; LLVM IR from MakeContributions/DSA :: algorithms/CPlusPlus/Stacks (redundant-parenthesis)

; 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::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"class.std::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl" }
%"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl" = type { %"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl_data" }
%"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [18 x i8], align 1
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca %"class.std::__cxx11::basic_string", align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca %"class.std::stack", align 8
  %6 = alloca i8, align 1
  %7 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %8 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str)
  %9 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %8, ptr noundef @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.start.p0(i64 32, ptr %2) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #7
  %10 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(32) %2)
          to label %11 unwind label %19

11:                                               ; preds = %0
  call void @llvm.lifetime.start.p0(i64 80, ptr %5) #7
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %12 unwind label %23

12:                                               ; preds = %11
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #7
  store i8 0, ptr %6, align 1, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #7
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %13

13:                                               ; preds = %132, %12
  %14 = load i32, ptr %7, align 4, !tbaa !9
  %15 = sext i32 %14 to i64
  %16 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %2) #7
  %17 = icmp ult i64 %15, %16
  br i1 %17, label %27, label %18

18:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #7
  br label %135

19:                                               ; preds = %0
  %20 = landingpad { ptr, i32 }
          cleanup
  %21 = extractvalue { ptr, i32 } %20, 0
  store ptr %21, ptr %3, align 8
  %22 = extractvalue { ptr, i32 } %20, 1
  store i32 %22, ptr %4, align 4
  br label %152

23:                                               ; preds = %11
  %24 = landingpad { ptr, i32 }
          cleanup
  %25 = extractvalue { ptr, i32 } %24, 0
  store ptr %25, ptr %3, align 8
  %26 = extractvalue { ptr, i32 } %24, 1
  store i32 %26, ptr %4, align 4
  br label %151

27:                                               ; preds = %13
  %28 = load i32, ptr %7, align 4, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %29)
          to label %31 unwind label %65

31:                                               ; preds = %27
  %32 = load i8, ptr %30, align 1, !tbaa !11
  %33 = sext i8 %32 to i32
  %34 = icmp eq i32 %33, 43
  br i1 %34, label %59, label %35

35:                                               ; preds = %31
  %36 = load i32, ptr %7, align 4, !tbaa !9
  %37 = sext i32 %36 to i64
  %38 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %37)
          to label %39 unwind label %65

39:                                               ; preds = %35
  %40 = load i8, ptr %38, align 1, !tbaa !11
  %41 = sext i8 %40 to i32
  %42 = icmp eq i32 %41, 45
  br i1 %42, label %59, label %43

43:                                               ; preds = %39
  %44 = load i32, ptr %7, align 4, !tbaa !9
  %45 = sext i32 %44 to i64
  %46 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %45)
          to label %47 unwind label %65

47:                                               ; preds = %43
  %48 = load i8, ptr %46, align 1, !tbaa !11
  %49 = sext i8 %48 to i32
  %50 = icmp eq i32 %49, 42
  br i1 %50, label %59, label %51

51:                                               ; preds = %47
  %52 = load i32, ptr %7, align 4, !tbaa !9
  %53 = sext i32 %52 to i64
  %54 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %53)
          to label %55 unwind label %65

55:                                               ; preds = %51
  %56 = load i8, ptr %54, align 1, !tbaa !11
  %57 = sext i8 %56 to i32
  %58 = icmp eq i32 %57, 47
  br i1 %58, label %59, label %69

59:                                               ; preds = %55, %47, %39, %31
  %60 = load i32, ptr %7, align 4, !tbaa !9
  %61 = sext i32 %60 to i64
  %62 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %61)
          to label %63 unwind label %65

63:                                               ; preds = %59
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushERKc(ptr noundef nonnull align 8 dereferenceable(80) %5, ptr noundef nonnull align 1 dereferenceable(1) %62)
          to label %64 unwind label %65

64:                                               ; preds = %63
  br label %131

65:                                               ; preds = %127, %125, %117, %111, %105, %99, %91, %83, %81, %77, %69, %63, %59, %51, %43, %35, %27
  %66 = landingpad { ptr, i32 }
          cleanup
  %67 = extractvalue { ptr, i32 } %66, 0
  store ptr %67, ptr %3, align 8
  %68 = extractvalue { ptr, i32 } %66, 1
  store i32 %68, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #7
  br label %150

69:                                               ; preds = %55
  %70 = load i32, ptr %7, align 4, !tbaa !9
  %71 = sext i32 %70 to i64
  %72 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %71)
          to label %73 unwind label %65

73:                                               ; preds = %69
  %74 = load i8, ptr %72, align 1, !tbaa !11
  %75 = sext i8 %74 to i32
  %76 = icmp eq i32 %75, 40
  br i1 %76, label %77, label %83

77:                                               ; preds = %73
  %78 = load i32, ptr %7, align 4, !tbaa !9
  %79 = sext i32 %78 to i64
  %80 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %79)
          to label %81 unwind label %65

81:                                               ; preds = %77
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushERKc(ptr noundef nonnull align 8 dereferenceable(80) %5, ptr noundef nonnull align 1 dereferenceable(1) %80)
          to label %82 unwind label %65

82:                                               ; preds = %81
  br label %130

83:                                               ; preds = %73
  %84 = load i32, ptr %7, align 4, !tbaa !9
  %85 = sext i32 %84 to i64
  %86 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %85)
          to label %87 unwind label %65

87:                                               ; preds = %83
  %88 = load i8, ptr %86, align 1, !tbaa !11
  %89 = sext i8 %88 to i32
  %90 = icmp eq i32 %89, 41
  br i1 %90, label %91, label %129

91:                                               ; preds = %87
  %92 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %93 unwind label %65

93:                                               ; preds = %91
  %94 = load i8, ptr %92, align 1, !tbaa !11
  %95 = sext i8 %94 to i32
  %96 = icmp eq i32 %95, 40
  br i1 %96, label %97, label %98

97:                                               ; preds = %93
  store i8 1, ptr %6, align 1, !tbaa !5
  br label %98

98:                                               ; preds = %97, %93
  br label %99

99:                                               ; preds = %126, %98
  %100 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %101 unwind label %65

101:                                              ; preds = %99
  %102 = load i8, ptr %100, align 1, !tbaa !11
  %103 = sext i8 %102 to i32
  %104 = icmp eq i32 %103, 43
  br i1 %104, label %123, label %105

105:                                              ; preds = %101
  %106 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %107 unwind label %65

107:                                              ; preds = %105
  %108 = load i8, ptr %106, align 1, !tbaa !11
  %109 = sext i8 %108 to i32
  %110 = icmp eq i32 %109, 45
  br i1 %110, label %123, label %111

111:                                              ; preds = %107
  %112 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %113 unwind label %65

113:                                              ; preds = %111
  %114 = load i8, ptr %112, align 1, !tbaa !11
  %115 = sext i8 %114 to i32
  %116 = icmp eq i32 %115, 42
  br i1 %116, label %123, label %117

117:                                              ; preds = %113
  %118 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %119 unwind label %65

119:                                              ; preds = %117
  %120 = load i8, ptr %118, align 1, !tbaa !11
  %121 = sext i8 %120 to i32
  %122 = icmp eq i32 %121, 47
  br label %123

123:                                              ; preds = %119, %113, %107, %101
  %124 = phi i1 [ true, %113 ], [ true, %107 ], [ true, %101 ], [ %122, %119 ]
  br i1 %124, label %125, label %127

125:                                              ; preds = %123
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %126 unwind label %65

126:                                              ; preds = %125
  br label %99, !llvm.loop !12

127:                                              ; preds = %123
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %128 unwind label %65

128:                                              ; preds = %127
  br label %129

129:                                              ; preds = %128, %87
  br label %130

130:                                              ; preds = %129, %82
  br label %131

131:                                              ; preds = %130, %64
  br label %132

132:                                              ; preds = %131
  %133 = load i32, ptr %7, align 4, !tbaa !9
  %134 = add nsw i32 %133, 1
  store i32 %134, ptr %7, align 4, !tbaa !9
  br label %13, !llvm.loop !14

135:                                              ; preds = %18
  %136 = load i8, ptr %6, align 1, !tbaa !5, !range !15, !noundef !16
  %137 = trunc i8 %136 to i1
  br i1 %137, label %138, label %145

138:                                              ; preds = %135
  %139 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.1)
          to label %140 unwind label %141

140:                                              ; preds = %138
  br label %148

141:                                              ; preds = %145, %138
  %142 = landingpad { ptr, i32 }
          cleanup
  %143 = extractvalue { ptr, i32 } %142, 0
  store ptr %143, ptr %3, align 8
  %144 = extractvalue { ptr, i32 } %142, 1
  store i32 %144, ptr %4, align 4
  br label %150

145:                                              ; preds = %135
  %146 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef @.str.2)
          to label %147 unwind label %141

147:                                              ; preds = %145
  br label %148

148:                                              ; preds = %147, %140
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #7
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %5) #7
  call void @llvm.lifetime.end.p0(i64 80, ptr %5) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr %2) #7
  %149 = load i32, ptr %1, align 4
  ret i32 %149

150:                                              ; preds = %141, %65
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #7
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %5) #7
  br label %151

151:                                              ; preds = %150, %23
  call void @llvm.lifetime.end.p0(i64 80, ptr %5) #7
  br label %152

152:                                              ; preds = %151, %19
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %2) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr %2) #7
  br label %153

153:                                              ; preds = %152
  %154 = load ptr, ptr %3, align 8
  %155 = load i32, ptr %4, align 4
  %156 = insertvalue { ptr, i32 } poison, ptr %154, 0
  %157 = insertvalue { ptr, i32 } %156, i32 %155, 1
  resume { ptr, i32 } %157
}

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #1

; Function Attrs: mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) #2 align 2

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) #5

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushERKc(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 1 dereferenceable(1)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) #4 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #6 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4 align 2

attributes #0 = { mustprogress norecurse 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 = { 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 #2 = { 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 #3 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 #5 = { "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 #6 = { inlinehint 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 #7 = { 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 = !{!"bool", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = distinct !{!14, !13}
!15 = !{i8 0, i8 2}
!16 = !{}


; 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::basic_ostream" = type { ptr, %"class.std::basic_ios" }
%"class.std::basic_ios" = type { %"class.std::ios_base", ptr, i8, i8, ptr, ptr, ptr, ptr }
%"class.std::ios_base" = type { ptr, i64, i64, i32, i32, i32, ptr, %"struct.std::ios_base::_Words", [8 x %"struct.std::ios_base::_Words"], i32, ptr, %"class.std::locale" }
%"struct.std::ios_base::_Words" = type { ptr, i64 }
%"class.std::locale" = type { ptr }
%"class.std::basic_istream" = type { ptr, i64, %"class.std::basic_ios" }
%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }
%"class.std::stack" = type { %"class.std::deque" }
%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl" }
%"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl" = type { %"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl_data" }
%"struct.std::_Deque_base<char, std::allocator<char>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }

@_ZSt4cout = external global %"class.std::basic_ostream", align 8
@.str = external hidden unnamed_addr constant [18 x i8], align 1
@_ZSt3cin = external global %"class.std::basic_istream", align 8
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca %"class.std::__cxx11::basic_string", align 8
  %2 = alloca %"class.std::stack", align 8
  %3 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull @.str)
  %4 = tail call noundef nonnull align 8 dereferenceable(8) ptr @_ZNSolsEPFRSoS_E(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %1) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #7
  %5 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 8 dereferenceable(32) %1)
          to label %6 unwind label %8

6:                                                ; preds = %0
  call void @llvm.lifetime.start.p0(i64 80, ptr nonnull %2) #7
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
          to label %.preheader unwind label %10

.preheader:                                       ; preds = %6
  %7 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #7
  %.not = icmp eq i64 %7, 0
  br i1 %.not, label %.critedge27.invoke, label %.lr.ph

._crit_edge:                                      ; preds = %61
  %spec.select28 = select i1 %.2, ptr @.str.1, ptr @.str.2
  br label %.critedge27.invoke

8:                                                ; preds = %0
  %9 = landingpad { ptr, i32 }
          cleanup
  br label %71

10:                                               ; preds = %6
  %11 = landingpad { ptr, i32 }
          cleanup
  br label %70

.lr.ph:                                           ; preds = %.preheader, %61
  %indvars.iv = phi i64 [ %indvars.iv.next, %61 ], [ 0, %.preheader ]
  %.01325 = phi i1 [ %.2, %61 ], [ false, %.preheader ]
  %12 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %indvars.iv)
  %13 = load i8, ptr %12, align 1, !tbaa !5
  %14 = icmp eq i8 %13, 43
  br i1 %14, label %27, label %15

15:                                               ; preds = %.lr.ph
  %16 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %indvars.iv)
  %17 = load i8, ptr %16, align 1, !tbaa !5
  %18 = icmp eq i8 %17, 45
  br i1 %18, label %27, label %19

19:                                               ; preds = %15
  %20 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %indvars.iv)
  %21 = load i8, ptr %20, align 1, !tbaa !5
  %22 = icmp eq i8 %21, 42
  br i1 %22, label %27, label %23

23:                                               ; preds = %19
  %24 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %indvars.iv)
  %25 = load i8, ptr %24, align 1, !tbaa !5
  %26 = icmp eq i8 %25, 47
  br i1 %26, label %27, label %31

