; LLVM IR from lzyrapx/Competitive-Programming :: HDUOJ (2139)

; 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"

@s = external dso_local global [3000 x i64], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 1, ptr getelementptr inbounds ([3000 x i64], ptr @s, i64 0, i64 1), align 8, !tbaa !5
  store i64 3, ptr %4, align 8, !tbaa !5
  br label %5

5:                                                ; preds = %19, %0
  %6 = load i64, ptr %4, align 8, !tbaa !5
  %7 = icmp sle i64 %6, 3000
  br i1 %7, label %8, label %22

8:                                                ; preds = %5
  %9 = load i64, ptr %4, align 8, !tbaa !5
  %10 = sub nsw i64 %9, 2
  %11 = getelementptr inbounds [3000 x i64], ptr @s, i64 0, i64 %10
  %12 = load i64, ptr %11, align 8, !tbaa !5
  %13 = load i64, ptr %4, align 8, !tbaa !5
  %14 = load i64, ptr %4, align 8, !tbaa !5
  %15 = mul nsw i64 %13, %14
  %16 = add nsw i64 %12, %15
  %17 = load i64, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds [3000 x i64], ptr @s, i64 0, i64 %17
  store i64 %16, ptr %18, align 8, !tbaa !5
  br label %19

19:                                               ; preds = %8
  %20 = load i64, ptr %4, align 8, !tbaa !5
  %21 = add nsw i64 %20, 2
  store i64 %21, ptr %4, align 8, !tbaa !5
  br label %5, !llvm.loop !9

22:                                               ; preds = %5
  br label %23

23:                                               ; preds = %26, %22
  %24 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2)
  %25 = icmp ne i32 %24, -1
  br i1 %25, label %26, label %31

26:                                               ; preds = %23
  %27 = load i64, ptr %2, align 8, !tbaa !5
  %28 = getelementptr inbounds [3000 x i64], ptr @s, i64 0, i64 %27
  %29 = load i64, ptr %28, align 8, !tbaa !5
  %30 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i64 noundef %29)
  br label %23, !llvm.loop !11

31:                                               ; preds = %23
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  ret i32 0
}

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

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

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

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

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 }

!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 = !{!"long long", !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"

@s = external dso_local local_unnamed_addr global [3000 x i64], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  store i64 1, ptr getelementptr inbounds (i8, ptr @s, i64 8), align 8, !tbaa !5
  br label %3

.preheader:                                       ; preds = %3
  %2 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %.not7 = icmp eq i32 %2, -1
  br i1 %.not7, label %._crit_edge, label %.lr.ph

3:                                                ; preds = %17, %0
  %4 = phi i64 [ 1, %0 ], [ %20, %17 ]
  %.06 = phi i64 [ 3, %0 ], [ %22, %17 ]
  %5 = mul nuw nsw i64 %.06, %.06
  %6 = add nuw nsw i64 %4, %5
  %7 = getelementptr inbounds [3000 x i64], ptr @s, i64 0, i64 %.06
  store i64 %6, ptr %7, align 8, !tbaa !5
  %8 = add nuw nsw i64 %.06, 2
  %9 = mul nuw nsw i64 %8, %8
  %10 = add nuw nsw i64 %6, %9
  %11 = getelementptr inbounds [3000 x i64], ptr @s, i64 0, i64 %8
  store i64 %10, ptr %11, align 8, !tbaa !5
  %12 = add nuw nsw i64 %.06, 4
  %13 = mul nuw nsw i64 %12, %12
  %14 = add nuw nsw i64 %10, %13
  %15 = getelementptr inbounds [3000 x i64], ptr @s, i64 0, i64 %12
  store i64 %14, ptr %15, align 8, !tbaa !5
  %16 = icmp ult i64 %.06, 2995
  br i1 %16, label %17, label %.preheader, !llvm.loop !9

17:                                               ; preds = %3
  %18 = add nuw nsw i64 %.06, 6
  %19 = mul nuw nsw i64 %18, %18
  %20 = add nuw nsw i64 %14, %19
  %21 = getelementptr inbounds [3000 x i64], ptr @s, i64 0, i64 %18
  store i64 %20, ptr %21, align 8, !tbaa !5
  %22 = add nuw nsw i64 %.06, 8
  br label %3

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %23 = load i64, ptr %1, align 8, !tbaa !5
  %24 = getelementptr inbounds [3000 x i64], ptr @s, i64 0, i64 %23
  %25 = load i64, ptr %24, align 8, !tbaa !5
  %26 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i64 noundef %25)
  %27 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %.not = icmp eq i32 %27, -1
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #3
  ret i32 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: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

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

attributes #0 = { mustprogress nofree norecurse 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 = !{!"long long", !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: BDCEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass