; LLVM IR from manishbisht/Competitive-Programming :: Algorithms/Graph Algorithms/prim.ll (ZN5Graph7addEdgeEiii)

; 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"

%"struct.std::pair" = type { i32, i32 }
%class.Graph = type { i32, ptr }
%"class.std::__cxx11::list" = type { %"class.std::__cxx11::_List_base" }
%"class.std::__cxx11::_List_base" = type { %"struct.std::__cxx11::_List_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_List_impl" }
%"struct.std::__cxx11::_List_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_List_impl" = type { %"struct.std::__detail::_List_node_header" }
%"struct.std::__detail::_List_node_header" = type { %"struct.std::__detail::_List_node_base", i64 }
%"struct.std::__detail::_List_node_base" = type { ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN5Graph7addEdgeEiii(ptr noundef nonnull align 8 dereferenceable(16) %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #0 align 2 {
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca %"struct.std::pair", align 4
  %10 = alloca %"struct.std::pair", align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  store i32 %3, ptr %8, align 4, !tbaa !9
  %11 = load ptr, ptr %5, align 8
  %12 = getelementptr inbounds %class.Graph, ptr %11, i32 0, i32 1
  %13 = load ptr, ptr %12, align 8, !tbaa !11
  %14 = load i32, ptr %6, align 4, !tbaa !9
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds %"class.std::__cxx11::list", ptr %13, i64 %15
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  %17 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %7, ptr noundef nonnull align 4 dereferenceable(4) %8)
  store i64 %17, ptr %9, align 4
  call void @_ZNSt7__cxx114listISt4pairIiiESaIS2_EE9push_backEOS2_(ptr noundef nonnull align 8 dereferenceable(24) %16, ptr noundef nonnull align 4 dereferenceable(8) %9)
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  %18 = getelementptr inbounds %class.Graph, ptr %11, i32 0, i32 1
  %19 = load ptr, ptr %18, align 8, !tbaa !11
  %20 = load i32, ptr %7, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds %"class.std::__cxx11::list", ptr %19, i64 %21
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #2
  %23 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %8)
  store i64 %23, ptr %10, align 4
  call void @_ZNSt7__cxx114listISt4pairIiiESaIS2_EE9push_backEOS2_(ptr noundef nonnull align 8 dereferenceable(24) %22, ptr noundef nonnull align 4 dereferenceable(8) %10)
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #2
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx114listISt4pairIiiESaIS2_EE9push_backEOS2_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) #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 uwtable
declare dso_local i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #0

; 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 = { 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, !6, i64 8}
!12 = !{!"_ZTS5Graph", !10, i64 0, !6, i64 8}


; 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"

%"struct.std::pair" = type { i32, i32 }
%"class.std::__cxx11::list" = type { %"class.std::__cxx11::_List_base" }
%"class.std::__cxx11::_List_base" = type { %"struct.std::__cxx11::_List_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_List_impl" }
%"struct.std::__cxx11::_List_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_List_impl" = type { %"struct.std::__detail::_List_node_header" }
%"struct.std::__detail::_List_node_header" = type { %"struct.std::__detail::_List_node_base", i64 }
%"struct.std::__detail::_List_node_base" = type { ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN5Graph7addEdgeEiii(ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 align 2 {
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca %"struct.std::pair", align 8
  %9 = alloca %"struct.std::pair", align 8
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  store i32 %3, ptr %7, align 4, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %0, i64 8
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  %12 = sext i32 %1 to i64
  %13 = getelementptr inbounds %"class.std::__cxx11::list", ptr %11, i64 %12
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %8) #2
  %14 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %7)
  store i64 %14, ptr %8, align 8
  call void @_ZNSt7__cxx114listISt4pairIiiESaIS2_EE9push_backEOS2_(ptr noundef nonnull align 8 dereferenceable(24) %13, ptr noundef nonnull align 4 dereferenceable(8) %8)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %8) #2
  %15 = load ptr, ptr %10, align 8, !tbaa !9
  %16 = load i32, ptr %6, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds %"class.std::__cxx11::list", ptr %15, i64 %17
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %9) #2
  %19 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %5, ptr noundef nonnull align 4 dereferenceable(4) %7)
  store i64 %19, ptr %9, align 8
  call void @_ZNSt7__cxx114listISt4pairIiiESaIS2_EE9push_backEOS2_(ptr noundef nonnull align 8 dereferenceable(24) %18, ptr noundef nonnull align 4 dereferenceable(8) %9)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %9) #2
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt7__cxx114listISt4pairIiiESaIS2_EE9push_backEOS2_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #0 align 2

; 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 uwtable
declare dso_local i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0

; 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 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 = { 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, !11, i64 8}
!10 = !{!"_ZTS5Graph", !6, i64 0, !11, i64 8}
!11 = !{!"any pointer", !7, i64 0}


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