Regressions on trunk at revision 205108 vs revision 205096

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

New failures:
FAIL: gcc.c-torture/execute/20000818-1.c compilation,  -O2 -flto -fno-use-linker-plugin -flto-partition=none 
FAIL: gcc.c-torture/execute/zero-struct-2.c compilation,  -O2 -flto -fno-use-linker-plugin -flto-partition=none 
FAIL: gcc.dg/guality/pr54519-1.c  -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  line 20 z == 6
FAIL: g++.dg/lto/20100603-1 cp_lto_20100603-1_0.o-cp_lto_20100603-1_1.o link, -O0 -flto -flto-partition=1to1 -fno-use-linker-plugin 

New passes:
FAIL: gcc.c-torture/execute/20000503-1.c compilation,  -O2 -flto -fno-use-linker-plugin -flto-partition=none 
FAIL: gcc.c-torture/execute/20000815-1.c compilation,  -O2 -flto -fno-use-linker-plugin -flto-partition=none 
FAIL: gcc.c-torture/execute/pr22061-1.c compilation,  -O2 -flto -fno-use-linker-plugin -flto-partition=none 
FAIL: gcc.dg/atomic/stdatomic-load-4.c  -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)