; LLVM IR from TLE-MEC/Hack-CP-DSA :: Hackerrank/Caesar Cipher (solution)

; 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_istream" = type { ptr, i64, %"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_ostream" = type { ptr, %"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] }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@__const.main.alphabet1 = external hidden unnamed_addr constant [26 x i8], align 16
@__const.main.alphabet2 = external hidden unnamed_addr constant [26 x i8], align 16
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca %"class.std::__cxx11::basic_string", align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca %"class.std::__cxx11::basic_string", align 8
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i8, align 1
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  %16 = alloca i32, align 4
  %17 = alloca [26 x i8], align 16
  %18 = alloca [26 x i8], align 16
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #7
  %19 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %4)
  call void @llvm.lifetime.start.p0(i64 32, ptr %6) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #7
  %20 = 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) %6)
          to label %21 unwind label %80

21:                                               ; preds = %0
  %22 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %5)
          to label %23 unwind label %80

23:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #7
  %24 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %6) #7
  %25 = trunc i64 %24 to i32
  store i32 %25, ptr %9, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 32, ptr %10) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #7
  store i32 0, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #7
  store i32 0, ptr %12, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %13) #7
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #7
  store i32 0, ptr %14, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #7
  store i32 0, ptr %15, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %16) #7
  store i32 0, ptr %16, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 26, ptr %17) #7
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %17, ptr align 16 @__const.main.alphabet1, i64 26, i1 false)
  call void @llvm.lifetime.start.p0(i64 26, ptr %18) #7
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %18, ptr align 16 @__const.main.alphabet2, i64 26, i1 false)
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %26

26:                                               ; preds = %134, %23
  %27 = load i32, ptr %2, align 4, !tbaa !5
  %28 = load i32, ptr %9, align 4, !tbaa !5
  %29 = icmp slt i32 %27, %28
  br i1 %29, label %30, label %137

30:                                               ; preds = %26
  %31 = load i32, ptr %2, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %33 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %6, i64 noundef %32)
          to label %34 unwind label %84

34:                                               ; preds = %30
  %35 = load i8, ptr %33, align 1, !tbaa !9
  %36 = sext i8 %35 to i32
  store i32 %36, ptr %11, align 4, !tbaa !5
  %37 = load i32, ptr %11, align 4, !tbaa !5
  %38 = icmp sge i32 %37, 65
  br i1 %38, label %39, label %42

39:                                               ; preds = %34
  %40 = load i32, ptr %11, align 4, !tbaa !5
  %41 = icmp sle i32 %40, 90
  br i1 %41, label %48, label %42

42:                                               ; preds = %39, %34
  %43 = load i32, ptr %11, align 4, !tbaa !5
  %44 = icmp sge i32 %43, 97
  br i1 %44, label %45, label %133

45:                                               ; preds = %42
  %46 = load i32, ptr %11, align 4, !tbaa !5
  %47 = icmp sle i32 %46, 122
  br i1 %47, label %48, label %133

48:                                               ; preds = %45, %39
  %49 = load i32, ptr %11, align 4, !tbaa !5
  %50 = icmp sge i32 %49, 65
  br i1 %50, label %51, label %88

51:                                               ; preds = %48
  %52 = load i32, ptr %11, align 4, !tbaa !5
  %53 = icmp sle i32 %52, 90
  br i1 %53, label %54, label %88

54:                                               ; preds = %51
  %55 = load i32, ptr %11, align 4, !tbaa !5
  %56 = load i32, ptr %5, align 4, !tbaa !5
  %57 = add nsw i32 %55, %56
  %58 = icmp sgt i32 %57, 90
  br i1 %58, label %59, label %88

59:                                               ; preds = %54
  %60 = load i32, ptr %2, align 4, !tbaa !5
  %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) %6, i64 noundef %61)
          to label %63 unwind label %84

63:                                               ; preds = %59
  %64 = load i8, ptr %62, align 1, !tbaa !9
  %65 = sext i8 %64 to i32
  %66 = sub nsw i32 %65, 65
  %67 = call i32 @llvm.abs.i32(i32 %66, i1 true)
  store i32 %67, ptr %15, align 4, !tbaa !5
  %68 = load i32, ptr %15, align 4, !tbaa !5
  %69 = load i32, ptr %5, align 4, !tbaa !5
  %70 = add nsw i32 %68, %69
  %71 = srem i32 %70, 26
  store i32 %71, ptr %16, align 4, !tbaa !5
  %72 = load i32, ptr %16, align 4, !tbaa !5
  %73 = sext i32 %72 to i64
  %74 = getelementptr inbounds [26 x i8], ptr %18, i64 0, i64 %73
  %75 = load i8, ptr %74, align 1, !tbaa !9
  %76 = load i32, ptr %2, align 4, !tbaa !5
  %77 = sext i32 %76 to i64
  %78 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %6, i64 noundef %77)
          to label %79 unwind label %84

79:                                               ; preds = %63
  store i8 %75, ptr %78, align 1, !tbaa !9
  br label %132

80:                                               ; preds = %21, %0
  %81 = landingpad { ptr, i32 }
          cleanup
  %82 = extractvalue { ptr, i32 } %81, 0
  store ptr %82, ptr %7, align 8
  %83 = extractvalue { ptr, i32 } %81, 1
  store i32 %83, ptr %8, align 4
  br label %141

84:                                               ; preds = %137, %120, %103, %99, %63, %59, %30
  %85 = landingpad { ptr, i32 }
          cleanup
  %86 = extractvalue { ptr, i32 } %85, 0
  store ptr %86, ptr %7, align 8
  %87 = extractvalue { ptr, i32 } %85, 1
  store i32 %87, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 26, ptr %18) #7
  call void @llvm.lifetime.end.p0(i64 26, ptr %17) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %13) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr %10) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #7
  br label %141

88:                                               ; preds = %54, %51, %48
  %89 = load i32, ptr %11, align 4, !tbaa !5
  %90 = icmp sge i32 %89, 97
  br i1 %90, label %91, label %120

91:                                               ; preds = %88
  %92 = load i32, ptr %11, align 4, !tbaa !5
  %93 = icmp sle i32 %92, 122
  br i1 %93, label %94, label %120

94:                                               ; preds = %91
  %95 = load i32, ptr %11, align 4, !tbaa !5
  %96 = load i32, ptr %5, align 4, !tbaa !5
  %97 = add nsw i32 %95, %96
  %98 = icmp sgt i32 %97, 122
  br i1 %98, label %99, label %120

99:                                               ; preds = %94
  %100 = load i32, ptr %2, align 4, !tbaa !5
  %101 = sext i32 %100 to i64
  %102 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %6, i64 noundef %101)
          to label %103 unwind label %84

103:                                              ; preds = %99
  %104 = load i8, ptr %102, align 1, !tbaa !9
  %105 = sext i8 %104 to i32
  %106 = sub nsw i32 %105, 97
  %107 = call i32 @llvm.abs.i32(i32 %106, i1 true)
  store i32 %107, ptr %15, align 4, !tbaa !5
  %108 = load i32, ptr %15, align 4, !tbaa !5
  %109 = load i32, ptr %5, align 4, !tbaa !5
  %110 = add nsw i32 %108, %109
  %111 = srem i32 %110, 26
  store i32 %111, ptr %16, align 4, !tbaa !5
  %112 = load i32, ptr %16, align 4, !tbaa !5
  %113 = sext i32 %112 to i64
  %114 = getelementptr inbounds [26 x i8], ptr %17, i64 0, i64 %113
  %115 = load i8, ptr %114, align 1, !tbaa !9
  %116 = load i32, ptr %2, align 4, !tbaa !5
  %117 = sext i32 %116 to i64
  %118 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %6, i64 noundef %117)
          to label %119 unwind label %84

119:                                              ; preds = %103
  store i8 %115, ptr %118, align 1, !tbaa !9
  br label %131

120:                                              ; preds = %94, %91, %88
  %121 = load i32, ptr %11, align 4, !tbaa !5
  %122 = load i32, ptr %5, align 4, !tbaa !5
  %123 = add nsw i32 %121, %122
  store i32 %123, ptr %12, align 4, !tbaa !5
  %124 = load i32, ptr %12, align 4, !tbaa !5
  %125 = trunc i32 %124 to i8
  store i8 %125, ptr %13, align 1, !tbaa !9
  %126 = load i8, ptr %13, align 1, !tbaa !9
  %127 = load i32, ptr %2, align 4, !tbaa !5
  %128 = sext i32 %127 to i64
  %129 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %6, i64 noundef %128)
          to label %130 unwind label %84

130:                                              ; preds = %120
  store i8 %126, ptr %129, align 1, !tbaa !9
  br label %131

131:                                              ; preds = %130, %119
  br label %132

132:                                              ; preds = %131, %79
  br label %133

133:                                              ; preds = %132, %45, %42
  br label %134

134:                                              ; preds = %133
  %135 = load i32, ptr %2, align 4, !tbaa !5
  %136 = add nsw i32 %135, 1
  store i32 %136, ptr %2, align 4, !tbaa !5
  br label %26, !llvm.loop !10

137:                                              ; preds = %26
  %138 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) %6)
          to label %139 unwind label %84

139:                                              ; preds = %137
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.end.p0(i64 26, ptr %18) #7
  call void @llvm.lifetime.end.p0(i64 26, ptr %17) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %16) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #7
  call void @llvm.lifetime.end.p0(i64 1, ptr %13) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %10) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr %10) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #7
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr %6) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  %140 = load i32, ptr %1, align 4
  ret i32 %140

141:                                              ; preds = %84, %80
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %6) #7
  call void @llvm.lifetime.end.p0(i64 32, ptr %6) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #7
  br label %142

142:                                              ; preds = %141
  %143 = load ptr, ptr %7, align 8
  %144 = load i32, ptr %8, align 4
  %145 = insertvalue { ptr, i32 } poison, ptr %143, 0
  %146 = insertvalue { ptr, i32 } %145, i32 %144, 1
  resume { ptr, i32 } %146
}

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) #2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 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)) #2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) #3 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #4

; 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) #3 align 2

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.abs.i32(i32, i1 immarg) #5

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(32)) #6

; 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 void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #6 = { 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 #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 = !{!"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::basic_istream" = type { ptr, i64, %"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_ostream" = type { ptr, %"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] }

@_ZSt3cin = external global %"class.std::basic_istream", align 8
@__const.main.alphabet1 = external hidden unnamed_addr constant [26 x i8], align 16
@__const.main.alphabet2 = external hidden unnamed_addr constant [26 x i8], align 16
@_ZSt4cout = external global %"class.std::basic_ostream", align 8

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca %"class.std::__cxx11::basic_string", align 8
  %4 = alloca %"class.std::__cxx11::basic_string", align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  %5 = call noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %1)
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %3) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #6
  %6 = 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) %3)
          to label %7 unwind label %33

7:                                                ; preds = %0
  %8 = invoke noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16) @_ZSt3cin, ptr noundef nonnull align 4 dereferenceable(4) %2)
          to label %9 unwind label %33

9:                                                ; preds = %7
  %10 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32) %3) #6
  %11 = trunc i64 %10 to i32
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #6
  %12 = icmp sgt i32 %11, 0
  br i1 %12, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %9
  %wide.trip.count = and i64 %10, 2147483647
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %56
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %56 ]
  %13 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %indvars.iv)
  %14 = load i8, ptr %13, align 1, !tbaa !5
  %15 = sext i8 %14 to i32
  %16 = add i8 %14, -65
  %or.cond = icmp ult i8 %16, 26
  %17 = add i8 %14, -97
  %or.cond3 = icmp ult i8 %17, 26
  %or.cond39 = or i1 %or.cond, %or.cond3
  br i1 %or.cond39, label %18, label %56

18:                                               ; preds = %.lr.ph
  %.pre.pre = load i32, ptr %2, align 4, !tbaa !8
  %19 = add nsw i32 %.pre.pre, %15
  %20 = icmp sgt i32 %19, 90
  %or.cond43 = select i1 %or.cond, i1 %20, i1 false
  br i1 %or.cond43, label %21, label %37

21:                                               ; preds = %18
  %22 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %indvars.iv)
  %23 = load i8, ptr %22, align 1, !tbaa !5
  %24 = sext i8 %23 to i32
  %25 = add nsw i32 %24, -65
  %26 = call i32 @llvm.abs.i32(i32 %25, i1 true)
  %27 = load i32, ptr %2, align 4, !tbaa !8
  %28 = add nsw i32 %26, %27
  %29 = srem i32 %28, 26
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [26 x i8], ptr @__const.main.alphabet2, i64 0, i64 %30
  %32 = load i8, ptr %31, align 1, !tbaa !5
  br label %.sink.split

33:                                               ; preds = %7, %0
  %34 = landingpad { ptr, i32 }
          cleanup
  br label %59

35:                                               ; preds = %._crit_edge
  %36 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #6
  br label %59

37:                                               ; preds = %18
  %38 = add nsw i32 %.pre.pre, %15
  %39 = icmp sgt i32 %38, 122
  %or.cond45 = select i1 %or.cond3, i1 %39, i1 false
  br i1 %or.cond45, label %40, label %52

40:                                               ; preds = %37
  %41 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %indvars.iv)
  %42 = load i8, ptr %41, align 1, !tbaa !5
  %43 = sext i8 %42 to i32
  %44 = add nsw i32 %43, -97
  %45 = call i32 @llvm.abs.i32(i32 %44, i1 true)
  %46 = load i32, ptr %2, align 4, !tbaa !8
  %47 = add nsw i32 %45, %46
  %48 = srem i32 %47, 26
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds [26 x i8], ptr @__const.main.alphabet1, i64 0, i64 %49
  %51 = load i8, ptr %50, align 1, !tbaa !5
  br label %.sink.split

52:                                               ; preds = %37
  %53 = trunc i32 %.pre.pre to i8
  %54 = add i8 %14, %53
  br label %.sink.split

.sink.split:                                      ; preds = %21, %52, %40
  %.sink = phi i8 [ %51, %40 ], [ %54, %52 ], [ %32, %21 ]
  %55 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %3, i64 noundef %indvars.iv)
  store i8 %.sink, ptr %55, align 1, !tbaa !5
  br label %56

56:                                               ; preds = %.sink.split, %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !10

._crit_edge:                                      ; preds = %56, %9
  %57 = invoke noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8) @_ZSt4cout, ptr noundef nonnull align 8 dereferenceable(32) %3)
          to label %58 unwind label %35

58:                                               ; preds = %._crit_edge
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #6
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0

59:                                               ; preds = %35, %33
  %.pn = phi { ptr, i32 } [ %36, %35 ], [ %34, %33 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %3) #6
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  resume { ptr, i32 } %.pn
}

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

declare noundef nonnull align 8 dereferenceable(16) ptr @_ZNSirsERi(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 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 #2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6lengthEv(ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #3 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 #3 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.abs.i32(i32, i1 immarg) #4

; Function Attrs: inlinehint mustprogress uwtable
declare noundef nonnull align 8 dereferenceable(8) ptr @_ZStlsIcSt11char_traitsIcESaIcEERSt13basic_ostreamIT_T0_ES7_RKNSt7__cxx1112basic_stringIS4_S5_T1_EE(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(32)) local_unnamed_addr #5

; 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 void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #3 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 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 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #5 = { 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 #6 = { 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 = !{!9, !9, i64 0}
!9 = !{!"int", !6, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


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