; LLVM IR from gzc/CLRS :: other/Karatsuba (main)

; 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 }

@.str = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z8multiplyRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES5_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef nonnull align 8 dereferenceable(32) %2) #0 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca %"class.std::__cxx11::basic_string", align 8
  %8 = alloca %"class.std::allocator", align 1
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca i32, align 4
  %16 = alloca i64, align 8
  %17 = alloca %"class.std::allocator", align 1
  store ptr %0, ptr %4, align 8
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 32, ptr %7) #3
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %18) #3
  %20 = load ptr, ptr %6, align 8, !tbaa !5
  %21 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %20) #3
  %22 = add i64 %19, %21
  call void @llvm.lifetime.start.p0(i64 1, ptr %8) #3
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %8) #3
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEmcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %7, i64 noundef %22, i8 noundef signext 48, ptr noundef nonnull align 1 dereferenceable(1) %8)
          to label %23 unwind label %32

23:                                               ; preds = %3
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %8) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %24 = load ptr, ptr %5, align 8, !tbaa !5
  %25 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %24) #3
  %26 = sub i64 %25, 1
  %27 = trunc i64 %26 to i32
  store i32 %27, ptr %11, align 4, !tbaa !9
  br label %28

28:                                               ; preds = %106, %23
  %29 = load i32, ptr %11, align 4, !tbaa !9
  %30 = icmp sle i32 0, %29
  br i1 %30, label %36, label %31

31:                                               ; preds = %28
  store i32 2, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  br label %114

32:                                               ; preds = %3
  %33 = landingpad { ptr, i32 }
          cleanup
  %34 = extractvalue { ptr, i32 } %33, 0
  store ptr %34, ptr %9, align 8
  %35 = extractvalue { ptr, i32 } %33, 1
  store i32 %35, ptr %10, align 4
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %8) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %8) #3
  br label %134

36:                                               ; preds = %28
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #3
  store i32 0, ptr %13, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #3
  %37 = load ptr, ptr %6, align 8, !tbaa !5
  %38 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %37) #3
  %39 = sub i64 %38, 1
  %40 = trunc i64 %39 to i32
  store i32 %40, ptr %14, align 4, !tbaa !9
  br label %41

41:                                               ; preds = %89, %36
  %42 = load i32, ptr %14, align 4, !tbaa !9
  %43 = icmp sle i32 0, %42
  br i1 %43, label %45, label %44

44:                                               ; preds = %41
  store i32 5, ptr %12, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #3
  br label %96

45:                                               ; preds = %41
  call void @llvm.lifetime.start.p0(i64 4, ptr %15) #3
  %46 = load i32, ptr %11, align 4, !tbaa !9
  %47 = load i32, ptr %14, align 4, !tbaa !9
  %48 = add nsw i32 %46, %47
  %49 = add nsw i32 %48, 1
  %50 = sext i32 %49 to i64
  %51 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %7, i64 noundef %50)
          to label %52 unwind label %92

52:                                               ; preds = %45
  %53 = load i8, ptr %51, align 1, !tbaa !11
  %54 = sext i8 %53 to i32
  %55 = sub nsw i32 %54, 48
  %56 = load ptr, ptr %5, align 8, !tbaa !5
  %57 = load i32, ptr %11, 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) %56, i64 noundef %58)
          to label %60 unwind label %92

60:                                               ; preds = %52
  %61 = load i8, ptr %59, align 1, !tbaa !11
  %62 = sext i8 %61 to i32
  %63 = sub nsw i32 %62, 48
  %64 = load ptr, ptr %6, align 8, !tbaa !5
  %65 = load i32, ptr %14, align 4, !tbaa !9
  %66 = sext i32 %65 to i64
  %67 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %64, i64 noundef %66)
          to label %68 unwind label %92

68:                                               ; preds = %60
  %69 = load i8, ptr %67, align 1, !tbaa !11
  %70 = sext i8 %69 to i32
  %71 = sub nsw i32 %70, 48
  %72 = mul nsw i32 %63, %71
  %73 = add nsw i32 %55, %72
  %74 = load i32, ptr %13, align 4, !tbaa !9
  %75 = add nsw i32 %73, %74
  store i32 %75, ptr %15, align 4, !tbaa !9
  %76 = load i32, ptr %15, align 4, !tbaa !9
  %77 = srem i32 %76, 2
  %78 = add nsw i32 %77, 48
  %79 = trunc i32 %78 to i8
  %80 = load i32, ptr %11, align 4, !tbaa !9
  %81 = load i32, ptr %14, align 4, !tbaa !9
  %82 = add nsw i32 %80, %81
  %83 = add nsw i32 %82, 1
  %84 = sext i32 %83 to i64
  %85 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %7, i64 noundef %84)
          to label %86 unwind label %92

86:                                               ; preds = %68
  store i8 %79, ptr %85, align 1, !tbaa !11
  %87 = load i32, ptr %15, align 4, !tbaa !9
  %88 = sdiv i32 %87, 2
  store i32 %88, ptr %13, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #3
  br label %89

89:                                               ; preds = %86
  %90 = load i32, ptr %14, align 4, !tbaa !9
  %91 = add nsw i32 %90, -1
  store i32 %91, ptr %14, align 4, !tbaa !9
  br label %41, !llvm.loop !12

92:                                               ; preds = %68, %60, %52, %45
  %93 = landingpad { ptr, i32 }
          cleanup
  %94 = extractvalue { ptr, i32 } %93, 0
  store ptr %94, ptr %9, align 8
  %95 = extractvalue { ptr, i32 } %93, 1
  store i32 %95, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %15) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #3
  br label %113

96:                                               ; preds = %44
  %97 = load i32, ptr %13, align 4, !tbaa !9
  %98 = load i32, ptr %11, align 4, !tbaa !9
  %99 = sext i32 %98 to i64
  %100 = invoke noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %7, i64 noundef %99)
          to label %101 unwind label %109

101:                                              ; preds = %96
  %102 = load i8, ptr %100, align 1, !tbaa !11
  %103 = sext i8 %102 to i32
  %104 = add nsw i32 %103, %97
  %105 = trunc i32 %104 to i8
  store i8 %105, ptr %100, align 1, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #3
  br label %106

106:                                              ; preds = %101
  %107 = load i32, ptr %11, align 4, !tbaa !9
  %108 = add nsw i32 %107, -1
  store i32 %108, ptr %11, align 4, !tbaa !9
  br label %28, !llvm.loop !14

109:                                              ; preds = %96
  %110 = landingpad { ptr, i32 }
          cleanup
  %111 = extractvalue { ptr, i32 } %110, 0
  store ptr %111, ptr %9, align 8
  %112 = extractvalue { ptr, i32 } %110, 1
  store i32 %112, ptr %10, align 4
  br label %113

113:                                              ; preds = %109, %92
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  br label %133

114:                                              ; preds = %31
  call void @llvm.lifetime.start.p0(i64 8, ptr %16) #3
  %115 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE17find_first_not_ofEPKcm(ptr noundef nonnull align 8 dereferenceable(32) %7, ptr noundef @.str, i64 noundef 0) #3
  store i64 %115, ptr %16, align 8, !tbaa !15
  %116 = load i64, ptr %16, align 8, !tbaa !15
  %117 = icmp ne i64 -1, %116
  br i1 %117, label %118, label %125

118:                                              ; preds = %114
  %119 = load i64, ptr %16, align 8, !tbaa !15
  invoke void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr noundef nonnull align 8 dereferenceable(32) %7, i64 noundef %119, i64 noundef -1)
          to label %120 unwind label %121

120:                                              ; preds = %118
  store i32 1, ptr %12, align 4
  br label %131

121:                                              ; preds = %118
  %122 = landingpad { ptr, i32 }
          cleanup
  %123 = extractvalue { ptr, i32 } %122, 0
  store ptr %123, ptr %9, align 8
  %124 = extractvalue { ptr, i32 } %122, 1
  store i32 %124, ptr %10, align 4
  br label %132

125:                                              ; preds = %114
  call void @llvm.lifetime.start.p0(i64 1, ptr %17) #3
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %17) #3
  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) %17)
          to label %126 unwind label %127

126:                                              ; preds = %125
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %17) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %17) #3
  store i32 1, ptr %12, align 4
  br label %131

127:                                              ; preds = %125
  %128 = landingpad { ptr, i32 }
          cleanup
  %129 = extractvalue { ptr, i32 } %128, 0
  store ptr %129, ptr %9, align 8
  %130 = extractvalue { ptr, i32 } %128, 1
  store i32 %130, ptr %10, align 4
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %17) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %17) #3
  br label %132

131:                                              ; preds = %126, %120
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #3
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #3
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #3
  ret void

132:                                              ; preds = %127, %121
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #3
  br label %133

133:                                              ; preds = %132, %113
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %7) #3
  br label %134

134:                                              ; preds = %133, %32
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #3
  br label %135

135:                                              ; preds = %134
  %136 = load ptr, ptr %9, align 8
  %137 = load i32, ptr %10, align 4
  %138 = insertvalue { ptr, i32 } poison, ptr %136, 0
  %139 = insertvalue { ptr, i32 } %138, i32 %137, 1
  resume { ptr, i32 } %139
}

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) #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_EEmcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i8 noundef signext, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: 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

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE17find_first_not_ofEPKcm(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, i64 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i64 noundef) #0 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 nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 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 = { 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}
!15 = !{!16, !16, i64 0}
!16 = !{!"long", !7, i64 0}


; 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 }

@.str = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z8multiplyRNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES5_(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr noundef nonnull align 8 dereferenceable(32) %1, ptr noundef nonnull align 8 dereferenceable(32) %2) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %4 = alloca %"class.std::__cxx11::basic_string", align 8
  %5 = alloca %"class.std::allocator", align 1
  %6 = alloca %"class.std::allocator", align 1
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #3
  %7 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #3
  %8 = tail call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %2) #3
  %9 = add i64 %8, %7
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %5) #3
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #3
  invoke void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEC2IS3_EEmcRKS3_(ptr noundef nonnull align 8 dereferenceable(32) %4, i64 noundef %9, i8 noundef signext 48, ptr noundef nonnull align 1 dereferenceable(1) %5)
          to label %10 unwind label %16

10:                                               ; preds = %3
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #3
  %11 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %1) #3
  %12 = trunc i64 %11 to i32
  %.02836 = add i32 %12, -1
  %13 = icmp sgt i32 %.02836, -1
  br i1 %13, label %.lr.ph39.preheader, label %._crit_edge40

.lr.ph39.preheader:                               ; preds = %10
  %14 = zext nneg i32 %.02836 to i64
  br label %.lr.ph39

._crit_edge40:                                    ; preds = %._crit_edge, %10
  %15 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE17find_first_not_ofEPKcm(ptr noundef nonnull align 8 dereferenceable(32) %4, ptr noundef nonnull @.str, i64 noundef 0) #3
  %.not = icmp eq i64 %15, -1
  br i1 %.not, label %53, label %50

16:                                               ; preds = %3
  %17 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %5) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %5) #3
  br label %59

.lr.ph39:                                         ; preds = %.lr.ph39.preheader, %._crit_edge
  %indvars.iv46 = phi i64 [ %14, %.lr.ph39.preheader ], [ %indvars.iv.next47, %._crit_edge ]
  %18 = call noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32) %2) #3
  %19 = trunc i64 %18 to i32
  %.02632 = add i32 %19, -1
  %20 = icmp sgt i32 %.02632, -1
  br i1 %20, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %.lr.ph39
  %21 = zext nneg i32 %.02632 to i64
  %22 = and i64 %18, 4294967295
  br label %28

._crit_edge:                                      ; preds = %28, %.lr.ph39
  %.027.lcssa = phi i32 [ 0, %.lr.ph39 ], [ %49, %28 ]
  %23 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %4, i64 noundef %indvars.iv46)
  %24 = load i8, ptr %23, align 1, !tbaa !5
  %25 = trunc i32 %.027.lcssa to i8
  %26 = add i8 %24, %25
  store i8 %26, ptr %23, align 1, !tbaa !5
  %indvars.iv.next47 = add nsw i64 %indvars.iv46, -1
  %27 = icmp sgt i64 %indvars.iv46, 0
  br i1 %27, label %.lr.ph39, label %._crit_edge40, !llvm.loop !8

28:                                               ; preds = %.lr.ph, %28
  %indvars.iv41 = phi i64 [ %22, %.lr.ph ], [ %indvars.iv.next42, %28 ]
  %indvars.iv = phi i64 [ %21, %.lr.ph ], [ %indvars.iv.next, %28 ]
  %.02733 = phi i32 [ 0, %.lr.ph ], [ %49, %28 ]
  %29 = add nuw i64 %indvars.iv41, %indvars.iv46
  %30 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %4, i64 noundef %29)
  %31 = load i8, ptr %30, align 1, !tbaa !5
  %32 = sext i8 %31 to i32
  %33 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %1, i64 noundef %indvars.iv46)
  %34 = load i8, ptr %33, align 1, !tbaa !5
  %35 = sext i8 %34 to i32
  %36 = add nsw i32 %35, -48
  %37 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %2, i64 noundef %indvars.iv)
  %38 = load i8, ptr %37, align 1, !tbaa !5
  %39 = sext i8 %38 to i32
  %40 = add nsw i32 %39, -48
  %41 = mul nsw i32 %40, %36
  %42 = add nsw i32 %.02733, -48
  %43 = add i32 %42, %32
  %44 = add i32 %43, %41
  %45 = srem i32 %44, 2
  %46 = trunc nsw i32 %45 to i8
  %47 = add nsw i8 %46, 48
  %48 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) %4, i64 noundef %29)
  store i8 %47, ptr %48, align 1, !tbaa !5
  %49 = sdiv i32 %44, 2
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %.not49 = icmp eq i64 %indvars.iv, 0
  %indvars.iv.next42 = add nsw i64 %indvars.iv41, -1
  br i1 %.not49, label %._crit_edge, label %28, !llvm.loop !10

50:                                               ; preds = %._crit_edge40
  invoke void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind writable sret(%"class.std::__cxx11::basic_string") align 8 %0, ptr noundef nonnull align 8 dereferenceable(32) %4, i64 noundef %15, i64 noundef -1)
          to label %57 unwind label %51

51:                                               ; preds = %50
  %52 = landingpad { ptr, i32 }
          cleanup
  br label %58

53:                                               ; preds = %._crit_edge40
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %6) #3
  call void @_ZNSaIcEC2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #3
  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 %54 unwind label %55

54:                                               ; preds = %53
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #3
  br label %57

55:                                               ; preds = %53
  %56 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt15__new_allocatorIcED2Ev(ptr noundef nonnull align 1 dereferenceable(1) %6) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %6) #3
  br label %58

57:                                               ; preds = %50, %54
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #3
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #3
  ret void

58:                                               ; preds = %55, %51
  %.pn = phi { ptr, i32 } [ %52, %51 ], [ %56, %55 ]
  call void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32) %4) #3
  br label %59

59:                                               ; preds = %58, %16
  %.pn.pn = phi { ptr, i32 } [ %.pn, %58 ], [ %17, %16 ]
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #3
  resume { ptr, i32 } %.pn.pn
}

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(32)) 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_EEmcRKS3_(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i8 noundef signext, ptr noundef nonnull align 1 dereferenceable(1)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

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

; Function Attrs: 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

; Function Attrs: mustprogress nounwind uwtable
declare noundef i64 @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE17find_first_not_ofEPKcm(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare void @_ZNKSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEE6substrEmm(ptr dead_on_unwind noalias writable sret(%"class.std::__cxx11::basic_string") align 8, ptr noundef nonnull align 8 dereferenceable(32), i64 noundef, i64 noundef) local_unnamed_addr #0 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 nounwind uwtable
declare void @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEED2Ev(ptr noundef nonnull align 8 dereferenceable(32)) unnamed_addr #2 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 = { 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: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass