; LLVM IR from rociodellasala/TP3_SO :: Userland/linearGraph (linearGraph)

; 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"

@.str = external hidden unnamed_addr constant [23 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [28 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [16 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [16 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

; 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
declare dso_local void @draw(i32 noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #1 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  store i32 0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 0, ptr %3, align 4, !tbaa !5
  call void (ptr, ...) @printf(ptr noundef @.str)
  call void (...) @nextLine()
  call void (ptr, ...) @printf(ptr noundef @.str.1)
  call void (...) @nextLine()
  call void (ptr, ...) @printf(ptr noundef @.str.2)
  br label %4

4:                                                ; preds = %7, %0
  %5 = call i32 @getNum(ptr noundef %2)
  %6 = icmp eq i32 %5, 1
  br i1 %6, label %7, label %8

7:                                                ; preds = %4
  call void (ptr, ...) @printf(ptr noundef @.str.3)
  call void (ptr, ...) @printf(ptr noundef @.str.4)
  br label %4, !llvm.loop !9

8:                                                ; preds = %4
  call void (ptr, ...) @printf(ptr noundef @.str.5)
  call void (ptr, ...) @printf(ptr noundef @.str.6)
  br label %9

9:                                                ; preds = %12, %8
  %10 = call i32 @getNum(ptr noundef %3)
  %11 = icmp eq i32 %10, 1
  br i1 %11, label %12, label %13

12:                                               ; preds = %9
  call void (ptr, ...) @printf(ptr noundef @.str.3)
  call void (ptr, ...) @printf(ptr noundef @.str.7)
  br label %9, !llvm.loop !11

13:                                               ; preds = %9
  call void (...) @clear_screen()
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = load i32, ptr %3, align 4, !tbaa !5
  call void @draw(i32 noundef %14, i32 noundef %15)
  call void (...) @clear_screen()
  call void (...) @clear_buffer()
  call void (...) @exitProcess()
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  ret i32 0
}

declare void @printf(ptr noundef, ...) #2

declare void @nextLine(...) #2

declare i32 @getNum(ptr noundef) #2

declare void @clear_screen(...) #2

declare void @clear_buffer(...) #2

declare void @exitProcess(...) #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 = { "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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; 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"

@.str = external hidden unnamed_addr constant [23 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [28 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [16 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [15 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [16 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

; 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
declare dso_local void @draw(i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #1 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #3
  store i32 0, ptr %1, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  store i32 0, ptr %2, align 4, !tbaa !5
  tail call void (ptr, ...) @printf(ptr noundef nonnull @.str) #3
  tail call void (...) @nextLine() #3
  tail call void (ptr, ...) @printf(ptr noundef nonnull @.str.1) #3
  tail call void (...) @nextLine() #3
  tail call void (ptr, ...) @printf(ptr noundef nonnull @.str.2) #3
  %3 = call i32 @getNum(ptr noundef nonnull %1) #3
  %4 = icmp eq i32 %3, 1
  br i1 %4, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  call void (ptr, ...) @printf(ptr noundef nonnull @.str.3) #3
  call void (ptr, ...) @printf(ptr noundef nonnull @.str.4) #3
  %5 = call i32 @getNum(ptr noundef nonnull %1) #3
  %6 = icmp eq i32 %5, 1
  br i1 %6, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %0
  call void (ptr, ...) @printf(ptr noundef nonnull @.str.5) #3
  call void (ptr, ...) @printf(ptr noundef nonnull @.str.6) #3
  %7 = call i32 @getNum(ptr noundef nonnull %2) #3
  %8 = icmp eq i32 %7, 1
  br i1 %8, label %.lr.ph2, label %._crit_edge3

.lr.ph2:                                          ; preds = %._crit_edge, %.lr.ph2
  call void (ptr, ...) @printf(ptr noundef nonnull @.str.3) #3
  call void (ptr, ...) @printf(ptr noundef nonnull @.str.7) #3
  %9 = call i32 @getNum(ptr noundef nonnull %2) #3
  %10 = icmp eq i32 %9, 1
  br i1 %10, label %.lr.ph2, label %._crit_edge3, !llvm.loop !11

._crit_edge3:                                     ; preds = %.lr.ph2, %._crit_edge
  call void (...) @clear_screen() #3
  %11 = load i32, ptr %1, align 4, !tbaa !5
  %12 = load i32, ptr %2, align 4, !tbaa !5
  call void @draw(i32 noundef %11, i32 noundef %12)
  call void (...) @clear_screen() #3
  call void (...) @clear_buffer() #3
  call void (...) @exitProcess() #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #3
  ret i32 0
}

declare void @printf(ptr noundef, ...) local_unnamed_addr #2

declare void @nextLine(...) local_unnamed_addr #2

declare i32 @getNum(ptr noundef) local_unnamed_addr #2

declare void @clear_screen(...) local_unnamed_addr #2

declare void @clear_buffer(...) local_unnamed_addr #2

declare void @exitProcess(...) local_unnamed_addr #2

attributes #0 = { mustprogress 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 = { "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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass