; LLVM IR from Mohammed-Shoaib/Coding-Problems :: CodeChef/Beginner (B0086)

; 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::__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 }
%"class.std::allocator" = type { i8 }

@.str = external hidden unnamed_addr constant [8 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z15snakeProcessionNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr noundef %1) #0 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca %"class.std::stack", align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca %"class.std::allocator", align 1
  %11 = alloca i8, align 1
  %12 = alloca %"class.std::allocator", align 1
  %13 = alloca i8, align 1
  %14 = alloca %"class.std::allocator", align 1
  store ptr %0, ptr %3, align 8
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 80, ptr %5) #4
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %86, %2
  %16 = load i32, ptr %6, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #4
  %19 = icmp ult i64 %17, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %15
  store i32 2, ptr %7, align 4
  br label %89

21:                                               ; preds = %15
  %22 = load i32, ptr %6, align 4, !tbaa !9
  %23 = sext i32 %22 to i64
  %24 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %23)
          to label %25 unwind label %35

25:                                               ; preds = %21
  %26 = load i8, ptr %24, align 1, !tbaa !11
  %27 = sext i8 %26 to i32
  %28 = icmp eq i32 %27, 72
  br i1 %28, label %29, label %56

29:                                               ; preds = %25
  %30 = invoke noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %31 unwind label %35

31:                                               ; preds = %29
  %32 = icmp eq i64 %30, 1
  br i1 %32, label %33, label %43

33:                                               ; preds = %31
  call void @llvm.lifetime.start.p0(i64 1, ptr %10) #4
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %10) #4
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef @.str, ptr noundef nonnull align 1 dereferenceable(1) %10)
          to label %34 unwind label %39

34:                                               ; preds = %33
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %10) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %10) #4
  store i32 1, ptr %7, align 4
  br label %89

35:                                               ; preds = %68, %64, %56, %48, %44, %29, %21
  %36 = landingpad { ptr, i32 }
          cleanup
  %37 = extractvalue { ptr, i32 } %36, 0
  store ptr %37, ptr %8, align 8
  %38 = extractvalue { ptr, i32 } %36, 1
  store i32 %38, ptr %9, align 4
  br label %91

39:                                               ; preds = %33
  %40 = landingpad { ptr, i32 }
          cleanup
  %41 = extractvalue { ptr, i32 } %40, 0
  store ptr %41, ptr %8, align 8
  %42 = extractvalue { ptr, i32 } %40, 1
  store i32 %42, ptr %9, align 4
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %10) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %10) #4
  br label %91

43:                                               ; preds = %31
  br label %44

44:                                               ; preds = %49, %43
  %45 = invoke noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %46 unwind label %35

46:                                               ; preds = %44
  %47 = xor i1 %45, true
  br i1 %47, label %48, label %50

48:                                               ; preds = %46
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %49 unwind label %35

49:                                               ; preds = %48
  br label %44, !llvm.loop !12

50:                                               ; preds = %46
  call void @llvm.lifetime.start.p0(i64 1, ptr %11) #4
  store i8 72, ptr %11, align 1, !tbaa !11
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushEOc(ptr noundef nonnull align 8 dereferenceable(80) %5, ptr noundef nonnull align 1 dereferenceable(1) %11)
          to label %51 unwind label %52

51:                                               ; preds = %50
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #4
  br label %85

52:                                               ; preds = %50
  %53 = landingpad { ptr, i32 }
          cleanup
  %54 = extractvalue { ptr, i32 } %53, 0
  store ptr %54, ptr %8, align 8
  %55 = extractvalue { ptr, i32 } %53, 1
  store i32 %55, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 1, ptr %11) #4
  br label %91

56:                                               ; preds = %25
  %57 = load i32, ptr %6, align 4, !tbaa !9
  %58 = sext i32 %57 to i64
  %59 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %58)
          to label %60 unwind label %35

60:                                               ; preds = %56
  %61 = load i8, ptr %59, align 1, !tbaa !11
  %62 = sext i8 %61 to i32
  %63 = icmp eq i32 %62, 84
  br i1 %63, label %64, label %84

64:                                               ; preds = %60
  %65 = invoke noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %66 unwind label %35

66:                                               ; preds = %64
  %67 = icmp eq i64 %65, 0
  br i1 %67, label %72, label %68

68:                                               ; preds = %66
  %69 = invoke noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %70 unwind label %35

70:                                               ; preds = %68
  %71 = icmp ugt i64 %69, 1
  br i1 %71, label %72, label %78

72:                                               ; preds = %70, %66
  call void @llvm.lifetime.start.p0(i64 1, ptr %12) #4
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %12) #4
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef @.str, ptr noundef nonnull align 1 dereferenceable(1) %12)
          to label %73 unwind label %74

