; LLVM IR from VAR-solutions/Algorithms :: Graphs/Minimum Spanning Tree/C++/data-structures (LinkedGraph)

; 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.LinkedGraph = type { ptr }

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11LinkedGraph8addNodesEi(ptr noundef nonnull align 8 dereferenceable(8) %0, i32 noundef %1) #2 align 2 personality ptr @__gxx_personality_v0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %8 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #5
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %19, %2
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = load i32, ptr %4, align 4, !tbaa !9
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  br label %26

14:                                               ; preds = %9
  %15 = getelementptr inbounds %class.LinkedGraph, ptr %8, i32 0, i32 0
  %16 = load ptr, ptr %15, align 8, !tbaa !11
  %17 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 24) #6
  invoke void @_ZN10LinkedListIP15LinkedGraphEdgeEC1Ev(ptr noundef nonnull align 8 dereferenceable(20) %17)
          to label %18 unwind label %22

18:                                               ; preds = %14
  call void @_ZN9ArrayListIP10LinkedListIP15LinkedGraphEdgeEE3addES4_(ptr noundef nonnull align 8 dereferenceable(12) %16, ptr noundef %17)
  br label %19

19:                                               ; preds = %18
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %5, align 4, !tbaa !9
  br label %9, !llvm.loop !13

22:                                               ; preds = %14
  %23 = landingpad { ptr, i32 }
          cleanup
  %24 = extractvalue { ptr, i32 } %23, 0
  store ptr %24, ptr %6, align 8
  %25 = extractvalue { ptr, i32 } %23, 1
  store i32 %25, ptr %7, align 4
  call void @_ZdlPvm(ptr noundef %17, i64 noundef 24) #7
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #5
  br label %27

26:                                               ; preds = %13
  ret void

27:                                               ; preds = %22
  %28 = load ptr, ptr %6, align 8
  %29 = load i32, ptr %7, align 4
  %30 = insertvalue { ptr, i32 } poison, ptr %28, 0
  %31 = insertvalue { ptr, i32 } %30, i32 %29, 1
  resume { ptr, i32 } %31
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3

declare void @_ZN9ArrayListIP10LinkedListIP15LinkedGraphEdgeEE3addES4_(ptr noundef nonnull align 8 dereferenceable(12), ptr noundef) #4

declare void @_ZN10LinkedListIP15LinkedGraphEdgeEC1Ev(ptr noundef nonnull align 8 dereferenceable(20)) unnamed_addr #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3

attributes #0 = { nobuiltin allocsize(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 = { nobuiltin nounwind "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 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { "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 #5 = { nounwind }
attributes #6 = { builtin allocsize(0) }
attributes #7 = { builtin 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 = !{!12, !6, i64 0}
!12 = !{!"_ZTS11LinkedGraph", !6, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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"

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #0

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11LinkedGraph8addNodesEi(ptr nocapture noundef nonnull readonly align 8 dereferenceable(8) %0, i32 noundef %1) local_unnamed_addr #2 align 2 personality ptr @__gxx_personality_v0 {
  %3 = icmp sgt i32 %1, 0
  br i1 %3, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %6, %2
  ret void

.lr.ph:                                           ; preds = %2, %6
  %.05 = phi i32 [ %7, %6 ], [ 0, %2 ]
  %4 = load ptr, ptr %0, align 8, !tbaa !5
  %5 = tail call noalias noundef nonnull dereferenceable(24) ptr @_Znwm(i64 noundef 24) #4
  invoke void @_ZN10LinkedListIP15LinkedGraphEdgeEC1Ev(ptr noundef nonnull align 8 dereferenceable(20) %5)
          to label %6 unwind label %8

6:                                                ; preds = %.lr.ph
  tail call void @_ZN9ArrayListIP10LinkedListIP15LinkedGraphEdgeEE3addES4_(ptr noundef nonnull align 8 dereferenceable(12) %4, ptr noundef nonnull %5)
  %7 = add nuw nsw i32 %.05, 1
  %exitcond.not = icmp eq i32 %7, %1
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !10

8:                                                ; preds = %.lr.ph
  %9 = landingpad { ptr, i32 }
          cleanup
  tail call void @_ZdlPvm(ptr noundef nonnull %5, i64 noundef 24) #5
  resume { ptr, i32 } %9
}

declare void @_ZN9ArrayListIP10LinkedListIP15LinkedGraphEdgeEE3addES4_(ptr noundef nonnull align 8 dereferenceable(12), ptr noundef) local_unnamed_addr #3

declare void @_ZN10LinkedListIP15LinkedGraphEdgeEC1Ev(ptr noundef nonnull align 8 dereferenceable(20)) unnamed_addr #3

attributes #0 = { nobuiltin allocsize(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 = { nobuiltin nounwind "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 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 = { "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 = { builtin allocsize(0) }
attributes #5 = { builtin 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, !7, i64 0}
!6 = !{!"_ZTS11LinkedGraph", !7, i64 0}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


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