Regressions on trunk at revision 176810 vs revision 176795

[H.J. Lu Intel64 LTO/FDO]

New failures:

New passes:
FAIL at line 4023: unknown demangling style _ZSt10_ConstructI10CellBorderIS0_EEvPT_DpOT0_
FAIL at line 4027: unknown demangling style yz.qrs
FAIL at line 4031: unknown demangling style oper."+"
FAIL at line 4035: unknown demangling style yz.qrs
FAIL at line 4039: unknown demangling style yz.qrs.tuv
FAIL at line 4042: unknown demangling style yz.qrs.tuv
FAIL at line 4045: unknown demangling style yz.qrs.tuv
FAIL at line 4049: unknown demangling style yz.qrs.tuv
FAIL at line 4053: unknown demangling style <x_E>
FAIL at line 4056: unknown demangling style x.m1
FAIL at line 4059: unknown demangling style x.m3
FAIL at line 4062: unknown demangling style x.y.m2
FAIL at line 4066: unknown demangling style x.y.z.r
FAIL at line 4070: unknown demangling style x.y.j
FAIL at line 4074: unknown demangling style x.m3
FAIL at line 4078: unknown demangling style p'Elab_Body
FAIL at line 4082: unknown demangling style p'Elab_Spec
FAIL at line 4086: unknown demangling style p.taskobj
FAIL at line 4090: unknown demangling style p.taskobj.f1
FAIL at line 4093: unknown demangling style prot.lock.get
FAIL at line 4096: unknown demangling style prot.lock.get
FAIL at line 4099: unknown demangling style prot.lock.get.sub
FAIL at line 4102: unknown demangling style prot.lock.set
FAIL at line 4106: unknown demangling style prot.lock.set
FAIL at line 4109: unknown demangling style prot.lock.update
FAIL at line 4113: unknown demangling style prot.lock.update
FAIL at line 4116: unknown demangling style gnat.sockets.sockets_library_controller.Finalize
FAIL at line 4120: unknown demangling style system.partition_interface.racw_stub_type.Adjust
FAIL at line 4123: unknown demangling style gnat.wide_wide_string_split.slice_set'Read
FAIL at line 4126: unknown demangling style ada.real_time.timing_events.events.list'Write
FAIL at line 4129: unknown demangling style system.finalization_root.root_controlled'Input
FAIL at line 4133: unknown demangling style ada.finalization.limited_controlled'Output
FAIL at line 4136: unknown demangling style ada.synchronous_task_control'Size
FAIL at line 4139: unknown demangling style ada.real_time.timing_events.events'Alignment
FAIL at line 4144: unknown demangling style system.finalization_root.":="
FAIL at line 4149: unknown demangling style DFA
FAIL at line 4152: unknown demangling style Psi::VariantDetail::SelectVisitorResult<VariantTest::TestVisit::test_method()::{lambda(char const*)#2}&, VariantTest::TestVisit::test_method()::{lambda(char)#3}&, VariantTest::TestVisit::test_method()::{lambda(Psi::None)#1}&>::type Psi::Variant<char, char const*>::visit<VariantTest::TestVisit::test_method()::{lambda(char const*)#2}&, VariantTest::TestVisit::test_method()::{lambda(char)#3}&, VariantTest::TestVisit::test_method()::{lambda(Psi::None)#1}&>((VariantTest::TestVisit::test_method()::{lambda(Psi::None)#1}&)...)