; LLVM IR from sunkafei/xcpc-algorithm-templates :: 算法/数据结构 (Euler-Tour-Tree)

; 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"

@_ZN3ett3sumE = external dso_local global [310000 x i32], align 16
@node = external dso_local global [310000 x i32], align 16
@.str = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [6 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 nounwind uwtable
declare dso_local void @_ZN3ett4initEv() #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3ett4linkEii(i32 noundef, i32 noundef) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3ett3cutEii(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 i32, align 4
  %6 = alloca i8, align 1
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i64, align 8
  %10 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #6
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %3)
  call void @_ZN3ett4initEv()
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #6
  store i32 1, ptr %4, align 4, !tbaa !5
  br label %12

12:                                               ; preds = %22, %0
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = icmp sle i32 %13, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #6
  br label %25

17:                                               ; preds = %12
  %18 = call noundef i32 @_ZN3ett7newnodeEi(i32 noundef 1)
  %19 = load i32, ptr %4, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %20
  store i32 %18, ptr %21, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %17
  %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 %12, !llvm.loop !9

25:                                               ; preds = %16
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #6
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %26

26:                                               ; preds = %85, %25
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = load i32, ptr %3, align 4, !tbaa !5
  %29 = icmp slt i32 %27, %28
  br i1 %29, label %31, label %30

30:                                               ; preds = %26
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #6
  br label %88

31:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #6
  %32 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.2, ptr noundef %6, ptr noundef %7, ptr noundef %8)
  %33 = load i8, ptr %6, align 1, !tbaa !11
  %34 = sext i8 %33 to i32
  %35 = icmp eq i32 %34, 65
  br i1 %35, label %36, label %45

36:                                               ; preds = %31
  %37 = load i32, ptr %7, align 4, !tbaa !5
  %38 = sext i32 %37 to i64
  %39 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %38
  %40 = load i32, ptr %39, align 4, !tbaa !5
  %41 = load i32, ptr %8, align 4, !tbaa !5
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %42
  %44 = load i32, ptr %43, align 4, !tbaa !5
  call void @_ZN3ett4linkEii(i32 noundef %40, i32 noundef %44)
  br label %84

45:                                               ; preds = %31
  %46 = load i32, ptr %7, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %47
  %49 = load i32, ptr %48, align 4, !tbaa !5
  %50 = load i32, ptr %8, align 4, !tbaa !5
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %51
  %53 = load i32, ptr %52, align 4, !tbaa !5
  call void @_ZN3ett3cutEii(i32 noundef %49, i32 noundef %53)
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #6
  %54 = load i32, ptr %7, align 4, !tbaa !5
  %55 = sext i32 %54 to i64
  %56 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %55
  %57 = load i32, ptr %56, align 4, !tbaa !5
  %58 = call noundef i32 @_ZN3ett7gettreeEi(i32 noundef %57)
  %59 = sext i32 %58 to i64
  %60 = getelementptr inbounds [310000 x i32], ptr @_ZN3ett3sumE, i64 0, i64 %59
  %61 = load i32, ptr %60, align 4, !tbaa !5
  %62 = sext i32 %61 to i64
  store i64 %62, ptr %9, align 8, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #6
  %63 = load i32, ptr %8, align 4, !tbaa !5
  %64 = sext i32 %63 to i64
  %65 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %64
  %66 = load i32, ptr %65, align 4, !tbaa !5
  %67 = call noundef i32 @_ZN3ett7gettreeEi(i32 noundef %66)
  %68 = sext i32 %67 to i64
  %69 = getelementptr inbounds [310000 x i32], ptr @_ZN3ett3sumE, i64 0, i64 %68
  %70 = load i32, ptr %69, align 4, !tbaa !5
  %71 = sext i32 %70 to i64
  store i64 %71, ptr %10, align 8, !tbaa !12
  %72 = load i64, ptr %9, align 8, !tbaa !12
  %73 = load i64, ptr %10, align 8, !tbaa !12
  %74 = mul nsw i64 %72, %73
  %75 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i64 noundef %74)
  %76 = load i32, ptr %7, align 4, !tbaa !5
  %77 = sext i32 %76 to i64
  %78 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %77
  %79 = load i32, ptr %78, align 4, !tbaa !5
  %80 = load i32, ptr %8, align 4, !tbaa !5
  %81 = sext i32 %80 to i64
  %82 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %81
  %83 = load i32, ptr %82, align 4, !tbaa !5
  call void @_ZN3ett4linkEii(i32 noundef %79, i32 noundef %83)
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #6
  br label %84

84:                                               ; preds = %45, %36
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #6
  br label %85

85:                                               ; preds = %84
  %86 = load i32, ptr %5, align 4, !tbaa !5
  %87 = add nsw i32 %86, 1
  store i32 %87, ptr %5, align 4, !tbaa !5
  br label %26, !llvm.loop !14

88:                                               ; preds = %30
  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 uwtable
declare dso_local noundef i32 @_ZN3ett7newnodeEi(i32 noundef) #5

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_ZN3ett7gettreeEi(i32 noundef) #5

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

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = { "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 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 = !{!7, !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"long long", !7, i64 0}
!14 = distinct !{!14, !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"

@_ZN3ett3sumE = external dso_local local_unnamed_addr global [310000 x i32], align 16
@node = external dso_local local_unnamed_addr global [310000 x i32], align 16
@.str = external hidden unnamed_addr constant [6 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [6 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 nounwind uwtable
declare dso_local void @_ZN3ett4initEv() local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3ett4linkEii(i32 noundef, i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN3ett3cutEii(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 i8, align 1
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #6
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  call void @_ZN3ett4initEv()
  %7 = load i32, ptr %1, align 4, !tbaa !5
  %.not8 = icmp slt i32 %7, 1
  br i1 %.not8, label %.preheader, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph, %0
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = icmp sgt i32 %8, 0
  br i1 %9, label %.lr.ph11, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 1, %0 ]
  %10 = call noundef i32 @_ZN3ett7newnodeEi(i32 noundef 1)
  %11 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %indvars.iv
  store i32 %10, ptr %11, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %12 = load i32, ptr %1, 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 %.preheader, !llvm.loop !9

._crit_edge:                                      ; preds = %55, %.preheader
  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

.lr.ph11:                                         ; preds = %.preheader, %55
  %.0710 = phi i32 [ %56, %55 ], [ 0, %.preheader ]
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %3) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #6
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.2, ptr noundef nonnull %3, ptr noundef nonnull %4, ptr noundef nonnull %5)
  %15 = load i8, ptr %3, align 1, !tbaa !11
  %16 = icmp eq i8 %15, 65
  %17 = load i32, ptr %4, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %18
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %21 = load i32, ptr %5, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !5
  br i1 %16, label %25, label %26

25:                                               ; preds = %.lr.ph11
  call void @_ZN3ett4linkEii(i32 noundef %20, i32 noundef %24)
  br label %55

26:                                               ; preds = %.lr.ph11
  call void @_ZN3ett3cutEii(i32 noundef %20, i32 noundef %24)
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %28
  %30 = load i32, ptr %29, align 4, !tbaa !5
  %31 = call noundef i32 @_ZN3ett7gettreeEi(i32 noundef %30)
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [310000 x i32], ptr @_ZN3ett3sumE, i64 0, i64 %32
  %34 = load i32, ptr %33, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = load i32, ptr %5, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %37
  %39 = load i32, ptr %38, align 4, !tbaa !5
  %40 = call noundef i32 @_ZN3ett7gettreeEi(i32 noundef %39)
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [310000 x i32], ptr @_ZN3ett3sumE, i64 0, i64 %41
  %43 = load i32, ptr %42, align 4, !tbaa !5
  %44 = sext i32 %43 to i64
  %45 = mul nsw i64 %44, %35
  %46 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i64 noundef %45)
  %47 = load i32, ptr %4, align 4, !tbaa !5
  %48 = sext i32 %47 to i64
  %49 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %48
  %50 = load i32, ptr %49, align 4, !tbaa !5
  %51 = load i32, ptr %5, align 4, !tbaa !5
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds [310000 x i32], ptr @node, i64 0, i64 %52
  %54 = load i32, ptr %53, align 4, !tbaa !5
  call void @_ZN3ett4linkEii(i32 noundef %50, i32 noundef %54)
  br label %55

55:                                               ; preds = %26, %25
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #6
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #6
  %56 = add nuw nsw i32 %.0710, 1
  %57 = load i32, ptr %2, align 4, !tbaa !5
  %58 = icmp slt i32 %56, %57
  br i1 %58, label %.lr.ph11, label %._crit_edge, !llvm.loop !12
}

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

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_ZN3ett7newnodeEi(i32 noundef) local_unnamed_addr #5

; Function Attrs: inlinehint mustprogress uwtable
declare dso_local noundef i32 @_ZN3ett7gettreeEi(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 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 #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 = { 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 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 = !{!7, !7, i64 0}
!12 = distinct !{!12, !10}


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