; LLVM IR from lzyrapx/Competitive-Programming :: HDUOJ (1799)

; 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"

@arr = external dso_local global [2005 x [2005 x i32]], align 16
@.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

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

8:                                                ; preds = %56, %0
  %9 = load i32, ptr %3, align 4, !tbaa !5
  %10 = icmp sle i32 %9, 2002
  br i1 %10, label %11, label %59

11:                                               ; preds = %8
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %13
  %15 = load i32, ptr %3, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [2005 x i32], ptr %14, i64 0, i64 %16
  store i32 1, ptr %17, align 4, !tbaa !5
  %18 = load i32, ptr %3, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %19
  %21 = getelementptr inbounds [2005 x i32], ptr %20, i64 0, i64 0
  store i32 0, ptr %21, align 4, !tbaa !5
  store i32 1, ptr %4, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %52, %11
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = load i32, ptr %3, align 4, !tbaa !5
  %25 = icmp slt i32 %23, %24
  br i1 %25, label %26, label %55

26:                                               ; preds = %22
  %27 = load i32, ptr %3, align 4, !tbaa !5
  %28 = sub nsw i32 %27, 1
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %29
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [2005 x i32], ptr %30, i64 0, i64 %32
  %34 = load i32, ptr %33, align 4, !tbaa !5
  %35 = load i32, ptr %3, align 4, !tbaa !5
  %36 = sub nsw i32 %35, 1
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %37
  %39 = load i32, ptr %4, align 4, !tbaa !5
  %40 = sub nsw i32 %39, 1
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [2005 x i32], ptr %38, i64 0, i64 %41
  %43 = load i32, ptr %42, align 4, !tbaa !5
  %44 = add nsw i32 %34, %43
  %45 = srem i32 %44, 1007
  %46 = load i32, ptr %3, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %47
  %49 = load i32, ptr %4, align 4, !tbaa !5
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds [2005 x i32], ptr %48, i64 0, i64 %50
  store i32 %45, ptr %51, align 4, !tbaa !5
  br label %52

52:                                               ; preds = %26
  %53 = load i32, ptr %4, align 4, !tbaa !5
  %54 = add nsw i32 %53, 1
  store i32 %54, ptr %4, align 4, !tbaa !5
  br label %22, !llvm.loop !9

55:                                               ; preds = %22
  br label %56

56:                                               ; preds = %55
  %57 = load i32, ptr %3, align 4, !tbaa !5
  %58 = add nsw i32 %57, 1
  store i32 %58, ptr %3, align 4, !tbaa !5
  br label %8, !llvm.loop !11

59:                                               ; preds = %8
  br label %60

60:                                               ; preds = %64, %59
  %61 = load i32, ptr %2, align 4, !tbaa !5
  %62 = add nsw i32 %61, -1
  store i32 %62, ptr %2, align 4, !tbaa !5
  %63 = icmp ne i32 %61, 0
  br i1 %63, label %64, label %76

64:                                               ; preds = %60
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %65 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %6, ptr noundef %5)
  %66 = load i32, ptr %5, align 4, !tbaa !5
  %67 = add nsw i32 %66, 1
  %68 = sext i32 %67 to i64
  %69 = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %68
  %70 = load i32, ptr %6, align 4, !tbaa !5
  %71 = add nsw i32 %70, 1
  %72 = sext i32 %71 to i64
  %73 = getelementptr inbounds [2005 x i32], ptr %69, i64 0, i64 %72
  %74 = load i32, ptr %73, align 4, !tbaa !5
  %75 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %74)
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %60, !llvm.loop !12

76:                                               ; preds = %60
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 4, 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 = !{!"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}
!12 = distinct !{!12, !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"

@arr = external dso_local local_unnamed_addr global [2005 x [2005 x i32]], align 16
@.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

; Function Attrs: mustprogress nofree norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  br label %7

.preheader:                                       ; preds = %._crit_edge
  %5 = load i32, ptr %1, align 4, !tbaa !5
  %6 = add nsw i32 %5, -1
  store i32 %6, ptr %1, align 4, !tbaa !5
  %.not17 = icmp eq i32 %5, 0
  br i1 %.not17, label %._crit_edge19, label %.lr.ph18

7:                                                ; preds = %0, %._crit_edge
  %indvar = phi i64 [ 0, %0 ], [ %indvar.next, %._crit_edge ]
  %indvars.iv21 = phi i64 [ 1, %0 ], [ %indvars.iv.next22, %._crit_edge ]
  %8 = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %indvars.iv21
  %9 = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %indvars.iv21, i64 %indvars.iv21
  store i32 1, ptr %9, align 4, !tbaa !5
  store i32 0, ptr %8, align 4, !tbaa !5
  %10 = icmp ugt i64 %indvars.iv21, 1
  br i1 %10, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %7
  %11 = add nsw i64 %indvars.iv21, -1
  %.phi.trans.insert = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %11, i64 0
  %.pre = load i32, ptr %.phi.trans.insert, align 4, !tbaa !5
  %min.iters.check = icmp ult i64 %indvar, 8
  br i1 %min.iters.check, label %scalar.ph.preheader, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph
  %n.vec = and i64 %indvar, -8
  %ind.end = or disjoint i64 %n.vec, 1
  %vector.recur.init = insertelement <4 x i32> poison, i32 %.pre, i64 3
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vector.recur = phi <4 x i32> [ %vector.recur.init, %vector.ph ], [ %wide.load25, %vector.body ]
  %offset.idx = or disjoint i64 %index, 1
  %12 = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %11, i64 %offset.idx
  %13 = getelementptr inbounds i8, ptr %12, i64 16
  %wide.load = load <4 x i32>, ptr %12, align 4, !tbaa !5
  %wide.load25 = load <4 x i32>, ptr %13, align 4, !tbaa !5
  %14 = shufflevector <4 x i32> %vector.recur, <4 x i32> %wide.load, <4 x i32> <i32 3, i32 4, i32 5, i32 6>
  %15 = shufflevector <4 x i32> %wide.load, <4 x i32> %wide.load25, <4 x i32> <i32 3, i32 4, i32 5, i32 6>
  %16 = add nsw <4 x i32> %14, %wide.load
  %17 = add nsw <4 x i32> %15, %wide.load25
  %18 = srem <4 x i32> %16, <i32 1007, i32 1007, i32 1007, i32 1007>
  %19 = srem <4 x i32> %17, <i32 1007, i32 1007, i32 1007, i32 1007>
  %20 = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %indvars.iv21, i64 %offset.idx
  %21 = getelementptr inbounds i8, ptr %20, i64 16
  store <4 x i32> %18, ptr %20, align 4, !tbaa !5
  store <4 x i32> %19, ptr %21, align 4, !tbaa !5
  %index.next = add nuw i64 %index, 8
  %22 = icmp eq i64 %index.next, %n.vec
  br i1 %22, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %vector.recur.extract = extractelement <4 x i32> %wide.load25, i64 3
  %cmp.n = icmp eq i64 %indvar, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %scalar.ph.preheader

scalar.ph.preheader:                              ; preds = %middle.block, %.lr.ph
  %.ph = phi i32 [ %.pre, %.lr.ph ], [ %vector.recur.extract, %middle.block ]
  %indvars.iv.ph = phi i64 [ 1, %.lr.ph ], [ %ind.end, %middle.block ]
  br label %scalar.ph

scalar.ph:                                        ; preds = %scalar.ph.preheader, %scalar.ph
  %23 = phi i32 [ %25, %scalar.ph ], [ %.ph, %scalar.ph.preheader ]
  %indvars.iv = phi i64 [ %indvars.iv.next, %scalar.ph ], [ %indvars.iv.ph, %scalar.ph.preheader ]
  %24 = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %11, i64 %indvars.iv
  %25 = load i32, ptr %24, align 4, !tbaa !5
  %26 = add nsw i32 %23, %25
  %27 = srem i32 %26, 1007
  %28 = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %indvars.iv21, i64 %indvars.iv
  store i32 %27, ptr %28, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %indvars.iv21
  br i1 %exitcond.not, label %._crit_edge, label %scalar.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %scalar.ph, %middle.block, %7
  %indvars.iv.next22 = add nuw nsw i64 %indvars.iv21, 1
  %exitcond24.not = icmp eq i64 %indvars.iv.next22, 2003
  %indvar.next = add i64 %indvar, 1
  br i1 %exitcond24.not, label %.preheader, label %7, !llvm.loop !14

.lr.ph18:                                         ; preds = %.preheader, %.lr.ph18
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %29 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %3, ptr noundef nonnull %2)
  %30 = load i32, ptr %2, align 4, !tbaa !5
  %31 = add nsw i32 %30, 1
  %32 = sext i32 %31 to i64
  %33 = load i32, ptr %3, align 4, !tbaa !5
  %34 = add nsw i32 %33, 1
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds [2005 x [2005 x i32]], ptr @arr, i64 0, i64 %32, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !5
  %38 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %37)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  %39 = load i32, ptr %1, align 4, !tbaa !5
  %40 = add nsw i32 %39, -1
  store i32 %40, ptr %1, align 4, !tbaa !5
  %.not = icmp eq i32 %39, 0
  br i1 %.not, label %._crit_edge19, label %.lr.ph18, !llvm.loop !15

._crit_edge19:                                    ; preds = %.lr.ph18, %.preheader
  call void @llvm.lifetime.end.p0(i64 4, 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10, !12, !11}
!14 = distinct !{!14, !10}
!15 = distinct !{!15, !10}


; Effective O3 passes: BDCEPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass