--- /dev/null
+; RUN: llvm-as < %s | opt -ssi-everything -disable-output
+; PR4511
+
+ %"struct.std::_Vector_base<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >" = type { %"struct.std::_Vector_base<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >::_Vector_impl" }
+ %"struct.std::_Vector_base<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >::_Vector_impl" = type { %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"*, %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"*, %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* }
+ %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >" = type { %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Alloc_hider" }
+ %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Alloc_hider" = type { i8* }
+ %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Rep" = type { %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Rep_base" }
+ %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Rep_base" = type { i32, i32, i32 }
+ %"struct.std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >" = type { %"struct.std::_Vector_base<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >" }
+
+declare void @_Unwind_Resume(i8*)
+
+declare fastcc %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* @_ZSt24__uninitialized_copy_auxIPSsS0_ET0_T_S2_S1_St12__false_type(%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"*, %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"*, %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"*)
+
+define fastcc void @_ZNSt6vectorISsSaISsEE9push_backERKSs(%"struct.std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >,std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >"* nocapture %this, %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* nocapture %__x) {
+entry:
+ br i1 undef, label %_ZNSt12_Vector_baseISsSaISsEE11_M_allocateEj.exit.i, label %bb
+
+bb: ; preds = %entry
+ ret void
+
+_ZNSt12_Vector_baseISsSaISsEE11_M_allocateEj.exit.i: ; preds = %entry
+ %0 = invoke fastcc %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* @_ZSt24__uninitialized_copy_auxIPSsS0_ET0_T_S2_S1_St12__false_type(%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* undef, %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* undef, %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* undef)
+ to label %invcont14.i unwind label %ppad81.i ; <%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"*> [#uses=3]
+
+invcont14.i: ; preds = %_ZNSt12_Vector_baseISsSaISsEE11_M_allocateEj.exit.i
+ %1 = icmp eq %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* %0, null ; <i1> [#uses=1]
+ br i1 %1, label %bb19.i, label %bb.i17.i
+
+bb.i17.i: ; preds = %invcont14.i
+ %2 = invoke fastcc i8* @_ZNSs4_Rep8_M_cloneERKSaIcEj(%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Rep"* undef, i32 0)
+ to label %bb2.i25.i unwind label %ppad.i.i.i23.i ; <i8*> [#uses=0]
+
+ppad.i.i.i23.i: ; preds = %bb.i17.i
+ invoke void @_Unwind_Resume(i8* undef)
+ to label %.noexc.i24.i unwind label %lpad.i29.i
+
+.noexc.i24.i: ; preds = %ppad.i.i.i23.i
+ unreachable
+
+bb2.i25.i: ; preds = %bb.i17.i
+ unreachable
+
+lpad.i29.i: ; preds = %ppad.i.i.i23.i
+ invoke void @_Unwind_Resume(i8* undef)
+ to label %.noexc.i9 unwind label %ppad81.i
+
+.noexc.i9: ; preds = %lpad.i29.i
+ unreachable
+
+bb19.i: ; preds = %invcont14.i
+ %3 = getelementptr %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* %0, i32 1 ; <%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"*> [#uses=2]
+ %4 = invoke fastcc %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* @_ZSt24__uninitialized_copy_auxIPSsS0_ET0_T_S2_S1_St12__false_type(%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* undef, %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* undef, %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* %3)
+ to label %invcont20.i unwind label %ppad81.i ; <%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"*> [#uses=0]
+
+invcont20.i: ; preds = %bb19.i
+ unreachable
+
+invcont32.i: ; preds = %ppad81.i
+ unreachable
+
+ppad81.i: ; preds = %bb19.i, %lpad.i29.i, %_ZNSt12_Vector_baseISsSaISsEE11_M_allocateEj.exit.i
+ %__new_finish.0.i = phi %"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"* [ %0, %lpad.i29.i ], [ undef, %_ZNSt12_Vector_baseISsSaISsEE11_M_allocateEj.exit.i ], [ %3, %bb19.i ] ; <%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >"*> [#uses=0]
+ br i1 undef, label %invcont32.i, label %bb.i.i.i.i
+
+bb.i.i.i.i: ; preds = %bb.i.i.i.i, %ppad81.i
+ br label %bb.i.i.i.i
+}
+
+declare fastcc i8* @_ZNSs4_Rep8_M_cloneERKSaIcEj(%"struct.std::basic_string<char,std::char_traits<char>,std::allocator<char> >::_Rep"* nocapture, i32)