Regressions on trunk at revision 217403 vs revision 217395

[i32coreavxi@ecsmtp.ims.intel.com]

New failures:

New passes:
FAIL: g++.dg/ipa/devirt-42.C  -std=gnu++11  scan-tree-dump-times optimized "return 2" 2
FAIL: g++.dg/ipa/devirt-42.C  -std=gnu++14  scan-tree-dump-times optimized "return 2" 2
FAIL: g++.dg/ipa/devirt-42.C  -std=gnu++98  scan-tree-dump-times optimized "return 2" 2