; LLVM IR from brpapa/algorithms :: solutions/uva/11137.ll (Z2ccii)

; 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 }

@coins = external dso_local global %"class.std::vector", align 8
@memo = external dso_local global [25 x [10000 x i64]], align 16

; Function Attrs: mustprogress uwtable
define dso_local noundef i64 @_Z2ccii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i64, align 8
  %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 = icmp eq i32 %8, 0
  br i1 %9, label %10, label %11

10:                                               ; preds = %2
  store i64 1, ptr %3, align 8
  br label %49

11:                                               ; preds = %2
  %12 = load i32, ptr %5, align 4, !tbaa !5
  %13 = icmp slt i32 %12, 0
  br i1 %13, label %19, label %14

14:                                               ; preds = %11
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @coins) #3
  %18 = icmp eq i64 %16, %17
  br i1 %18, label %19, label %20

19:                                               ; preds = %14, %11
  store i64 0, ptr %3, align 8
  br label %49

20:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %21 = load i32, ptr %4, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [25 x [10000 x i64]], ptr @memo, i64 0, i64 %22
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [10000 x i64], ptr %23, i64 0, i64 %25
  store ptr %26, ptr %6, align 8, !tbaa !9
  %27 = load ptr, ptr %6, align 8, !tbaa !9
  %28 = load i64, ptr %27, align 8, !tbaa !11
  %29 = icmp ne i64 %28, -1
  br i1 %29, label %30, label %33

30:                                               ; preds = %20
  %31 = load ptr, ptr %6, align 8, !tbaa !9
  %32 = load i64, ptr %31, align 8, !tbaa !11
  store i64 %32, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %48

33:                                               ; preds = %20
  %34 = load i32, ptr %4, align 4, !tbaa !5
  %35 = load i32, ptr %5, align 4, !tbaa !5
  %36 = load i32, ptr %4, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @coins, i64 noundef %37) #3
  %39 = load i32, ptr %38, align 4, !tbaa !5
  %40 = sub nsw i32 %35, %39
  %41 = call noundef i64 @_Z2ccii(i32 noundef %34, i32 noundef %40)
  %42 = load i32, ptr %4, align 4, !tbaa !5
  %43 = add nsw i32 %42, 1
  %44 = load i32, ptr %5, align 4, !tbaa !5
  %45 = call noundef i64 @_Z2ccii(i32 noundef %43, i32 noundef %44)
  %46 = add nsw i64 %41, %45
  %47 = load ptr, ptr %6, align 8, !tbaa !9
  store i64 %46, ptr %47, align 8, !tbaa !11
  store i64 %46, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %48

48:                                               ; preds = %33, %30
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %49

49:                                               ; preds = %48, %19, %10
  %50 = load i64, ptr %3, align 8
  ret i64 %50
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #1 align 2

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

; 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) #1 align 2

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

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 = { 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 #2 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long long", !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 }

@coins = external dso_local global %"class.std::vector", align 8
@memo = external dso_local local_unnamed_addr global [25 x [10000 x i64]], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i64 @_Z2ccii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp eq i32 %1, 0
  br i1 %3, label %common.ret16, label %4

4:                                                ; preds = %2
  %5 = icmp slt i32 %1, 0
  br i1 %5, label %common.ret16, label %6

6:                                                ; preds = %4
  %7 = sext i32 %0 to i64
  %8 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) @coins) #1
  %9 = icmp eq i64 %8, %7
  br i1 %9, label %common.ret16, label %10

10:                                               ; preds = %6
  %11 = zext nneg i32 %1 to i64
  %12 = getelementptr inbounds [25 x [10000 x i64]], ptr @memo, i64 0, i64 %7, i64 %11
  %13 = load i64, ptr %12, align 8, !tbaa !5
  %.not = icmp eq i64 %13, -1
  br i1 %.not, label %14, label %common.ret16

common.ret16:                                     ; preds = %10, %4, %6, %2, %14
  %common.ret16.op = phi i64 [ %21, %14 ], [ 1, %2 ], [ 0, %6 ], [ 0, %4 ], [ %13, %10 ]
  ret i64 %common.ret16.op

14:                                               ; preds = %10
  %15 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) @coins, i64 noundef %7) #1
  %16 = load i32, ptr %15, align 4, !tbaa !9
  %17 = sub nsw i32 %1, %16
  %18 = tail call noundef i64 @_Z2ccii(i32 noundef %0, i32 noundef %17)
  %19 = add nsw i32 %0, 1
  %20 = tail call noundef i64 @_Z2ccii(i32 noundef %19, i32 noundef %1)
  %21 = add nsw i64 %20, %18
  store i64 %21, ptr %12, align 8, !tbaa !5
  br label %common.ret16
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; 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

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 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}


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