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

; 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.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [21 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @printMsg(i32 noundef) #0

declare void @printf(ptr noundef, ...) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca ptr, align 8
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %4 = call ptr @malloc(i32 noundef 200)
  store ptr %4, ptr %3, align 8, !tbaa !5
  call void (...) @nextLine()
  %5 = load ptr, ptr %3, align 8, !tbaa !5
  %6 = call ptr @strcpy(ptr noundef %5, ptr noundef @.str.1) #4
  call void (ptr, ...) @printf(ptr noundef @.str.2)
  call void (...) @nextLine()
  store i32 0, ptr %2, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %11, %0
  %8 = load i32, ptr %2, align 4, !tbaa !9
  %9 = icmp slt i32 %8, 15
  br i1 %9, label %10, label %14

10:                                               ; preds = %7
  call void @printMsg(i32 noundef 0)
  br label %11

11:                                               ; preds = %10
  %12 = load i32, ptr %2, align 4, !tbaa !9
  %13 = add nsw i32 %12, 1
  store i32 %13, ptr %2, align 4, !tbaa !9
  br label %7, !llvm.loop !11

14:                                               ; preds = %7
  call void (...) @nextLine()
  call void (...) @clear_buffer()
  br label %15

15:                                               ; preds = %16, %14
  br label %16

16:                                               ; preds = %15
  br label %15
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

declare ptr @malloc(i32 noundef) #1

declare void @nextLine(...) #1

; Function Attrs: nounwind
declare ptr @strcpy(ptr noundef, ptr noundef) #3

declare void @clear_buffer(...) #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 = { "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { 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 #4 = { 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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; 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.1 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [21 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local void @printMsg(i32 noundef) local_unnamed_addr #0

declare void @printf(ptr noundef, ...) local_unnamed_addr #1

; Function Attrs: noreturn nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  %1 = tail call ptr @malloc(i32 noundef 200) #4
  tail call void (...) @nextLine() #4
  %2 = tail call ptr @strcpy(ptr noundef nonnull dereferenceable(1) %1, ptr noundef nonnull dereferenceable(1) @.str.1) #4
  tail call void (ptr, ...) @printf(ptr noundef nonnull @.str.2) #4
  tail call void (...) @nextLine() #4
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void @printMsg(i32 noundef 0)
  tail call void (...) @nextLine() #4
  tail call void (...) @clear_buffer() #4
  br label %3

3:                                                ; preds = %3, %0
  br label %3
}

declare ptr @malloc(i32 noundef) local_unnamed_addr #1

declare void @nextLine(...) local_unnamed_addr #1

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: readwrite)
declare ptr @strcpy(ptr noalias noundef returned writeonly, ptr noalias nocapture noundef readonly) local_unnamed_addr #3

declare void @clear_buffer(...) local_unnamed_addr #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 = { "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 = { noreturn 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: readwrite) "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 }

!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: GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass