Regressions on trunk at revision 218048 vs revision 218042

[H.J. Lu Intel64 Core i7]

New failures:

New passes:
FAIL: g++.dg/ipa/devirt-42.C  -std=gnu++11  scan-ipa-dump-times inline "First type is base of second" 3
FAIL: g++.dg/ipa/devirt-42.C  -std=gnu++11  scan-ipa-dump-times inline "First type is base of second" 3
FAIL: g++.dg/ipa/devirt-42.C  -std=gnu++14  scan-ipa-dump-times inline "First type is base of second" 3
FAIL: g++.dg/ipa/devirt-42.C  -std=gnu++14  scan-ipa-dump-times inline "First type is base of second" 3