; LLVM IR from microsoft/LightAIMD :: src (io)

; 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.stat = type { i64, i64, i64, i32, i32, i32, i32, i64, i64, i64, i64, %struct.timespec, %struct.timespec, %struct.timespec, [3 x i64] }
%struct.timespec = type { i64, i64 }

; 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 i64 @ensure_dir_exists(ptr noundef %0) #1 {
  %2 = alloca i64, align 8
  %3 = alloca ptr, align 8
  %4 = alloca %struct.stat, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 144, ptr %4) #3
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = call i32 @stat(ptr noundef %6, ptr noundef %4) #3
  %8 = getelementptr inbounds %struct.stat, ptr %4, i32 0, i32 3
  %9 = load i32, ptr %8, align 8, !tbaa !9
  %10 = and i32 %9, 61440
  %11 = icmp eq i32 %10, 16384
  br i1 %11, label %12, label %13

12:                                               ; preds = %1
  store i64 1, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %27

13:                                               ; preds = %1
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = call i32 @mkdir(ptr noundef %14, i32 noundef 511) #3
  %16 = icmp ne i32 %15, 0
  br i1 %16, label %26, label %17

17:                                               ; preds = %13
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = call i32 @stat(ptr noundef %18, ptr noundef %4) #3
  %20 = getelementptr inbounds %struct.stat, ptr %4, i32 0, i32 3
  %21 = load i32, ptr %20, align 8, !tbaa !9
  %22 = and i32 %21, 61440
  %23 = icmp eq i32 %22, 16384
  br i1 %23, label %24, label %25

24:                                               ; preds = %17
  store i64 1, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %27

25:                                               ; preds = %17
  br label %26

26:                                               ; preds = %25, %13
  store i64 0, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %27

27:                                               ; preds = %26, %24, %12
  call void @llvm.lifetime.end.p0(i64 144, ptr %4) #3
  %28 = load i64, ptr %2, align 8
  ret i64 %28
}

; Function Attrs: nounwind
declare i32 @stat(ptr noundef, ptr noundef) #2

; Function Attrs: nounwind
declare i32 @mkdir(ptr noundef, i32 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 "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 }

!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, !12, i64 24}
!10 = !{!"stat", !11, i64 0, !11, i64 8, !11, i64 16, !12, i64 24, !12, i64 28, !12, i64 32, !12, i64 36, !11, i64 40, !11, i64 48, !11, i64 56, !11, i64 64, !13, i64 72, !13, i64 88, !13, i64 104, !7, i64 120}
!11 = !{!"long", !7, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!"timespec", !11, i64 0, !11, i64 8}


; 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.stat = type { i64, i64, i64, i32, i32, i32, i32, i64, i64, i64, i64, %struct.timespec, %struct.timespec, %struct.timespec, [3 x i64] }
%struct.timespec = type { i64, i64 }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nofree nounwind uwtable
define dso_local range(i64 0, 2) i64 @ensure_dir_exists(ptr nocapture noundef readonly %0) local_unnamed_addr #1 {
  %2 = alloca %struct.stat, align 8
  call void @llvm.lifetime.start.p0(i64 144, ptr nonnull %2) #3
  %3 = call i32 @stat(ptr noundef %0, ptr noundef nonnull %2) #3
  %4 = getelementptr inbounds i8, ptr %2, i64 24
  %5 = load i32, ptr %4, align 8, !tbaa !5
  %6 = and i32 %5, 61440
  %7 = icmp eq i32 %6, 16384
  br i1 %7, label %16, label %8

8:                                                ; preds = %1
  %9 = tail call i32 @mkdir(ptr noundef %0, i32 noundef 511) #3
  %.not = icmp eq i32 %9, 0
  br i1 %.not, label %10, label %15

10:                                               ; preds = %8
  %11 = call i32 @stat(ptr noundef %0, ptr noundef nonnull %2) #3
  %12 = load i32, ptr %4, align 8, !tbaa !5
  %13 = and i32 %12, 61440
  %14 = icmp eq i32 %13, 16384
  br i1 %14, label %16, label %15

15:                                               ; preds = %10, %8
  br label %16

16:                                               ; preds = %10, %1, %15
  %.0 = phi i64 [ 0, %15 ], [ 1, %1 ], [ 1, %10 ]
  call void @llvm.lifetime.end.p0(i64 144, ptr nonnull %2) #3
  ret i64 %.0
}

; Function Attrs: nofree nounwind
declare noundef i32 @stat(ptr nocapture noundef readonly, ptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @mkdir(ptr nocapture noundef readonly, i32 noundef) local_unnamed_addr #2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nofree 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 = { nofree 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 = { 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 24}
!6 = !{!"stat", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24, !10, i64 28, !10, i64 32, !10, i64 36, !7, i64 40, !7, i64 48, !7, i64 56, !7, i64 64, !11, i64 72, !11, i64 88, !11, i64 104, !8, i64 120}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"timespec", !7, i64 0, !7, i64 8}


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