; LLVM IR from Ayon-SSP/The-SDE-Prep :: 1]_Data Structures/2]_Linked List (22_insertingindoubleLL)

; 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 { ptr, ptr, i32 }

@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #1

declare i32 @printf(ptr noundef, ...) #2

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

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

; Function Attrs: nounwind uwtable
define dso_local void @insert(ptr noundef %0, i32 noundef %1) #3 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %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
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %8 = call noalias ptr @malloc(i64 noundef 24) #5
  store ptr %8, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %9, ptr %6, align 8, !tbaa !5
  %10 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.Node, ptr %11, i32 0, i32 2
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %12)
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = icmp eq ptr %14, null
  br i1 %15, label %16, label %22

16:                                               ; preds = %2
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %17, ptr %3, align 8, !tbaa !5
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.Node, ptr %18, i32 0, i32 1
  store ptr null, ptr %19, align 8, !tbaa !11
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.Node, ptr %20, i32 0, i32 0
  store ptr null, ptr %21, align 8, !tbaa !13
  br label %67

22:                                               ; preds = %2
  %23 = load i32, ptr %4, align 4, !tbaa !9
  %24 = icmp eq i32 %23, 0
  br i1 %24, label %25, label %35

25:                                               ; preds = %22
  %26 = load ptr, ptr %3, align 8, !tbaa !5
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.Node, ptr %27, i32 0, i32 1
  store ptr %26, ptr %28, align 8, !tbaa !11
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = load ptr, ptr %3, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.Node, ptr %30, i32 0, i32 0
  store ptr %29, ptr %31, align 8, !tbaa !13
  %32 = load ptr, ptr %5, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.Node, ptr %32, i32 0, i32 0
  store ptr null, ptr %33, align 8, !tbaa !13
  %34 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %34, ptr %3, align 8, !tbaa !5
  br label %66

35:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %36

36:                                               ; preds = %46, %35
  %37 = load i32, ptr %7, align 4, !tbaa !9
  %38 = load i32, ptr %4, align 4, !tbaa !9
  %39 = sub nsw i32 %38, 1
  %40 = icmp slt i32 %37, %39
  br i1 %40, label %42, label %41

41:                                               ; preds = %36
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  br label %49

42:                                               ; preds = %36
  %43 = load ptr, ptr %6, align 8, !tbaa !5
  %44 = getelementptr inbounds %struct.Node, ptr %43, i32 0, i32 1
  %45 = load ptr, ptr %44, align 8, !tbaa !11
  store ptr %45, ptr %6, align 8, !tbaa !5
  br label %46

46:                                               ; preds = %42
  %47 = load i32, ptr %7, align 4, !tbaa !9
  %48 = add nsw i32 %47, 1
  store i32 %48, ptr %7, align 4, !tbaa !9
  br label %36, !llvm.loop !14

49:                                               ; preds = %41
  %50 = load ptr, ptr %6, align 8, !tbaa !5
  %51 = getelementptr inbounds %struct.Node, ptr %50, i32 0, i32 1
  %52 = load ptr, ptr %51, align 8, !tbaa !11
  %53 = load ptr, ptr %5, align 8, !tbaa !5
  %54 = getelementptr inbounds %struct.Node, ptr %53, i32 0, i32 1
  store ptr %52, ptr %54, align 8, !tbaa !11
  %55 = load ptr, ptr %6, align 8, !tbaa !5
  %56 = load ptr, ptr %5, align 8, !tbaa !5
  %57 = getelementptr inbounds %struct.Node, ptr %56, i32 0, i32 0
  store ptr %55, ptr %57, align 8, !tbaa !13
  %58 = load ptr, ptr %5, align 8, !tbaa !5
  %59 = load ptr, ptr %6, align 8, !tbaa !5
  %60 = getelementptr inbounds %struct.Node, ptr %59, i32 0, i32 1
  %61 = load ptr, ptr %60, align 8, !tbaa !11
  %62 = getelementptr inbounds %struct.Node, ptr %61, i32 0, i32 0
  store ptr %58, ptr %62, align 8, !tbaa !13
  %63 = load ptr, ptr %5, align 8, !tbaa !5
  %64 = load ptr, ptr %6, align 8, !tbaa !5
  %65 = getelementptr inbounds %struct.Node, ptr %64, i32 0, i32 1
  store ptr %63, ptr %65, align 8, !tbaa !11
  br label %66

66:                                               ; preds = %49, %25
  br label %67

67:                                               ; preds = %66, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind 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 #2 = { "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 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 = { nounwind }
attributes #5 = { nounwind 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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 8}
!12 = !{!"Node", !6, i64 0, !6, i64 8, !10, i64 16}
!13 = !{!12, !6, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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"

@.str = external hidden unnamed_addr constant [13 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: nofree nounwind uwtable
define dso_local void @insert(ptr noundef %0, i32 noundef %1) local_unnamed_addr #2 {
  %3 = tail call noalias dereferenceable_or_null(24) ptr @malloc(i64 noundef 24) #4
  %4 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %5 = getelementptr inbounds i8, ptr %3, i64 16
  %6 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %5)
  %7 = icmp eq ptr %0, null
  br i1 %7, label %8, label %9

8:                                                ; preds = %2
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %3, i8 0, i64 16, i1 false)
  br label %38

9:                                                ; preds = %2
  %10 = icmp eq i32 %1, 0
  br i1 %10, label %15, label %.preheader

.preheader:                                       ; preds = %9
  %11 = icmp sgt i32 %1, 1
  br i1 %11, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %.preheader
  %12 = add nsw i32 %1, -2
  %13 = add nsw i32 %1, -1
  %xtraiter = and i32 %13, 7
  %14 = icmp ult i32 %12, 7
  br i1 %14, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i32 %13, -8
  br label %.lr.ph

15:                                               ; preds = %9
  %16 = getelementptr inbounds i8, ptr %3, i64 8
  store ptr %0, ptr %16, align 8, !tbaa !5
  store ptr %3, ptr %0, align 8, !tbaa !11
  store ptr null, ptr %3, align 8, !tbaa !11
  br label %38

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.lcssa.ph = phi ptr [ poison, %.lr.ph.preheader ], [ %37, %.lr.ph ]
  %.02427.unr = phi ptr [ %0, %.lr.ph.preheader ], [ %37, %.lr.ph ]
  %lcmp.mod.not = icmp eq i32 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil
  %.02427.epil = phi ptr [ %18, %.lr.ph.epil ], [ %.02427.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i32 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %17 = getelementptr inbounds i8, ptr %.02427.epil, i64 8
  %18 = load ptr, ptr %17, align 8, !tbaa !5
  %epil.iter.next = add i32 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i32 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.lr.ph.epil, !llvm.loop !12

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph.epil, %.preheader
  %.024.lcssa = phi ptr [ %0, %.preheader ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %18, %.lr.ph.epil ]
  %19 = getelementptr inbounds i8, ptr %.024.lcssa, i64 8
  %20 = load ptr, ptr %19, align 8, !tbaa !5
  %21 = getelementptr inbounds i8, ptr %3, i64 8
  store ptr %20, ptr %21, align 8, !tbaa !5
  store ptr %.024.lcssa, ptr %3, align 8, !tbaa !11
  store ptr %3, ptr %20, align 8, !tbaa !11
  store ptr %3, ptr %19, align 8, !tbaa !5
  br label %38

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %.02427 = phi ptr [ %0, %.lr.ph.preheader.new ], [ %37, %.lr.ph ]
  %niter = phi i32 [ 0, %.lr.ph.preheader.new ], [ %niter.next.7, %.lr.ph ]
  %22 = getelementptr inbounds i8, ptr %.02427, i64 8
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  %24 = getelementptr inbounds i8, ptr %23, i64 8
  %25 = load ptr, ptr %24, align 8, !tbaa !5
  %26 = getelementptr inbounds i8, ptr %25, i64 8
  %27 = load ptr, ptr %26, align 8, !tbaa !5
  %28 = getelementptr inbounds i8, ptr %27, i64 8
  %29 = load ptr, ptr %28, align 8, !tbaa !5
  %30 = getelementptr inbounds i8, ptr %29, i64 8
  %31 = load ptr, ptr %30, align 8, !tbaa !5
  %32 = getelementptr inbounds i8, ptr %31, i64 8
  %33 = load ptr, ptr %32, align 8, !tbaa !5
  %34 = getelementptr inbounds i8, ptr %33, i64 8
  %35 = load ptr, ptr %34, align 8, !tbaa !5
  %36 = getelementptr inbounds i8, ptr %35, i64 8
  %37 = load ptr, ptr %36, align 8, !tbaa !5
  %niter.next.7 = add i32 %niter, 8
  %niter.ncmp.7 = icmp eq i32 %niter.next.7, %unroll_iter
  br i1 %niter.ncmp.7, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !14

38:                                               ; preds = %15, %._crit_edge, %8
  ret void
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

attributes #0 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { nofree 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 = { nofree 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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { nounwind 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, !7, i64 8}
!6 = !{!"Node", !7, i64 0, !7, i64 8, !10, i64 16}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.unroll.disable"}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


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