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

; 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"

@buffer_max_per_line = external hidden global i32, align 4
@buffer_max_per_column = external hidden global i32, align 4
@buffer_position = external hidden global i32, align 4

; Function Attrs: nounwind uwtable
declare dso_local void @move_screen() #0

; Function Attrs: nounwind uwtable
define dso_local void @nextLineAnyway() #0 {
  %1 = load i32, ptr @buffer_position, align 4, !tbaa !5
  %2 = load i32, ptr @buffer_max_per_line, align 4, !tbaa !5
  %3 = sdiv i32 %1, %2
  %4 = load i32, ptr @buffer_max_per_column, align 4, !tbaa !5
  %5 = sub nsw i32 %4, 3
  %6 = icmp eq i32 %3, %5
  br i1 %6, label %7, label %8

7:                                                ; preds = %0
  call void @move_screen()
  br label %16

8:                                                ; preds = %0
  %9 = load i32, ptr @buffer_max_per_line, align 4, !tbaa !5
  %10 = load i32, ptr @buffer_position, align 4, !tbaa !5
  %11 = load i32, ptr @buffer_max_per_line, align 4, !tbaa !5
  %12 = srem i32 %10, %11
  %13 = sub nsw i32 %9, %12
  %14 = load i32, ptr @buffer_position, align 4, !tbaa !5
  %15 = add nsw i32 %14, %13
  store i32 %15, ptr @buffer_position, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %8, %7
  ret void
}

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" }

!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"}


; 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"

@buffer_max_per_line = external hidden local_unnamed_addr global i32, align 4
@buffer_max_per_column = external hidden local_unnamed_addr global i32, align 4
@buffer_position = external hidden local_unnamed_addr global i32, align 4

; Function Attrs: nounwind uwtable
declare dso_local void @move_screen() local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @nextLineAnyway() local_unnamed_addr #0 {
  %1 = load i32, ptr @buffer_position, align 4, !tbaa !5
  %2 = load i32, ptr @buffer_max_per_line, align 4, !tbaa !5
  %3 = sdiv i32 %1, %2
  %4 = srem i32 %1, %2
  %5 = load i32, ptr @buffer_max_per_column, align 4, !tbaa !5
  %6 = add nsw i32 %5, -3
  %7 = icmp eq i32 %3, %6
  br i1 %7, label %8, label %9

8:                                                ; preds = %0
  tail call void @move_screen()
  br label %12

9:                                                ; preds = %0
  %10 = add i32 %2, %1
  %11 = sub i32 %10, %4
  store i32 %11, ptr @buffer_position, align 4, !tbaa !5
  br label %12

12:                                               ; preds = %9, %8
  ret void
}

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" }

!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"}


; Effective O3 passes: DivRemPairsPass,EarlyCSEPass,GlobalOptPass,InstCombinePass,ReassociatePass,TailCallElimPass