; LLVM IR from LlimaV10/doom-nukem_v2 :: libft (get_next_line)

; 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"

@get_next_line.lst = external hidden global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local i32 @get_next_line(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i8, align 1
  %7 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #3
  %8 = load ptr, ptr %5, align 8, !tbaa !9
  %9 = icmp eq ptr %8, null
  br i1 %9, label %17, label %10

10:                                               ; preds = %2
  %11 = load i32, ptr %4, align 4, !tbaa !5
  %12 = icmp slt i32 %11, 0
  br i1 %12, label %17, label %13

13:                                               ; preds = %10
  %14 = load i32, ptr %4, align 4, !tbaa !5
  %15 = call i64 @read(i32 noundef %14, ptr noundef %6, i64 noundef 0)
  %16 = icmp slt i64 %15, 0
  br i1 %16, label %17, label %18

17:                                               ; preds = %13, %10, %2
  store i32 -1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

18:                                               ; preds = %13
  %19 = load ptr, ptr %5, align 8, !tbaa !9
  store ptr null, ptr %19, align 8, !tbaa !9
  %20 = load ptr, ptr @get_next_line.lst, align 8, !tbaa !9
  %21 = load i32, ptr %4, align 4, !tbaa !5
  %22 = load ptr, ptr %5, align 8, !tbaa !9
  %23 = call ptr @add_prev(ptr noundef %20, i32 noundef %21, ptr noundef %22)
  %24 = icmp ne ptr %23, null
  br i1 %24, label %25, label %26

25:                                               ; preds = %18
  store i32 1, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

26:                                               ; preds = %18
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = load ptr, ptr %5, align 8, !tbaa !9
  %29 = call signext i8 @read_next(ptr noundef @get_next_line.lst, i32 noundef %27, ptr noundef %28)
  %30 = sext i8 %29 to i32
  store i32 %30, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %31

31:                                               ; preds = %26, %25, %17
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #3
  %32 = load i32, ptr %3, align 4
  ret i32 %32
}

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

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

; Function Attrs: nounwind uwtable
declare hidden ptr @add_prev(ptr noundef, i32 noundef, ptr noundef) #0

; Function Attrs: nounwind uwtable
declare hidden signext i8 @read_next(ptr noundef, i32 noundef, ptr noundef) #0

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

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 }

!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}


; 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"

@get_next_line.lst = external hidden global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local range(i32 -128, 128) i32 @get_next_line(i32 noundef %0, ptr noundef %1) local_unnamed_addr #0 {
  %3 = alloca i8, align 1
  call void @llvm.lifetime.start.p0(i64 1, ptr nonnull %3) #3
  %4 = icmp eq ptr %1, null
  %5 = icmp slt i32 %0, 0
  %or.cond = or i1 %5, %4
  br i1 %or.cond, label %15, label %6

6:                                                ; preds = %2
  %7 = call i64 @read(i32 noundef %0, ptr noundef nonnull %3, i64 noundef 0) #3
  %8 = icmp slt i64 %7, 0
  br i1 %8, label %15, label %9

9:                                                ; preds = %6
  store ptr null, ptr %1, align 8, !tbaa !5
  %10 = load ptr, ptr @get_next_line.lst, align 8, !tbaa !5
  %11 = tail call ptr @add_prev(ptr noundef %10, i32 noundef %0, ptr noundef nonnull %1)
  %.not = icmp eq ptr %11, null
  br i1 %.not, label %12, label %15

12:                                               ; preds = %9
  %13 = tail call signext i8 @read_next(ptr noundef nonnull @get_next_line.lst, i32 noundef %0, ptr noundef nonnull %1)
  %14 = sext i8 %13 to i32
  br label %15

15:                                               ; preds = %9, %2, %6, %12
  %.0 = phi i32 [ %14, %12 ], [ -1, %6 ], [ -1, %2 ], [ 1, %9 ]
  call void @llvm.lifetime.end.p0(i64 1, ptr nonnull %3) #3
  ret i32 %.0
}

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

; Function Attrs: nofree
declare noundef i64 @read(i32 noundef, ptr nocapture noundef, i64 noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare hidden ptr @add_prev(ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare hidden signext i8 @read_next(ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

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

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


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