; LLVM IR from lzyrapx/Competitive-Programming :: HDUOJ (2044)

; 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"

@.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 [6 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca [55 x i64], align 16
  %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 440, ptr %2) #3
  %7 = getelementptr inbounds [55 x i64], ptr %2, i64 0, i64 1
  store i64 1, ptr %7, align 8, !tbaa !5
  %8 = getelementptr inbounds [55 x i64], ptr %2, i64 0, i64 2
  store i64 2, ptr %8, align 16, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 3, ptr %3, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %28, %0
  %10 = load i32, ptr %3, align 4, !tbaa !9
  %11 = icmp slt i32 %10, 55
  br i1 %11, label %13, label %12

12:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %31

13:                                               ; preds = %9
  %14 = load i32, ptr %3, align 4, !tbaa !9
  %15 = sub nsw i32 %14, 1
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [55 x i64], ptr %2, i64 0, i64 %16
  %18 = load i64, ptr %17, align 8, !tbaa !5
  %19 = load i32, ptr %3, align 4, !tbaa !9
  %20 = sub nsw i32 %19, 2
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [55 x i64], ptr %2, i64 0, i64 %21
  %23 = load i64, ptr %22, align 8, !tbaa !5
  %24 = add nsw i64 %18, %23
  %25 = load i32, ptr %3, align 4, !tbaa !9
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds [55 x i64], ptr %2, i64 0, i64 %26
  store i64 %24, ptr %27, align 8, !tbaa !5
  br label %28

28:                                               ; preds = %13
  %29 = load i32, ptr %3, align 4, !tbaa !9
  %30 = add nsw i32 %29, 1
  store i32 %30, ptr %3, align 4, !tbaa !9
  br label %9, !llvm.loop !11

31:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %32 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %4)
  br label %33

33:                                               ; preds = %37, %31
  %34 = load i32, ptr %4, align 4, !tbaa !9
  %35 = add nsw i32 %34, -1
  store i32 %35, ptr %4, align 4, !tbaa !9
  %36 = icmp ne i32 %34, 0
  br i1 %36, label %37, label %46

37:                                               ; preds = %33
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %38 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %5, ptr noundef %6)
  %39 = load i32, ptr %6, align 4, !tbaa !9
  %40 = load i32, ptr %5, align 4, !tbaa !9
  %41 = sub nsw i32 %39, %40
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds [55 x i64], ptr %2, i64 0, i64 %42
  %44 = load i64, ptr %43, align 8, !tbaa !5
  %45 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %44)
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %33, !llvm.loop !13

46:                                               ; preds = %33
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 440, 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

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

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

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

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 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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 [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = 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 [55 x i64], align 16
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 440, ptr nonnull %1) #3
  %5 = getelementptr inbounds i8, ptr %1, i64 8
  store i64 1, ptr %5, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %1, i64 16
  store i64 2, ptr %6, align 16, !tbaa !5
  br label %11

7:                                                ; preds = %11
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %9 = load i32, ptr %2, align 4, !tbaa !9
  %10 = add nsw i32 %9, -1
  store i32 %10, ptr %2, align 4, !tbaa !9
  %.not6 = icmp eq i32 %9, 0
  br i1 %.not6, label %._crit_edge, label %.lr.ph

11:                                               ; preds = %11, %0
  %12 = phi i64 [ 2, %0 ], [ %30, %11 ]
  %indvars.iv = phi i64 [ 3, %0 ], [ %indvars.iv.next.3, %11 ]
  %13 = add nsw i64 %indvars.iv, -2
  %14 = getelementptr inbounds [55 x i64], ptr %1, i64 0, i64 %13
  %15 = load i64, ptr %14, align 8, !tbaa !5
  %16 = add nsw i64 %15, %12
  %17 = getelementptr inbounds [55 x i64], ptr %1, i64 0, i64 %indvars.iv
  store i64 %16, ptr %17, align 8, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %18 = add nsw i64 %indvars.iv, -1
  %19 = getelementptr inbounds [55 x i64], ptr %1, i64 0, i64 %18
  %20 = load i64, ptr %19, align 8, !tbaa !5
  %21 = add nsw i64 %20, %16
  %22 = getelementptr inbounds [55 x i64], ptr %1, i64 0, i64 %indvars.iv.next
  store i64 %21, ptr %22, align 8, !tbaa !5
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %23 = getelementptr inbounds [55 x i64], ptr %1, i64 0, i64 %indvars.iv
  %24 = load i64, ptr %23, align 8, !tbaa !5
  %25 = add nsw i64 %24, %21
  %26 = getelementptr inbounds [55 x i64], ptr %1, i64 0, i64 %indvars.iv.next.1
  store i64 %25, ptr %26, align 8, !tbaa !5
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %27 = add nuw nsw i64 %indvars.iv, 1
  %28 = getelementptr inbounds [55 x i64], ptr %1, i64 0, i64 %27
  %29 = load i64, ptr %28, align 8, !tbaa !5
  %30 = add nsw i64 %29, %25
  %31 = getelementptr inbounds [55 x i64], ptr %1, i64 0, i64 %indvars.iv.next.2
  store i64 %30, ptr %31, align 8, !tbaa !5
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %exitcond.not.3 = icmp eq i64 %indvars.iv.next.3, 55
  br i1 %exitcond.not.3, label %7, label %11, !llvm.loop !11

.lr.ph:                                           ; preds = %7, %.lr.ph
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #3
  %32 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %3, ptr noundef nonnull %4)
  %33 = load i32, ptr %4, align 4, !tbaa !9
  %34 = load i32, ptr %3, align 4, !tbaa !9
  %35 = sub nsw i32 %33, %34
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds [55 x i64], ptr %1, i64 0, i64 %36
  %38 = load i64, ptr %37, align 8, !tbaa !5
  %39 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %38)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  %40 = load i32, ptr %2, align 4, !tbaa !9
  %41 = add nsw i32 %40, -1
  store i32 %41, ptr %2, align 4, !tbaa !9
  %.not = icmp eq i32 %40, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph, %7
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  call void @llvm.lifetime.end.p0(i64 440, 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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.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

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 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


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