73:                                               ; preds = %72
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %12) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %12) #4
  store i32 1, ptr %7, align 4
  br label %89

74:                                               ; preds = %72
  %75 = landingpad { ptr, i32 }
          cleanup
  %76 = extractvalue { ptr, i32 } %75, 0
  store ptr %76, ptr %8, align 8
  %77 = extractvalue { ptr, i32 } %75, 1
  store i32 %77, ptr %9, align 4
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %12) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %12) #4
  br label %91

78:                                               ; preds = %70
  call void @llvm.lifetime.start.p0(i64 1, ptr %13) #4
  store i8 84, ptr %13, align 1, !tbaa !11
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushEOc(ptr noundef nonnull align 8 dereferenceable(80) %5, ptr noundef nonnull align 1 dereferenceable(1) %13)
          to label %79 unwind label %80

79:                                               ; preds = %78
  call void @llvm.lifetime.end.p0(i64 1, ptr %13) #4
  br label %84

80:                                               ; preds = %78
  %81 = landingpad { ptr, i32 }
          cleanup
  %82 = extractvalue { ptr, i32 } %81, 0
  store ptr %82, ptr %8, align 8
  %83 = extractvalue { ptr, i32 } %81, 1
  store i32 %83, ptr %9, align 4
  call void @llvm.lifetime.end.p0(i64 1, ptr %13) #4
  br label %91

84:                                               ; preds = %79, %60
  br label %85

85:                                               ; preds = %84, %51
  br label %86

86:                                               ; preds = %85
  %87 = load i32, ptr %6, align 4, !tbaa !9
  %88 = add nsw i32 %87, 1
  store i32 %88, ptr %6, align 4, !tbaa !9
  br label %15, !llvm.loop !14

89:                                               ; preds = %73, %34, %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  %90 = load i32, ptr %7, align 4
  switch i32 %90, label %112 [
    i32 2, label %92
  ]

91:                                               ; preds = %80, %74, %52, %39, %35
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %113

92:                                               ; preds = %89
  %93 = invoke noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %94 unwind label %104

94:                                               ; preds = %92
  br i1 %93, label %99, label %95

95:                                               ; preds = %94
  %96 = invoke noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %5)
          to label %97 unwind label %104

97:                                               ; preds = %95
  %98 = icmp eq i64 %96, 2
  br label %99

99:                                               ; preds = %97, %94
  %100 = phi i1 [ true, %94 ], [ %98, %97 ]
  %101 = zext i1 %100 to i64
  %102 = select i1 %100, ptr @.str.1, ptr @.str
  call void @llvm.lifetime.start.p0(i64 1, ptr %14) #4
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %14) #4
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef %102, ptr noundef nonnull align 1 dereferenceable(1) %14)
          to label %103 unwind label %108

103:                                              ; preds = %99
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %14) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %14) #4
  store i32 1, ptr %7, align 4
  br label %112

104:                                              ; preds = %95, %92
  %105 = landingpad { ptr, i32 }
          cleanup
  %106 = extractvalue { ptr, i32 } %105, 0
  store ptr %106, ptr %8, align 8
  %107 = extractvalue { ptr, i32 } %105, 1
  store i32 %107, ptr %9, align 4
  br label %113

108:                                              ; preds = %99
  %109 = landingpad { ptr, i32 }
          cleanup
  %110 = extractvalue { ptr, i32 } %109, 0
  store ptr %110, ptr %8, align 8
  %111 = extractvalue { ptr, i32 } %109, 1
  store i32 %111, ptr %9, align 4
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %14) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %14) #4
  br label %113

112:                                              ; preds = %103, %89
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %5) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr %5) #4
  ret void

113:                                              ; preds = %108, %104, %91
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %5) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr %5) #4
  br label %114

114:                                              ; preds = %113
  %115 = load ptr, ptr %8, align 8
  %116 = load i32, ptr %9, align 4
  %117 = insertvalue { ptr, i32 } poison, ptr %115, 0
  %118 = insertvalue { ptr, i32 } %117, i32 %116, 1
  resume { ptr, i32 } %118
}

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) #2 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) #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushEOc(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 1 dereferenceable(1)) #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(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 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 #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 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = distinct !{!14, !13}


; 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::__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 }
%"class.std::allocator" = type { i8 }

@.str = external hidden unnamed_addr constant [8 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z15snakeProcessionNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr noundef %1) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %3 = alloca %"class.std::stack", align 8
  %4 = alloca %"class.std::allocator", align 1
  %5 = alloca i8, align 1
  %6 = alloca %"class.std::allocator", align 1
  %7 = alloca i8, align 1
  %8 = alloca %"class.std::allocator", align 1
  call void @llvm.lifetime.start.p0(i64 80, ptr nonnull %3) #4
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  %9 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #4
  %.not14.not = icmp eq i64 %9, 0
  br i1 %.not14.not, label %.critedge, label %.lr.ph17

.lr.ph17:                                         ; preds = %2, %43
  %indvars.iv = phi i64 [ %indvars.iv.next, %43 ], [ 0, %2 ]
  %10 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %indvars.iv)
  %11 = load i8, ptr %10, align 1, !tbaa !5
  %12 = icmp eq i8 %11, 72
  br i1 %12, label %13, label %25

13:                                               ; preds = %.lr.ph17
  %14 = call noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  %15 = icmp eq i64 %14, 1
  br i1 %15, label %17, label %.preheader

.preheader:                                       ; preds = %13
  %16 = call noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  br i1 %16, label %._crit_edge, label %.lr.ph

17:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #4
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #4
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull @.str, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %18 unwind label %19

18:                                               ; preds = %17
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #4
  br label %55

19:                                               ; preds = %17
  %20 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #4
  br label %56

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEE3popEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  %21 = call noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  br i1 %21, label %._crit_edge, label %.lr.ph, !llvm.loop !8

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %5) #4
  store i8 72, ptr %5, align 1, !tbaa !5
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushEOc(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 1 dereferenceable(1) %5)
          to label %22 unwind label %23

22:                                               ; preds = %._crit_edge
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #4
  br label %43

23:                                               ; preds = %._crit_edge
  %24 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #4
  br label %56

25:                                               ; preds = %.lr.ph17
  %26 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %indvars.iv)
  %27 = load i8, ptr %26, align 1, !tbaa !5
  %28 = icmp eq i8 %27, 84
  br i1 %28, label %29, label %43

29:                                               ; preds = %25
  %30 = call noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  %31 = icmp eq i64 %30, 0
  br i1 %31, label %35, label %32

32:                                               ; preds = %29
  %33 = call noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  %34 = icmp ugt i64 %33, 1
  br i1 %34, label %35, label %39

35:                                               ; preds = %32, %29
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %6) #4
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #4
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull @.str, ptr noundef nonnull align 1 dereferenceable(1) %6)
          to label %36 unwind label %37

36:                                               ; preds = %35
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #4
  br label %55

37:                                               ; preds = %35
  %38 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #4
  br label %56

39:                                               ; preds = %32
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %7) #4
  store i8 84, ptr %7, align 1, !tbaa !5
  invoke void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushEOc(ptr noundef nonnull align 8 dereferenceable(80) %3, ptr noundef nonnull align 1 dereferenceable(1) %7)
          to label %40 unwind label %41

40:                                               ; preds = %39
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %7) #4
  br label %43

41:                                               ; preds = %39
  %42 = landingpad { ptr, i32 }
          cleanup
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %7) #4
  br label %56

43:                                               ; preds = %22, %40, %25
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %44 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #4
  %.not = icmp ugt i64 %44, %indvars.iv.next
  br i1 %.not, label %.lr.ph17, label %.critedge, !llvm.loop !10

.critedge:                                        ; preds = %43, %2
  %45 = call noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  br i1 %45, label %50, label %46

46:                                               ; preds = %.critedge
  %47 = call noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80) %3)
  %48 = icmp eq i64 %47, 2
  %49 = select i1 %48, ptr @.str.1, ptr @.str
  br label %50

50:                                               ; preds = %46, %.critedge
  %51 = phi ptr [ @.str.1, %.critedge ], [ %49, %46 ]
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %8) #4
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %8) #4
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef nonnull %51, ptr noundef nonnull align 1 dereferenceable(1) %8)
          to label %52 unwind label %53

52:                                               ; preds = %50
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %8) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %8) #4
  br label %55

53:                                               ; preds = %50
  %54 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %8) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %8) #4
  br label %56

55:                                               ; preds = %18, %36, %52
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %3) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %3) #4
  ret void

56:                                               ; preds = %19, %23, %37, %41, %53
  %.pn12 = phi { ptr, i32 } [ %54, %53 ], [ %20, %19 ], [ %24, %23 ], [ %38, %37 ], [ %42, %41 ]
  call void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80) %3) #4
  call void @llvm.lifetime.end.p0(i64 80, ptr nonnull %3) #4
  resume { ptr, i32 } %.pn12
}

; 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 uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEEC2IS2_vEEv(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #2 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 #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt5stackIcSt5dequeIcSaIcEEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEPKcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

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

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5stackIcSt5dequeIcSaIcEEE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEE4pushEOc(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 1 dereferenceable(1)) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_ZNSt5stackIcSt5dequeIcSaIcEEED2Ev(ptr noundef nonnull align 8 dereferenceable(80)) unnamed_addr #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(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 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 #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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}
!10 = distinct !{!10, !9}


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