; LLVM IR from JessonYue/LeetCodeLearning :: BaseDataStructure/queue (PriorityQueue)

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

@.str = external hidden unnamed_addr constant [33 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [44 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [45 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local ptr @init(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #5
  %4 = load i32, ptr %2, align 4, !tbaa !5
  %5 = icmp slt i32 %4, 10
  br i1 %5, label %6, label %8

6:                                                ; preds = %1
  %7 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  call void @exit(i32 noundef -1) #6
  unreachable

8:                                                ; preds = %1
  %9 = call noalias ptr @malloc(i64 noundef 16) #7
  store ptr %9, ptr %3, align 8, !tbaa !9
  %10 = load ptr, ptr %3, align 8, !tbaa !9
  %11 = icmp eq ptr %10, null
  br i1 %11, label %12, label %14

12:                                               ; preds = %8
  %13 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  call void @exit(i32 noundef -1) #6
  unreachable

14:                                               ; preds = %8
  %15 = load i32, ptr %2, align 4, !tbaa !5
  %16 = add nsw i32 %15, 1
  %17 = sext i32 %16 to i64
  %18 = mul i64 %17, 4
  %19 = call noalias ptr @malloc(i64 noundef %18) #7
  %20 = load ptr, ptr %3, align 8, !tbaa !9
  %21 = getelementptr inbounds %struct.HeapStruct, ptr %20, i32 0, i32 2
  store ptr %19, ptr %21, align 8, !tbaa !11
  %22 = load ptr, ptr %3, align 8, !tbaa !9
  %23 = getelementptr inbounds %struct.HeapStruct, ptr %22, i32 0, i32 2
  %24 = load ptr, ptr %23, align 8, !tbaa !11
  %25 = icmp eq ptr %24, null
  br i1 %25, label %26, label %28

26:                                               ; preds = %14
  %27 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  call void @exit(i32 noundef -1) #6
  unreachable

28:                                               ; preds = %14
  %29 = load i32, ptr %2, align 4, !tbaa !5
  %30 = load ptr, ptr %3, align 8, !tbaa !9
  %31 = getelementptr inbounds %struct.HeapStruct, ptr %30, i32 0, i32 0
  store i32 %29, ptr %31, align 8, !tbaa !13
  %32 = load ptr, ptr %3, align 8, !tbaa !9
  %33 = getelementptr inbounds %struct.HeapStruct, ptr %32, i32 0, i32 1
  store i32 0, ptr %33, align 4, !tbaa !14
  %34 = load ptr, ptr %3, align 8, !tbaa !9
  %35 = getelementptr inbounds %struct.HeapStruct, ptr %34, i32 0, i32 2
  %36 = load ptr, ptr %35, align 8, !tbaa !11
  %37 = getelementptr inbounds i32, ptr %36, i64 0
  store i32 -32767, ptr %37, align 4, !tbaa !5
  %38 = load ptr, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #5
  ret ptr %38
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @printf(ptr noundef, ...) #2

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #3

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 #3 = { noreturn nounwind "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 allocsize(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 #5 = { nounwind }
attributes #6 = { noreturn nounwind }
attributes #7 = { nounwind allocsize(0) }

!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/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !10, i64 8}
!12 = !{!"HeapStruct", !6, i64 0, !6, i64 4, !10, i64 8}
!13 = !{!12, !6, i64 0}
!14 = !{!12, !6, 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"

@.str = external hidden unnamed_addr constant [33 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [44 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [45 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noalias noundef ptr @init(i32 noundef %0) local_unnamed_addr #0 {
  %2 = icmp slt i32 %0, 10
  br i1 %2, label %3, label %5

3:                                                ; preds = %1
  %4 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  tail call void @exit(i32 noundef -1) #4
  unreachable

5:                                                ; preds = %1
  %6 = tail call noalias dereferenceable_or_null(16) ptr @malloc(i64 noundef 16) #5
  %7 = icmp eq ptr %6, null
  br i1 %7, label %8, label %10

8:                                                ; preds = %5
  %9 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  tail call void @exit(i32 noundef -1) #4
  unreachable

10:                                               ; preds = %5
  %11 = add nuw nsw i32 %0, 1
  %12 = zext nneg i32 %11 to i64
  %13 = shl nuw nsw i64 %12, 2
  %14 = tail call noalias ptr @malloc(i64 noundef %13) #5
  %15 = getelementptr inbounds i8, ptr %6, i64 8
  store ptr %14, ptr %15, align 8, !tbaa !5
  %16 = icmp eq ptr %14, null
  br i1 %16, label %17, label %19

17:                                               ; preds = %10
  %18 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  tail call void @exit(i32 noundef -1) #4
  unreachable

19:                                               ; preds = %10
  store i32 %0, ptr %6, align 8, !tbaa !11
  %20 = getelementptr inbounds i8, ptr %6, i64 4
  store i32 0, ptr %20, align 4, !tbaa !12
  store i32 -32767, ptr %14, align 4, !tbaa !13
  ret ptr %6
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #3

attributes #0 = { 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 #1 = { nofree nounwind "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 = { noreturn nounwind "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 #3 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { noreturn nounwind }
attributes #5 = { nounwind allocsize(0) }

!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 8}
!6 = !{!"HeapStruct", !7, i64 0, !7, i64 4, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!6, !7, i64 4}
!13 = !{!7, !7, i64 0}


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