; LLVM IR from JessonYue/LeetCodeLearning :: Array/linchuanxin/homework/homework_0629_0705/linkedHash (LinkedListHash)

; 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._hash_node = type { i32, ptr }
%struct._hash_table = type { [6 x ptr] }

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

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

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @hash_addKey(ptr noundef %0, i32 noundef %1) #3 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = icmp eq ptr %10, null
  br i1 %11, label %12, label %13

12:                                               ; preds = %2
  store i1 false, ptr %3, align 1
  br label %72

13:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %14 = call noalias ptr @malloc(i64 noundef 16) #5
  store ptr %14, ptr %6, align 8, !tbaa !5
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = icmp eq ptr %15, null
  br i1 %16, label %17, label %18

17:                                               ; preds = %13
  store i1 false, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %71

18:                                               ; preds = %13
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  call void @llvm.memset.p0.i64(ptr align 8 %19, i8 0, i64 16, i1 false)
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct._hash_node, ptr %21, i32 0, i32 0
  store i32 %20, ptr %22, align 8, !tbaa !11
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct._hash_node, ptr %23, i32 0, i32 1
  store ptr null, ptr %24, align 8, !tbaa !13
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct._hash_table, ptr %25, i32 0, i32 0
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = srem i32 %27, 6
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [6 x ptr], ptr %26, i64 0, i64 %29
  %31 = load ptr, ptr %30, align 8, !tbaa !5
  %32 = icmp eq ptr %31, null
  br i1 %32, label %33, label %50

33:                                               ; preds = %18
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  %34 = call noalias ptr @malloc(i64 noundef 16) #5
  store ptr %34, ptr %8, align 8, !tbaa !5
  %35 = load ptr, ptr %8, align 8, !tbaa !5
  %36 = icmp eq ptr %35, null
  br i1 %36, label %37, label %38

37:                                               ; preds = %33
  store i1 false, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %47

38:                                               ; preds = %33
  %39 = load ptr, ptr %8, align 8, !tbaa !5
  call void @llvm.memset.p0.i64(ptr align 8 %39, i8 0, i64 16, i1 false)
  %40 = load ptr, ptr %8, align 8, !tbaa !5
  %41 = load ptr, ptr %4, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct._hash_table, ptr %41, i32 0, i32 0
  %43 = load i32, ptr %5, align 4, !tbaa !9
  %44 = srem i32 %43, 6
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds [6 x ptr], ptr %42, i64 0, i64 %45
  store ptr %40, ptr %46, align 8, !tbaa !5
  store i32 0, ptr %7, align 4
  br label %47

47:                                               ; preds = %38, %37
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  %48 = load i32, ptr %7, align 4
  switch i32 %48, label %71 [
    i32 0, label %49
  ]

49:                                               ; preds = %47
  br label %50

50:                                               ; preds = %49, %18
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  %51 = load ptr, ptr %4, align 8, !tbaa !5
  %52 = getelementptr inbounds %struct._hash_table, ptr %51, i32 0, i32 0
  %53 = load i32, ptr %5, align 4, !tbaa !9
  %54 = srem i32 %53, 6
  %55 = sext i32 %54 to i64
  %56 = getelementptr inbounds [6 x ptr], ptr %52, i64 0, i64 %55
  %57 = load ptr, ptr %56, align 8, !tbaa !5
  store ptr %57, ptr %9, align 8, !tbaa !5
  br label %58

58:                                               ; preds = %63, %50
  %59 = load ptr, ptr %9, align 8, !tbaa !5
  %60 = getelementptr inbounds %struct._hash_node, ptr %59, i32 0, i32 1
  %61 = load ptr, ptr %60, align 8, !tbaa !13
  %62 = icmp ne ptr %61, null
  br i1 %62, label %63, label %67

63:                                               ; preds = %58
  %64 = load ptr, ptr %9, align 8, !tbaa !5
  %65 = getelementptr inbounds %struct._hash_node, ptr %64, i32 0, i32 1
  %66 = load ptr, ptr %65, align 8, !tbaa !13
  store ptr %66, ptr %9, align 8, !tbaa !5
  br label %58, !llvm.loop !14

67:                                               ; preds = %58
  %68 = load ptr, ptr %6, align 8, !tbaa !5
  %69 = load ptr, ptr %9, align 8, !tbaa !5
  %70 = getelementptr inbounds %struct._hash_node, ptr %69, i32 0, i32 1
  store ptr %68, ptr %70, align 8, !tbaa !13
  store i1 true, ptr %3, align 1
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  br label %71

71:                                               ; preds = %67, %47, %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  br label %72

72:                                               ; preds = %71, %12
  %73 = load i1, ptr %3, align 1
  ret i1 %73
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { 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 #4 = { 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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_hash_node", !10, i64 0, !6, i64 8}
!13 = !{!12, !6, i64 8}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; 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: nofree nounwind uwtable
define dso_local noundef zeroext i1 @hash_addKey(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp eq ptr %0, null
  br i1 %3, label %.critedge, label %4

4:                                                ; preds = %2
  %calloc27 = tail call dereferenceable_or_null(16) ptr @calloc(i64 1, i64 16)
  %5 = icmp eq ptr %calloc27, null
  br i1 %5, label %.critedge, label %6

6:                                                ; preds = %4
  store i32 %1, ptr %calloc27, align 8, !tbaa !5
  %7 = srem i32 %1, 6
  %8 = sext i32 %7 to i64
  %9 = getelementptr inbounds [6 x ptr], ptr %0, i64 0, i64 %8
  %10 = load ptr, ptr %9, align 8, !tbaa !11
  %11 = icmp eq ptr %10, null
  br i1 %11, label %12, label %.preheader

12:                                               ; preds = %6
  %calloc = tail call dereferenceable_or_null(16) ptr @calloc(i64 1, i64 16)
  %.not = icmp eq ptr %calloc, null
  br i1 %.not, label %.critedge, label %13

13:                                               ; preds = %12
  store ptr %calloc, ptr %9, align 8, !tbaa !11
  br label %.preheader

.preheader:                                       ; preds = %13, %6
  %.0.ph = phi ptr [ %10, %6 ], [ %calloc, %13 ]
  br label %14

14:                                               ; preds = %.preheader, %14
  %.0 = phi ptr [ %16, %14 ], [ %.0.ph, %.preheader ]
  %15 = getelementptr inbounds i8, ptr %.0, i64 8
  %16 = load ptr, ptr %15, align 8, !tbaa !12
  %.not26 = icmp eq ptr %16, null
  br i1 %.not26, label %17, label %14, !llvm.loop !13

17:                                               ; preds = %14
  %18 = getelementptr inbounds i8, ptr %.0, i64 8
  store ptr %calloc27, ptr %18, align 8, !tbaa !12
  br label %.critedge

.critedge:                                        ; preds = %17, %4, %12, %2
  %.2 = phi i1 [ false, %2 ], [ true, %17 ], [ false, %4 ], [ false, %12 ]
  ret i1 %.2
}

; Function Attrs: nofree nounwind willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @calloc(i64 noundef, i64 noundef) local_unnamed_addr #1

attributes #0 = { nofree 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 willreturn allockind("alloc,zeroed") allocsize(0,1) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" }

!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 = !{!"_hash_node", !7, i64 0, !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 = !{!10, !10, i64 0}
!12 = !{!6, !10, i64 8}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass