; LLVM IR from gargarchit/Data_Structure_n_Algorithms :: Competitive_Programming/Knapsack_Problem.ll (Z8SolveRecSt6vectorISt4pairIiiESaIS1_EEiiii)

; 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<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z8SolveRecSt6vectorISt4pairIiiESaIS1_EEiiii(ptr noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) #0 personality ptr @__gxx_personality_v0 {
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  %14 = alloca i32, align 4
  %15 = alloca %"class.std::vector", align 8
  %16 = alloca ptr, align 8
  %17 = alloca i32, align 4
  %18 = alloca i32, align 4
  %19 = alloca %"class.std::vector", align 8
  store ptr %0, ptr %7, align 8, !tbaa !5
  store i32 %1, ptr %8, align 4, !tbaa !9
  store i32 %2, ptr %9, align 4, !tbaa !9
  store i32 %3, ptr %10, align 4, !tbaa !9
  store i32 %4, ptr %11, align 4, !tbaa !9
  %20 = load i32, ptr %10, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  %23 = icmp uge i64 %21, %22
  br i1 %23, label %24, label %26

24:                                               ; preds = %5
  %25 = load i32, ptr %11, align 4, !tbaa !9
  store i32 %25, ptr %6, align 4
  br label %75

26:                                               ; preds = %5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #4
  %27 = load i32, ptr %10, align 4, !tbaa !9
  %28 = sext i32 %27 to i64
  %29 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %28) #4
  %30 = getelementptr inbounds %"struct.std::pair", ptr %29, i32 0, i32 0
  %31 = load i32, ptr %30, align 4, !tbaa !11
  store i32 %31, ptr %12, align 4, !tbaa !9
  %32 = load i32, ptr %9, align 4, !tbaa !9
  %33 = load i32, ptr %12, align 4, !tbaa !9
  %34 = add nsw i32 %32, %33
  %35 = load i32, ptr %8, align 4, !tbaa !9
  %36 = icmp sgt i32 %34, %35
  br i1 %36, label %37, label %39

37:                                               ; preds = %26
  %38 = load i32, ptr %11, align 4, !tbaa !9
  store i32 %38, ptr %6, align 4
  store i32 1, ptr %13, align 4
  br label %74

39:                                               ; preds = %26
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %15, ptr noundef nonnull align 8 dereferenceable(24) %0)
  %40 = load i32, ptr %8, align 4, !tbaa !9
  %41 = load i32, ptr %9, align 4, !tbaa !9
  %42 = load i32, ptr %12, align 4, !tbaa !9
  %43 = add nsw i32 %41, %42
  %44 = load i32, ptr %10, align 4, !tbaa !9
  %45 = add nsw i32 %44, 1
  %46 = load i32, ptr %11, align 4, !tbaa !9
  %47 = load i32, ptr %10, align 4, !tbaa !9
  %48 = sext i32 %47 to i64
  %49 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %48) #4
  %50 = getelementptr inbounds %"struct.std::pair", ptr %49, i32 0, i32 1
  %51 = load i32, ptr %50, align 4, !tbaa !13
  %52 = add nsw i32 %46, %51
  %53 = invoke noundef i32 @_Z8SolveRecSt6vectorISt4pairIiiESaIS1_EEiiii(ptr noundef %15, i32 noundef %40, i32 noundef %43, i32 noundef %45, i32 noundef %52)
          to label %54 unwind label %65

54:                                               ; preds = %39
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %15) #4
  store i32 %53, ptr %14, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %18) #4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %19, ptr noundef nonnull align 8 dereferenceable(24) %0)
  %55 = load i32, ptr %8, align 4, !tbaa !9
  %56 = load i32, ptr %9, align 4, !tbaa !9
  %57 = load i32, ptr %10, align 4, !tbaa !9
  %58 = add nsw i32 %57, 1
  %59 = load i32, ptr %11, align 4, !tbaa !9
  %60 = invoke noundef i32 @_Z8SolveRecSt6vectorISt4pairIiiESaIS1_EEiiii(ptr noundef %19, i32 noundef %55, i32 noundef %56, i32 noundef %58, i32 noundef %59)
          to label %61 unwind label %69

61:                                               ; preds = %54
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %19) #4
  store i32 %60, ptr %18, align 4, !tbaa !9
  %62 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %14, ptr noundef nonnull align 4 dereferenceable(4) %18)
  %63 = load i32, ptr %62, align 4, !tbaa !9
  store i32 %63, ptr %11, align 4, !tbaa !9
  %64 = load i32, ptr %11, align 4, !tbaa !9
  store i32 %64, ptr %6, align 4
  store i32 1, ptr %13, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %18) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  br label %74

65:                                               ; preds = %39
  %66 = landingpad { ptr, i32 }
          cleanup
  %67 = extractvalue { ptr, i32 } %66, 0
  store ptr %67, ptr %16, align 8
  %68 = extractvalue { ptr, i32 } %66, 1
  store i32 %68, ptr %17, align 4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %15) #4
  br label %73

69:                                               ; preds = %54
  %70 = landingpad { ptr, i32 }
          cleanup
  %71 = extractvalue { ptr, i32 } %70, 0
  store ptr %71, ptr %16, align 8
  %72 = extractvalue { ptr, i32 } %70, 1
  store i32 %72, ptr %17, align 4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %19) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %18) #4
  br label %73

73:                                               ; preds = %69, %65
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  br label %77

74:                                               ; preds = %61, %37
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #4
  br label %75

75:                                               ; preds = %74, %24
  %76 = load i32, ptr %6, align 4
  ret i32 %76

77:                                               ; preds = %73
  %78 = load ptr, ptr %16, align 8
  %79 = load i32, ptr %17, align 4
  %80 = insertvalue { ptr, i32 } poison, ptr %78, 0
  %81 = insertvalue { ptr, i32 } %80, i32 %79, 1
  resume { ptr, i32 } %81
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(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(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_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) #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 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_ZTSSt4pairIiiE", !10, i64 0, !10, i64 4}
!13 = !{!12, !10, i64 4}


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

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_Z8SolveRecSt6vectorISt4pairIiiESaIS1_EEiiii(ptr noundef nonnull %0, i32 noundef %1, i32 noundef %2, i32 noundef %3, i32 noundef %4) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %6 = alloca i32, align 4
  %7 = alloca %"class.std::vector", align 8
  %8 = alloca i32, align 4
  %9 = alloca %"class.std::vector", align 8
  %10 = sext i32 %3 to i64
  %11 = tail call noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #4
  %.not = icmp ugt i64 %11, %10
  br i1 %.not, label %12, label %34

12:                                               ; preds = %5
  %13 = tail call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %10) #4
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = add nsw i32 %14, %2
  %16 = icmp sgt i32 %15, %1
  br i1 %16, label %34, label %17

17:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %6) #4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %7, ptr noundef nonnull align 8 dereferenceable(24) %0)
  %18 = add nsw i32 %3, 1
  %19 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %10) #4
  %20 = getelementptr inbounds i8, ptr %19, i64 4
  %21 = load i32, ptr %20, align 4, !tbaa !10
  %22 = add nsw i32 %21, %4
  %23 = invoke noundef i32 @_Z8SolveRecSt6vectorISt4pairIiiESaIS1_EEiiii(ptr noundef nonnull %7, i32 noundef %1, i32 noundef %15, i32 noundef %18, i32 noundef %22)
          to label %24 unwind label %29

24:                                               ; preds = %17
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  store i32 %23, ptr %6, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %8) #4
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24) %9, ptr noundef nonnull align 8 dereferenceable(24) %0)
  %25 = invoke noundef i32 @_Z8SolveRecSt6vectorISt4pairIiiESaIS1_EEiiii(ptr noundef nonnull %9, i32 noundef %1, i32 noundef %2, i32 noundef %18, i32 noundef %4)
          to label %26 unwind label %31

26:                                               ; preds = %24
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %9) #4
  store i32 %25, ptr %8, align 4, !tbaa !11
  %27 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %8)
  %28 = load i32, ptr %27, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #4
  br label %34

29:                                               ; preds = %17
  %30 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %7) #4
  br label %33

31:                                               ; preds = %24
  %32 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %9) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %8) #4
  br label %33

33:                                               ; preds = %31, %29
  %.pn = phi { ptr, i32 } [ %32, %31 ], [ %30, %29 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %6) #4
  resume { ptr, i32 } %.pn

34:                                               ; preds = %26, %12, %5
  %.1 = phi i32 [ %4, %5 ], [ %28, %26 ], [ %4, %12 ]
  ret i32 %.1
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorISt4pairIiiESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress 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(8) ptr @_ZNSt6vectorISt4pairIiiESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EEC2ERKS3_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorISt4pairIiiESaIS1_EED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #1 align 2

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #3

; Function Attrs: mustprogress 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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, !7, i64 0}
!6 = !{!"_ZTSSt4pairIiiE", !7, i64 0, !7, i64 4}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 4}
!11 = !{!7, !7, i64 0}


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