; LLVM IR from andreypudov/algorithms :: Core/Threads (PTData)

; 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.array_tag = type { ptr, i32, i32, %union.pthread_mutex_t }
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }

; 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
define dso_local void @array_resize(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = load ptr, ptr %6, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.array_tag, ptr %7, i32 0, i32 0
  %9 = load ptr, ptr %8, align 8, !tbaa !11
  %10 = load i32, ptr %4, align 4, !tbaa !9
  %11 = sext i32 %10 to i64
  %12 = mul i64 8, %11
  %13 = call ptr @realloc(ptr noundef %9, i64 noundef %12) #3
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = load ptr, ptr %14, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.array_tag, ptr %15, i32 0, i32 0
  store ptr %13, ptr %16, align 8, !tbaa !11
  %17 = load i32, ptr %4, align 4, !tbaa !9
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = load ptr, ptr %18, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.array_tag, ptr %19, i32 0, i32 1
  store i32 %17, ptr %20, align 8, !tbaa !13
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = load ptr, ptr %21, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.array_tag, ptr %22, i32 0, i32 2
  %24 = load i32, ptr %23, align 4, !tbaa !14
  store i32 %24, ptr %5, align 4, !tbaa !9
  br label %25

25:                                               ; preds = %38, %2
  %26 = load i32, ptr %5, align 4, !tbaa !9
  %27 = load i32, ptr %4, align 4, !tbaa !9
  %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 %5) #4
  br label %41

30:                                               ; preds = %25
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = load ptr, ptr %31, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct.array_tag, ptr %32, i32 0, i32 0
  %34 = load ptr, ptr %33, align 8, !tbaa !11
  %35 = load i32, ptr %5, align 4, !tbaa !9
  %36 = sext i32 %35 to i64
  %37 = getelementptr inbounds ptr, ptr %34, i64 %36
  store ptr null, ptr %37, align 8, !tbaa !5
  br label %38

38:                                               ; preds = %30
  %39 = load i32, ptr %5, align 4, !tbaa !9
  %40 = add nsw i32 %39, 1
  store i32 %40, ptr %5, align 4, !tbaa !9
  br label %25, !llvm.loop !15

41:                                               ; preds = %29
  ret void
}

; Function Attrs: nounwind allocsize(1)
declare ptr @realloc(ptr noundef, i64 noundef) #2

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 allocsize(1) "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(1) }
attributes #4 = { 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 = !{!"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, !6, i64 0}
!12 = !{!"array_tag", !6, i64 0, !10, i64 8, !10, i64 12, !7, i64 16}
!13 = !{!12, !10, i64 8}
!14 = !{!12, !10, i64 12}
!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: nounwind uwtable
define dso_local void @array_resize(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %4 = load ptr, ptr %3, align 8, !tbaa !9
  %5 = sext i32 %1 to i64
  %6 = shl nsw i64 %5, 3
  %7 = tail call ptr @realloc(ptr noundef %4, i64 noundef %6) #2
  %8 = load ptr, ptr %0, align 8, !tbaa !5
  store ptr %7, ptr %8, align 8, !tbaa !9
  %9 = load ptr, ptr %0, align 8, !tbaa !5
  %10 = getelementptr inbounds i8, ptr %9, i64 8
  store i32 %1, ptr %10, align 8, !tbaa !12
  %11 = getelementptr inbounds i8, ptr %9, i64 12
  %12 = load i32, ptr %11, align 4, !tbaa !13
  %13 = icmp slt i32 %12, %1
  br i1 %13, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %14 = sext i32 %12 to i64
  %15 = sub nsw i64 %5, %14
  %xtraiter = and i64 %15, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol

.lr.ph.prol:                                      ; preds = %.lr.ph.preheader, %.lr.ph.prol
  %indvars.iv.prol = phi i64 [ %indvars.iv.next.prol, %.lr.ph.prol ], [ %14, %.lr.ph.preheader ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader ]
  %16 = load ptr, ptr %0, align 8, !tbaa !5
  %17 = load ptr, ptr %16, align 8, !tbaa !9
  %18 = getelementptr inbounds ptr, ptr %17, i64 %indvars.iv.prol
  store ptr null, ptr %18, align 8, !tbaa !5
  %indvars.iv.next.prol = add nsw i64 %indvars.iv.prol, 1
  %prol.iter.next = add i64 %prol.iter, 1
  %prol.iter.cmp.not = icmp eq i64 %prol.iter.next, %xtraiter
  br i1 %prol.iter.cmp.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol, !llvm.loop !14

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader
  %indvars.iv.unr = phi i64 [ %14, %.lr.ph.preheader ], [ %indvars.iv.next.prol, %.lr.ph.prol ]
  %19 = sub nsw i64 %14, %5
  %20 = icmp ugt i64 %19, -4
  br i1 %20, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %2
  ret void

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next.3, %.lr.ph ], [ %indvars.iv.unr, %.lr.ph.prol.loopexit ]
  %21 = load ptr, ptr %0, align 8, !tbaa !5
  %22 = load ptr, ptr %21, align 8, !tbaa !9
  %23 = getelementptr inbounds ptr, ptr %22, i64 %indvars.iv
  store ptr null, ptr %23, align 8, !tbaa !5
  %24 = load ptr, ptr %0, align 8, !tbaa !5
  %25 = load ptr, ptr %24, align 8, !tbaa !9
  %26 = getelementptr ptr, ptr %25, i64 %indvars.iv
  %27 = getelementptr i8, ptr %26, i64 8
  store ptr null, ptr %27, align 8, !tbaa !5
  %28 = load ptr, ptr %0, align 8, !tbaa !5
  %29 = load ptr, ptr %28, align 8, !tbaa !9
  %30 = getelementptr ptr, ptr %29, i64 %indvars.iv
  %31 = getelementptr i8, ptr %30, i64 16
  store ptr null, ptr %31, align 8, !tbaa !5
  %32 = load ptr, ptr %0, align 8, !tbaa !5
  %33 = load ptr, ptr %32, align 8, !tbaa !9
  %34 = getelementptr ptr, ptr %33, i64 %indvars.iv
  %35 = getelementptr i8, ptr %34, i64 24
  store ptr null, ptr %35, align 8, !tbaa !5
  %indvars.iv.next.3 = add nsw i64 %indvars.iv, 4
  %exitcond.not.3 = icmp eq i64 %indvars.iv.next.3, %5
  br i1 %exitcond.not.3, label %._crit_edge, label %.lr.ph, !llvm.loop !16
}

; Function Attrs: mustprogress nounwind willreturn allockind("realloc") allocsize(1) memory(argmem: readwrite, inaccessiblemem: readwrite)
declare noalias noundef ptr @realloc(ptr allocptr nocapture noundef, i64 noundef) local_unnamed_addr #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 = { mustprogress nounwind willreturn allockind("realloc") allocsize(1) 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 #2 = { nounwind allocsize(1) }

!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, !6, i64 0}
!10 = !{!"array_tag", !6, i64 0, !11, i64 8, !11, i64 12, !7, i64 16}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 8}
!13 = !{!10, !11, i64 12}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.unroll.disable"}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}


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