; LLVM IR from brpapa/algorithms :: solutions/uri/1322.ll (Z4initv)

; 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 }
%"class.std::unordered_map" = type { %"class.std::_Hashtable" }
%"class.std::_Hashtable" = type { ptr, i64, %"struct.std::__detail::_Hash_node_base", i64, %"struct.std::__detail::_Prime_rehash_policy", ptr }
%"struct.std::__detail::_Hash_node_base" = type { ptr }
%"struct.std::__detail::_Prime_rehash_policy" = type { float, i64 }

@grafo = external dso_local global [200000 x %"class.std::vector"], align 16
@grau = external dso_local global [200000 x i32], align 16
@pre = external dso_local global [200000 x i32], align 16
@temConflito = external dso_local global i8, align 1
@visitado = external dso_local global [200000 x i8], align 16
@id = external dso_local global %"class.std::unordered_map", align 8

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z4initv() #0 {
  %1 = alloca i32, align 4
  call void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEE5clearEv(ptr noundef nonnull align 8 dereferenceable(56) @id) #2
  store i8 0, ptr @temConflito, align 1, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #2
  store i32 0, ptr %1, align 4, !tbaa !9
  br label %2

2:                                                ; preds = %19, %0
  %3 = load i32, ptr %1, align 4, !tbaa !9
  %4 = icmp slt i32 %3, 200000
  br i1 %4, label %6, label %5

5:                                                ; preds = %2
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #2
  br label %22

6:                                                ; preds = %2
  %7 = load i32, ptr %1, align 4, !tbaa !9
  %8 = sext i32 %7 to i64
  %9 = getelementptr inbounds [200000 x %"class.std::vector"], ptr @grafo, i64 0, i64 %8
  call void @_ZNSt6vectorIiSaIiEE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %9) #2
  %10 = load i32, ptr %1, align 4, !tbaa !9
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds [200000 x i32], ptr @grau, i64 0, i64 %11
  store i32 0, ptr %12, align 4, !tbaa !9
  %13 = load i32, ptr %1, align 4, !tbaa !9
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [200000 x i32], ptr @pre, i64 0, i64 %14
  store i32 -1, ptr %15, align 4, !tbaa !9
  %16 = load i32, ptr %1, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [200000 x i8], ptr @visitado, i64 0, i64 %17
  store i8 0, ptr %18, align 1, !tbaa !5
  br label %19

19:                                               ; preds = %6
  %20 = load i32, ptr %1, align 4, !tbaa !9
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %1, align 4, !tbaa !9
  br label %2, !llvm.loop !11

22:                                               ; preds = %5
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEE5clearEv(ptr noundef nonnull align 8 dereferenceable(56)) #0 align 2

; 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 void @_ZNSt6vectorIiSaIiEE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 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 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 = !{!"bool", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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 }
%"class.std::unordered_map" = type { %"class.std::_Hashtable" }
%"class.std::_Hashtable" = type { ptr, i64, %"struct.std::__detail::_Hash_node_base", i64, %"struct.std::__detail::_Prime_rehash_policy", ptr }
%"struct.std::__detail::_Hash_node_base" = type { ptr }
%"struct.std::__detail::_Prime_rehash_policy" = type { float, i64 }

@grafo = external dso_local global [200000 x %"class.std::vector"], align 16
@grau = external dso_local local_unnamed_addr global [200000 x i32], align 16
@pre = external dso_local local_unnamed_addr global [200000 x i32], align 16
@temConflito = external dso_local local_unnamed_addr global i8, align 1
@visitado = external dso_local local_unnamed_addr global [200000 x i8], align 16
@id = external dso_local global %"class.std::unordered_map", align 8

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z4initv() local_unnamed_addr #0 {
  tail call void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEE5clearEv(ptr noundef nonnull align 8 dereferenceable(56) @id) #1
  store i8 0, ptr @temConflito, align 1, !tbaa !5
  br label %2

1:                                                ; preds = %2
  ret void

2:                                                ; preds = %0, %2
  %indvars.iv = phi i64 [ 0, %0 ], [ %indvars.iv.next, %2 ]
  %3 = getelementptr inbounds [200000 x %"class.std::vector"], ptr @grafo, i64 0, i64 %indvars.iv
  tail call void @_ZNSt6vectorIiSaIiEE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %3) #1
  %4 = getelementptr inbounds [200000 x i32], ptr @grau, i64 0, i64 %indvars.iv
  store i32 0, ptr %4, align 4, !tbaa !9
  %5 = getelementptr inbounds [200000 x i32], ptr @pre, i64 0, i64 %indvars.iv
  store i32 -1, ptr %5, align 4, !tbaa !9
  %6 = getelementptr inbounds [200000 x i8], ptr @visitado, i64 0, i64 %indvars.iv
  store i8 0, ptr %6, align 1, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, 200000
  br i1 %exitcond.not, label %1, label %2, !llvm.loop !11
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEE5clearEv(ptr noundef nonnull align 8 dereferenceable(56)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) 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 = !{!"bool", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,SROAPass,SimplifyCFGPass,TailCallElimPass