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

; 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.HashNode = type { i32, i32 }

@hashTable = external dso_local global [10 x %struct.HashNode], align 16

; 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: nounwind uwtable
declare dso_local i32 @getHashAddress(i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @insert(i32 noundef %0) #1 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = call i32 @getHashAddress(i32 noundef %6)
  store i32 %7, ptr %4, align 4, !tbaa !5
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [10 x %struct.HashNode], ptr @hashTable, i64 0, i64 %9
  %11 = getelementptr inbounds %struct.HashNode, ptr %10, i32 0, i32 1
  %12 = load i32, ptr %11, align 4, !tbaa !9
  %13 = icmp eq i32 %12, 1
  br i1 %13, label %14, label %24

14:                                               ; preds = %1
  %15 = load i32, ptr %3, align 4, !tbaa !5
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [10 x %struct.HashNode], ptr @hashTable, i64 0, i64 %17
  %19 = getelementptr inbounds %struct.HashNode, ptr %18, i32 0, i32 0
  store i32 %15, ptr %19, align 8, !tbaa !11
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [10 x %struct.HashNode], ptr @hashTable, i64 0, i64 %21
  %23 = getelementptr inbounds %struct.HashNode, ptr %22, i32 0, i32 1
  store i32 0, ptr %23, align 4, !tbaa !9
  br label %54

24:                                               ; preds = %1
  br label %25

25:                                               ; preds = %37, %24
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds [10 x %struct.HashNode], ptr @hashTable, i64 0, i64 %27
  %29 = getelementptr inbounds %struct.HashNode, ptr %28, i32 0, i32 1
  %30 = load i32, ptr %29, align 4, !tbaa !9
  %31 = icmp eq i32 %30, 0
  br i1 %31, label %32, label %35

32:                                               ; preds = %25
  %33 = load i32, ptr %4, align 4, !tbaa !5
  %34 = icmp slt i32 %33, 10
  br label %35

35:                                               ; preds = %32, %25
  %36 = phi i1 [ false, %25 ], [ %34, %32 ]
  br i1 %36, label %37, label %40

37:                                               ; preds = %35
  %38 = load i32, ptr %4, align 4, !tbaa !5
  %39 = add nsw i32 %38, 1
  store i32 %39, ptr %4, align 4, !tbaa !5
  br label %25, !llvm.loop !12

40:                                               ; preds = %35
  %41 = load i32, ptr %4, align 4, !tbaa !5
  %42 = icmp eq i32 %41, 10
  br i1 %42, label %43, label %44

43:                                               ; preds = %40
  store i32 -1, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %55

44:                                               ; preds = %40
  %45 = load i32, ptr %3, align 4, !tbaa !5
  %46 = load i32, ptr %4, align 4, !tbaa !5
  %47 = sext i32 %46 to i64
  %48 = getelementptr inbounds [10 x %struct.HashNode], ptr @hashTable, i64 0, i64 %47
  %49 = getelementptr inbounds %struct.HashNode, ptr %48, i32 0, i32 0
  store i32 %45, ptr %49, align 8, !tbaa !11
  %50 = load i32, ptr %4, align 4, !tbaa !5
  %51 = sext i32 %50 to i64
  %52 = getelementptr inbounds [10 x %struct.HashNode], ptr @hashTable, i64 0, i64 %51
  %53 = getelementptr inbounds %struct.HashNode, ptr %52, i32 0, i32 1
  store i32 0, ptr %53, align 4, !tbaa !9
  br label %54

54:                                               ; preds = %44, %14
  store i32 0, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %55

55:                                               ; preds = %54, %43
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  %56 = load i32, ptr %2, align 4
  ret i32 %56
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !6, i64 4}
!10 = !{!"HashNode", !6, i64 0, !6, i64 4}
!11 = !{!10, !6, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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"

%struct.HashNode = type { i32, i32 }

@hashTable = external dso_local local_unnamed_addr global [10 x %struct.HashNode], align 16

; Function Attrs: nounwind uwtable
declare dso_local i32 @getHashAddress(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1, 1) i32 @insert(i32 noundef %0) local_unnamed_addr #0 {
  %2 = tail call i32 @getHashAddress(i32 noundef %0)
  %3 = sext i32 %2 to i64
  %4 = getelementptr inbounds [10 x %struct.HashNode], ptr @hashTable, i64 0, i64 %3
  %5 = getelementptr inbounds i8, ptr %4, i64 4
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %7 = icmp eq i32 %6, 1
  br i1 %7, label %.sink.split, label %.preheader

.preheader:                                       ; preds = %1, %.preheader
  %indvars.iv = phi i64 [ %indvars.iv.next, %.preheader ], [ %3, %1 ]
  %8 = getelementptr inbounds [10 x %struct.HashNode], ptr @hashTable, i64 0, i64 %indvars.iv
  %9 = getelementptr inbounds i8, ptr %8, i64 4
  %10 = load i32, ptr %9, align 4, !tbaa !5
  %11 = icmp eq i32 %10, 0
  %12 = icmp slt i64 %indvars.iv, 10
  %13 = and i1 %12, %11
  %indvars.iv.next = add nsw i64 %indvars.iv, 1
  br i1 %13, label %.preheader, label %14, !llvm.loop !10

14:                                               ; preds = %.preheader
  %15 = getelementptr inbounds i8, ptr %8, i64 4
  %16 = icmp eq i64 %indvars.iv, 10
  br i1 %16, label %17, label %.sink.split

.sink.split:                                      ; preds = %14, %1
  %.sink19 = phi ptr [ %4, %1 ], [ %8, %14 ]
  %.sink = phi ptr [ %5, %1 ], [ %15, %14 ]
  store i32 %0, ptr %.sink19, align 8, !tbaa !12
  store i32 0, ptr %.sink, align 4, !tbaa !5
  br label %17

17:                                               ; preds = %.sink.split, %14
  %.013 = phi i32 [ -1, %14 ], [ 0, %.sink.split ]
  ret i32 %.013
}

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" }

!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 4}
!6 = !{!"HashNode", !7, i64 0, !7, i64 4}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = !{!6, !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass