Regressions on trunk at revision 211652 vs revision 211315

[i64coreavxi@ecsmtp.ims.intel.com]

New failures:
FAIL: gcc.dg/torture/vshuf-v8sf.c  -O2  (internal compiler error)
FAIL: gcc.dg/torture/vshuf-v8sf.c  -O2  (internal compiler error)
FAIL: gcc.dg/torture/vshuf-v8sf.c  -O2  (test for excess errors)
FAIL: gcc.dg/torture/vshuf-v8sf.c  -O2  (test for excess errors)
FAIL: g++.dg/abi/layout4.C -std=gnu++11 (test for excess errors)
FAIL: g++.dg/abi/layout4.C -std=gnu++1y (test for excess errors)
FAIL: g++.dg/abi/layout4.C -std=gnu++98 (test for excess errors)

New passes: