Regressions on trunk at revision 249778 vs revision 249769

[Intel Automatic Testing System [ia32 Core AVX2]]

New failures:

New passes:
FAIL: gcc.dg/uninit-pred-7_d.c (test for excess errors)
FAIL: gcc.dg/uninit-pred-7_d.c warning (test for warnings, line 48)
FAIL: gcc.dg/uninit-pred-8_d.c (test for excess errors)
FAIL: gcc.dg/uninit-pred-8_d.c warning (test for warnings, line 42)
FAIL: gcc.target/i386/branch-cost1.c (test for excess errors)
FAIL: gcc.target/i386/branch-cost4.c (test for excess errors)