; LLVM IR from rociodellasala/TP3_SO :: Kernel (scheduler)

; 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 [18 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 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
define dso_local void @exitMessage() #1 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #3
  store i32 0, ptr %1, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  store i32 3, ptr %2, align 4, !tbaa !5
  call void (...) @clear_screen()
  call void @print_string(ptr noundef @.str)
  br label %3

3:                                                ; preds = %20, %0
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = icmp slt i32 %4, 60000000
  br i1 %5, label %6, label %23

6:                                                ; preds = %3
  %7 = load i32, ptr %1, align 4, !tbaa !5
  %8 = icmp eq i32 %7, 10000000
  br i1 %8, label %15, label %9

9:                                                ; preds = %6
  %10 = load i32, ptr %1, align 4, !tbaa !5
  %11 = icmp eq i32 %10, 15000000
  br i1 %11, label %15, label %12

12:                                               ; preds = %9
  %13 = load i32, ptr %1, align 4, !tbaa !5
  %14 = icmp eq i32 %13, 30000000
  br i1 %14, label %15, label %20

15:                                               ; preds = %12, %9, %6
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  call void @print_int(i64 noundef %17)
  call void @print_string(ptr noundef @.str.1)
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = add nsw i32 %18, -1
  store i32 %19, ptr %2, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %15, %12
  %21 = load i32, ptr %1, align 4, !tbaa !5
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %1, align 4, !tbaa !5
  br label %3, !llvm.loop !9

23:                                               ; preds = %3
  call void (...) @clear_screen()
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #3
  ret void
}

declare void @clear_screen(...) #2

declare void @print_string(ptr noundef) #2

declare void @print_int(i64 noundef) #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"}


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

; Function Attrs: nounwind uwtable
define dso_local void @exitMessage() local_unnamed_addr #0 {
  tail call void (...) @clear_screen() #2
  tail call void @print_string(ptr noundef nonnull @.str) #2
  br label %1

1:                                                ; preds = %0, %5
  %.012 = phi i32 [ 3, %0 ], [ %.1, %5 ]
  %.01011 = phi i32 [ 0, %0 ], [ %6, %5 ]
  switch i32 %.01011, label %5 [
    i32 30000000, label %2
    i32 15000000, label %2
    i32 10000000, label %2
  ]

2:                                                ; preds = %1, %1, %1
  %3 = sext i32 %.012 to i64
  tail call void @print_int(i64 noundef %3) #2
  tail call void @print_string(ptr noundef nonnull @.str.1) #2
  %4 = add nsw i32 %.012, -1
  br label %5

5:                                                ; preds = %1, %2
  %.1 = phi i32 [ %4, %2 ], [ %.012, %1 ]
  %6 = add nuw nsw i32 %.01011, 1
  %exitcond.not = icmp eq i32 %6, 60000000
  br i1 %exitcond.not, label %7, label %1, !llvm.loop !5

7:                                                ; preds = %5
  tail call void (...) @clear_screen() #2
  ret void
}

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

declare void @print_string(ptr noundef) local_unnamed_addr #1

declare void @print_int(i64 noundef) 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 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,SROAPass,SimplifyCFGPass,TailCallElimPass