Regressions on trunk at revision 172929 vs revision 172915

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

New failures:

New passes:
FAIL: g++.dg/lto/20081109-1 cp_lto_20081109-1_0.o-cp_lto_20081109-1_0.o link, -fPIC -flto -flto-partition=1to1
FAIL: g++.dg/lto/20081118 cp_lto_20081118_0.o-cp_lto_20081118_1.o link, -fPIC -flto -flto-partition=1to1 -r -nostdlib
FAIL: g++.dg/lto/20081125 cp_lto_20081125_0.o-cp_lto_20081125_1.o link, -flto -flto-partition=1to1
FAIL: g++.dg/lto/20081204-1 cp_lto_20081204-1_0.o-cp_lto_20081204-1_1.o link, -flto -flto-partition=1to1 -fPIC -r -nostdlib
FAIL: g++.dg/lto/20081219 cp_lto_20081219_0.o-cp_lto_20081219_1.o link, -fPIC -flto -flto-partition=1to1 -O2
FAIL: g++.dg/lto/20090302 cp_lto_20090302_0.o-cp_lto_20090302_1.o link, -fPIC -flto -flto-partition=1to1 -r -nostdlib
FAIL: g++.dg/lto/20091026-1 cp_lto_20091026-1_0.o-cp_lto_20091026-1_1.o link, -O0 -flto
FAIL: g++.dg/lto/20091026-1 cp_lto_20091026-1_0.o-cp_lto_20091026-1_1.o link, -O0 -flto -flto-partition=1to1 
FAIL: g++.dg/lto/20091026-1 cp_lto_20091026-1_0.o-cp_lto_20091026-1_1.o link, -O0 -flto -flto-partition=none 
FAIL: g++.dg/lto/20100724-1 cp_lto_20100724-1_0.o-cp_lto_20100724-1_0.o link, -ftoplevel-reorder -flto -flto-partition=1to1
FAIL: g++.dg/lto/20100724-1 cp_lto_20100724-1_0.o-cp_lto_20100724-1_0.o link, -ftoplevel-reorder -flto -flto-partition=none