; LLVM IR from Dev-XYS/Algorithms :: Fibonacci-Heap.ll (ZN13FibonacciHeap7_M_linkEPNS_4nodeES1_)

; 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.FibonacciHeap::node" = type <{ ptr, ptr, ptr, ptr, i32, i32, i8, [7 x i8] }>

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN13FibonacciHeap12_M_insert_toEPNS_4nodeES1_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef, ptr noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN13FibonacciHeap24_M_remove_from_root_listEPNS_4nodeE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN13FibonacciHeap7_M_linkEPNS_4nodeES1_(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef %1, ptr noundef %2) #0 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  %7 = load ptr, ptr %4, align 8
  %8 = load ptr, ptr %5, align 8, !tbaa !5
  call void @_ZN13FibonacciHeap24_M_remove_from_root_listEPNS_4nodeE(ptr noundef nonnull align 8 dereferenceable(16) %7, ptr noundef %8)
  %9 = load ptr, ptr %6, align 8, !tbaa !5
  %10 = getelementptr inbounds %"struct.FibonacciHeap::node", ptr %9, i32 0, i32 0
  %11 = load ptr, ptr %10, align 8, !tbaa !9
  %12 = icmp eq ptr %11, null
  br i1 %12, label %13, label %25

13:                                               ; preds = %3
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = getelementptr inbounds %"struct.FibonacciHeap::node", ptr %15, i32 0, i32 0
  store ptr %14, ptr %16, align 8, !tbaa !9
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = getelementptr inbounds %"struct.FibonacciHeap::node", ptr %18, i32 0, i32 1
  store ptr %17, ptr %19, align 8, !tbaa !13
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds %"struct.FibonacciHeap::node", ptr %21, i32 0, i32 3
  store ptr %20, ptr %22, align 8, !tbaa !14
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = getelementptr inbounds %"struct.FibonacciHeap::node", ptr %23, i32 0, i32 2
  store ptr %20, ptr %24, align 8, !tbaa !15
  br label %33

25:                                               ; preds = %3
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = load ptr, ptr %6, align 8, !tbaa !5
  %28 = getelementptr inbounds %"struct.FibonacciHeap::node", ptr %27, i32 0, i32 0
  %29 = load ptr, ptr %28, align 8, !tbaa !9
  call void @_ZN13FibonacciHeap12_M_insert_toEPNS_4nodeES1_(ptr noundef nonnull align 8 dereferenceable(16) %7, ptr noundef %26, ptr noundef %29)
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  %31 = load ptr, ptr %5, align 8, !tbaa !5
  %32 = getelementptr inbounds %"struct.FibonacciHeap::node", ptr %31, i32 0, i32 1
  store ptr %30, ptr %32, align 8, !tbaa !13
  br label %33

33:                                               ; preds = %25, %13
  ret void
}

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" }

!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, !6, i64 0}
!10 = !{!"_ZTSN13FibonacciHeap4nodeE", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !11, i64 32, !11, i64 36, !12, i64 40}
!11 = !{!"int", !7, i64 0}
!12 = !{!"bool", !7, i64 0}
!13 = !{!10, !6, i64 8}
!14 = !{!10, !6, i64 24}
!15 = !{!10, !6, i64 16}


; 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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN13FibonacciHeap12_M_insert_toEPNS_4nodeES1_(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef, ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN13FibonacciHeap24_M_remove_from_root_listEPNS_4nodeE(ptr noundef nonnull align 8 dereferenceable(16), ptr noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN13FibonacciHeap7_M_linkEPNS_4nodeES1_(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #0 align 2 {
  tail call void @_ZN13FibonacciHeap24_M_remove_from_root_listEPNS_4nodeE(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef %1)
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = icmp eq ptr %4, null
  br i1 %5, label %6, label %9

6:                                                ; preds = %3
  store ptr %1, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %1, i64 24
  store ptr %1, ptr %7, align 8, !tbaa !12
  %8 = getelementptr inbounds i8, ptr %1, i64 16
  store ptr %1, ptr %8, align 8, !tbaa !13
  br label %10

9:                                                ; preds = %3
  tail call void @_ZN13FibonacciHeap12_M_insert_toEPNS_4nodeES1_(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef %1, ptr noundef nonnull %4)
  br label %10

10:                                               ; preds = %9, %6
  %11 = getelementptr inbounds i8, ptr %1, i64 8
  store ptr %2, ptr %11, align 8
  ret void
}

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" }

!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 = !{!"_ZTSN13FibonacciHeap4nodeE", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !10, i64 32, !10, i64 36, !11, i64 40}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"bool", !8, i64 0}
!12 = !{!6, !7, i64 24}
!13 = !{!6, !7, i64 16}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InstCombinePass,MergedLoadStoreMotionPass,SROAPass,TailCallElimPass