; LLVM IR from Izaron/ACM-ICPC :: Timus Online Judge/Volume 7/1611. Decimation.ll (Z3dfsii)

; 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"

%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }

@_Z1sB5cxx11 = external dso_local global %"class.std::__cxx11::basic_string", align 8
@n = external dso_local global i32, align 4
@maxK = external dso_local global i32, align 4
@anss = external dso_local global [11005 x [55 x i32]], align 16

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z3dfsii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = load i32, ptr %5, align 4, !tbaa !5
  %10 = sub nsw i32 %8, %9
  %11 = load i32, ptr @n, align 4, !tbaa !5
  %12 = icmp sge i32 %10, %11
  br i1 %12, label %13, label %14

13:                                               ; preds = %2
  store i32 0, ptr %3, align 4
  br label %81

14:                                               ; preds = %2
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [11005 x [55 x i32]], ptr @anss, i64 0, i64 %16
  %18 = load i32, ptr %5, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds [55 x i32], ptr %17, i64 0, i64 %19
  %21 = load i32, ptr %20, align 4, !tbaa !5
  %22 = icmp ne i32 %21, -1
  br i1 %22, label %23, label %31

23:                                               ; preds = %14
  %24 = load i32, ptr %4, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [11005 x [55 x i32]], ptr @anss, i64 0, i64 %25
  %27 = load i32, ptr %5, align 4, !tbaa !5
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds [55 x i32], ptr %26, i64 0, i64 %28
  %30 = load i32, ptr %29, align 4, !tbaa !5
  store i32 %30, ptr %3, align 4
  br label %81

31:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  store i32 1000000000, ptr %6, align 4, !tbaa !5
  %32 = load i32, ptr %4, align 4, !tbaa !5
  %33 = add nsw i32 %32, 1
  %34 = load i32, ptr %5, align 4, !tbaa !5
  %35 = call noundef i32 @_Z3dfsii(i32 noundef %33, i32 noundef %34)
  store i32 %35, ptr %6, align 4, !tbaa !5
  %36 = load i32, ptr %4, align 4, !tbaa !5
  %37 = load i32, ptr %5, align 4, !tbaa !5
  %38 = sub nsw i32 %36, %37
  %39 = sext i32 %38 to i64
  %40 = call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %39)
  %41 = load i8, ptr %40, align 1, !tbaa !9
  %42 = sext i8 %41 to i32
  %43 = icmp eq i32 %42, 49
  br i1 %43, label %44, label %52

44:                                               ; preds = %31
  %45 = load i32, ptr %4, align 4, !tbaa !5
  %46 = add nsw i32 %45, 1
  %47 = srem i32 %46, 10
  %48 = icmp eq i32 %47, 0
  br i1 %48, label %49, label %52

49:                                               ; preds = %44
  %50 = load i32, ptr %6, align 4, !tbaa !5
  %51 = add nsw i32 %50, 1
  store i32 %51, ptr %6, align 4, !tbaa !5
  br label %52

52:                                               ; preds = %49, %44, %31
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 1000000000, ptr %7, align 4, !tbaa !5
  %53 = load i32, ptr %5, align 4, !tbaa !5
  %54 = load i32, ptr @maxK, align 4, !tbaa !5
  %55 = icmp slt i32 %53, %54
  br i1 %55, label %56, label %70

56:                                               ; preds = %52
  %57 = load i32, ptr %4, align 4, !tbaa !5
  %58 = add nsw i32 %57, 1
  %59 = load i32, ptr %5, align 4, !tbaa !5
  %60 = add nsw i32 %59, 1
  %61 = call noundef i32 @_Z3dfsii(i32 noundef %58, i32 noundef %60)
  store i32 %61, ptr %7, align 4, !tbaa !5
  %62 = load i32, ptr %4, align 4, !tbaa !5
  %63 = add nsw i32 %62, 1
  %64 = srem i32 %63, 10
  %65 = icmp eq i32 %64, 0
  br i1 %65, label %66, label %69

66:                                               ; preds = %56
  %67 = load i32, ptr %7, align 4, !tbaa !5
  %68 = add nsw i32 %67, 1
  store i32 %68, ptr %7, align 4, !tbaa !5
  br label %69

69:                                               ; preds = %66, %56
  br label %70

70:                                               ; preds = %69, %52
  %71 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %7, ptr noundef nonnull align 4 dereferenceable(4) %6)
  %72 = load i32, ptr %71, align 4, !tbaa !5
  %73 = load i32, ptr %4, align 4, !tbaa !5
  %74 = sext i32 %73 to i64
  %75 = getelementptr inbounds [11005 x [55 x i32]], ptr @anss, i64 0, i64 %74
  %76 = load i32, ptr %5, align 4, !tbaa !5
  %77 = sext i32 %76 to i64
  %78 = getelementptr inbounds [55 x i32], ptr %75, i64 0, i64 %77
  store i32 %72, ptr %78, align 4, !tbaa !5
  %79 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %7, ptr noundef nonnull align 4 dereferenceable(4) %6)
  %80 = load i32, ptr %79, align 4, !tbaa !5
  store i32 %80, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %81

81:                                               ; preds = %70, %23, %13
  %82 = load i32, ptr %3, align 4
  ret i32 %82
}

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

; Function Attrs: mustprogress nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) #2 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 #4 = { 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 = !{!7, !7, i64 0}


; 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"

%"class.std::__cxx11::basic_string" = type { %"struct.std::__cxx11::basic_string<char>::_Alloc_hider", i64, %union.anon }
%"struct.std::__cxx11::basic_string<char>::_Alloc_hider" = type { ptr }
%union.anon = type { i64, [8 x i8] }

@_Z1sB5cxx11 = external dso_local global %"class.std::__cxx11::basic_string", align 8
@n = external dso_local local_unnamed_addr global i32, align 4
@maxK = external dso_local local_unnamed_addr global i32, align 4
@anss = external dso_local local_unnamed_addr global [11005 x [55 x i32]], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z3dfsii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = sub nsw i32 %0, %1
  %6 = load i32, ptr @n, align 4, !tbaa !5
  %.not = icmp slt i32 %5, %6
  br i1 %.not, label %7, label %36

7:                                                ; preds = %2
  %8 = sext i32 %0 to i64
  %9 = sext i32 %1 to i64
  %10 = getelementptr inbounds [11005 x [55 x i32]], ptr @anss, i64 0, i64 %8, i64 %9
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %.not21 = icmp eq i32 %11, -1
  br i1 %.not21, label %12, label %36

12:                                               ; preds = %7
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %13 = add nsw i32 %0, 1
  %14 = tail call noundef i32 @_Z3dfsii(i32 noundef %13, i32 noundef %1)
  store i32 %14, ptr %3, align 4, !tbaa !5
  %15 = sext i32 %5 to i64
  %16 = tail call noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32) @_Z1sB5cxx11, i64 noundef %15)
  %17 = load i8, ptr %16, align 1, !tbaa !9
  %18 = icmp eq i8 %17, 49
  %19 = srem i32 %13, 10
  %20 = icmp eq i32 %19, 0
  %or.cond = and i1 %20, %18
  br i1 %or.cond, label %21, label %23

21:                                               ; preds = %12
  %22 = add nsw i32 %14, 1
  store i32 %22, ptr %3, align 4, !tbaa !5
  br label %23

23:                                               ; preds = %21, %12
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #3
  store i32 1000000000, ptr %4, align 4, !tbaa !5
  %24 = load i32, ptr @maxK, align 4, !tbaa !5
  %25 = icmp sgt i32 %24, %1
  br i1 %25, label %26, label %31

26:                                               ; preds = %23
  %27 = add nsw i32 %1, 1
  %28 = tail call noundef i32 @_Z3dfsii(i32 noundef %13, i32 noundef %27)
  store i32 %28, ptr %4, align 4, !tbaa !5
  br i1 %20, label %29, label %31

29:                                               ; preds = %26
  %30 = add nsw i32 %28, 1
  store i32 %30, ptr %4, align 4, !tbaa !5
  br label %31

31:                                               ; preds = %26, %29, %23
  %32 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %33 = load i32, ptr %32, align 4, !tbaa !5
  store i32 %33, ptr %10, align 4, !tbaa !5
  %34 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %35 = load i32, ptr %34, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  br label %36

36:                                               ; preds = %7, %2, %31
  %.0 = phi i32 [ %35, %31 ], [ 0, %2 ], [ %11, %7 ]
  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 nounwind uwtable
declare noundef nonnull align 1 dereferenceable(1) ptr @_ZNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEixEm(ptr noundef nonnull align 8 dereferenceable(32), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) 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 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 = { 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 #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 = !{!7, !7, i64 0}


; Effective O3 passes: DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass