Regressions on trunk at revision 211652 vs revision 211312

[Denis Larionov [ia32 Core AVX2]]

New failures:
FAIL: gcc.dg/vect/slp-perm-9.c -flto -ffat-lto-objects  scan-tree-dump-times vect "vectorized 1 loops" 2
FAIL: gcc.dg/vect/slp-perm-9.c scan-tree-dump-times vect "vectorized 1 loops" 2
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: