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

@n = external dso_local global i32, align 4
@q = external dso_local global i32, align 4
@str = external dso_local global [100010 x [12 x i8]], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z5queryiPc(i32 noundef, ptr noundef) #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z4initv() #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z3lcaii(i32 noundef, i32 noundef) #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca [12 x i8], align 1
  store i32 0, ptr %1, align 4
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  store i32 1, ptr %4, align 4, !tbaa !5
  br label %7

7:                                                ; preds = %22, %0
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = load i32, ptr @n, align 4, !tbaa !5
  %10 = icmp slt i32 %8, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  br label %25

12:                                               ; preds = %7
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [100010 x [12 x i8]], ptr @str, i64 0, i64 %14
  %16 = getelementptr inbounds [12 x i8], ptr %15, i64 0, i64 0
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %2, ptr noundef %3, ptr noundef %16)
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z8add_edgeii(i32 noundef %18, i32 noundef %19)
  %20 = load i32, ptr %3, align 4, !tbaa !5
  %21 = load i32, ptr %2, align 4, !tbaa !5
  call void @_Z8add_edgeii(i32 noundef %20, i32 noundef %21)
  br label %22

22:                                               ; preds = %12
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = add nsw i32 %23, 1
  store i32 %24, ptr %4, align 4, !tbaa !5
  br label %7, !llvm.loop !9

25:                                               ; preds = %11
  call void @_Z4initv()
  %26 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @q)
  call void @llvm.lifetime.start.p0(i64 12, ptr %5) #6
  br label %27

27:                                               ; preds = %31, %25
  %28 = load i32, ptr @q, align 4, !tbaa !5
  %29 = add nsw i32 %28, -1
  store i32 %29, ptr @q, align 4, !tbaa !5
  %30 = icmp ne i32 %28, 0
  br i1 %30, label %31, label %49

31:                                               ; preds = %27
  %32 = getelementptr inbounds [12 x i8], ptr %5, i64 0, i64 0
  %33 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %2, ptr noundef %3, ptr noundef %32)
  %34 = load i32, ptr %2, align 4, !tbaa !5
  %35 = getelementptr inbounds [12 x i8], ptr %5, i64 0, i64 0
  %36 = call noundef i32 @_Z5queryiPc(i32 noundef %34, ptr noundef %35)
  %37 = load i32, ptr %3, align 4, !tbaa !5
  %38 = getelementptr inbounds [12 x i8], ptr %5, i64 0, i64 0
  %39 = call noundef i32 @_Z5queryiPc(i32 noundef %37, ptr noundef %38)
  %40 = add nsw i32 %36, %39
  %41 = load i32, ptr %2, align 4, !tbaa !5
  %42 = load i32, ptr %3, align 4, !tbaa !5
  %43 = call noundef i32 @_Z3lcaii(i32 noundef %41, i32 noundef %42)
  %44 = getelementptr inbounds [12 x i8], ptr %5, i64 0, i64 0
  %45 = call noundef i32 @_Z5queryiPc(i32 noundef %43, ptr noundef %44)
  %46 = mul nsw i32 %45, 2
  %47 = sub nsw i32 %40, %46
  %48 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %47)
  br label %27, !llvm.loop !11

49:                                               ; preds = %27
  call void @llvm.lifetime.end.p0(i64 12, ptr %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #6
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #4

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_Z8add_edgeii(i32 noundef, i32 noundef) #5

declare i32 @printf(ptr noundef, ...) #4

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #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 = { inlinehint 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 #6 = { 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 = distinct !{!11, !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"

@n = external dso_local global i32, align 4
@q = external dso_local global i32, align 4
@str = external dso_local global [100010 x [12 x i8]], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

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

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

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z5queryiPc(i32 noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z4initv() local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z3lcaii(i32 noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca [12 x i8], align 1
  %4 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n)
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  %5 = load i32, ptr @n, align 4, !tbaa !5
  %6 = icmp sgt i32 %5, 1
  br i1 %6, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %0
  call void @_Z4initv()
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @q)
  call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %3) #6
  %8 = load i32, ptr @q, align 4, !tbaa !5
  %9 = add nsw i32 %8, -1
  store i32 %9, ptr @q, align 4, !tbaa !5
  %.not4 = icmp eq i32 %8, 0
  br i1 %.not4, label %._crit_edge7, label %.lr.ph6

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 1, %0 ]
  %10 = getelementptr inbounds [100010 x [12 x i8]], ptr @str, i64 0, i64 %indvars.iv
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef nonnull %10)
  %12 = load i32, ptr %1, align 4, !tbaa !5
  %13 = load i32, ptr %2, align 4, !tbaa !5
  call void @_Z8add_edgeii(i32 noundef %12, i32 noundef %13)
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = load i32, ptr %1, align 4, !tbaa !5
  call void @_Z8add_edgeii(i32 noundef %14, i32 noundef %15)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %16 = load i32, ptr @n, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = icmp slt i64 %indvars.iv.next, %17
  br i1 %18, label %.lr.ph, label %._crit_edge, !llvm.loop !9

.lr.ph6:                                          ; preds = %._crit_edge, %.lr.ph6
  %19 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %1, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %20 = load i32, ptr %1, align 4, !tbaa !5
  %21 = call noundef i32 @_Z5queryiPc(i32 noundef %20, ptr noundef nonnull %3)
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = call noundef i32 @_Z5queryiPc(i32 noundef %22, ptr noundef nonnull %3)
  %24 = add nsw i32 %23, %21
  %25 = load i32, ptr %1, align 4, !tbaa !5
  %26 = load i32, ptr %2, align 4, !tbaa !5
  %27 = call noundef i32 @_Z3lcaii(i32 noundef %25, i32 noundef %26)
  %28 = call noundef i32 @_Z5queryiPc(i32 noundef %27, ptr noundef nonnull %3)
  %29 = shl i32 %28, 1
  %30 = sub i32 %24, %29
  %31 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %30)
  %32 = load i32, ptr @q, align 4, !tbaa !5
  %33 = add nsw i32 %32, -1
  store i32 %33, ptr @q, align 4, !tbaa !5
  %.not = icmp eq i32 %32, 0
  br i1 %.not, label %._crit_edge7, label %.lr.ph6, !llvm.loop !11

._crit_edge7:                                     ; preds = %.lr.ph6, %._crit_edge
  call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %3) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #6
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #4

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local void @_Z8add_edgeii(i32 noundef, i32 noundef) local_unnamed_addr #5

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #4

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #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 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 #5 = { inlinehint 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 #6 = { 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 = distinct !{!11, !10}


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