Regressions on trunk at revision 194660 vs revision 194652

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

New failures:
FAIL: gcc.dg/torture/pr52996.c  -O2  (internal compiler error)
FAIL: gcc.dg/torture/pr52996.c  -O2  (test for excess errors)
FAIL: gcc.dg/torture/pr52996.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (internal compiler error)
FAIL: gcc.dg/torture/pr52996.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: gcc.dg/torture/pr52996.c  -O3 -fomit-frame-pointer  (internal compiler error)
FAIL: gcc.dg/torture/pr52996.c  -O3 -fomit-frame-pointer  (test for excess errors)
FAIL: gcc.dg/torture/pr52996.c  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  (internal compiler error)
FAIL: gcc.dg/torture/pr52996.c  -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions  (test for excess errors)
FAIL: gcc.dg/torture/pr52996.c  -O3 -fomit-frame-pointer -funroll-loops  (internal compiler error)
FAIL: gcc.dg/torture/pr52996.c  -O3 -fomit-frame-pointer -funroll-loops  (test for excess errors)
FAIL: gcc.dg/torture/pr52996.c  -O3 -g  (internal compiler error)
FAIL: gcc.dg/torture/pr52996.c  -O3 -g  (test for excess errors)

New passes: