Regressions on trunk at revision 193852 vs revision 193844

[H.J. Lu x32]

New failures:

New passes:
FAIL: gcc.dg/torture/pr51106-2.c  -O0  (internal compiler error)
FAIL: gcc.dg/torture/pr51106-2.c  -O0  (test for excess errors)
FAIL: gcc.dg/torture/pr51106-2.c  -O1  (internal compiler error)
FAIL: gcc.dg/torture/pr51106-2.c  -O1  (test for excess errors)
FAIL: gcc.dg/torture/pr51106-2.c  -O2  (internal compiler error)
FAIL: gcc.dg/torture/pr51106-2.c  -O2  (test for excess errors)
FAIL: gcc.dg/torture/pr51106-2.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (internal compiler error)
FAIL: gcc.dg/torture/pr51106-2.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: gcc.dg/torture/pr51106-2.c  -O3 -fomit-frame-pointer  (internal compiler error)
FAIL: gcc.dg/torture/pr51106-2.c  -O3 -fomit-frame-pointer  (test for excess errors)
FAIL: gcc.dg/torture/pr51106-2.c  -O3 -g  (internal compiler error)
FAIL: gcc.dg/torture/pr51106-2.c  -O3 -g  (test for excess errors)
FAIL: gcc.dg/torture/pr51106-2.c  -Os  (internal compiler error)
FAIL: gcc.dg/torture/pr51106-2.c  -Os  (test for excess errors)