; LLVM IR from h-ssiqueira/Sort_Algorithms :: src/esotericFunMiscellaneous (sleepSort)

; 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"

%union.sem_t = type { i64, [24 x i8] }

@LENGTH = external dso_local global i32, align 4
@threads = external dso_local global ptr, align 8
@lock = external dso_local global %union.sem_t, align 8
@sortedValues = external dso_local global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local void @interruptHandler(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #5
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %5

5:                                                ; preds = %17, %1
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = load i32, ptr @LENGTH, align 4, !tbaa !5
  %8 = icmp slt i32 %6, %7
  br i1 %8, label %10, label %9

9:                                                ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #5
  br label %20

10:                                               ; preds = %5
  %11 = load ptr, ptr @threads, align 8, !tbaa !9
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds i64, ptr %11, i64 %13
  %15 = load i64, ptr %14, align 8, !tbaa !11
  %16 = call i32 @pthread_cancel(i64 noundef %15)
  br label %17

17:                                               ; preds = %10
  %18 = load i32, ptr %3, align 4, !tbaa !5
  %19 = add nsw i32 %18, 1
  store i32 %19, ptr %3, align 4, !tbaa !5
  br label %5, !llvm.loop !13

20:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #5
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %21

21:                                               ; preds = %33, %20
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = load i32, ptr @LENGTH, align 4, !tbaa !5
  %24 = icmp slt i32 %22, %23
  br i1 %24, label %26, label %25

25:                                               ; preds = %21
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #5
  br label %36

26:                                               ; preds = %21
  %27 = load ptr, ptr @threads, align 8, !tbaa !9
  %28 = load i32, ptr %4, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds i64, ptr %27, i64 %29
  %31 = load i64, ptr %30, align 8, !tbaa !11
  %32 = call i32 @pthread_join(i64 noundef %31, ptr noundef null)
  br label %33

33:                                               ; preds = %26
  %34 = load i32, ptr %4, align 4, !tbaa !5
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %4, align 4, !tbaa !5
  br label %21, !llvm.loop !15

36:                                               ; preds = %25
  %37 = call i32 @sem_destroy(ptr noundef @lock) #5
  %38 = load ptr, ptr @threads, align 8, !tbaa !9
  call void @free(ptr noundef %38) #5
  %39 = load ptr, ptr @sortedValues, align 8, !tbaa !9
  call void @free(ptr noundef %39) #5
  %40 = load i32, ptr %2, align 4, !tbaa !5
  call void @exit(i32 noundef %40) #6
  unreachable
}

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

declare i32 @pthread_cancel(i64 noundef) #2

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

declare i32 @pthread_join(i64 noundef, ptr noundef) #2

; Function Attrs: nounwind
declare i32 @sem_destroy(ptr noundef) #3

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

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #4

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 = { "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 = { noreturn 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 #5 = { nounwind }
attributes #6 = { noreturn 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, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


; 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"

%union.sem_t = type { i64, [24 x i8] }

@LENGTH = external dso_local local_unnamed_addr global i32, align 4
@threads = external dso_local local_unnamed_addr global ptr, align 8
@lock = external dso_local global %union.sem_t, align 8
@sortedValues = external dso_local local_unnamed_addr global ptr, align 8

; Function Attrs: noreturn nounwind uwtable
define dso_local void @interruptHandler(i32 noundef %0) local_unnamed_addr #0 {
  %2 = load i32, ptr @LENGTH, align 4, !tbaa !5
  %3 = icmp sgt i32 %2, 0
  br i1 %3, label %.lr.ph, label %._crit_edge

.preheader:                                       ; preds = %.lr.ph
  %4 = icmp sgt i32 %9, 0
  br i1 %4, label %.lr.ph10, label %._crit_edge

.lr.ph:                                           ; preds = %1, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %1 ]
  %5 = load ptr, ptr @threads, align 8, !tbaa !9
  %6 = getelementptr inbounds i64, ptr %5, i64 %indvars.iv
  %7 = load i64, ptr %6, align 8, !tbaa !11
  %8 = tail call i32 @pthread_cancel(i64 noundef %7) #5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %9 = load i32, ptr @LENGTH, align 4, !tbaa !5
  %10 = sext i32 %9 to i64
  %11 = icmp slt i64 %indvars.iv.next, %10
  br i1 %11, label %.lr.ph, label %.preheader, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph10, %1, %.preheader
  %12 = tail call i32 @sem_destroy(ptr noundef nonnull @lock) #5
  %13 = load ptr, ptr @threads, align 8, !tbaa !9
  tail call void @free(ptr noundef %13) #5
  %14 = load ptr, ptr @sortedValues, align 8, !tbaa !9
  tail call void @free(ptr noundef %14) #5
  tail call void @exit(i32 noundef %0) #6
  unreachable

.lr.ph10:                                         ; preds = %.preheader, %.lr.ph10
  %indvars.iv12 = phi i64 [ %indvars.iv.next13, %.lr.ph10 ], [ 0, %.preheader ]
  %15 = load ptr, ptr @threads, align 8, !tbaa !9
  %16 = getelementptr inbounds i64, ptr %15, i64 %indvars.iv12
  %17 = load i64, ptr %16, align 8, !tbaa !11
  %18 = tail call i32 @pthread_join(i64 noundef %17, ptr noundef null) #5
  %indvars.iv.next13 = add nuw nsw i64 %indvars.iv12, 1
  %19 = load i32, ptr @LENGTH, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = icmp slt i64 %indvars.iv.next13, %20
  br i1 %21, label %.lr.ph10, label %._crit_edge, !llvm.loop !15
}

declare i32 @pthread_cancel(i64 noundef) local_unnamed_addr #1

declare i32 @pthread_join(i64 noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind
declare i32 @sem_destroy(ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #3

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #4

attributes #0 = { noreturn 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 = { "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 "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 = { 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 #4 = { noreturn 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 #5 = { nounwind }
attributes #6 = { noreturn 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, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !14}


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