Regressions on trunk at revision 223886 vs revision 223866

[H.J. Lu ia32 Core i7]

New failures:
FAIL: g++.dg/ipa/ipa-icf-4.C  -std=gnu++11  scan-ipa-dump icf "Equal symbols: [67]"
FAIL: g++.dg/ipa/ipa-icf-4.C  -std=gnu++14  scan-ipa-dump icf "Equal symbols: [67]"
FAIL: g++.dg/ipa/ipa-icf-4.C  -std=gnu++98  scan-ipa-dump icf "Equal symbols: [67]"
ERROR: gcc.dg/alias-8.c: syntax error in target selector "" for " dg-warning 11 "type-punned pointer" "" { } "

New passes: