; LLVM IR from Dev-XYS/Algorithms :: Persistent-Array (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"

@root = external dso_local global [100000 x ptr], align 16
@n = external dso_local global i32, align 4
@d = external dso_local global [100000 x i32], align 16
@cur = external dso_local global i32, align 4
@used = external dso_local global i32, align 4
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [18 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5buildRP4nodeii(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef, i32 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: 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 @_Z6modifyRP4nodeS0_iiii(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z5queryP4nodeiii(ptr noundef, i32 noundef, i32 noundef, i32 noundef) #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #2 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n)
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 1, ptr %6, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %18, %0
  %9 = load i32, ptr %6, align 4, !tbaa !5
  %10 = load i32, ptr @n, align 4, !tbaa !5
  %11 = icmp sle i32 %9, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %21

13:                                               ; preds = %8
  %14 = load i32, ptr %6, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [100000 x i32], ptr @d, i64 0, i64 %15
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %16)
  br label %18

18:                                               ; preds = %13
  %19 = load i32, ptr %6, align 4, !tbaa !5
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %6, align 4, !tbaa !5
  br label %8, !llvm.loop !9

21:                                               ; preds = %12
  %22 = load i32, ptr @cur, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [100000 x ptr], ptr @root, i64 0, i64 %23
  %25 = load i32, ptr @n, align 4, !tbaa !5
  call void @_Z5buildRP4nodeii(ptr noundef nonnull align 8 dereferenceable(8) %24, i32 noundef 1, i32 noundef %25)
  br label %26

26:                                               ; preds = %74, %21
  br label %27

27:                                               ; preds = %26
  %28 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  %29 = load i32, ptr %2, align 4, !tbaa !5
  %30 = icmp eq i32 %29, 1
  br i1 %30, label %31, label %46

31:                                               ; preds = %27
  %32 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %4, ptr noundef %5)
  %33 = load i32, ptr @used, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [100000 x ptr], ptr @root, i64 0, i64 %34
  %36 = load i32, ptr @cur, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds [100000 x ptr], ptr @root, i64 0, i64 %37
  %39 = load ptr, ptr %38, align 8, !tbaa !11
  %40 = load i32, ptr @n, align 4, !tbaa !5
  %41 = load i32, ptr %4, align 4, !tbaa !5
  %42 = load i32, ptr %5, align 4, !tbaa !5
  call void @_Z6modifyRP4nodeS0_iiii(ptr noundef nonnull align 8 dereferenceable(8) %35, ptr noundef %39, i32 noundef 1, i32 noundef %40, i32 noundef %41, i32 noundef %42)
  %43 = load i32, ptr @used, align 4, !tbaa !5
  store i32 %43, ptr @cur, align 4, !tbaa !5
  %44 = load i32, ptr @used, align 4, !tbaa !5
  %45 = add nsw i32 %44, 1
  store i32 %45, ptr @used, align 4, !tbaa !5
  br label %74

46:                                               ; preds = %27
  %47 = load i32, ptr %2, align 4, !tbaa !5
  %48 = icmp eq i32 %47, 2
  br i1 %48, label %49, label %59

49:                                               ; preds = %46
  %50 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %3, ptr noundef %4)
  %51 = load i32, ptr %3, align 4, !tbaa !5
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds [100000 x ptr], ptr @root, i64 0, i64 %52
  %54 = load ptr, ptr %53, align 8, !tbaa !11
  %55 = load i32, ptr @n, align 4, !tbaa !5
  %56 = load i32, ptr %4, align 4, !tbaa !5
  %57 = call noundef i32 @_Z5queryP4nodeiii(ptr noundef %54, i32 noundef 1, i32 noundef %55, i32 noundef %56)
  %58 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %57)
  br label %73

59:                                               ; preds = %46
  %60 = load i32, ptr %2, align 4, !tbaa !5
  %61 = icmp eq i32 %60, 3
  br i1 %61, label %62, label %65

62:                                               ; preds = %59
  %63 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  %64 = load i32, ptr %3, align 4, !tbaa !5
  store i32 %64, ptr @cur, align 4, !tbaa !5
  br label %72

65:                                               ; preds = %59
  %66 = load i32, ptr %2, align 4, !tbaa !5
  %67 = icmp eq i32 %66, 0
  br i1 %67, label %68, label %69

68:                                               ; preds = %65
  br label %75

69:                                               ; preds = %65
  %70 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %71

71:                                               ; preds = %69
  br label %72

72:                                               ; preds = %71, %62
  br label %73

73:                                               ; preds = %72, %49
  br label %74

74:                                               ; preds = %73, %31
  br label %26, !llvm.loop !13

75:                                               ; preds = %68
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #3

declare i32 @printf(ptr noundef, ...) #3

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 = { 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 #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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !7, i64 0}
!13 = distinct !{!13, !10}


; 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"

@root = external dso_local global [100000 x ptr], align 16
@n = external dso_local global i32, align 4
@d = external dso_local global [100000 x i32], align 16
@cur = external dso_local local_unnamed_addr global i32, align 4
@used = external dso_local local_unnamed_addr global i32, align 4
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [18 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5buildRP4nodeii(ptr noundef nonnull align 8 dereferenceable(8), i32 noundef, i32 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: 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 @_Z6modifyRP4nodeS0_iiii(ptr noundef nonnull align 8 dereferenceable(8), ptr noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z5queryP4nodeiii(ptr noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #4
  %5 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n)
  %6 = load i32, ptr @n, align 4, !tbaa !5
  %.not5 = icmp slt i32 %6, 1
  br i1 %.not5, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %0
  %.lcssa = phi i32 [ %6, %0 ], [ %12, %.lr.ph ]
  %7 = load i32, ptr @cur, align 4, !tbaa !5
  %8 = sext i32 %7 to i64
  %9 = getelementptr inbounds [100000 x ptr], ptr @root, i64 0, i64 %8
  tail call void @_Z5buildRP4nodeii(ptr noundef nonnull align 8 dereferenceable(8) %9, i32 noundef 1, i32 noundef %.lcssa)
  br label %14

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 1, %0 ]
  %10 = getelementptr inbounds [100000 x i32], ptr @d, i64 0, i64 %indvars.iv
  %11 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %10)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %12 = load i32, ptr @n, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %.not.not = icmp slt i64 %indvars.iv, %13
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !9

14:                                               ; preds = %.backedge, %._crit_edge
  %15 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %16 = load i32, ptr %1, align 4, !tbaa !5
  switch i32 %16, label %44 [
    i32 1, label %17
    i32 2, label %31
    i32 3, label %41
    i32 0, label %46
  ]

17:                                               ; preds = %14
  %18 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %3, ptr noundef nonnull %4)
  %19 = load i32, ptr @used, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [100000 x ptr], ptr @root, i64 0, i64 %20
  %22 = load i32, ptr @cur, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [100000 x ptr], ptr @root, i64 0, i64 %23
  %25 = load ptr, ptr %24, align 8, !tbaa !11
  %26 = load i32, ptr @n, align 4, !tbaa !5
  %27 = load i32, ptr %3, align 4, !tbaa !5
  %28 = load i32, ptr %4, align 4, !tbaa !5
  call void @_Z6modifyRP4nodeS0_iiii(ptr noundef nonnull align 8 dereferenceable(8) %21, ptr noundef %25, i32 noundef 1, i32 noundef %26, i32 noundef %27, i32 noundef %28)
  %29 = load i32, ptr @used, align 4, !tbaa !5
  store i32 %29, ptr @cur, align 4, !tbaa !5
  %30 = add nsw i32 %29, 1
  store i32 %30, ptr @used, align 4, !tbaa !5
  br label %.backedge

31:                                               ; preds = %14
  %32 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %33 = load i32, ptr %2, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [100000 x ptr], ptr @root, i64 0, i64 %34
  %36 = load ptr, ptr %35, align 8, !tbaa !11
  %37 = load i32, ptr @n, align 4, !tbaa !5
  %38 = load i32, ptr %3, align 4, !tbaa !5
  %39 = call noundef i32 @_Z5queryP4nodeiii(ptr noundef %36, i32 noundef 1, i32 noundef %37, i32 noundef %38)
  %40 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %39)
  br label %.backedge

.backedge:                                        ; preds = %31, %44, %41, %17
  br label %14, !llvm.loop !13

41:                                               ; preds = %14
  %42 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %43 = load i32, ptr %2, align 4, !tbaa !5
  store i32 %43, ptr @cur, align 4, !tbaa !5
  br label %.backedge

44:                                               ; preds = %14
  %45 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  br label %.backedge

46:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

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 = { 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 #3 = { 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 #4 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !7, i64 0}
!13 = distinct !{!13, !10}


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