| ; RUN: llc < %s | 
 | ; PR5495 | 
 |  | 
 | %"struct.std::__ctype_abstract_base<wchar_t>" = type { %"struct.std::locale::facet" } | 
 | %"struct.std::basic_ios<char,std::char_traits<char> >" = type { %"struct.std::ios_base", %"struct.std::basic_ostream<char,std::char_traits<char> >"*, i8, i8, %"struct.std::basic_streambuf<char,std::char_traits<char> >"*, %"struct.std::ctype<char>"*, %"struct.std::__ctype_abstract_base<wchar_t>"*, %"struct.std::__ctype_abstract_base<wchar_t>"* } | 
 | %"struct.std::basic_istream<char,std::char_traits<char> >" = type { i32 (...)**, i32, %"struct.std::basic_ios<char,std::char_traits<char> >" } | 
 | %"struct.std::basic_ostream<char,std::char_traits<char> >" = type { i32 (...)**, %"struct.std::basic_ios<char,std::char_traits<char> >" } | 
 | %"struct.std::basic_streambuf<char,std::char_traits<char> >" = type { i32 (...)**, i8*, i8*, i8*, i8*, i8*, i8*, %"struct.std::locale" } | 
 | %"struct.std::ctype<char>" = type { %"struct.std::locale::facet", i32*, i8, i32*, i32*, i16*, i8, [256 x i8], [256 x i8], i8 } | 
 | %"struct.std::ios_base" = type { i32 (...)**, i32, i32, i32, i32, i32, %"struct.std::ios_base::_Callback_list"*, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, %"struct.std::ios_base::_Words"*, %"struct.std::locale" } | 
 | %"struct.std::ios_base::_Callback_list" = type { %"struct.std::ios_base::_Callback_list"*, void (i32, %"struct.std::ios_base"*, i32)*, i32, i32 } | 
 | %"struct.std::ios_base::_Words" = type { i8*, i32 } | 
 | %"struct.std::locale" = type { %"struct.std::locale::_Impl"* } | 
 | %"struct.std::locale::_Impl" = type { i32, %"struct.std::locale::facet"**, i32, %"struct.std::locale::facet"**, i8** } | 
 | %"struct.std::locale::facet" = type { i32 (...)**, i32 } | 
 | %union..0._15 = type { i32 } | 
 |  | 
 | declare i8* @__cxa_begin_catch(i8*) nounwind | 
 |  | 
 | declare %"struct.std::ctype<char>"* @_ZSt9use_facetISt5ctypeIcEERKT_RKSt6locale(%"struct.std::locale"*) | 
 |  | 
 | define %"struct.std::basic_istream<char,std::char_traits<char> >"* @_ZStrsIcSt11char_traitsIcEERSt13basic_istreamIT_T0_ES6_PS3_(%"struct.std::basic_istream<char,std::char_traits<char> >"* %__in, i8* nocapture %__s) personality i32 (...)* @__gxx_personality_v0 { | 
 | entry: | 
 |   %0 = invoke %"struct.std::ctype<char>"* @_ZSt9use_facetISt5ctypeIcEERKT_RKSt6locale(%"struct.std::locale"* undef) | 
 |           to label %invcont8 unwind label %lpad74 ; <%"struct.std::ctype<char>"*> [#uses=0] | 
 |  | 
 | invcont8:                                         ; preds = %entry | 
 |   %1 = invoke i32 undef(%"struct.std::basic_streambuf<char,std::char_traits<char> >"* undef) | 
 |           to label %bb26.preheader unwind label %lpad ; <i32> [#uses=0] | 
 |  | 
 | bb26.preheader:                                   ; preds = %invcont8 | 
 |   br label %invcont38 | 
 |  | 
 | bb1.i100:                                         ; preds = %invcont38 | 
 |   %2 = add nsw i32 1, %__extracted.0  ; <i32> [#uses=3] | 
 |   br i1 undef, label %bb.i97, label %bb1.i | 
 |  | 
 | bb.i97:                                           ; preds = %bb1.i100 | 
 |   br label %invcont38 | 
 |  | 
 | bb1.i:                                            ; preds = %bb1.i100 | 
 |   %3 = invoke i32 undef(%"struct.std::basic_streambuf<char,std::char_traits<char> >"* undef) | 
 |           to label %invcont38 unwind label %lpad ; <i32> [#uses=0] | 
 |  | 
 | invcont24:                                        ; preds = %invcont38 | 
 |   %4 = invoke i32 undef(%"struct.std::basic_streambuf<char,std::char_traits<char> >"* undef) | 
 |           to label %_ZNSt15basic_streambufIcSt11char_traitsIcEE6sbumpcEv.exit.i unwind label %lpad ; <i32> [#uses=0] | 
 |  | 
 | _ZNSt15basic_streambufIcSt11char_traitsIcEE6sbumpcEv.exit.i: ; preds = %invcont24 | 
 |   br i1 undef, label %invcont25, label %bb.i93 | 
 |  | 
 | bb.i93:                                           ; preds = %_ZNSt15basic_streambufIcSt11char_traitsIcEE6sbumpcEv.exit.i | 
 |   %5 = invoke i32 undef(%"struct.std::basic_streambuf<char,std::char_traits<char> >"* undef) | 
 |           to label %invcont25 unwind label %lpad ; <i32> [#uses=0] | 
 |  | 
 | invcont25:                                        ; preds = %bb.i93, %_ZNSt15basic_streambufIcSt11char_traitsIcEE6sbumpcEv.exit.i | 
 |   br label %invcont38 | 
 |  | 
 | invcont38:                                        ; preds = %invcont25, %bb1.i, %bb.i97, %bb26.preheader | 
 |   %__extracted.0 = phi i32 [ 0, %bb26.preheader ], [ undef, %invcont25 ], [ %2, %bb.i97 ], [ %2, %bb1.i ] ; <i32> [#uses=1] | 
 |   br i1 false, label %bb1.i100, label %invcont24 | 
 |  | 
 | lpad:                                             ; preds = %bb.i93, %invcont24, %bb1.i, %invcont8 | 
 |   %__extracted.1 = phi i32 [ 0, %invcont8 ], [ %2, %bb1.i ], [ undef, %bb.i93 ], [ undef, %invcont24 ] ; <i32> [#uses=0] | 
 |   %lpad1 = landingpad { i8*, i32 } | 
 |             catch i8* null | 
 |   %eh_ptr = extractvalue { i8*, i32 } %lpad1, 0 | 
 |   %6 = call i8* @__cxa_begin_catch(i8* %eh_ptr) nounwind ; <i8*> [#uses=0] | 
 |   unreachable | 
 |  | 
 | lpad74:                                           ; preds = %entry | 
 |   %lpad2 = landingpad { i8*, i32 } | 
 |             cleanup | 
 |   unreachable | 
 | } | 
 |  | 
 | declare i32 @__gxx_personality_v0(...) |