; LLVM IR from ritikbanger/Hacktoberfest2022-DSA :: 16. Heap/FibonacciHeap.ll (ZN13FibonacciHeap4FindEP4nodei)

; 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.node = type { i32, i32, ptr, ptr, ptr, ptr, i8, i8 }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @_ZN13FibonacciHeap4FindEP4nodei(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef %1, i32 noundef %2) #1 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !9
  %11 = load ptr, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %12 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %12, ptr %8, align 8, !tbaa !5
  %13 = load ptr, ptr %8, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.node, ptr %13, i32 0, i32 7
  store i8 89, ptr %14, align 1, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #2
  store ptr null, ptr %9, align 8, !tbaa !5
  %15 = load ptr, ptr %8, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.node, ptr %15, i32 0, i32 0
  %17 = load i32, ptr %16, align 8, !tbaa !13
  %18 = load i32, ptr %7, align 4, !tbaa !9
  %19 = icmp eq i32 %17, %18
  br i1 %19, label %20, label %25

20:                                               ; preds = %3
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %21, ptr %9, align 8, !tbaa !5
  %22 = load ptr, ptr %8, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.node, ptr %22, i32 0, i32 7
  store i8 78, ptr %23, align 1, !tbaa !11
  %24 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %24, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %58

25:                                               ; preds = %3
  %26 = load ptr, ptr %9, align 8, !tbaa !5
  %27 = icmp eq ptr %26, null
  br i1 %27, label %28, label %54

28:                                               ; preds = %25
  %29 = load ptr, ptr %8, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.node, ptr %29, i32 0, i32 3
  %31 = load ptr, ptr %30, align 8, !tbaa !14
  %32 = icmp ne ptr %31, null
  br i1 %32, label %33, label %39

33:                                               ; preds = %28
  %34 = load ptr, ptr %8, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.node, ptr %34, i32 0, i32 3
  %36 = load ptr, ptr %35, align 8, !tbaa !14
  %37 = load i32, ptr %7, align 4, !tbaa !9
  %38 = call noundef ptr @_ZN13FibonacciHeap4FindEP4nodei(ptr noundef nonnull align 8 dereferenceable(16) %11, ptr noundef %36, i32 noundef %37)
  store ptr %38, ptr %9, align 8, !tbaa !5
  br label %39

39:                                               ; preds = %33, %28
  %40 = load ptr, ptr %8, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.node, ptr %40, i32 0, i32 5
  %42 = load ptr, ptr %41, align 8, !tbaa !15
  %43 = getelementptr inbounds %struct.node, ptr %42, i32 0, i32 7
  %44 = load i8, ptr %43, align 1, !tbaa !11
  %45 = sext i8 %44 to i32
  %46 = icmp ne i32 %45, 89
  br i1 %46, label %47, label %53

47:                                               ; preds = %39
  %48 = load ptr, ptr %8, align 8, !tbaa !5
  %49 = getelementptr inbounds %struct.node, ptr %48, i32 0, i32 5
  %50 = load ptr, ptr %49, align 8, !tbaa !15
  %51 = load i32, ptr %7, align 4, !tbaa !9
  %52 = call noundef ptr @_ZN13FibonacciHeap4FindEP4nodei(ptr noundef nonnull align 8 dereferenceable(16) %11, ptr noundef %50, i32 noundef %51)
  store ptr %52, ptr %9, align 8, !tbaa !5
  br label %53

53:                                               ; preds = %47, %39
  br label %54

54:                                               ; preds = %53, %25
  %55 = load ptr, ptr %8, align 8, !tbaa !5
  %56 = getelementptr inbounds %struct.node, ptr %55, i32 0, i32 7
  store i8 78, ptr %56, align 1, !tbaa !11
  %57 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %57, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %58

58:                                               ; preds = %54, %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  %59 = load ptr, ptr %4, align 8
  ret ptr %59
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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, !7, i64 41}
!12 = !{!"_ZTS4node", !10, i64 0, !10, i64 4, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !7, i64 40, !7, i64 41}
!13 = !{!12, !10, i64 0}
!14 = !{!12, !6, i64 16}
!15 = !{!12, !6, i64 32}


; 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 nofree nosync nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local noundef ptr @_ZN13FibonacciHeap4FindEP4nodei(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef %1, i32 noundef %2) local_unnamed_addr #0 align 2 {
  %4 = getelementptr inbounds i8, ptr %1, i64 41
  store i8 89, ptr %4, align 1, !tbaa !5
  %5 = load i32, ptr %1, align 8, !tbaa !11
  %6 = icmp eq i32 %5, %2
  br i1 %6, label %19, label %7

7:                                                ; preds = %3
  %8 = getelementptr inbounds i8, ptr %1, i64 16
  %9 = load ptr, ptr %8, align 8, !tbaa !12
  %.not = icmp eq ptr %9, null
  br i1 %.not, label %12, label %10

10:                                               ; preds = %7
  %11 = tail call noundef ptr @_ZN13FibonacciHeap4FindEP4nodei(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef nonnull %9, i32 noundef %2)
  br label %12

12:                                               ; preds = %10, %7
  %.0 = phi ptr [ %11, %10 ], [ null, %7 ]
  %13 = getelementptr inbounds i8, ptr %1, i64 32
  %14 = load ptr, ptr %13, align 8, !tbaa !13
  %15 = getelementptr inbounds i8, ptr %14, i64 41
  %16 = load i8, ptr %15, align 1, !tbaa !5
  %.not20 = icmp eq i8 %16, 89
  br i1 %.not20, label %19, label %17

17:                                               ; preds = %12
  %18 = tail call noundef ptr @_ZN13FibonacciHeap4FindEP4nodei(ptr noundef nonnull align 8 dereferenceable(16) %0, ptr noundef nonnull %14, i32 noundef %2)
  br label %19

19:                                               ; preds = %17, %12, %3
  %.017 = phi ptr [ %1, %3 ], [ %18, %17 ], [ %.0, %12 ]
  store i8 78, ptr %4, align 1, !tbaa !5
  ret ptr %.017
}

attributes #0 = { mustprogress nofree nosync nounwind memory(readwrite, inaccessiblemem: none) 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, !8, i64 41}
!6 = !{!"_ZTS4node", !7, i64 0, !7, i64 4, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32, !8, i64 40, !8, i64 41}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!6, !10, i64 16}
!13 = !{!6, !10, i64 32}


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