; 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.2 = external hidden unnamed_addr constant [19 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [1 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [15 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

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

declare zeroext i1 @cwk_path_get_next_segment(ptr noundef) #1

declare i64 @cwk_path_change_segment(ptr noundef, ptr noundef, ptr noundef, i64 noundef) #1

; Function Attrs: nounwind willreturn memory(read)
declare i32 @strcmp(ptr noundef, ptr noundef) #2

; 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 i32 @segment_change_empty() #3 {
  %1 = alloca i32, align 4
  %2 = alloca ptr, align 8
  %3 = alloca [4096 x i8], align 16
  %4 = alloca %struct.cwk_segment, align 8
  %5 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4096, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 40, ptr %4) #4
  call void @cwk_path_set_style(i32 noundef 0)
  store ptr @.str.2, ptr %2, align 8, !tbaa !5
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = call zeroext i1 @cwk_path_get_first_segment(ptr noundef %6, ptr noundef %4)
  br i1 %7, label %9, label %8

8:                                                ; preds = %0
  store i32 1, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %20

9:                                                ; preds = %0
  %10 = call zeroext i1 @cwk_path_get_next_segment(ptr noundef %4)
  br i1 %10, label %12, label %11

11:                                               ; preds = %9
  store i32 1, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %20

12:                                               ; preds = %9
  %13 = getelementptr inbounds [4096 x i8], ptr %3, i64 0, i64 0
  %14 = call i64 @cwk_path_change_segment(ptr noundef %4, ptr noundef @.str.5, ptr noundef %13, i64 noundef 4096)
  %15 = getelementptr inbounds [4096 x i8], ptr %3, i64 0, i64 0
  %16 = call i32 @strcmp(ptr noundef %15, ptr noundef @.str.6) #5
  %17 = icmp ne i32 %16, 0
  br i1 %17, label %18, label %19

18:                                               ; preds = %12
  store i32 1, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %20

19:                                               ; preds = %12
  store i32 0, ptr %1, align 4
  store i32 1, ptr %5, align 4
  br label %20

20:                                               ; preds = %19, %18, %11, %8
  call void @llvm.lifetime.end.p0(i64 40, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4096, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #4
  %21 = load i32, ptr %1, align 4
  ret i32 %21
}

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 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 #3 = { 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 #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"}


; 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.2 = external hidden unnamed_addr constant [19 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [1 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [15 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

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

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

declare i64 @cwk_path_change_segment(ptr noundef, ptr noundef, ptr noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i32 @strcmp(ptr nocapture noundef, ptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: mustprogress 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 range(i32 0, 2) i32 @segment_change_empty() local_unnamed_addr #3 {
  %1 = alloca [4096 x i8], align 16
  %2 = alloca %struct.cwk_segment, align 8
  call void @llvm.lifetime.start.p0(i64 4096, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 40, ptr nonnull %2) #4
  tail call void @cwk_path_set_style(i32 noundef 0) #4
  %3 = call zeroext i1 @cwk_path_get_first_segment(ptr noundef nonnull @.str.2, ptr noundef nonnull %2) #4
  br i1 %3, label %4, label %9

4:                                                ; preds = %0
  %5 = call zeroext i1 @cwk_path_get_next_segment(ptr noundef nonnull %2) #4
  br i1 %5, label %6, label %9

6:                                                ; preds = %4
  %7 = call i64 @cwk_path_change_segment(ptr noundef nonnull %2, ptr noundef nonnull @.str.5, ptr noundef nonnull %1, i64 noundef 4096) #4
  %8 = call i32 @strcmp(ptr noundef nonnull dereferenceable(1) %1, ptr noundef nonnull dereferenceable(1) @.str.6) #5
  %.not = icmp ne i32 %8, 0
  %. = zext i1 %.not to i32
  br label %9

9:                                                ; preds = %6, %4, %0
  %.0 = phi i32 [ 1, %0 ], [ 1, %4 ], [ %., %6 ]
  call void @llvm.lifetime.end.p0(i64 40, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 4096, ptr nonnull %1) #4
  ret i32 %.0
}

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 = { 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 #3 = { 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 #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)"}


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