; LLVM IR from xirc/cp-algorithm :: aoj/ALDS1/ALDS5D/main.ll (Z5mergeRSt6vectorIiSaIiEEiii)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z5mergeRSt6vectorIiSaIiEEiii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #0 personality ptr @__gxx_personality_v0 {
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i64, align 8
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca %"class.std::vector", align 8
  %13 = alloca %"class.std::allocator", align 1
  %14 = alloca ptr, align 8
  %15 = alloca i32, align 4
  %16 = alloca %"class.std::vector", align 8
  %17 = alloca %"class.std::allocator", align 1
  %18 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %19 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %20 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %21 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %22 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %23 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %24 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %25 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %26 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %27 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %28 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %29 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %30 = alloca i32, align 4
  %31 = alloca i32, align 4
  %32 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  store i32 %3, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  store i64 0, ptr %9, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #4
  %33 = load i32, ptr %7, align 4, !tbaa !9
  %34 = load i32, ptr %6, align 4, !tbaa !9
  %35 = sub nsw i32 %33, %34
  store i32 %35, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #4
  %36 = load i32, ptr %8, align 4, !tbaa !9
  %37 = load i32, ptr %7, align 4, !tbaa !9
  %38 = sub nsw i32 %36, %37
  store i32 %38, ptr %11, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 24, ptr %12) #4
  %39 = load i32, ptr %10, align 4, !tbaa !9
  %40 = add nsw i32 %39, 1
  %41 = sext i32 %40 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr %13) #4
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %13) #4
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %41, ptr noundef nonnull align 1 dereferenceable(1) %13)
          to label %42 unwind label %109

42:                                               ; preds = %4
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %13) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %13) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr %16) #4
  %43 = load i32, ptr %11, align 4, !tbaa !9
  %44 = add nsw i32 %43, 1
  %45 = sext i32 %44 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr %17) #4
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %17) #4
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %16, i64 noundef %45, ptr noundef nonnull align 1 dereferenceable(1) %17)
          to label %46 unwind label %113

46:                                               ; preds = %42
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %17) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %17) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %19) #4
  %47 = load ptr, ptr %5, align 8, !tbaa !5
  %48 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %47) #4
  %49 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %19, i32 0, i32 0
  store ptr %48, ptr %49, align 8
  %50 = load i32, ptr %6, align 4, !tbaa !9
  %51 = sext i32 %50 to i64
  %52 = call ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8) %19, i64 noundef %51) #4
  %53 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %18, i32 0, i32 0
  store ptr %52, ptr %53, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %21) #4
  %54 = load ptr, ptr %5, align 8, !tbaa !5
  %55 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %54) #4
  %56 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %21, i32 0, i32 0
  store ptr %55, ptr %56, align 8
  %57 = load i32, ptr %7, align 4, !tbaa !9
  %58 = sext i32 %57 to i64
  %59 = call ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8) %21, i64 noundef %58) #4
  %60 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %20, i32 0, i32 0
  store ptr %59, ptr %60, align 8
  %61 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %12) #4
  %62 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %22, i32 0, i32 0
  store ptr %61, ptr %62, align 8
  %63 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %18, i32 0, i32 0
  %64 = load ptr, ptr %63, align 8
  %65 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %20, i32 0, i32 0
  %66 = load ptr, ptr %65, align 8
  %67 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %22, i32 0, i32 0
  %68 = load ptr, ptr %67, align 8
  %69 = invoke ptr @_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEES6_ET0_T_S8_S7_(ptr %64, ptr %66, ptr %68)
          to label %70 unwind label %117

70:                                               ; preds = %46
  %71 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %23, i32 0, i32 0
  store ptr %69, ptr %71, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %21) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %19) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %25) #4
  %72 = load ptr, ptr %5, align 8, !tbaa !5
  %73 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %72) #4
  %74 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %25, i32 0, i32 0
  store ptr %73, ptr %74, align 8
  %75 = load i32, ptr %7, align 4, !tbaa !9
  %76 = sext i32 %75 to i64
  %77 = call ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8) %25, i64 noundef %76) #4
  %78 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %24, i32 0, i32 0
  store ptr %77, ptr %78, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %27) #4
  %79 = load ptr, ptr %5, align 8, !tbaa !5
  %80 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %79) #4
  %81 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %27, i32 0, i32 0
  store ptr %80, ptr %81, align 8
  %82 = load i32, ptr %8, align 4, !tbaa !9
  %83 = sext i32 %82 to i64
  %84 = call ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8) %27, i64 noundef %83) #4
  %85 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %26, i32 0, i32 0
  store ptr %84, ptr %85, align 8
  %86 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %16) #4
  %87 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %28, i32 0, i32 0
  store ptr %86, ptr %87, align 8
  %88 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %24, i32 0, i32 0
  %89 = load ptr, ptr %88, align 8
  %90 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %26, i32 0, i32 0
  %91 = load ptr, ptr %90, align 8
  %92 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %28, i32 0, i32 0
  %93 = load ptr, ptr %92, align 8
  %94 = invoke ptr @_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEES6_ET0_T_S8_S7_(ptr %89, ptr %91, ptr %93)
          to label %95 unwind label %121

95:                                               ; preds = %70
  %96 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator", ptr %29, i32 0, i32 0
  store ptr %94, ptr %96, align 8
  call void @llvm.lifetime.end.p0(i64 8, ptr %27) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %25) #4
  %97 = load i32, ptr %10, align 4, !tbaa !9
  %98 = sext i32 %97 to i64
  %99 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %98) #4
  store i32 1000000001, ptr %99, align 4, !tbaa !9
  %100 = load i32, ptr %11, align 4, !tbaa !9
  %101 = sext i32 %100 to i64
  %102 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %16, i64 noundef %101) #4
  store i32 1000000001, ptr %102, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %30) #4
  store i32 0, ptr %30, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %31) #4
  store i32 0, ptr %31, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %32) #4
  %103 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %103, ptr %32, align 4, !tbaa !9
  br label %104

104:                                              ; preds = %164, %95
  %105 = load i32, ptr %32, align 4, !tbaa !9
  %106 = load i32, ptr %8, align 4, !tbaa !9
  %107 = icmp slt i32 %105, %106
  br i1 %107, label %125, label %108

108:                                              ; preds = %104
  call void @llvm.lifetime.end.p0(i64 4, ptr %32) #4
  br label %167

109:                                              ; preds = %4
  %110 = landingpad { ptr, i32 }
          cleanup
  %111 = extractvalue { ptr, i32 } %110, 0
  store ptr %111, ptr %14, align 8
  %112 = extractvalue { ptr, i32 } %110, 1
  store i32 %112, ptr %15, align 4
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %13) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %13) #4
  br label %171

113:                                              ; preds = %42
  %114 = landingpad { ptr, i32 }
          cleanup
  %115 = extractvalue { ptr, i32 } %114, 0
  store ptr %115, ptr %14, align 8
  %116 = extractvalue { ptr, i32 } %114, 1
  store i32 %116, ptr %15, align 4
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %17) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %17) #4
  br label %170

117:                                              ; preds = %46
  %118 = landingpad { ptr, i32 }
          cleanup
  %119 = extractvalue { ptr, i32 } %118, 0
  store ptr %119, ptr %14, align 8
  %120 = extractvalue { ptr, i32 } %118, 1
  store i32 %120, ptr %15, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %21) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %19) #4
  br label %169

121:                                              ; preds = %70
  %122 = landingpad { ptr, i32 }
          cleanup
  %123 = extractvalue { ptr, i32 } %122, 0
  store ptr %123, ptr %14, align 8
  %124 = extractvalue { ptr, i32 } %122, 1
  store i32 %124, ptr %15, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %27) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %25) #4
  br label %169

125:                                              ; preds = %104
  %126 = load i32, ptr %30, align 4, !tbaa !9
  %127 = sext i32 %126 to i64
  %128 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %127) #4
  %129 = load i32, ptr %128, align 4, !tbaa !9
  %130 = load i32, ptr %31, align 4, !tbaa !9
  %131 = sext i32 %130 to i64
  %132 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %16, i64 noundef %131) #4
  %133 = load i32, ptr %132, align 4, !tbaa !9
  %134 = icmp sle i32 %129, %133
  br i1 %134, label %135, label %146

135:                                              ; preds = %125
  %136 = load i32, ptr %30, align 4, !tbaa !9
  %137 = sext i32 %136 to i64
  %138 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %12, i64 noundef %137) #4
  %139 = load i32, ptr %138, align 4, !tbaa !9
  %140 = load ptr, ptr %5, align 8, !tbaa !5
  %141 = load i32, ptr %32, align 4, !tbaa !9
  %142 = sext i32 %141 to i64
  %143 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %140, i64 noundef %142) #4
  store i32 %139, ptr %143, align 4, !tbaa !9
  %144 = load i32, ptr %30, align 4, !tbaa !9
  %145 = add nsw i32 %144, 1
  store i32 %145, ptr %30, align 4, !tbaa !9
  br label %163

146:                                              ; preds = %125
  %147 = load i32, ptr %10, align 4, !tbaa !9
  %148 = load i32, ptr %30, align 4, !tbaa !9
  %149 = sub nsw i32 %147, %148
  %150 = sext i32 %149 to i64
  %151 = load i64, ptr %9, align 8, !tbaa !11
  %152 = add nsw i64 %151, %150
  store i64 %152, ptr %9, align 8, !tbaa !11
  %153 = load i32, ptr %31, align 4, !tbaa !9
  %154 = sext i32 %153 to i64
  %155 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %16, i64 noundef %154) #4
  %156 = load i32, ptr %155, align 4, !tbaa !9
  %157 = load ptr, ptr %5, align 8, !tbaa !5
  %158 = load i32, ptr %32, align 4, !tbaa !9
  %159 = sext i32 %158 to i64
  %160 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %157, i64 noundef %159) #4
  store i32 %156, ptr %160, align 4, !tbaa !9
  %161 = load i32, ptr %31, align 4, !tbaa !9
  %162 = add nsw i32 %161, 1
  store i32 %162, ptr %31, align 4, !tbaa !9
  br label %163

163:                                              ; preds = %146, %135
  br label %164

164:                                              ; preds = %163
  %165 = load i32, ptr %32, align 4, !tbaa !9
  %166 = add nsw i32 %165, 1
  store i32 %166, ptr %32, align 4, !tbaa !9
  br label %104, !llvm.loop !13

167:                                              ; preds = %108
  %168 = load i64, ptr %9, align 8, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %31) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %30) #4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %16) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr %16) #4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  ret i64 %168

169:                                              ; preds = %121, %117
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %16) #4
  br label %170

170:                                              ; preds = %169, %113
  call void @llvm.lifetime.end.p0(i64 24, ptr %16) #4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %12) #4
  br label %171

171:                                              ; preds = %170, %109
  call void @llvm.lifetime.end.p0(i64 24, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  br label %172

172:                                              ; preds = %171
  %173 = load ptr, ptr %14, align 8
  %174 = load i32, ptr %15, align 4
  %175 = insertvalue { ptr, i32 } poison, ptr %173, 0
  %176 = insertvalue { ptr, i32 } %175, i32 %174, 1
  resume { ptr, i32 } %176
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local ptr @_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEES6_ET0_T_S8_S7_(ptr, ptr, ptr) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::allocator" = type { i8 }
%"class.__gnu_cxx::__normal_iterator" = type { ptr }

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z5mergeRSt6vectorIiSaIiEEiii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %5 = alloca %"class.std::vector", align 8
  %6 = alloca %"class.std::allocator", align 1
  %7 = alloca %"class.std::vector", align 8
  %8 = alloca %"class.std::allocator", align 1
  %9 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %10 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %11 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %12 = alloca %"class.__gnu_cxx::__normal_iterator", align 8
  %13 = sub nsw i32 %2, %1
  %14 = sub nsw i32 %3, %2
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %5) #4
  %15 = add nsw i32 %13, 1
  %16 = sext i32 %15 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %6) #4
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #4
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %16, ptr noundef nonnull align 1 dereferenceable(1) %6)
          to label %17 unwind label %43

17:                                               ; preds = %4
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %7) #4
  %18 = add nsw i32 %14, 1
  %19 = sext i32 %18 to i64
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %8) #4
  call void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %8) #4
  invoke void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %19, ptr noundef nonnull align 1 dereferenceable(1) %8)
          to label %20 unwind label %45

20:                                               ; preds = %17
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %8) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %8) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %9) #4
  %21 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  store ptr %21, ptr %9, align 8
  %22 = sext i32 %1 to i64
  %23 = call ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8) %9, i64 noundef %22) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %10) #4
  %24 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  store ptr %24, ptr %10, align 8
  %25 = sext i32 %2 to i64
  %26 = call ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8) %10, i64 noundef %25) #4
  %27 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %5) #4
  %28 = invoke ptr @_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEES6_ET0_T_S8_S7_(ptr %23, ptr %26, ptr %27)
          to label %29 unwind label %47

29:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %10) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %9) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %11) #4
  %30 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  store ptr %30, ptr %11, align 8
  %31 = call ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8) %11, i64 noundef %25) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %12) #4
  %32 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  store ptr %32, ptr %12, align 8
  %33 = sext i32 %3 to i64
  %34 = call ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8) %12, i64 noundef %33) #4
  %35 = call ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  %36 = invoke ptr @_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEES6_ET0_T_S8_S7_(ptr %31, ptr %34, ptr %35)
          to label %37 unwind label %49

37:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %12) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %11) #4
  %38 = sext i32 %13 to i64
  %39 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %38) #4
  store i32 1000000001, ptr %39, align 4, !tbaa !5
  %40 = sext i32 %14 to i64
  %41 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %40) #4
  store i32 1000000001, ptr %41, align 4, !tbaa !5
  %42 = icmp slt i32 %1, %3
  br i1 %42, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %70, %37
  %.045.lcssa = phi i64 [ 0, %37 ], [ %.146, %70 ]
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %7) #4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %5) #4
  ret i64 %.045.lcssa

43:                                               ; preds = %4
  %44 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #4
  br label %73

45:                                               ; preds = %17
  %46 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %8) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %8) #4
  br label %72

47:                                               ; preds = %20
  %48 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %10) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %9) #4
  br label %71

49:                                               ; preds = %29
  %50 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %12) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %11) #4
  br label %71

.lr.ph:                                           ; preds = %37, %70
  %indvars.iv = phi i64 [ %indvars.iv.next, %70 ], [ %22, %37 ]
  %.04257 = phi i32 [ %.1, %70 ], [ 0, %37 ]
  %.04356 = phi i32 [ %.144, %70 ], [ 0, %37 ]
  %.04555 = phi i64 [ %.146, %70 ], [ 0, %37 ]
  %51 = sext i32 %.04356 to i64
  %52 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %51) #4
  %53 = load i32, ptr %52, align 4, !tbaa !5
  %54 = sext i32 %.04257 to i64
  %55 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %54) #4
  %56 = load i32, ptr %55, align 4, !tbaa !5
  %.not = icmp sgt i32 %53, %56
  br i1 %.not, label %62, label %57

57:                                               ; preds = %.lr.ph
  %58 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %5, i64 noundef %51) #4
  %59 = load i32, ptr %58, align 4, !tbaa !5
  %60 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #4
  store i32 %59, ptr %60, align 4, !tbaa !5
  %61 = add nsw i32 %.04356, 1
  br label %70

62:                                               ; preds = %.lr.ph
  %63 = sub nsw i32 %13, %.04356
  %64 = sext i32 %63 to i64
  %65 = add nsw i64 %.04555, %64
  %66 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %7, i64 noundef %54) #4
  %67 = load i32, ptr %66, align 4, !tbaa !5
  %68 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #4
  store i32 %67, ptr %68, align 4, !tbaa !5
  %69 = add nsw i32 %.04257, 1
  br label %70

70:                                               ; preds = %57, %62
  %.146 = phi i64 [ %.04555, %57 ], [ %65, %62 ]
  %.144 = phi i32 [ %61, %57 ], [ %.04356, %62 ]
  %.1 = phi i32 [ %.04257, %57 ], [ %69, %62 ]
  %indvars.iv.next = add nsw i64 %indvars.iv, 1
  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
  %exitcond.not = icmp eq i32 %lftr.wideiv, %3
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !9

71:                                               ; preds = %49, %47
  %.pn = phi { ptr, i32 } [ %50, %49 ], [ %48, %47 ]
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  br label %72

72:                                               ; preds = %71, %45
  %.pn.pn = phi { ptr, i32 } [ %.pn, %71 ], [ %46, %45 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %7) #4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %5) #4
  br label %73

73:                                               ; preds = %72, %43
  %.pn.pn.pn = phi { ptr, i32 } [ %.pn.pn, %72 ], [ %44, %43 ]
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %5) #4
  resume { ptr, i32 } %.pn.pn.pn
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSaIiEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2EmRKS0_(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local ptr @_ZSt4copyIN9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEES6_ET0_T_S8_S7_(ptr, ptr, ptr) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIiSaIiEE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNK9__gnu_cxx17__normal_iteratorIPiSt6vectorIiSaIiEEEplEl(ptr noundef nonnull align 8 dereferenceable(8), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIiED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

attributes #0 = { mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { inlinehint mustprogress uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #4 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass