Regressions on trunk at revision 224008 vs revision 223997

[H.J. Lu ia32]

New failures:
FAIL: g++.dg/abi/mangle-regparm.C  -std=c++11 (test for excess errors)
FAIL: g++.dg/abi/mangle-regparm.C  -std=c++14 (test for excess errors)
FAIL: g++.dg/abi/mangle-regparm.C  -std=c++98 (test for excess errors)

New passes:
ERROR: (DejaGnu) proc "cleanup-tree-dump vect" does not exist.