; LLVM IR from Thre4dripper/DSA-Programs :: 04. Circular Linked Lists (Insertion)

; 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"

%struct.Node = type { i32, ptr }

@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z8traverseP4Node(ptr noundef) #0

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

; Function Attrs: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) #2

; 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 @_Z13insertAtIndexiPP4NodeiPi(i32 noundef, ptr noundef, i32 noundef, ptr noundef) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 {
  %1 = alloca ptr, align 8
  %2 = alloca i32, align 4
  %3 = call i32 @system(ptr noundef @.str.3)
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #5
  %4 = call noalias noundef nonnull ptr @_Znwm(i64 noundef 16) #6
  store ptr %4, ptr %1, align 8, !tbaa !5
  %5 = load ptr, ptr %1, align 8, !tbaa !5
  %6 = load ptr, ptr %1, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.Node, ptr %6, i32 0, i32 1
  store ptr %5, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #5
  %8 = load ptr, ptr %1, align 8, !tbaa !5
  %9 = call noundef i32 @_Z8traverseP4Node(ptr noundef %8)
  store i32 %9, ptr %2, align 4, !tbaa !12
  call void @_Z13insertAtIndexiPP4NodeiPi(i32 noundef 10, ptr noundef %1, i32 noundef 0, ptr noundef %2)
  call void @_Z13insertAtIndexiPP4NodeiPi(i32 noundef 20, ptr noundef %1, i32 noundef 1, ptr noundef %2)
  call void @_Z13insertAtIndexiPP4NodeiPi(i32 noundef 30, ptr noundef %1, i32 noundef 0, ptr noundef %2)
  %10 = load ptr, ptr %1, align 8, !tbaa !5
  %11 = call noundef i32 @_Z8traverseP4Node(ptr noundef %10)
  store i32 %11, ptr %2, align 4, !tbaa !12
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #5
  ret i32 0
}

declare i32 @system(ptr noundef) #4

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 = { 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 #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 = { "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}
!12 = !{!11, !11, 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"

@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z8traverseP4Node(ptr noundef) 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: nobuiltin allocsize(0)
declare noundef nonnull ptr @_Znwm(i64 noundef) local_unnamed_addr #2

; 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 @_Z13insertAtIndexiPP4NodeiPi(i32 noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 {
  %1 = alloca ptr, align 8
  %2 = alloca i32, align 4
  %3 = tail call i32 @system(ptr noundef nonnull @.str.3)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #5
  %4 = tail call noalias noundef nonnull dereferenceable(16) ptr @_Znwm(i64 noundef 16) #6
  store ptr %4, ptr %1, align 8, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %4, i64 8
  store ptr %4, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %6 = tail call noundef i32 @_Z8traverseP4Node(ptr noundef nonnull %4)
  store i32 %6, ptr %2, align 4, !tbaa !12
  call void @_Z13insertAtIndexiPP4NodeiPi(i32 noundef 10, ptr noundef nonnull %1, i32 noundef 0, ptr noundef nonnull %2)
  call void @_Z13insertAtIndexiPP4NodeiPi(i32 noundef 20, ptr noundef nonnull %1, i32 noundef 1, ptr noundef nonnull %2)
  call void @_Z13insertAtIndexiPP4NodeiPi(i32 noundef 30, ptr noundef nonnull %1, i32 noundef 0, ptr noundef nonnull %2)
  %7 = load ptr, ptr %1, align 8, !tbaa !5
  %8 = call noundef i32 @_Z8traverseP4Node(ptr noundef %7)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #5
  ret i32 0
}

; Function Attrs: nofree
declare noundef i32 @system(ptr nocapture noundef readonly) local_unnamed_addr #4

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 = { 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 #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 = { nofree "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}
!12 = !{!11, !11, i64 0}


; Effective O3 passes: DSEPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,TailCallElimPass