; LLVM IR from Izaron/ACM-ICPC :: Timus Online Judge/Volume 3/1244. Gentlemen.ll (Z4calcii)

; 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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@calced = external dso_local global [100 x [100000 x i32]], align 16
@all = external dso_local global i32, align 4
@n = external dso_local global i32, align 4
@cards = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z4calcii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %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 %5, align 4, !tbaa !5
  %9 = load i32, ptr @all, align 4, !tbaa !5
  %10 = icmp eq i32 %8, %9
  br i1 %10, label %11, label %12

11:                                               ; preds = %2
  store i32 1, ptr %3, align 4
  br label %67

12:                                               ; preds = %2
  %13 = load i32, ptr %5, align 4, !tbaa !5
  %14 = load i32, ptr @all, align 4, !tbaa !5
  %15 = icmp sgt i32 %13, %14
  br i1 %15, label %16, label %17

16:                                               ; preds = %12
  store i32 0, ptr %3, align 4
  br label %67

17:                                               ; preds = %12
  %18 = load i32, ptr %4, align 4, !tbaa !5
  %19 = load i32, ptr @n, align 4, !tbaa !5
  %20 = icmp eq i32 %18, %19
  br i1 %20, label %21, label %22

21:                                               ; preds = %17
  store i32 0, ptr %3, align 4
  br label %67

22:                                               ; preds = %17
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds [100 x [100000 x i32]], ptr @calced, i64 0, i64 %24
  %26 = load i32, ptr %5, align 4, !tbaa !5
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds [100000 x i32], ptr %25, i64 0, i64 %27
  %29 = load i32, ptr %28, align 4, !tbaa !5
  %30 = icmp ne i32 %29, -1
  br i1 %30, label %31, label %39

31:                                               ; preds = %22
  %32 = load i32, ptr %4, align 4, !tbaa !5
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds [100 x [100000 x i32]], ptr @calced, i64 0, i64 %33
  %35 = load i32, ptr %5, align 4, !tbaa !5
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds [100000 x i32], ptr %34, i64 0, i64 %36
  %38 = load i32, ptr %37, align 4, !tbaa !5
  store i32 %38, ptr %3, align 4
  br label %67

39:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %40 = load i32, ptr %4, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [100 x [100000 x i32]], ptr @calced, i64 0, i64 %41
  %43 = load i32, ptr %5, align 4, !tbaa !5
  %44 = sext i32 %43 to i64
  %45 = getelementptr inbounds [100000 x i32], ptr %42, i64 0, i64 %44
  store ptr %45, ptr %6, align 8, !tbaa !9
  %46 = load i32, ptr %4, align 4, !tbaa !5
  %47 = add nsw i32 %46, 1
  %48 = load i32, ptr %5, align 4, !tbaa !5
  %49 = call noundef i32 @_Z4calcii(i32 noundef %47, i32 noundef %48)
  %50 = load i32, ptr %4, align 4, !tbaa !5
  %51 = add nsw i32 %50, 1
  %52 = load i32, ptr %5, align 4, !tbaa !5
  %53 = load i32, ptr %4, align 4, !tbaa !5
  %54 = sext i32 %53 to i64
  %55 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @cards, i64 noundef %54) #4
  %56 = load i32, ptr %55, align 4, !tbaa !5
  %57 = add nsw i32 %52, %56
  %58 = call noundef i32 @_Z4calcii(i32 noundef %51, i32 noundef %57)
  %59 = add nsw i32 %49, %58
  %60 = load ptr, ptr %6, align 8, !tbaa !9
  store i32 %59, ptr %60, align 4, !tbaa !5
  %61 = load ptr, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 2, ptr %7, align 4, !tbaa !5
  %62 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %61, ptr noundef nonnull align 4 dereferenceable(4) %7)
  %63 = load i32, ptr %62, align 4, !tbaa !5
  %64 = load ptr, ptr %6, align 8, !tbaa !9
  store i32 %63, ptr %64, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  %65 = load ptr, ptr %6, align 8, !tbaa !9
  %66 = load i32, ptr %65, align 4, !tbaa !5
  store i32 %66, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  br label %67

67:                                               ; preds = %39, %31, %21, %16, %11
  %68 = load i32, ptr %3, align 4
  ret i32 %68
}

; 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 dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), 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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }

@calced = external dso_local global [100 x [100000 x i32]], align 16
@all = external dso_local local_unnamed_addr global i32, align 4
@n = external dso_local local_unnamed_addr global i32, align 4
@cards = external dso_local global %"class.std::vector", align 8

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z4calcii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = alloca i32, align 4
  %4 = load i32, ptr @all, align 4, !tbaa !5
  %5 = icmp eq i32 %4, %1
  br i1 %5, label %common.ret23, label %6

6:                                                ; preds = %2
  %7 = icmp slt i32 %4, %1
  %8 = load i32, ptr @n, align 4
  %9 = icmp eq i32 %8, %0
  %or.cond = select i1 %7, i1 true, i1 %9
  br i1 %or.cond, label %common.ret23, label %10

10:                                               ; preds = %6
  %11 = sext i32 %0 to i64
  %12 = sext i32 %1 to i64
  %13 = getelementptr inbounds [100 x [100000 x i32]], ptr @calced, i64 0, i64 %11, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %.not = icmp eq i32 %14, -1
  br i1 %.not, label %15, label %common.ret23

common.ret23:                                     ; preds = %10, %6, %2, %15
  %common.ret23.op = phi i32 [ %24, %15 ], [ 1, %2 ], [ 0, %6 ], [ %14, %10 ]
  ret i32 %common.ret23.op

15:                                               ; preds = %10
  %16 = add nsw i32 %0, 1
  %17 = tail call noundef i32 @_Z4calcii(i32 noundef %16, i32 noundef %1)
  %18 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @cards, i64 noundef %11) #3
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %20 = add nsw i32 %19, %1
  %21 = tail call noundef i32 @_Z4calcii(i32 noundef %16, i32 noundef %20)
  %22 = add nsw i32 %21, %17
  store i32 %22, ptr %13, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  store i32 2, ptr %3, align 4, !tbaa !5
  %23 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %13, ptr noundef nonnull align 4 dereferenceable(4) %3)
  %24 = load i32, ptr %23, align 4, !tbaa !5
  store i32 %24, ptr %13, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  br label %common.ret23
}

; 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 dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), 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"}


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