; LLVM IR from AnneLivia/Competitive-Programming :: Data Structures/Hash Table/Hash Table (Implemented With Struct) (hashTable)

; 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 = type { ptr, i32, i32 }

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef ptr @_Z15createHashTablei(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %5 = call noalias ptr @malloc(i64 noundef 112) #5
  store ptr %5, ptr %3, align 8, !tbaa !9
  %6 = load ptr, ptr %3, align 8, !tbaa !9
  %7 = icmp ne ptr %6, null
  br i1 %7, label %8, label %44

8:                                                ; preds = %1
  %9 = load ptr, ptr %3, align 8, !tbaa !9
  %10 = getelementptr inbounds %struct.Hash, ptr %9, i32 0, i32 2
  store i32 0, ptr %10, align 4, !tbaa !11
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = load ptr, ptr %3, align 8, !tbaa !9
  %13 = getelementptr inbounds %struct.Hash, ptr %12, i32 0, i32 1
  store i32 %11, ptr %13, align 8, !tbaa !13
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = mul i64 8, %15
  %17 = call noalias ptr @malloc(i64 noundef %16) #5
  %18 = load ptr, ptr %3, align 8, !tbaa !9
  %19 = getelementptr inbounds %struct.Hash, ptr %18, i32 0, i32 0
  store ptr %17, ptr %19, align 8, !tbaa !14
  %20 = load ptr, ptr %3, align 8, !tbaa !9
  %21 = getelementptr inbounds %struct.Hash, ptr %20, i32 0, i32 0
  %22 = load ptr, ptr %21, align 8, !tbaa !14
  %23 = icmp ne ptr %22, null
  br i1 %23, label %24, label %41

24:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %25

25:                                               ; preds = %37, %24
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = load i32, ptr %2, align 4, !tbaa !5
  %28 = icmp slt i32 %26, %27
  br i1 %28, label %30, label %29

29:                                               ; preds = %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  br label %40

30:                                               ; preds = %25
  %31 = load ptr, ptr %3, align 8, !tbaa !9
  %32 = getelementptr inbounds %struct.Hash, ptr %31, i32 0, i32 0
  %33 = load ptr, ptr %32, align 8, !tbaa !14
  %34 = load i32, ptr %4, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds ptr, ptr %33, i64 %35
  store ptr null, ptr %36, align 8, !tbaa !9
  br label %37

37:                                               ; preds = %30
  %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 !15

40:                                               ; preds = %29
  br label %43

41:                                               ; preds = %8
  %42 = load ptr, ptr %3, align 8, !tbaa !9
  call void @free(ptr noundef %42) #4
  store ptr null, ptr %3, align 8, !tbaa !9
  br label %43

43:                                               ; preds = %41, %40
  br label %44

44:                                               ; preds = %43, %1
  %45 = load ptr, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret ptr %45
}

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

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #2

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

; Function Attrs: nounwind
declare void @free(ptr noundef) #3

attributes #0 = { mustprogress 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 = { 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 #3 = { 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 }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !6, i64 12}
!12 = !{!"_ZTS4Hash", !10, i64 0, !6, i64 8, !6, i64 12}
!13 = !{!12, !6, i64 8}
!14 = !{!12, !10, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"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: mustprogress nounwind willreturn memory(readwrite, argmem: none) uwtable
define dso_local noalias noundef ptr @_Z15createHashTablei(i32 noundef %0) local_unnamed_addr #0 {
  %2 = tail call noalias dereferenceable_or_null(112) ptr @malloc(i64 noundef 112) #4
  %.not = icmp eq ptr %2, null
  br i1 %.not, label %.loopexit, label %3

3:                                                ; preds = %1
  %4 = getelementptr inbounds i8, ptr %2, i64 12
  store i32 0, ptr %4, align 4, !tbaa !5
  %5 = getelementptr inbounds i8, ptr %2, i64 8
  store i32 %0, ptr %5, align 8, !tbaa !11
  %6 = sext i32 %0 to i64
  %7 = shl nsw i64 %6, 3
  %8 = tail call noalias ptr @malloc(i64 noundef %7) #4
  store ptr %8, ptr %2, align 8, !tbaa !12
  %.not15 = icmp eq ptr %8, null
  br i1 %.not15, label %12, label %.preheader

.preheader:                                       ; preds = %3
  %9 = icmp sgt i32 %0, 0
  br i1 %9, label %.lr.ph.preheader, label %.loopexit

.lr.ph.preheader:                                 ; preds = %.preheader
  %10 = zext nneg i32 %0 to i64
  %11 = shl nuw nsw i64 %10, 3
  tail call void @llvm.memset.p0.i64(ptr nonnull align 8 %8, i8 0, i64 %11, i1 false), !tbaa !13
  br label %.loopexit

12:                                               ; preds = %3
  tail call void @free(ptr noundef nonnull %2) #5
  br label %.loopexit

.loopexit:                                        ; preds = %.lr.ph.preheader, %.preheader, %12, %1
  %.013 = phi ptr [ null, %12 ], [ null, %1 ], [ %2, %.preheader ], [ %2, %.lr.ph.preheader ]
  ret ptr %.013
}

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

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #3

attributes #0 = { mustprogress nounwind willreturn memory(readwrite, argmem: 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" }
attributes #1 = { 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 #2 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, 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 #3 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #4 = { nounwind allocsize(0) }
attributes #5 = { 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, !10, i64 12}
!6 = !{!"_ZTS4Hash", !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, !10, i64 8}
!12 = !{!6, !7, i64 0}
!13 = !{!7, !7, i64 0}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopIdiomRecognizePass,LoopRotatePass,LoopSimplifyPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass