Regressions on trunk at revision 251347 vs revision 251328

[H.J. Lu ia32]

New failures:
FAIL: gcc.dg/lto/chkp-ctor-merge c_lto_chkp-ctor-merge_0.o-c_lto_chkp-ctor-merge_0.o link,  -O2 -flto -fcheck-pointer-bounds -mmpx -nodefaultlibs -lc  (internal compiler error)

New passes:
FAIL: gfortran.dg/alloc_comp_auto_array_2.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
FAIL: gfortran.dg/alloc_comp_auto_array_2.f90   -O3 -g  (test for excess errors)