Regressions on trunk at revision 200171 vs revision 200168

[Kirill Yukhin [Intel32 Core AVX-i]]

New failures:
FAIL: g++.dg/ext/mv2.C -std=gnu++11 execution test
FAIL: g++.dg/ext/mv2.C -std=gnu++98 execution test

New passes:
FAIL: g++.dg/ext/mv1.C -std=gnu++11 (internal compiler error)
FAIL: g++.dg/ext/mv1.C -std=gnu++11 (test for excess errors)
FAIL: g++.dg/ext/mv1.C -std=gnu++98 (internal compiler error)
FAIL: g++.dg/ext/mv1.C -std=gnu++98 (test for excess errors)
FAIL: g++.dg/ext/mv2.C -std=gnu++11 (internal compiler error)
FAIL: g++.dg/ext/mv2.C -std=gnu++11 (test for excess errors)
FAIL: g++.dg/ext/mv2.C -std=gnu++98 (internal compiler error)
FAIL: g++.dg/ext/mv2.C -std=gnu++98 (test for excess errors)