Regressions on lto at revision 147757 vs revision 147727

[H.J. Lu ia32]

New failures:
FAIL: 20_util/make_signed/requirements/typedefs-2.cc (test for excess errors)
FAIL: 20_util/make_unsigned/requirements/typedefs-2.cc (test for excess errors)
FAIL: 21_strings/basic_string/numeric_conversions/char/stod.cc execution test
FAIL: 21_strings/basic_string/numeric_conversions/char/stof.cc execution test
FAIL: 21_strings/basic_string/numeric_conversions/char/stold.cc execution test
FAIL: 22_locale/locale/cons/12352.cc execution test
FAIL: 22_locale/money_put/put/char/4.cc (test for excess errors)
FAIL: 22_locale/money_put/put/wchar_t/4.cc (test for excess errors)
FAIL: 22_locale/num_put/put/char/4.cc (test for excess errors)
FAIL: 22_locale/num_put/put/char/wrapped_env.cc (test for excess errors)
FAIL: 22_locale/num_put/put/char/wrapped_locale.cc (test for excess errors)
FAIL: 22_locale/num_put/put/wchar_t/4.cc (test for excess errors)
FAIL: 22_locale/num_put/put/wchar_t/wrapped_env.cc (test for excess errors)
FAIL: 22_locale/num_put/put/wchar_t/wrapped_locale.cc (test for excess errors)
FAIL: 23_containers/deque/capacity/29134-2.cc execution test
FAIL: 23_containers/vector/bool/modifiers/insert/31370.cc execution test
FAIL: 23_containers/vector/cons/4.cc execution test
FAIL: 23_containers/vector/ext_pointer/modifiers/insert.cc execution test
FAIL: 27_io/basic_filebuf/overflow/char/13858.cc execution test
FAIL: 27_io/basic_filebuf/overflow/wchar_t/13858.cc execution test
FAIL: 27_io/basic_filebuf/sync/char/9182-1.cc execution test
FAIL: 27_io/basic_ios/exceptions/char/2.cc execution test
FAIL: 27_io/basic_istream/exceptions/char/9561.cc execution test
FAIL: ext/enc_filebuf/char/13189.cc execution test
FAIL: ext/enc_filebuf/wchar_t/13189.cc execution test
FAIL: ext/pb_ds/regression/hash_data_map_rand.cc execution test
FAIL: ext/pb_ds/regression/hash_no_data_map_rand.cc execution test
FAIL: ext/pb_ds/regression/priority_queue_rand.cc execution test
FAIL: ext/pb_ds/regression/tree_data_map_rand.cc execution test
FAIL: ext/pb_ds/regression/tree_no_data_map_rand.cc execution test
FAIL: ext/pb_ds/regression/trie_data_map_rand.cc execution test
FAIL: ext/pb_ds/regression/trie_no_data_map_rand.cc execution test
FAIL: ext/throw_allocator/check_deallocate_null.cc execution test
ERROR: (DejaGnu) proc "libgomp_target_compile lto30473.c lto30473.exe executable {{additional_flags=-O0 -flto}}" does not exist.

New passes:
ERROR: (DejaGnu) proc "libgomp_target_compile lto7001.c lto7001.exe executable {{additional_flags=-O0 -flto}}" does not exist.