Regressions on trunk at revision 191862 vs revision 191859

[H.J. Lu Intel64]

New failures:
FAIL: gcc.dg/torture/pr51106-2.c  -O0   (test for warnings, line 8)
FAIL: gcc.dg/torture/pr51106-2.c  -O0   (test for warnings, line 8)
FAIL: gcc.dg/torture/pr51106-2.c  -O1   (test for warnings, line 8)
FAIL: gcc.dg/torture/pr51106-2.c  -O1   (test for warnings, line 8)
FAIL: gcc.dg/torture/pr51106-2.c  -O2   (test for warnings, line 8)
FAIL: gcc.dg/torture/pr51106-2.c  -O2   (test for warnings, line 8)
FAIL: gcc.dg/torture/pr51106-2.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none   (test for warnings, line 8)
FAIL: gcc.dg/torture/pr51106-2.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none   (test for warnings, line 8)
FAIL: gcc.dg/torture/pr51106-2.c  -O3 -fomit-frame-pointer   (test for warnings, line 8)
FAIL: gcc.dg/torture/pr51106-2.c  -O3 -fomit-frame-pointer   (test for warnings, line 8)
FAIL: gcc.dg/torture/pr51106-2.c  -O3 -g   (test for warnings, line 8)
FAIL: gcc.dg/torture/pr51106-2.c  -O3 -g   (test for warnings, line 8)
FAIL: gcc.dg/torture/pr51106-2.c  -Os   (test for warnings, line 8)
FAIL: gcc.dg/torture/pr51106-2.c  -Os   (test for warnings, line 8)
FAIL: gcc.dg/ucnid-8.c (test for excess errors)
FAIL: gcc.dg/ucnid-8.c (test for excess errors)
FAIL: gcc.dg/ucnid-8.c UCN diag (test for warnings, line 14)
FAIL: gcc.dg/ucnid-8.c UCN diag (test for warnings, line 14)

New passes: