; LLVM IR from cselab/aphros :: src/util (system)

; 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, i64, i64, i64, i64, i64, i64, [3 x 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
declare i32 @stat(ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @SystemIsFile(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca %struct.stat, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 144, ptr %3) #3
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = call i32 @stat(ptr noundef %4, ptr noundef %3) #3
  %6 = icmp eq i32 %5, 0
  br i1 %6, label %7, label %19

7:                                                ; preds = %1
  %8 = getelementptr inbounds %struct.stat, ptr %3, i32 0, i32 3
  %9 = load i32, ptr %8, align 8, !tbaa !9
  %10 = and i32 %9, 61440
  %11 = icmp eq i32 %10, 32768
  br i1 %11, label %17, label %12

12:                                               ; preds = %7
  %13 = getelementptr inbounds %struct.stat, ptr %3, i32 0, i32 3
  %14 = load i32, ptr %13, align 8, !tbaa !9
  %15 = and i32 %14, 61440
  %16 = icmp eq i32 %15, 40960
  br label %17

17:                                               ; preds = %12, %7
  %18 = phi i1 [ true, %7 ], [ %16, %12 ]
  br label %19

19:                                               ; preds = %17, %1
  %20 = phi i1 [ false, %1 ], [ %18, %17 ]
  %21 = zext i1 %20 to i32
  call void @llvm.lifetime.end.p0(i64 144, ptr %3) #3
  ret i32 %21
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #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, !11, i64 72, !11, i64 80, !11, i64 88, !11, i64 96, !11, i64 104, !11, i64 112, !7, i64 120}
!11 = !{!"long", !7, i64 0}
!12 = !{!"int", !7, i64 0}


; 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, i64, i64, i64, i64, i64, i64, [3 x 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
declare noundef i32 @stat(ptr nocapture noundef readonly, ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind uwtable
define dso_local range(i32 0, 2) i32 @SystemIsFile(ptr nocapture noundef readonly %0) local_unnamed_addr #2 {
  %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 = icmp eq i32 %3, 0
  %5 = getelementptr inbounds i8, ptr %2, i64 24
  %6 = load i32, ptr %5, align 8
  %7 = and i32 %6, 53248
  %8 = icmp eq i32 %7, 32768
  %narrow = select i1 %4, i1 %8, i1 false
  %9 = zext i1 %narrow to i32
  call void @llvm.lifetime.end.p0(i64 144, ptr nonnull %2) #3
  ret i32 %9
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #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)"}


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