; LLVM IR from ravireddy07/cpp-book :: src/Code-Forces/#698_nezzar-and-board.ll (Z5harryv)

; 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"

@n = external dso_local global i32, align 4
@k = external dso_local global i64, align 8
@x = external dso_local global [200100 x i64], align 16
@.str = external hidden unnamed_addr constant [8 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5harryv() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i32, align 4
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n, ptr noundef @k)
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #5
  store i32 1, ptr %1, align 4, !tbaa !5
  br label %5

5:                                                ; preds = %15, %0
  %6 = load i32, ptr %1, align 4, !tbaa !5
  %7 = load i32, ptr @n, align 4, !tbaa !5
  %8 = icmp sle i32 %6, %7
  br i1 %8, label %10, label %9

9:                                                ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #5
  br label %18

10:                                               ; preds = %5
  %11 = load i32, ptr %1, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [200100 x i64], ptr @x, i64 0, i64 %12
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %13)
  br label %15

15:                                               ; preds = %10
  %16 = load i32, ptr %1, align 4, !tbaa !5
  %17 = add nsw i32 %16, 1
  store i32 %17, ptr %1, align 4, !tbaa !5
  br label %5, !llvm.loop !9

18:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #5
  store i64 0, ptr %2, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %19

19:                                               ; preds = %37, %18
  %20 = load i32, ptr %3, align 4, !tbaa !5
  %21 = load i32, ptr @n, align 4, !tbaa !5
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  br label %40

24:                                               ; preds = %19
  %25 = load i64, ptr %2, align 8, !tbaa !11
  %26 = load i32, ptr %3, align 4, !tbaa !5
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds [200100 x i64], ptr @x, i64 0, i64 %27
  %29 = load i64, ptr %28, align 8, !tbaa !11
  %30 = load i32, ptr @n, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [200100 x i64], ptr @x, i64 0, i64 %31
  %33 = load i64, ptr %32, align 8, !tbaa !11
  %34 = sub nsw i64 %29, %33
  %35 = call noundef i64 @_ZSt3absx(i64 noundef %34)
  %36 = call noundef i64 @_ZSt5__gcdIxET_S0_S0_(i64 noundef %25, i64 noundef %35)
  store i64 %36, ptr %2, align 8, !tbaa !11
  br label %37

37:                                               ; preds = %24
  %38 = load i32, ptr %3, align 4, !tbaa !5
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %3, align 4, !tbaa !5
  br label %19, !llvm.loop !13

40:                                               ; preds = %23
  %41 = load i64, ptr @k, align 8, !tbaa !11
  %42 = load i32, ptr @n, align 4, !tbaa !5
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds [200100 x i64], ptr @x, i64 0, i64 %43
  %45 = load i64, ptr %44, align 8, !tbaa !11
  %46 = sub nsw i64 %41, %45
  %47 = load i64, ptr %2, align 8, !tbaa !11
  %48 = srem i64 %46, %47
  %49 = icmp eq i64 %48, 0
  br i1 %49, label %50, label %52

50:                                               ; preds = %40
  %51 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %54

52:                                               ; preds = %40
  %53 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  br label %54

54:                                               ; preds = %52, %50
  %55 = phi i32 [ %51, %50 ], [ %53, %52 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #5
  ret void
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZSt5__gcdIxET_S0_S0_(i64 noundef, i64 noundef) #3

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZSt3absx(i64 noundef) #4

declare i32 @printf(ptr noundef, ...) #1

attributes #0 = { 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 #1 = { "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { inlinehint 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 #5 = { 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 = !{!12, !12, i64 0}
!12 = !{!"long long", !7, i64 0}
!13 = distinct !{!13, !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"

@n = external dso_local global i32, align 4
@k = external dso_local global i64, align 8
@x = external dso_local global [200100 x i64], align 16
@.str = external hidden unnamed_addr constant [8 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z5harryv() local_unnamed_addr #0 {
  %1 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @k)
  %2 = load i32, ptr @n, align 4, !tbaa !5
  %.not11 = icmp slt i32 %2, 1
  br i1 %.not11, label %.preheader.._crit_edge_crit_edge, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph
  %3 = icmp sgt i32 %7, 1
  br i1 %3, label %.lr.ph15, label %.preheader.._crit_edge_crit_edge

.preheader.._crit_edge_crit_edge:                 ; preds = %0, %.preheader
  %4 = phi i32 [ %7, %.preheader ], [ %2, %0 ]
  %.pre = sext i32 %4 to i64
  br label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 1, %0 ]
  %5 = getelementptr inbounds [200100 x i64], ptr @x, i64 0, i64 %indvars.iv
  %6 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %5)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %7 = load i32, ptr @n, align 4, !tbaa !5
  %8 = sext i32 %7 to i64
  %.not.not = icmp slt i64 %indvars.iv, %8
  br i1 %.not.not, label %.lr.ph, label %.preheader, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph15, %.preheader.._crit_edge_crit_edge
  %.pre-phi = phi i64 [ %.pre, %.preheader.._crit_edge_crit_edge ], [ %26, %.lr.ph15 ]
  %.08.lcssa = phi i64 [ 0, %.preheader.._crit_edge_crit_edge ], [ %24, %.lr.ph15 ]
  %9 = load i64, ptr @k, align 8, !tbaa !11
  %10 = getelementptr inbounds [200100 x i64], ptr @x, i64 0, i64 %.pre-phi
  %11 = load i64, ptr %10, align 8, !tbaa !11
  %12 = sub nsw i64 %9, %11
  %13 = srem i64 %12, %.08.lcssa
  %14 = icmp eq i64 %13, 0
  %.str.2..str.3 = select i1 %14, ptr @.str.2, ptr @.str.3
  %15 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.2..str.3)
  ret void

.lr.ph15:                                         ; preds = %.preheader, %.lr.ph15
  %indvars.iv20 = phi i64 [ %indvars.iv.next21, %.lr.ph15 ], [ 1, %.preheader ]
  %16 = phi i32 [ %25, %.lr.ph15 ], [ %7, %.preheader ]
  %.0813 = phi i64 [ %24, %.lr.ph15 ], [ 0, %.preheader ]
  %17 = getelementptr inbounds [200100 x i64], ptr @x, i64 0, i64 %indvars.iv20
  %18 = load i64, ptr %17, align 8, !tbaa !11
  %19 = sext i32 %16 to i64
  %20 = getelementptr inbounds [200100 x i64], ptr @x, i64 0, i64 %19
  %21 = load i64, ptr %20, align 8, !tbaa !11
  %22 = sub nsw i64 %18, %21
  %23 = tail call noundef i64 @_ZSt3absx(i64 noundef %22)
  %24 = tail call noundef i64 @_ZSt5__gcdIxET_S0_S0_(i64 noundef %.0813, i64 noundef %23)
  %indvars.iv.next21 = add nuw nsw i64 %indvars.iv20, 1
  %25 = load i32, ptr @n, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = icmp slt i64 %indvars.iv.next21, %26
  br i1 %27, label %.lr.ph15, label %._crit_edge, !llvm.loop !13
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZSt5__gcdIxET_S0_S0_(i64 noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZSt3absx(i64 noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

attributes #0 = { 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 #1 = { 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 #2 = { inlinehint 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" }

!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 = !{!12, !12, i64 0}
!12 = !{!"long long", !7, i64 0}
!13 = distinct !{!13, !10}


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