Regressions on lto at revision 149619 vs revision 149615

[H.J. Lu ia32]

New failures:
FAIL: g++.dg/torture/pr40460.C  -O2 -fwhopr  (test for excess errors)
FAIL: gcc.c-torture/execute/20000910-2.c compilation,  -O3 -fwhopr  (internal compiler error)
FAIL: gcc.c-torture/execute/20010122-1.c compilation,  -O0 -flto  (internal compiler error)
FAIL: gcc.c-torture/execute/20020402-1.c compilation,  -O0 -fwhopr  (internal compiler error)
FAIL: gcc.c-torture/execute/20020418-1.c compilation,  -O3 -fwhopr  (internal compiler error)
FAIL: gcc.target/i386/math-torture/lfloor.c  -O0 -flto  (internal compiler error)
ERROR: (DejaGnu) proc "libgomp_target_compile lto15704.c lto15704.exe executable {{additional_flags=-O0 -flto}}" does not exist.

New passes:
FAIL: gcc.c-torture/compile/930411-1.c  -O2 -fwhopr  (internal compiler error)
FAIL: gcc.c-torture/execute/920501-4.c compilation,  -O0 -flto  (internal compiler error)
ERROR: (DejaGnu) proc "libgomp_target_compile lto24338.c lto24338.exe executable {{additional_flags=-O0 -flto}}" does not exist.