Regressions on lto at revision 149614 vs revision 149542

[H.J. Lu Intel64]

New failures:
ERROR: (DejaGnu) proc "libgomp_target_compile lto2537.c lto2537.exe executable {{additional_flags=-O0 -flto}}" does not exist.

New passes:
FAIL: 18_support/nested_exception/rethrow_if_nested.cc execution test
FAIL: 23_containers/deque/capacity/29134-2.cc execution test
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/cons/4.cc execution test
FAIL: 23_containers/vector/ext_pointer/modifiers/insert.cc execution test
FAIL: 23_containers/vector/ext_pointer/modifiers/insert.cc execution test
FAIL: ext/enc_filebuf/char/13189.cc execution test
FAIL: ext/enc_filebuf/char/13189.cc execution test
FAIL: ext/enc_filebuf/wchar_t/13189.cc execution test
FAIL: ext/enc_filebuf/wchar_t/13189.cc execution test
FAIL: ext/pb_ds/regression/trie_data_map_rand.cc execution test
FAIL: g++.dg/torture/stackalign/eh-vararg-2.C  -O2 -flto  execution test
FAIL: g++.dg/torture/stackalign/eh-vararg-2.C  -O2 -flto  execution test
FAIL: g++.dg/torture/stackalign/eh-vararg-2.C  -O2 -fwhopr  execution test
FAIL: g++.dg/torture/stackalign/eh-vararg-2.C  -O2 -fwhopr  execution test
FAIL: g++.dg/torture/stackalign/eh-vararg-2.C  -O3 -flto  execution test
FAIL: g++.dg/torture/stackalign/eh-vararg-2.C  -O3 -flto  execution test
FAIL: g++.dg/torture/stackalign/eh-vararg-2.C  -O3 -fwhopr  execution test
FAIL: g++.dg/torture/stackalign/eh-vararg-2.C  -O3 -fwhopr  execution test
FAIL: g++.dg/torture/stackalign/unwind-3.C  -O2 -flto  execution test
FAIL: g++.dg/torture/stackalign/unwind-3.C  -O2 -fwhopr  execution test
FAIL: g++.dg/torture/stackalign/unwind-5.C  -O2 -flto  execution test
FAIL: g++.dg/torture/stackalign/unwind-5.C  -O2 -fwhopr  execution test
FAIL: g++.dg/torture/stackalign/unwind-5.C  -O3 -flto  execution test
FAIL: g++.dg/torture/stackalign/unwind-5.C  -O3 -fwhopr  execution test
FAIL: g++.dg/torture/stackalign/unwind-6.C  -O2 -flto  execution test
FAIL: g++.dg/torture/stackalign/unwind-6.C  -O2 -fwhopr  execution test
FAIL: g++.dg/torture/stackalign/unwind-6.C  -O3 -flto  execution test
FAIL: g++.dg/torture/stackalign/unwind-6.C  -O3 -fwhopr  execution test
FAIL: gcc.c-torture/execute/20041214-1.c compilation,  -O2 -flto  (internal compiler error)
FAIL: gcc.c-torture/execute/20041214-1.c compilation,  -O2 -fwhopr  (internal compiler error)
FAIL: gcc.c-torture/execute/20041214-1.c compilation,  -O3 -flto  (internal compiler error)
FAIL: gcc.c-torture/execute/20041214-1.c compilation,  -O3 -fwhopr  (internal compiler error)
FAIL: gcc.dg/torture/ssa-pta-fn-1.c  -O3 -flto  execution test
FAIL: gcc.dg/torture/ssa-pta-fn-1.c  -O3 -flto  execution test
FAIL: gcc.dg/torture/ssa-pta-fn-1.c  -O3 -fwhopr  execution test
FAIL: gcc.dg/torture/ssa-pta-fn-1.c  -O3 -fwhopr  execution test
ERROR: (DejaGnu) proc "libgomp_target_compile lto10735.c lto10735.exe executable {{additional_flags=-O0 -flto}}" does not exist.