; LLVM IR from brpapa/algorithms :: solutions/spoj/ONP.ll (Z3rpnB5cxx11ii)

; 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::allocator" = type { i8 }

@_Z3expB5cxx11 = external dso_local global %"class.std::__cxx11::basic_string", align 8

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_Z10isOperatorc(i8 noundef signext) #0

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3rpnB5cxx11ii(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, i32 noundef %1, i32 noundef %2) #1 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca %"class.std::allocator", align 1
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca %"class.std::__cxx11::basic_string", align 8
  %14 = alloca %"class.std::__cxx11::basic_string", align 8
  %15 = alloca %"class.std::__cxx11::basic_string", align 8
  store ptr %0, ptr %4, align 8
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  %16 = load i32, ptr %5, align 4, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !5
  %18 = icmp eq i32 %16, %17
  br i1 %18, label %19, label %29

19:                                               ; preds = %3
  %20 = load i32, ptr %5, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %21)
  %23 = load i8, ptr %22, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 1, ptr %7) #4
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #4
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEmcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef 1, i8 noundef signext %23, ptr noundef nonnull align 1 dereferenceable(1) %7)
          to label %24 unwind label %25

24:                                               ; preds = %19
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #4
  br label %121

25:                                               ; preds = %19
  %26 = landingpad { ptr, i32 }
          cleanup
  %27 = extractvalue { ptr, i32 } %26, 0
  store ptr %27, ptr %8, align 8
  %28 = extractvalue { ptr, i32 } %26, 1
  store i32 %28, ptr %9, align 4
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %7) #4
  call void @llvm.lifetime.end.p0(i64 1, ptr %7) #4
  br label %122

29:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #4
  store i32 0, ptr %10, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #4
  %30 = load i32, ptr %5, align 4, !tbaa !5
  store i32 %30, ptr %11, align 4, !tbaa !5
  br label %31

31:                                               ; preds = %95, %29
  %32 = load i32, ptr %11, align 4, !tbaa !5
  %33 = load i32, ptr %6, align 4, !tbaa !5
  %34 = icmp sle i32 %32, %33
  br i1 %34, label %36, label %35

35:                                               ; preds = %31
  store i32 2, ptr %12, align 4
  br label %98

36:                                               ; preds = %31
  %37 = load i32, ptr %11, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %38)
  %40 = load i8, ptr %39, align 1, !tbaa !9
  %41 = sext i8 %40 to i32
  %42 = icmp eq i32 %41, 40
  br i1 %42, label %43, label %46

43:                                               ; preds = %36
  %44 = load i32, ptr %10, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr %10, align 4, !tbaa !5
  br label %46

46:                                               ; preds = %43, %36
  %47 = load i32, ptr %11, align 4, !tbaa !5
  %48 = sext i32 %47 to i64
  %49 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %48)
  %50 = load i8, ptr %49, align 1, !tbaa !9
  %51 = sext i8 %50 to i32
  %52 = icmp eq i32 %51, 41
  br i1 %52, label %53, label %56

53:                                               ; preds = %46
  %54 = load i32, ptr %10, align 4, !tbaa !5
  %55 = add nsw i32 %54, -1
  store i32 %55, ptr %10, align 4, !tbaa !5
  br label %56

56:                                               ; preds = %53, %46
  %57 = load i32, ptr %10, align 4, !tbaa !5
  %58 = icmp eq i32 %57, 0
  br i1 %58, label %59, label %94

59:                                               ; preds = %56
  %60 = load i32, ptr %11, align 4, !tbaa !5
  %61 = sext i32 %60 to i64
  %62 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %61)
  %63 = load i8, ptr %62, align 1, !tbaa !9
  %64 = call noundef zeroext i1 @_Z10isOperatorc(i8 noundef signext %63)
  br i1 %64, label %65, label %94

65:                                               ; preds = %59
  call void @llvm.lifetime.start.p0(i64 32, ptr %13) #4
  call void @llvm.lifetime.start.p0(i64 32, ptr %14) #4
  %66 = load i32, ptr %5, align 4, !tbaa !5
  %67 = load i32, ptr %11, align 4, !tbaa !5
  %68 = sub nsw i32 %67, 1
  call void @_Z3rpnB5cxx11ii(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %14, i32 noundef %66, i32 noundef %68)
  call void @llvm.lifetime.start.p0(i64 32, ptr %15) #4
  %69 = load i32, ptr %11, align 4, !tbaa !5
  %70 = add nsw i32 %69, 1
  %71 = load i32, ptr %6, align 4, !tbaa !5
  invoke void @_Z3rpnB5cxx11ii(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %15, i32 noundef %70, i32 noundef %71)
          to label %72 unwind label %80

72:                                               ; preds = %65
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %13, ptr noundef nonnull align 8 dereferenceable(32) %14, ptr noundef nonnull align 8 dereferenceable(32) %15)
          to label %73 unwind label %84

73:                                               ; preds = %72
  %74 = load i32, ptr %11, align 4, !tbaa !5
  %75 = sext i32 %74 to i64
  %76 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %75)
          to label %77 unwind label %88

77:                                               ; preds = %73
  %78 = load i8, ptr %76, align 1, !tbaa !9
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S5_(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr noundef nonnull align 8 dereferenceable(32) %13, i8 noundef signext %78)
          to label %79 unwind label %88

79:                                               ; preds = %77
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %15) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %15) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %14) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %13) #4
  store i32 1, ptr %12, align 4
  br label %98

80:                                               ; preds = %65
  %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
  br label %93

84:                                               ; preds = %72
  %85 = landingpad { ptr, i32 }
          cleanup
  %86 = extractvalue { ptr, i32 } %85, 0
  store ptr %86, ptr %8, align 8
  %87 = extractvalue { ptr, i32 } %85, 1
  store i32 %87, ptr %9, align 4
  br label %92

88:                                               ; preds = %77, %73
  %89 = landingpad { ptr, i32 }
          cleanup
  %90 = extractvalue { ptr, i32 } %89, 0
  store ptr %90, ptr %8, align 8
  %91 = extractvalue { ptr, i32 } %89, 1
  store i32 %91, ptr %9, align 4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %13) #4
  br label %92

92:                                               ; preds = %88, %84
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %15) #4
  br label %93

93:                                               ; preds = %92, %80
  call void @llvm.lifetime.end.p0(i64 32, ptr %15) #4
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %14) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %14) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  br label %122

94:                                               ; preds = %59, %56
  br label %95

95:                                               ; preds = %94
  %96 = load i32, ptr %11, align 4, !tbaa !5
  %97 = add nsw i32 %96, 1
  store i32 %97, ptr %11, align 4, !tbaa !5
  br label %31, !llvm.loop !10

98:                                               ; preds = %79, %35
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #4
  %99 = load i32, ptr %12, align 4
  switch i32 %99, label %120 [
    i32 2, label %100
  ]

100:                                              ; preds = %98
  %101 = load i32, ptr %5, align 4, !tbaa !5
  %102 = sext i32 %101 to i64
  %103 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %102)
  %104 = load i8, ptr %103, align 1, !tbaa !9
  %105 = sext i8 %104 to i32
  %106 = icmp eq i32 %105, 40
  br i1 %106, label %107, label %119

107:                                              ; preds = %100
  %108 = load i32, ptr %6, align 4, !tbaa !5
  %109 = sext i32 %108 to i64
  %110 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %109)
  %111 = load i8, ptr %110, align 1, !tbaa !9
  %112 = sext i8 %111 to i32
  %113 = icmp eq i32 %112, 41
  br i1 %113, label %114, label %119

114:                                              ; preds = %107
  %115 = load i32, ptr %5, align 4, !tbaa !5
  %116 = add nsw i32 %115, 1
  %117 = load i32, ptr %6, align 4, !tbaa !5
  %118 = sub nsw i32 %117, 1
  call void @_Z3rpnB5cxx11ii(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %0, i32 noundef %116, i32 noundef %118)
  store i32 1, ptr %12, align 4
  br label %120

119:                                              ; preds = %107, %100
  unreachable

120:                                              ; preds = %114, %98
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #4
  br label %121

121:                                              ; preds = %120, %24
  ret void

122:                                              ; preds = %93, %25
  %123 = load ptr, ptr %8, align 8
  %124 = load i32, ptr %9, align 4
  %125 = insertvalue { ptr, i32 } poison, ptr %123, 0
  %126 = insertvalue { ptr, i32 } %125, i32 %124, 1
  resume { ptr, i32 } %126
}

; 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) #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEmcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i8 noundef signext, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 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) #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S5_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext) #3

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

attributes #0 = { 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 #1 = { 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"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::__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::allocator" = type { i8 }

@_Z3expB5cxx11 = external dso_local global %"class.std::__cxx11::basic_string", align 8

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_Z10isOperatorc(i8 noundef signext) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3rpnB5cxx11ii(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #1 personality ptr @__gxx_personality_v0 {
  %4 = alloca %"class.std::allocator", align 1
  %5 = alloca %"class.std::__cxx11::basic_string", align 8
  %6 = alloca %"class.std::__cxx11::basic_string", align 8
  %7 = alloca %"class.std::__cxx11::basic_string", align 8
  %8 = icmp eq i32 %1, %2
  br i1 %8, label %tailrecurse._crit_edge, label %.preheader.preheader

.preheader.preheader:                             ; preds = %3
  %9 = sext i32 %1 to i64
  %10 = sext i32 %2 to i64
  br label %.preheader

.preheader:                                       ; preds = %.preheader.preheader, %.critedge
  %indvars.iv57 = phi i64 [ %10, %.preheader.preheader ], [ %indvars.iv.next58, %.critedge ]
  %indvars.iv = phi i64 [ %9, %.preheader.preheader ], [ %indvars.iv.next, %.critedge ]
  %.not44 = icmp sgt i64 %indvars.iv, %indvars.iv57
  br i1 %.not44, label %.critedge, label %.lr.ph

tailrecurse._crit_edge.loopexit:                  ; preds = %.critedge
  %11 = trunc nsw i64 %indvars.iv.next58 to i32
  br label %tailrecurse._crit_edge

tailrecurse._crit_edge:                           ; preds = %tailrecurse._crit_edge.loopexit, %3
  %.tr39.lcssa = phi i32 [ %1, %3 ], [ %11, %tailrecurse._crit_edge.loopexit ]
  %12 = sext i32 %.tr39.lcssa to i64
  %13 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %12)
  %14 = load i8, ptr %13, align 1, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %4) #5
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEmcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %0, i64 noundef 1, i8 noundef signext %14, ptr noundef nonnull align 1 dereferenceable(1) %4)
          to label %15 unwind label %16

15:                                               ; preds = %tailrecurse._crit_edge
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #5
  br label %58

16:                                               ; preds = %tailrecurse._crit_edge
  %17 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %4) #5
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %4) #5
  br label %59

.lr.ph:                                           ; preds = %.preheader, %50
  %indvars.iv54 = phi i64 [ %indvars.iv.next55, %50 ], [ %indvars.iv, %.preheader ]
  %.02545 = phi i32 [ %.2, %50 ], [ 0, %.preheader ]
  %18 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %indvars.iv54)
  %19 = load i8, ptr %18, align 1, !tbaa !5
  %20 = icmp eq i8 %19, 40
  %21 = zext i1 %20 to i32
  %spec.select = add nsw i32 %.02545, %21
  %22 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %indvars.iv54)
  %23 = load i8, ptr %22, align 1, !tbaa !5
  %24 = icmp eq i8 %23, 41
  %25 = sext i1 %24 to i32
  %.2 = add nsw i32 %spec.select, %25
  %26 = icmp eq i32 %.2, 0
  br i1 %26, label %27, label %50

27:                                               ; preds = %.lr.ph
  %28 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %indvars.iv54)
  %29 = load i8, ptr %28, align 1, !tbaa !5
  %30 = tail call noundef zeroext i1 @_Z10isOperatorc(i8 noundef signext %29)
  br i1 %30, label %31, label %50

31:                                               ; preds = %27
  %32 = trunc nsw i64 %indvars.iv to i32
  %33 = trunc nsw i64 %indvars.iv57 to i32
  %34 = trunc nsw i64 %indvars.iv54 to i32
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %5) #5
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %6) #5
  %35 = add nsw i32 %34, -1
  call void @_Z3rpnB5cxx11ii(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %6, i32 noundef %32, i32 noundef %35)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %7) #5
  %36 = add nsw i32 %34, 1
  invoke void @_Z3rpnB5cxx11ii(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %7, i32 noundef %36, i32 noundef %33)
          to label %37 unwind label %42

37:                                               ; preds = %31
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind nonnull writable sret(%"class.std::__cxx11::basic_string") align 8 %5, ptr noundef nonnull align 8 dereferenceable(32) %6, ptr noundef nonnull align 8 dereferenceable(32) %7)
          to label %38 unwind label %44

38:                                               ; preds = %37
  %39 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %indvars.iv54)
  %40 = load i8, ptr %39, align 1, !tbaa !5
  invoke void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S5_(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr noundef nonnull align 8 dereferenceable(32) %5, i8 noundef signext %40)
          to label %41 unwind label %46

41:                                               ; preds = %38
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %7) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %6) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #5
  br label %58

42:                                               ; preds = %31
  %43 = landingpad { ptr, i32 }
          cleanup
  br label %49

44:                                               ; preds = %37
  %45 = landingpad { ptr, i32 }
          cleanup
  br label %48

46:                                               ; preds = %38
  %47 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %5) #5
  br label %48

48:                                               ; preds = %46, %44
  %.pn = phi { ptr, i32 } [ %47, %46 ], [ %45, %44 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #5
  br label %49

49:                                               ; preds = %48, %42
  %.pn.pn = phi { ptr, i32 } [ %.pn, %48 ], [ %43, %42 ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %7) #5
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %6) #5
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %5) #5
  br label %59

50:                                               ; preds = %.lr.ph, %27
  %indvars.iv.next55 = add nsw i64 %indvars.iv54, 1
  %.not.not = icmp slt i64 %indvars.iv54, %indvars.iv57
  br i1 %.not.not, label %.lr.ph, label %.critedge, !llvm.loop !8

.critedge:                                        ; preds = %50, %.preheader
  %51 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %indvars.iv)
  %52 = load i8, ptr %51, align 1, !tbaa !5
  %53 = icmp eq i8 %52, 40
  tail call void @llvm.assume(i1 %53)
  %54 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z3expB5cxx11, i64 noundef %indvars.iv57)
  %55 = load i8, ptr %54, align 1, !tbaa !5
  %56 = icmp eq i8 %55, 41
  tail call void @llvm.assume(i1 %56)
  %indvars.iv.next = add nsw i64 %indvars.iv, 1
  %indvars.iv.next58 = add nsw i64 %indvars.iv57, -1
  %57 = icmp eq i64 %indvars.iv.next, %indvars.iv.next58
  br i1 %57, label %tailrecurse._crit_edge.loopexit, label %.preheader

58:                                               ; preds = %41, %15
  ret void

59:                                               ; preds = %49, %16
  %.pn37 = phi { ptr, i32 } [ %17, %16 ], [ %.pn.pn, %49 ]
  resume { ptr, i32 } %.pn37
}

; 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 #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEmcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i8 noundef signext, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #1 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) #2

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S5_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), i8 noundef signext) local_unnamed_addr #3

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local void @_ZStplIcSt11char_traitsIcESaIcEENSt7__cxx1112basic_stringIT_T0_T1_EEOS8_S9_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #3

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)
declare void @llvm.assume(i1 noundef) #4

attributes #0 = { 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 #1 = { 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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }
attributes #5 = { 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"}


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