Regressions on trunk at revision 199990 vs revision 199986

[H.J. Lu x32]

New failures:
FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation,  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (internal compiler error)
FAIL: gcc.c-torture/execute/builtins/vsnprintf-chk.c compilation,  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (internal compiler error)
FAIL: gcc.c-torture/execute/builtins/vsprintf-chk.c compilation,  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (internal compiler error)
FAIL: gcc.c-torture/execute/builtins/vsprintf-chk.c compilation,  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (internal compiler error)
FAIL: gcc.dg/lto/20081201-2 c_lto_20081201-2_0.o-c_lto_20081201-2_1.o link, -O3 -flto -flto-partition=1to1 (internal compiler error)
FAIL: gcc.dg/torture/pr47426-1.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (internal compiler error)
FAIL: gcc.dg/torture/pr47426-1.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: gcc.dg/torture/pr47426-1.c  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (internal compiler error)
FAIL: gcc.dg/torture/pr47426-1.c  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)

New passes: