; LLVM IR from TrainingByPackt/CPP-Data-Structures-and-Algorithm-Design-Principles :: Lesson7/Activity17/Activity 17.ll (Z16HasNegativeCycleSt6vectorIiSaIiEES_IP4EdgeSaIS3_EE)

; 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.__gnu_cxx::__normal_iterator.17" = type { ptr }
%struct.Edge = type { i32, i32, i32 }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z16HasNegativeCycleSt6vectorIiSaIiEES_IP4EdgeSaIS3_EE(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca %"class.__gnu_cxx::__normal_iterator.17", align 8
  %8 = alloca %"class.__gnu_cxx::__normal_iterator.17", align 8
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store ptr %1, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %14 = load ptr, ptr %6, align 8, !tbaa !5
  %15 = call ptr @_ZNSt6vectorIP4EdgeSaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %14) #3
  %16 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.17", ptr %7, i32 0, i32 0
  store ptr %15, ptr %16, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = call ptr @_ZNSt6vectorIP4EdgeSaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %17) #3
  %19 = getelementptr inbounds %"class.__gnu_cxx::__normal_iterator.17", ptr %8, i32 0, i32 0
  store ptr %18, ptr %19, align 8
  br label %20

20:                                               ; preds = %61, %2
  %21 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPP4EdgeSt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %7, ptr noundef nonnull align 8 dereferenceable(8) %8) #3
  br i1 %21, label %23, label %22

22:                                               ; preds = %20
  store i32 2, ptr %9, align 4
  br label %63

23:                                               ; preds = %20
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %24 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPP4EdgeSt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #3
  %25 = load ptr, ptr %24, align 8, !tbaa !5
  store ptr %25, ptr %10, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %26 = load ptr, ptr %10, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.Edge, ptr %26, i32 0, i32 0
  %28 = load i32, ptr %27, align 4, !tbaa !9
  store i32 %28, ptr %11, align 4, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %29 = load ptr, ptr %10, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.Edge, ptr %29, i32 0, i32 1
  %31 = load i32, ptr %30, align 4, !tbaa !13
  store i32 %31, ptr %12, align 4, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 4, ptr %13) #3
  %32 = load ptr, ptr %10, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.Edge, ptr %32, i32 0, i32 2
  %34 = load i32, ptr %33, align 4, !tbaa !14
  store i32 %34, ptr %13, align 4, !tbaa !12
  %35 = load i32, ptr %11, align 4, !tbaa !12
  %36 = sext i32 %35 to i64
  %37 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %36) #3
  %38 = load i32, ptr %37, align 4, !tbaa !12
  %39 = icmp eq i32 %38, 2147483647
  br i1 %39, label %40, label %41

40:                                               ; preds = %23
  store i32 3, ptr %9, align 4
  br label %55

41:                                               ; preds = %23
  %42 = load i32, ptr %11, align 4, !tbaa !12
  %43 = sext i32 %42 to i64
  %44 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %43) #3
  %45 = load i32, ptr %44, align 4, !tbaa !12
  %46 = load i32, ptr %13, align 4, !tbaa !12
  %47 = add nsw i32 %45, %46
  %48 = load i32, ptr %12, align 4, !tbaa !12
  %49 = sext i32 %48 to i64
  %50 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %49) #3
  %51 = load i32, ptr %50, align 4, !tbaa !12
  %52 = icmp slt i32 %47, %51
  br i1 %52, label %53, label %54

53:                                               ; preds = %41
  store i1 true, ptr %3, align 1
  store i32 1, ptr %9, align 4
  br label %55

54:                                               ; preds = %41
  store i32 0, ptr %9, align 4
  br label %55

55:                                               ; preds = %54, %53, %40
  call void @llvm.lifetime.end.p0(i64 4, ptr %13) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  %56 = load i32, ptr %9, align 4
  switch i32 %56, label %58 [
    i32 0, label %57
  ]

57:                                               ; preds = %55
  store i32 0, ptr %9, align 4
  br label %58

58:                                               ; preds = %57, %55
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  %59 = load i32, ptr %9, align 4
  switch i32 %59, label %63 [
    i32 0, label %60
    i32 3, label %61
  ]

60:                                               ; preds = %58
  br label %61

61:                                               ; preds = %60, %58
  %62 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPP4EdgeSt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %7) #3
  br label %20

63:                                               ; preds = %58, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %64 = load i32, ptr %9, align 4
  switch i32 %64, label %68 [
    i32 2, label %65
    i32 1, label %66
  ]

65:                                               ; preds = %63
  store i1 false, ptr %3, align 1
  br label %66

66:                                               ; preds = %65, %63
  %67 = load i1, ptr %3, align 1
  ret i1 %67

68:                                               ; preds = %63
  unreachable
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIP4EdgeSaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIP4EdgeSaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPP4EdgeSt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPP4EdgeSt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPP4EdgeSt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) #1 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #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, !11, i64 0}
!10 = !{!"_ZTS4Edge", !11, i64 0, !11, i64 4, !11, i64 8}
!11 = !{!"int", !7, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!10, !11, i64 4}
!14 = !{!10, !11, i64 8}


; 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.__gnu_cxx::__normal_iterator.17" = type { ptr }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z16HasNegativeCycleSt6vectorIiSaIiEES_IP4EdgeSaIS3_EE(ptr noundef %0, ptr noundef nonnull %1) local_unnamed_addr #1 {
  %3 = alloca %"class.__gnu_cxx::__normal_iterator.17", align 8
  %4 = alloca %"class.__gnu_cxx::__normal_iterator.17", align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #3
  %5 = tail call ptr @_ZNSt6vectorIP4EdgeSaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #3
  store ptr %5, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %6 = tail call ptr @_ZNSt6vectorIP4EdgeSaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #3
  store ptr %6, ptr %4, align 8
  %7 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPP4EdgeSt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %7, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %27
  %8 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPP4EdgeSt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %9 = load ptr, ptr %8, align 8, !tbaa !5
  %10 = load i32, ptr %9, align 4, !tbaa !9
  %11 = getelementptr inbounds i8, ptr %9, i64 4
  %12 = load i32, ptr %11, align 4, !tbaa !12
  %13 = getelementptr inbounds i8, ptr %9, i64 8
  %14 = load i32, ptr %13, align 4, !tbaa !13
  %15 = sext i32 %10 to i64
  %16 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %15) #3
  %17 = load i32, ptr %16, align 4, !tbaa !14
  %18 = icmp eq i32 %17, 2147483647
  br i1 %18, label %27, label %19

19:                                               ; preds = %.lr.ph
  %20 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %15) #3
  %21 = load i32, ptr %20, align 4, !tbaa !14
  %22 = add nsw i32 %21, %14
  %23 = sext i32 %12 to i64
  %24 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %23) #3
  %25 = load i32, ptr %24, align 4, !tbaa !14
  %26 = icmp slt i32 %22, %25
  br i1 %26, label %._crit_edge, label %27

27:                                               ; preds = %.lr.ph, %19
  %28 = call noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPP4EdgeSt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8) %3) #3
  %29 = call noundef zeroext i1 @_ZN9__gnu_cxxneIPP4EdgeSt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8) %3, ptr noundef nonnull align 8 dereferenceable(8) %4) #3
  br i1 %29, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %27, %19, %2
  %.lcssa = phi i1 [ false, %2 ], [ true, %19 ], [ false, %27 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #3
  ret i1 %.lcssa
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIP4EdgeSaIS1_EE5beginEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local ptr @_ZNSt6vectorIP4EdgeSaIS1_EE3endEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZN9__gnu_cxxneIPP4EdgeSt6vectorIS2_SaIS2_EEEEbRKNS_17__normal_iteratorIT_T0_EESC_(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZNK9__gnu_cxx17__normal_iteratorIPP4EdgeSt6vectorIS2_SaIS2_EEEdeEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN9__gnu_cxx17__normal_iteratorIPP4EdgeSt6vectorIS2_SaIS2_EEEppEv(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #1 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #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, !11, i64 0}
!10 = !{!"_ZTS4Edge", !11, i64 0, !11, i64 4, !11, i64 8}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 4}
!13 = !{!10, !11, i64 8}
!14 = !{!11, !11, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass