)
FAIL: g++.dg/ext/integer-pack2.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/ext/mv16.C  -std=gnu++11 execution test
FAIL: g++.dg/ext/mv16.C  -std=gnu++14 execution test
FAIL: g++.dg/ext/mv16.C  -std=gnu++98 execution test
FAIL: gfortran.dg/pr48636.f90   -O   scan-ipa-dump fnsummary "inline hints: loop_iterations"

New passes:
FAIL: gfortran.dg/pr48636.f90   -O   scan-ipa-dump inline "inline hints: loop_iterations"