; LLVM IR from devparthgarg/Data-Structures-and-Algorithms :: 11. Linked List/35 Seagregate Even Odd Nodes of LL (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.Node = type { i32, ptr }

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_Z16segregateEvenOddRP4Node(ptr noundef nonnull align 8 dereferenceable(8)) #0

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

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5printP4Node(ptr noundef) #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca i32, align 4
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #6
  %11 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 16) #7
  invoke void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %11, i32 noundef 7)
          to label %12 unwind label %48

12:                                               ; preds = %0
  store ptr %11, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #6
  %13 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 16) #7
  invoke void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %13, i32 noundef 6)
          to label %14 unwind label %52

14:                                               ; preds = %12
  store ptr %13, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #6
  %15 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 16) #7
  invoke void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %15, i32 noundef 3)
          to label %16 unwind label %56

16:                                               ; preds = %14
  store ptr %15, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #6
  %17 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 16) #7
  invoke void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %17, i32 noundef 4)
          to label %18 unwind label %60

18:                                               ; preds = %16
  store ptr %17, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #6
  %19 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 16) #7
  invoke void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %19, i32 noundef 5)
          to label %20 unwind label %64

20:                                               ; preds = %18
  store ptr %19, ptr %8, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #6
  %21 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 16) #7
  invoke void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %21, i32 noundef 2)
          to label %22 unwind label %68

22:                                               ; preds = %20
  store ptr %21, ptr %9, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #6
  %23 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 16) #7
  invoke void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %23, i32 noundef 1)
          to label %24 unwind label %72

24:                                               ; preds = %22
  store ptr %23, ptr %10, align 8, !tbaa !5
  %25 = load ptr, ptr %5, align 8, !tbaa !5
  %26 = load ptr, ptr %2, align 8, !tbaa !5
  %27 = getelementptr inbounds %class.Node, ptr %26, i32 0, i32 1
  store ptr %25, ptr %27, align 8, !tbaa !9
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = getelementptr inbounds %class.Node, ptr %29, i32 0, i32 1
  store ptr %28, ptr %30, align 8, !tbaa !9
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  %32 = load ptr, ptr %6, align 8, !tbaa !5
  %33 = getelementptr inbounds %class.Node, ptr %32, i32 0, i32 1
  store ptr %31, ptr %33, align 8, !tbaa !9
  %34 = load ptr, ptr %8, align 8, !tbaa !5
  %35 = load ptr, ptr %7, align 8, !tbaa !5
  %36 = getelementptr inbounds %class.Node, ptr %35, i32 0, i32 1
  store ptr %34, ptr %36, align 8, !tbaa !9
  %37 = load ptr, ptr %9, align 8, !tbaa !5
  %38 = load ptr, ptr %8, align 8, !tbaa !5
  %39 = getelementptr inbounds %class.Node, ptr %38, i32 0, i32 1
  store ptr %37, ptr %39, align 8, !tbaa !9
  %40 = load ptr, ptr %10, align 8, !tbaa !5
  %41 = load ptr, ptr %9, align 8, !tbaa !5
  %42 = getelementptr inbounds %class.Node, ptr %41, i32 0, i32 1
  store ptr %40, ptr %42, align 8, !tbaa !9
  %43 = load ptr, ptr %10, align 8, !tbaa !5
  %44 = getelementptr inbounds %class.Node, ptr %43, i32 0, i32 1
  store ptr null, ptr %44, align 8, !tbaa !9
  %45 = load ptr, ptr %2, align 8, !tbaa !5
  call void @_Z5printP4Node(ptr noundef %45)
  %46 = call noundef ptr @_Z16segregateEvenOddRP4Node(ptr noundef nonnull align 8 dereferenceable(8) %2)
  store ptr %46, ptr %2, align 8, !tbaa !5
  %47 = load ptr, ptr %2, align 8, !tbaa !5
  call void @_Z5printP4Node(ptr noundef %47)
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  ret i32 0

48:                                               ; preds = %0
  %49 = landingpad { ptr, i32 }
          cleanup
  %50 = extractvalue { ptr, i32 } %49, 0
  store ptr %50, ptr %3, align 8
  %51 = extractvalue { ptr, i32 } %49, 1
  store i32 %51, ptr %4, align 4
  call void @_ZdlPvm(ptr noundef %11, i64 noundef 16) #8
  br label %81

52:                                               ; preds = %12
  %53 = landingpad { ptr, i32 }
          cleanup
  %54 = extractvalue { ptr, i32 } %53, 0
  store ptr %54, ptr %3, align 8
  %55 = extractvalue { ptr, i32 } %53, 1
  store i32 %55, ptr %4, align 4
  call void @_ZdlPvm(ptr noundef %13, i64 noundef 16) #8
  br label %80

56:                                               ; preds = %14
  %57 = landingpad { ptr, i32 }
          cleanup
  %58 = extractvalue { ptr, i32 } %57, 0
  store ptr %58, ptr %3, align 8
  %59 = extractvalue { ptr, i32 } %57, 1
  store i32 %59, ptr %4, align 4
  call void @_ZdlPvm(ptr noundef %15, i64 noundef 16) #8
  br label %79

60:                                               ; preds = %16
  %61 = landingpad { ptr, i32 }
          cleanup
  %62 = extractvalue { ptr, i32 } %61, 0
  store ptr %62, ptr %3, align 8
  %63 = extractvalue { ptr, i32 } %61, 1
  store i32 %63, ptr %4, align 4
  call void @_ZdlPvm(ptr noundef %17, i64 noundef 16) #8
  br label %78

64:                                               ; preds = %18
  %65 = landingpad { ptr, i32 }
          cleanup
  %66 = extractvalue { ptr, i32 } %65, 0
  store ptr %66, ptr %3, align 8
  %67 = extractvalue { ptr, i32 } %65, 1
  store i32 %67, ptr %4, align 4
  call void @_ZdlPvm(ptr noundef %19, i64 noundef 16) #8
  br label %77

68:                                               ; preds = %20
  %69 = landingpad { ptr, i32 }
          cleanup
  %70 = extractvalue { ptr, i32 } %69, 0
  store ptr %70, ptr %3, align 8
  %71 = extractvalue { ptr, i32 } %69, 1
  store i32 %71, ptr %4, align 4
  call void @_ZdlPvm(ptr noundef %21, i64 noundef 16) #8
  br label %76

72:                                               ; preds = %22
  %73 = landingpad { ptr, i32 }
          cleanup
  %74 = extractvalue { ptr, i32 } %73, 0
  store ptr %74, ptr %3, align 8
  %75 = extractvalue { ptr, i32 } %73, 1
  store i32 %75, ptr %4, align 4
  call void @_ZdlPvm(ptr noundef %23, i64 noundef 16) #8
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #6
  br label %76

76:                                               ; preds = %72, %68
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  br label %77

77:                                               ; preds = %76, %64
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #6
  br label %78

78:                                               ; preds = %77, %60
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #6
  br label %79

79:                                               ; preds = %78, %56
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #6
  br label %80

80:                                               ; preds = %79, %52
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #6
  br label %81

81:                                               ; preds = %80, %48
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #6
  br label %82

82:                                               ; preds = %81
  %83 = load ptr, ptr %3, align 8
  %84 = load i32, ptr %4, align 4
  %85 = insertvalue { ptr, i32 } poison, ptr %83, 0
  %86 = insertvalue { ptr, i32 } %85, i32 %84, 1
  resume { ptr, i32 } %86
}

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: nobuiltin nounwind
declare void @_ZdlPvm(ptr noundef, i64 noundef) #5

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #4 = { 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 #5 = { 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 #6 = { nounwind }
attributes #7 = { builtin allocsize(0) }
attributes #8 = { 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, !6, i64 8}
!10 = !{!"_ZTS4Node", !11, i64 0, !6, i64 8}
!11 = !{!"int", !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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef ptr @_Z16segregateEvenOddRP4Node(ptr noundef nonnull align 8 dereferenceable(8)) local_unnamed_addr #0

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5printP4Node(ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 personality ptr @__gxx_personality_v0 {
  %1 = alloca ptr, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #5
  %2 = tail call noalias noundef nonnull dereferenceable(16) ptr @_Znwm(i64 noundef 16) #6
  tail call void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %2, i32 noundef 7)
  store ptr %2, ptr %1, align 8, !tbaa !5
  %3 = tail call noalias noundef nonnull dereferenceable(16) ptr @_Znwm(i64 noundef 16) #6
  tail call void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %3, i32 noundef 6)
  %4 = tail call noalias noundef nonnull dereferenceable(16) ptr @_Znwm(i64 noundef 16) #6
  tail call void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %4, i32 noundef 3)
  %5 = tail call noalias noundef nonnull dereferenceable(16) ptr @_Znwm(i64 noundef 16) #6
  tail call void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %5, i32 noundef 4)
  %6 = tail call noalias noundef nonnull dereferenceable(16) ptr @_Znwm(i64 noundef 16) #6
  tail call void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %6, i32 noundef 5)
  %7 = tail call noalias noundef nonnull dereferenceable(16) ptr @_Znwm(i64 noundef 16) #6
  tail call void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %7, i32 noundef 2)
  %8 = tail call noalias noundef nonnull dereferenceable(16) ptr @_Znwm(i64 noundef 16) #6
  tail call void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16) %8, i32 noundef 1)
  %9 = getelementptr inbounds i8, ptr %2, i64 8
  store ptr %3, ptr %9, align 8, !tbaa !9
  %10 = getelementptr inbounds i8, ptr %3, i64 8
  store ptr %4, ptr %10, align 8, !tbaa !9
  %11 = getelementptr inbounds i8, ptr %4, i64 8
  store ptr %5, ptr %11, align 8, !tbaa !9
  %12 = getelementptr inbounds i8, ptr %5, i64 8
  store ptr %6, ptr %12, align 8, !tbaa !9
  %13 = getelementptr inbounds i8, ptr %6, i64 8
  store ptr %7, ptr %13, align 8, !tbaa !9
  %14 = getelementptr inbounds i8, ptr %7, i64 8
  store ptr %8, ptr %14, align 8, !tbaa !9
  %15 = getelementptr inbounds i8, ptr %8, i64 8
  store ptr null, ptr %15, align 8, !tbaa !9
  tail call void @_Z5printP4Node(ptr noundef nonnull %2)
  %16 = call noundef ptr @_Z16segregateEvenOddRP4Node(ptr noundef nonnull align 8 dereferenceable(8) %1)
  store ptr %16, ptr %1, align 8, !tbaa !5
  call void @_Z5printP4Node(ptr noundef %16)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #5
  ret i32 0
}

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #4

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN4NodeC2Ei(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { 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 #4 = { 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 #5 = { nounwind }
attributes #6 = { builtin allocsize(0) }

!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, !6, i64 8}
!10 = !{!"_ZTS4Node", !11, i64 0, !6, i64 8}
!11 = !{!"int", !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass