Regressions on trunk at revision 215908 vs revision 215902

[H.J. Lu x32]

New failures:

New passes:
FAIL: g++.dg/ipa/pr61540.C  -std=gnu++11 (internal compiler error)
FAIL: g++.dg/ipa/pr61540.C  -std=gnu++11 (test for excess errors)
FAIL: g++.dg/ipa/pr61540.C  -std=gnu++1y (internal compiler error)
FAIL: g++.dg/ipa/pr61540.C  -std=gnu++1y (test for excess errors)