; LLVM IR from Shah-Shishir/Codeforces-Solutions :: 12A. Increasing Sequence (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"

@arr = external dso_local global [2005 x i32], align 16
@.str = external hidden unnamed_addr constant [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 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
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  br label %7

7:                                                ; preds = %68, %0
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %2, ptr noundef %4)
  %9 = icmp ne i32 %8, -1
  br i1 %9, label %10, label %71

10:                                               ; preds = %7
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %11

11:                                               ; preds = %20, %10
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %15, label %23

15:                                               ; preds = %11
  %16 = load i32, ptr %3, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [2005 x i32], ptr @arr, i64 0, i64 %17
  %19 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %18)
  br label %20

20:                                               ; preds = %15
  %21 = load i32, ptr %3, align 4, !tbaa !5
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %3, align 4, !tbaa !5
  br label %11, !llvm.loop !9

23:                                               ; preds = %11
  store i32 0, ptr %6, align 4, !tbaa !5
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %65, %23
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = load i32, ptr %2, align 4, !tbaa !5
  %27 = icmp slt i32 %25, %26
  br i1 %27, label %28, label %68

28:                                               ; preds = %24
  %29 = load i32, ptr %3, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [2005 x i32], ptr @arr, i64 0, i64 %30
  %32 = load i32, ptr %31, align 4, !tbaa !5
  %33 = load i32, ptr %3, align 4, !tbaa !5
  %34 = sub nsw i32 %33, 1
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds [2005 x i32], ptr @arr, i64 0, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !5
  %38 = icmp sle i32 %32, %37
  br i1 %38, label %39, label %64

39:                                               ; preds = %28
  %40 = load i32, ptr %3, align 4, !tbaa !5
  %41 = sub nsw i32 %40, 1
  %42 = sext i32 %41 to i64
  %43 = getelementptr inbounds [2005 x i32], ptr @arr, i64 0, i64 %42
  %44 = load i32, ptr %43, align 4, !tbaa !5
  %45 = load i32, ptr %3, align 4, !tbaa !5
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds [2005 x i32], ptr @arr, i64 0, i64 %46
  %48 = load i32, ptr %47, align 4, !tbaa !5
  %49 = sub nsw i32 %44, %48
  %50 = load i32, ptr %4, align 4, !tbaa !5
  %51 = sdiv i32 %49, %50
  %52 = add nsw i32 %51, 1
  store i32 %52, ptr %5, align 4, !tbaa !5
  %53 = load i32, ptr %5, align 4, !tbaa !5
  %54 = load i32, ptr %6, align 4, !tbaa !5
  %55 = add nsw i32 %54, %53
  store i32 %55, ptr %6, align 4, !tbaa !5
  %56 = load i32, ptr %4, align 4, !tbaa !5
  %57 = load i32, ptr %5, align 4, !tbaa !5
  %58 = mul nsw i32 %56, %57
  %59 = load i32, ptr %3, align 4, !tbaa !5
  %60 = sext i32 %59 to i64
  %61 = getelementptr inbounds [2005 x i32], ptr @arr, i64 0, i64 %60
  %62 = load i32, ptr %61, align 4, !tbaa !5
  %63 = add nsw i32 %62, %58
  store i32 %63, ptr %61, align 4, !tbaa !5
  br label %64

64:                                               ; preds = %39, %28
  br label %65

65:                                               ; preds = %64
  %66 = load i32, ptr %3, align 4, !tbaa !5
  %67 = add nsw i32 %66, 1
  store i32 %67, ptr %3, align 4, !tbaa !5
  br label %24, !llvm.loop !11

68:                                               ; preds = %24
  %69 = load i32, ptr %6, align 4, !tbaa !5
  %70 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %69)
  br label %7, !llvm.loop !12

71:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  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 global [2005 x i32], align 16
@.str = external hidden unnamed_addr constant [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 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
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %.not25 = icmp eq i32 %3, -1
  br i1 %.not25, label %._crit_edge26, label %.preheader19

.preheader19:                                     ; preds = %0, %._crit_edge
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = icmp sgt i32 %4, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

.preheader:                                       ; preds = %.lr.ph
  %6 = icmp sgt i32 %10, 1
  br i1 %6, label %.lr.ph23, label %._crit_edge

.lr.ph23:                                         ; preds = %.preheader
  %7 = load i32, ptr %2, align 4
  %wide.trip.count = zext nneg i32 %10 to i64
  %.pre = load i32, ptr @arr, align 16, !tbaa !5
  br label %13

.lr.ph:                                           ; preds = %.preheader19, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %.preheader19 ]
  %8 = getelementptr inbounds [2005 x i32], ptr @arr, i64 0, i64 %indvars.iv
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %8)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %10 = load i32, ptr %1, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = icmp slt i64 %indvars.iv.next, %11
  br i1 %12, label %.lr.ph, label %.preheader, !llvm.loop !9

13:                                               ; preds = %.lr.ph23, %24
  %14 = phi i32 [ %.pre, %.lr.ph23 ], [ %25, %24 ]
  %indvars.iv29 = phi i64 [ 1, %.lr.ph23 ], [ %indvars.iv.next30, %24 ]
  %.022 = phi i32 [ 0, %.lr.ph23 ], [ %.1, %24 ]
  %15 = getelementptr inbounds [2005 x i32], ptr @arr, i64 0, i64 %indvars.iv29
  %16 = load i32, ptr %15, align 4, !tbaa !5
  %.not18 = icmp sgt i32 %16, %14
  br i1 %.not18, label %24, label %17

17:                                               ; preds = %13
  %18 = sub nsw i32 %14, %16
  %19 = sdiv i32 %18, %7
  %20 = add nsw i32 %19, 1
  %21 = add nsw i32 %20, %.022
  %22 = mul nsw i32 %20, %7
  %23 = add nsw i32 %22, %16
  store i32 %23, ptr %15, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %13, %17
  %25 = phi i32 [ %23, %17 ], [ %16, %13 ]
  %.1 = phi i32 [ %21, %17 ], [ %.022, %13 ]
  %indvars.iv.next30 = add nuw nsw i64 %indvars.iv29, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next30, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %13, !llvm.loop !11

._crit_edge:                                      ; preds = %24, %.preheader19, %.preheader
  %.0.lcssa = phi i32 [ 0, %.preheader ], [ 0, %.preheader19 ], [ %.1, %24 ]
  %26 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %.0.lcssa)
  %27 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %.not = icmp eq i32 %27, -1
  br i1 %.not, label %._crit_edge26, label %.preheader19, !llvm.loop !12

._crit_edge26:                                    ; preds = %._crit_edge, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  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}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


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