; LLVM IR from DimitrisJim/leetcode_solutions :: C/Algorithms (1370)

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

; Function Attrs: nounwind uwtable
declare dso_local i32 @hf(i8 noundef signext) #0

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

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

; Function Attrs: nounwind uwtable
define dso_local ptr @tablet_new(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  store i32 521, ptr %4, align 4, !tbaa !5
  %6 = load i32, ptr %4, align 4, !tbaa !5
  %7 = sext i32 %6 to i64
  %8 = mul i64 %7, 8
  %9 = add i64 24, %8
  %10 = call noalias ptr @malloc(i64 noundef %9) #4
  store ptr %10, ptr %3, align 8, !tbaa !9
  %11 = load i32, ptr %4, align 4, !tbaa !5
  %12 = load ptr, ptr %3, align 8, !tbaa !9
  %13 = getelementptr inbounds %struct.tablet, ptr %12, i32 0, i32 0
  store i32 %11, ptr %13, align 8, !tbaa !11
  %14 = load ptr, ptr %3, align 8, !tbaa !9
  %15 = getelementptr inbounds %struct.tablet, ptr %14, i32 0, i32 2
  store ptr @hf, ptr %15, align 8, !tbaa !13
  %16 = load ptr, ptr %3, align 8, !tbaa !9
  %17 = getelementptr inbounds %struct.tablet, ptr %16, i32 0, i32 1
  store i32 0, ptr %17, align 4, !tbaa !14
  %18 = load ptr, ptr %3, align 8, !tbaa !9
  %19 = getelementptr inbounds %struct.tablet, ptr %18, i64 1
  %20 = load ptr, ptr %3, align 8, !tbaa !9
  %21 = getelementptr inbounds %struct.tablet, ptr %20, i32 0, i32 3
  store ptr %19, ptr %21, align 8, !tbaa !15
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %34, %1
  %23 = load i32, ptr %5, align 4, !tbaa !5
  %24 = load i32, ptr %4, align 4, !tbaa !5
  %25 = icmp ult i32 %23, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %22
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %37

27:                                               ; preds = %22
  %28 = load ptr, ptr %3, align 8, !tbaa !9
  %29 = getelementptr inbounds %struct.tablet, ptr %28, i32 0, i32 3
  %30 = load ptr, ptr %29, align 8, !tbaa !15
  %31 = load i32, ptr %5, align 4, !tbaa !5
  %32 = zext i32 %31 to i64
  %33 = getelementptr inbounds ptr, ptr %30, i64 %32
  store ptr null, ptr %33, align 8, !tbaa !9
  br label %34

34:                                               ; preds = %27
  %35 = load i32, ptr %5, align 4, !tbaa !5
  %36 = add i32 %35, 1
  store i32 %36, ptr %5, align 4, !tbaa !5
  br label %22, !llvm.loop !16

37:                                               ; preds = %26
  %38 = load ptr, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret ptr %38
}

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

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 = { 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 }
attributes #4 = { 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, !6, i64 0}
!12 = !{!"tablet", !6, i64 0, !6, i64 4, !10, i64 8, !10, i64 16}
!13 = !{!12, !10, i64 8}
!14 = !{!12, !6, i64 4}
!15 = !{!12, !10, i64 16}
!16 = distinct !{!16, !17}
!17 = !{!"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: nounwind uwtable
declare dso_local i32 @hf(i8 noundef signext) #0

; Function Attrs: nofree nounwind memory(readwrite, argmem: write) uwtable
define dso_local noundef ptr @tablet_new(i32 noundef %0) local_unnamed_addr #1 {
  %2 = tail call noalias dereferenceable_or_null(4192) ptr @malloc(i64 noundef 4192) #3
  store i32 521, ptr %2, align 8, !tbaa !5
  %3 = getelementptr inbounds i8, ptr %2, i64 8
  store ptr @hf, ptr %3, align 8, !tbaa !11
  %4 = getelementptr inbounds i8, ptr %2, i64 4
  store i32 0, ptr %4, align 4, !tbaa !12
  %5 = getelementptr inbounds i8, ptr %2, i64 24
  %6 = getelementptr inbounds i8, ptr %2, i64 16
  store ptr %5, ptr %6, align 8, !tbaa !13
  br label %8

7:                                                ; preds = %8
  ret ptr %2

8:                                                ; preds = %11, %1
  %indvars.iv = phi i64 [ 0, %1 ], [ %indvars.iv.next.3, %11 ]
  %9 = load ptr, ptr %6, align 8, !tbaa !13
  %10 = getelementptr inbounds ptr, ptr %9, i64 %indvars.iv
  store ptr null, ptr %10, align 8, !tbaa !14
  %exitcond.not = icmp eq i64 %indvars.iv, 520
  br i1 %exitcond.not, label %7, label %11, !llvm.loop !15

11:                                               ; preds = %8
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %12 = load ptr, ptr %6, align 8, !tbaa !13
  %13 = getelementptr inbounds ptr, ptr %12, i64 %indvars.iv.next
  store ptr null, ptr %13, align 8, !tbaa !14
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %14 = load ptr, ptr %6, align 8, !tbaa !13
  %15 = getelementptr inbounds ptr, ptr %14, i64 %indvars.iv.next.1
  store ptr null, ptr %15, align 8, !tbaa !14
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %16 = load ptr, ptr %6, align 8, !tbaa !13
  %17 = getelementptr inbounds ptr, ptr %16, i64 %indvars.iv.next.2
  store ptr null, ptr %17, align 8, !tbaa !14
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  br label %8
}

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #2

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 memory(readwrite, argmem: write) 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 = { 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 #3 = { 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, !7, i64 0}
!6 = !{!"tablet", !7, i64 0, !7, i64 4, !10, i64 8, !10, i64 16}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !7, i64 4}
!13 = !{!6, !10, i64 16}
!14 = !{!10, !10, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass