Regressions on trunk at revision 257496 vs revision 257477

[H.J. Lu Intel64 -fpic -mcmodel=medium -mcmodel=large]

New failures:

New passes:
FAIL: g++.dg/torture/pr67600.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)
FAIL: g++.dg/torture/pr67600.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)
FAIL: g++.dg/torture/pr67600.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)
FAIL: g++.dg/vect/slp-pr56812.cc  -std=c++11  scan-tree-dump-times slp1 "basic block vectorized" 1 (found 0 times)
FAIL: g++.dg/vect/slp-pr56812.cc  -std=c++11  scan-tree-dump-times slp1 "basic block vectorized" 1 (found 0 times)
FAIL: g++.dg/vect/slp-pr56812.cc  -std=c++11  scan-tree-dump-times slp1 "basic block vectorized" 1 (found 0 times)
FAIL: g++.dg/vect/slp-pr56812.cc  -std=c++14  scan-tree-dump-times slp1 "basic block vectorized" 1 (found 0 times)
FAIL: g++.dg/vect/slp-pr56812.cc  -std=c++14  scan-tree-dump-times slp1 "basic block vectorized" 1 (found 0 times)
FAIL: g++.dg/vect/slp-pr56812.cc  -std=c++14  scan-tree-dump-times slp1 "basic block vectorized" 1 (found 0 times)
FAIL: g++.dg/vect/slp-pr56812.cc  -std=c++98  scan-tree-dump-times slp1 "basic block vectorized" 1 (found 0 times)
FAIL: g++.dg/vect/slp-pr56812.cc  -std=c++98  scan-tree-dump-times slp1 "basic block vectorized" 1 (found 0 times)
FAIL: g++.dg/vect/slp-pr56812.cc  -std=c++98  scan-tree-dump-times slp1 "basic block vectorized" 1 (found 0 times)
FAIL: gcc.target/i386/mvc9.c (test for excess errors)
FAIL: gcc.target/i386/mvc9.c (test for excess errors)
FAIL: gcc.target/i386/mvc9.c (test for excess errors)