; LLVM IR from div-bargali/Data-Structures-and-Algorithms :: C++/Data-Structures/Heap/Heap (Kth Largest Element in a Stream ) C++/KthLargestEl_0de60988 (ZN7MinHeap10extractMinEv)

; 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.MinHeap = type { ptr, i32, i32 }

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN7MinHeap10MinHeapifyEi(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) #1 align 2

; 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 i32 @_ZN7MinHeap10extractMinEv(ptr noundef nonnull align 8 dereferenceable(16) %0) #1 align 2 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  %5 = load ptr, ptr %3, align 8
  %6 = getelementptr inbounds %class.MinHeap, ptr %5, i32 0, i32 2
  %7 = load i32, ptr %6, align 4, !tbaa !9
  %8 = icmp eq i32 %7, 0
  br i1 %8, label %9, label %10

9:                                                ; preds = %1
  store i32 2147483647, ptr %2, align 4
  br label %35

10:                                               ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  %11 = getelementptr inbounds %class.MinHeap, ptr %5, i32 0, i32 0
  %12 = load ptr, ptr %11, align 8, !tbaa !12
  %13 = getelementptr inbounds i32, ptr %12, i64 0
  %14 = load i32, ptr %13, align 4, !tbaa !13
  store i32 %14, ptr %4, align 4, !tbaa !13
  %15 = getelementptr inbounds %class.MinHeap, ptr %5, i32 0, i32 2
  %16 = load i32, ptr %15, align 4, !tbaa !9
  %17 = icmp sgt i32 %16, 1
  br i1 %17, label %18, label %30

18:                                               ; preds = %10
  %19 = getelementptr inbounds %class.MinHeap, ptr %5, i32 0, i32 0
  %20 = load ptr, ptr %19, align 8, !tbaa !12
  %21 = getelementptr inbounds %class.MinHeap, ptr %5, i32 0, i32 2
  %22 = load i32, ptr %21, align 4, !tbaa !9
  %23 = sub nsw i32 %22, 1
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds i32, ptr %20, i64 %24
  %26 = load i32, ptr %25, align 4, !tbaa !13
  %27 = getelementptr inbounds %class.MinHeap, ptr %5, i32 0, i32 0
  %28 = load ptr, ptr %27, align 8, !tbaa !12
  %29 = getelementptr inbounds i32, ptr %28, i64 0
  store i32 %26, ptr %29, align 4, !tbaa !13
  call void @_ZN7MinHeap10MinHeapifyEi(ptr noundef nonnull align 8 dereferenceable(16) %5, i32 noundef 0)
  br label %30

30:                                               ; preds = %18, %10
  %31 = getelementptr inbounds %class.MinHeap, ptr %5, i32 0, i32 2
  %32 = load i32, ptr %31, align 4, !tbaa !9
  %33 = add nsw i32 %32, -1
  store i32 %33, ptr %31, align 4, !tbaa !9
  %34 = load i32, ptr %4, align 4, !tbaa !13
  store i32 %34, ptr %2, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  br label %35

35:                                               ; preds = %30, %9
  %36 = load i32, ptr %2, align 4
  ret i32 %36
}

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, !11, i64 12}
!10 = !{!"_ZTS7MinHeap", !6, i64 0, !11, i64 8, !11, i64 12}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !6, i64 0}
!13 = !{!11, !11, i64 0}


; 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 uwtable
declare dso_local void @_ZN7MinHeap10MinHeapifyEi(ptr noundef nonnull align 8 dereferenceable(16), i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN7MinHeap10extractMinEv(ptr noundef nonnull align 8 dereferenceable(16) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 12
  %3 = load i32, ptr %2, align 4, !tbaa !5
  %4 = icmp eq i32 %3, 0
  br i1 %4, label %17, label %5

5:                                                ; preds = %1
  %6 = load ptr, ptr %0, align 8, !tbaa !11
  %7 = load i32, ptr %6, align 4, !tbaa !12
  %8 = icmp sgt i32 %3, 1
  br i1 %8, label %9, label %14

9:                                                ; preds = %5
  %10 = zext nneg i32 %3 to i64
  %11 = getelementptr i32, ptr %6, i64 %10
  %12 = getelementptr i8, ptr %11, i64 -4
  %13 = load i32, ptr %12, align 4, !tbaa !12
  store i32 %13, ptr %6, align 4, !tbaa !12
  tail call void @_ZN7MinHeap10MinHeapifyEi(ptr noundef nonnull align 8 dereferenceable(16) %0, i32 noundef 0)
  %.pre = load i32, ptr %2, align 4, !tbaa !5
  br label %14

14:                                               ; preds = %9, %5
  %15 = phi i32 [ %.pre, %9 ], [ %3, %5 ]
  %16 = add nsw i32 %15, -1
  store i32 %16, ptr %2, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %1, %14
  %.0 = phi i32 [ %7, %14 ], [ 2147483647, %1 ]
  ret i32 %.0
}

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" }

!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, !10, i64 12}
!6 = !{!"_ZTS7MinHeap", !7, i64 0, !10, i64 8, !10, i64 12}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!10, !10, i64 0}


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