Regressions on trunk at revision 175330 vs revision 175322

[H.J. Lu ia32 Core 2/i7]

New failures:

New passes:
FAIL: gcc.dg/torture/tls/run-gd.c  -O2 -flto  (test for excess errors)
FAIL: gcc.dg/torture/tls/run-gd.c  -O2 -flto -flto-partition=none  (test for excess errors)
FAIL: gcc.dg/torture/tls/run-ie.c  -O2 -flto  (test for excess errors)
FAIL: gcc.dg/torture/tls/run-ie.c  -O2 -flto -flto-partition=none  (test for excess errors)
FAIL: gcc.dg/torture/tls/run-ld.c  -O2 -flto  (test for excess errors)
FAIL: gcc.dg/torture/tls/run-ld.c  -O2 -flto -flto-partition=none  (test for excess errors)
FAIL: gcc.dg/torture/tls/run-le.c  -O2 -flto  (test for excess errors)
FAIL: gcc.dg/torture/tls/run-le.c  -O2 -flto -flto-partition=none  (test for excess errors)
FAIL: gcc.dg/torture/tls/tls-test.c  -O2 -flto  (test for excess errors)
FAIL: gcc.dg/torture/tls/tls-test.c  -O2 -flto -flto-partition=none  (test for excess errors)
FAIL: objc.dg/torture/tls/thr-init-2.m  -O2 -flto  -fgnu-runtime (test for excess errors)
FAIL: objc.dg/torture/tls/thr-init-2.m  -O2 -flto -flto-partition=none  -fgnu-runtime (test for excess errors)