; LLVM IR from likle/cwalk :: test (segment_test)

; 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.cwk_segment = type { ptr, ptr, ptr, ptr, i64 }

@.str.16 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.17 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.18 = external hidden unnamed_addr constant [5 x i8], align 1

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

declare void @cwk_path_set_style(i32 noundef) #1

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

declare zeroext i1 @cwk_path_get_last_segment(ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @segment_back_with_root() #2 {
  %1 = alloca i32, align 4
  %2 = alloca ptr, align 8
  %3 = alloca %struct.cwk_segment, align 8
  %4 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 40, ptr %3) #4
  call void @cwk_path_set_style(i32 noundef 0)
  store ptr @.str.16, ptr %2, align 8, !tbaa !5
  %5 = load ptr, ptr %2, align 8, !tbaa !5
  %6 = call zeroext i1 @cwk_path_get_last_segment(ptr noundef %5, ptr noundef %3)
  br i1 %6, label %8, label %7

7:                                                ; preds = %0
  store i32 1, ptr %1, align 4
  store i32 1, ptr %4, align 4
  br label %31

8:                                                ; preds = %0
  %9 = getelementptr inbounds %struct.cwk_segment, ptr %3, i32 0, i32 2
  %10 = load ptr, ptr %9, align 8, !tbaa !9
  %11 = getelementptr inbounds %struct.cwk_segment, ptr %3, i32 0, i32 4
  %12 = load i64, ptr %11, align 8, !tbaa !12
  %13 = call i32 @strncmp(ptr noundef %10, ptr noundef @.str.17, i64 noundef %12) #5
  %14 = icmp ne i32 %13, 0
  br i1 %14, label %15, label %16

15:                                               ; preds = %8
  store i32 1, ptr %1, align 4
  store i32 1, ptr %4, align 4
  br label %31

16:                                               ; preds = %8
  %17 = call zeroext i1 @cwk_path_get_previous_segment(ptr noundef %3)
  br i1 %17, label %19, label %18

18:                                               ; preds = %16
  store i32 1, ptr %1, align 4
  store i32 1, ptr %4, align 4
  br label %31

19:                                               ; preds = %16
  %20 = getelementptr inbounds %struct.cwk_segment, ptr %3, i32 0, i32 2
  %21 = load ptr, ptr %20, align 8, !tbaa !9
  %22 = getelementptr inbounds %struct.cwk_segment, ptr %3, i32 0, i32 4
  %23 = load i64, ptr %22, align 8, !tbaa !12
  %24 = call i32 @strncmp(ptr noundef %21, ptr noundef @.str.18, i64 noundef %23) #5
  %25 = icmp ne i32 %24, 0
  br i1 %25, label %26, label %27

26:                                               ; preds = %19
  store i32 1, ptr %1, align 4
  store i32 1, ptr %4, align 4
  br label %31

27:                                               ; preds = %19
  %28 = call zeroext i1 @cwk_path_get_previous_segment(ptr noundef %3)
  br i1 %28, label %29, label %30

29:                                               ; preds = %27
  store i32 1, ptr %1, align 4
  store i32 1, ptr %4, align 4
  br label %31

30:                                               ; preds = %27
  store i32 0, ptr %1, align 4
  store i32 1, ptr %4, align 4
  br label %31

31:                                               ; preds = %30, %29, %26, %18, %15, %7
  call void @llvm.lifetime.end.p0(i64 40, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #4
  %32 = load i32, ptr %1, align 4
  ret i32 %32
}

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strncmp(ptr noundef, ptr noundef, i64 noundef) #3

declare zeroext i1 @cwk_path_get_previous_segment(ptr noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 willreturn memory(read) "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 = { nounwind }
attributes #5 = { nounwind willreturn memory(read) }

!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 16}
!10 = !{!"cwk_segment", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !11, i64 32}
!11 = !{!"long", !7, i64 0}
!12 = !{!10, !11, i64 32}


; 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.cwk_segment = type { ptr, ptr, ptr, ptr, i64 }

@.str.16 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.17 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.18 = external hidden unnamed_addr constant [5 x i8], align 1

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

declare void @cwk_path_set_style(i32 noundef) local_unnamed_addr #1

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

declare zeroext i1 @cwk_path_get_last_segment(ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @segment_back_with_root() local_unnamed_addr #2 {
  %1 = alloca %struct.cwk_segment, align 8
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %1) #4
  tail call void @cwk_path_set_style(i32 noundef 0) #4
  %2 = call zeroext i1 @cwk_path_get_last_segment(ptr noundef nonnull @.str.16, ptr noundef nonnull %1) #4
  br i1 %2, label %3, label %17

3:                                                ; preds = %0
  %4 = getelementptr inbounds i8, ptr %1, i64 16
  %5 = load ptr, ptr %4, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %1, i64 32
  %7 = load i64, ptr %6, align 8, !tbaa !11
  %8 = call i32 @strncmp(ptr noundef %5, ptr noundef nonnull @.str.17, i64 noundef %7) #5
  %.not = icmp eq i32 %8, 0
  br i1 %.not, label %9, label %17

9:                                                ; preds = %3
  %10 = call zeroext i1 @cwk_path_get_previous_segment(ptr noundef nonnull %1) #4
  br i1 %10, label %11, label %17

11:                                               ; preds = %9
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = load i64, ptr %6, align 8, !tbaa !11
  %14 = call i32 @strncmp(ptr noundef %12, ptr noundef nonnull @.str.18, i64 noundef %13) #5
  %.not1 = icmp eq i32 %14, 0
  br i1 %.not1, label %15, label %17

15:                                               ; preds = %11
  %16 = call zeroext i1 @cwk_path_get_previous_segment(ptr noundef nonnull %1) #4
  %. = zext i1 %16 to i32
  br label %17

17:                                               ; preds = %15, %11, %9, %3, %0
  %.0 = phi i32 [ 1, %0 ], [ 1, %3 ], [ 1, %9 ], [ 1, %11 ], [ %., %15 ]
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %1) #4
  ret i32 %.0
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i32 @strncmp(ptr nocapture noundef, ptr nocapture noundef, i64 noundef) local_unnamed_addr #3

declare zeroext i1 @cwk_path_get_previous_segment(ptr noundef) local_unnamed_addr #1

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 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 = { mustprogress nofree nounwind willreturn memory(argmem: read) "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 = { nounwind }
attributes #5 = { nounwind willreturn memory(read) }

!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 16}
!6 = !{!"cwk_segment", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !10, i64 32}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !10, i64 32}


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