Regressions on trunk at revision 245832 vs revision 245817

[Intel Automatic Testing System [Intel64 Core AVX2]]

New failures:

New passes:
FAIL: gcc.dg/rtl/x86_64/dfinit.c execution test
FAIL: gcc.dg/rtl/x86_64/final.c (internal compiler error)
FAIL: gcc.dg/rtl/x86_64/final.c (test for excess errors)
FAIL: gcc.dg/rtl/x86_64/into-cfglayout.c execution test
FAIL: gcc.dg/rtl/x86_64/ira.c execution test
FAIL: gcc.dg/rtl/x86_64/times-two.c.after-expand.c execution test
FAIL: gcc.dg/rtl/x86_64/vregs.c execution test