27:                                               ; preds = %23, %19, %15, %.lr.ph
  %28 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %indvars.iv)
  br label %.invoke

29:                                               ; preds = %.invoke
  %30 = landingpad { ptr, i32 }
          cleanup
  br label %69

31:                                               ; preds = %23
  %32 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %indvars.iv)
  %33 = load i8, ptr %32, align 1, !tbaa !5
  %34 = icmp eq i8 %33, 40
  %35 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %indvars.iv)
  br i1 %34, label %.invoke, label %37

.invoke:                                          ; preds = %31, %27
  %36 = phi ptr [ %28, %27 ], [ %35, %31 ]
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushERKc(ptr noundef nonnull align 8 dereferenceable(80) %2, ptr noundef nonnull align 1 dereferenceable(1) %36)
          to label %61 unwind label %29

37:                                               ; preds = %31
  %38 = load i8, ptr %35, align 1, !tbaa !5
  %39 = icmp eq i8 %38, 41
  br i1 %39, label %40, label %61

40:                                               ; preds = %37
  %41 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %42 = load i8, ptr %41, align 1, !tbaa !5
  %43 = icmp eq i8 %42, 40
  br label %44

44:                                               ; preds = %.critedge, %40
  %45 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %46 = load i8, ptr %45, align 1, !tbaa !5
  %47 = icmp eq i8 %46, 43
  br i1 %47, label %.critedge, label %48

48:                                               ; preds = %44
  %49 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %50 = load i8, ptr %49, align 1, !tbaa !5
  %51 = icmp eq i8 %50, 45
  br i1 %51, label %.critedge, label %52

52:                                               ; preds = %48
  %53 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %54 = load i8, ptr %53, align 1, !tbaa !5
  %55 = icmp eq i8 %54, 42
  br i1 %55, label %.critedge, label %56

56:                                               ; preds = %52
  %57 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  %58 = load i8, ptr %57, align 1, !tbaa !5
  %59 = icmp eq i8 %58, 47
  br i1 %59, label %.critedge, label %60

.critedge:                                        ; preds = %52, %48, %44, %56
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  br label %44, !llvm.loop !8

60:                                               ; preds = %56
  %spec.select = select i1 %43, i1 true, i1 %.01325
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %2)
  br label %61

61:                                               ; preds = %.invoke, %37, %60
  %.2 = phi i1 [ %spec.select, %60 ], [ %.01325, %37 ], [ %.01325, %.invoke ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %62 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #7
  %63 = icmp ugt i64 %62, %indvars.iv.next
  br i1 %63, label %.lr.ph, label %._crit_edge, !llvm.loop !10

64:                                               ; preds = %.critedge27.invoke
  %65 = landingpad { ptr, i32 }
          cleanup
  br label %69

.critedge27.invoke:                               ; preds = %._crit_edge, %.preheader
  %66 = phi ptr [ @.str.2, %.preheader ], [ %spec.select28, %._crit_edge ]
  %67 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull %66)
          to label %68 unwind label %64

68:                                               ; preds = %.critedge27.invoke
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %2) #7
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %2) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %1) #7
  ret i32 0

69:                                               ; preds = %64, %29
  %.pn = phi { ptr, i32 } [ %30, %29 ], [ %65, %64 ]
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %2) #7
  br label %70

70:                                               ; preds = %69, %10
  %.pn.pn = phi { ptr, i32 } [ %.pn, %69 ], [ %11, %10 ]
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %2) #7
  br label %71

71:                                               ; preds = %70, %8
  %.pn.pn.pn = phi { ptr, i32 } [ %.pn.pn, %70 ], [ %9, %8 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %1) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %1) #7
  resume { ptr, i32 } %.pn.pn.pn
}

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsISt11char_traitsIcEERSt13basic_ostreamIcT_ES5_PKc(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef) local_unnamed_addr #1

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

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_(ptr noundef nonnull align 8 dereferenceable(8)) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4 align 2

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZStrsIcSt11char_traitsIcESaIcEERSt13basic_istreamIT_T0_ES7_RNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #5

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushERKc(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt5stackIcSt5dequeIcSaIcEEE3topEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #4 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #6 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #4 align 2

attributes #0 = { mustprogress norecurse 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 = { 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 #2 = { 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 #3 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 #5 = { "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 #6 = { inlinehint 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 #7 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}
!10 = distinct !{!10, !9}


; Effective O3 passes: AggressiveInstCombinePass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass