; LLVM IR from VastoLorde95/Competitive-Programming :: Hackerrank/Week of Code/Week 20/Problem A (A)

; 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"

@n = external dso_local global i32, align 4
@k = external dso_local global i32, align 4
@a = external dso_local global [110 x i32], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n, ptr noundef @k)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  store i32 0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %18, %0
  %9 = load i32, ptr %3, align 4, !tbaa !5
  %10 = load i32, ptr @n, align 4, !tbaa !5
  %11 = icmp slt i32 %9, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  br label %21

13:                                               ; preds = %8
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [110 x i32], ptr @a, i64 0, i64 %15
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %16)
  br label %18

18:                                               ; preds = %13
  %19 = load i32, ptr %3, align 4, !tbaa !5
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %3, align 4, !tbaa !5
  br label %8, !llvm.loop !9

21:                                               ; preds = %12
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  store i32 0, ptr %4, align 4, !tbaa !5
  br label %22

22:                                               ; preds = %56, %21
  %23 = load i32, ptr %4, align 4, !tbaa !5
  %24 = load i32, ptr @n, align 4, !tbaa !5
  %25 = icmp slt i32 %23, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %22
  store i32 5, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  br label %59

27:                                               ; preds = %22
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  %28 = load i32, ptr %4, align 4, !tbaa !5
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %6, align 4, !tbaa !5
  br label %30

30:                                               ; preds = %52, %27
  %31 = load i32, ptr %6, align 4, !tbaa !5
  %32 = load i32, ptr @n, align 4, !tbaa !5
  %33 = icmp slt i32 %31, %32
  br i1 %33, label %35, label %34

34:                                               ; preds = %30
  store i32 8, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %55

35:                                               ; preds = %30
  %36 = load i32, ptr %4, align 4, !tbaa !5
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds [110 x i32], ptr @a, i64 0, i64 %37
  %39 = load i32, ptr %38, align 4, !tbaa !5
  %40 = load i32, ptr %6, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [110 x i32], ptr @a, i64 0, i64 %41
  %43 = load i32, ptr %42, align 4, !tbaa !5
  %44 = add nsw i32 %39, %43
  %45 = load i32, ptr @k, align 4, !tbaa !5
  %46 = srem i32 %44, %45
  %47 = icmp eq i32 %46, 0
  br i1 %47, label %48, label %51

48:                                               ; preds = %35
  %49 = load i32, ptr %2, align 4, !tbaa !5
  %50 = add nsw i32 %49, 1
  store i32 %50, ptr %2, align 4, !tbaa !5
  br label %51

51:                                               ; preds = %48, %35
  br label %52

52:                                               ; preds = %51
  %53 = load i32, ptr %6, align 4, !tbaa !5
  %54 = add nsw i32 %53, 1
  store i32 %54, ptr %6, align 4, !tbaa !5
  br label %30, !llvm.loop !11

55:                                               ; preds = %34
  br label %56

56:                                               ; preds = %55
  %57 = load i32, ptr %4, align 4, !tbaa !5
  %58 = add nsw i32 %57, 1
  store i32 %58, ptr %4, align 4, !tbaa !5
  br label %22, !llvm.loop !12

59:                                               ; preds = %26
  %60 = load i32, ptr %2, align 4, !tbaa !5
  call void @_Z2trIiJEEvT_DpRKT0_(i32 noundef %60)
  store i32 0, ptr %1, align 4
  store i32 1, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  %61 = load i32, ptr %1, align 4
  ret i32 %61
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #1

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

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

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z2trIiJEEvT_DpRKT0_(i32 noundef) #3

attributes #0 = { mustprogress norecurse 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 = { mustprogress 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !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"

@n = external dso_local global i32, align 4
@k = external dso_local global i32, align 4
@a = external dso_local global [110 x i32], align 16
@.str = external hidden unnamed_addr constant [5 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n, ptr noundef nonnull @k)
  %2 = load i32, ptr @n, align 4, !tbaa !5
  %3 = icmp sgt i32 %2, 0
  br i1 %3, label %.lr.ph, label %._crit_edge

.preheader:                                       ; preds = %.lr.ph
  %4 = icmp sgt i32 %9, 0
  br i1 %4, label %.lr.ph23, label %._crit_edge

.lr.ph23:                                         ; preds = %.preheader
  %5 = load i32, ptr @k, align 4
  %6 = zext nneg i32 %9 to i64
  %wide.trip.count35 = zext nneg i32 %9 to i64
  br label %12

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %7 = getelementptr inbounds [110 x i32], ptr @a, i64 0, i64 %indvars.iv
  %8 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %7)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %9 = load i32, ptr @n, align 4, !tbaa !5
  %10 = sext i32 %9 to i64
  %11 = icmp slt i64 %indvars.iv.next, %10
  br i1 %11, label %.lr.ph, label %.preheader, !llvm.loop !9

.loopexit:                                        ; preds = %16, %12
  %.1.lcssa = phi i32 [ %.01521, %12 ], [ %spec.select, %16 ]
  %indvars.iv.next28 = add nuw nsw i64 %indvars.iv27, 1
  %exitcond36.not = icmp eq i64 %indvars.iv.next33, %wide.trip.count35
  br i1 %exitcond36.not, label %._crit_edge, label %12, !llvm.loop !11

._crit_edge:                                      ; preds = %.loopexit, %0, %.preheader
  %.015.lcssa = phi i32 [ 0, %.preheader ], [ 0, %0 ], [ %.1.lcssa, %.loopexit ]
  tail call void @_Z2trIiJEEvT_DpRKT0_(i32 noundef %.015.lcssa)
  ret i32 0

12:                                               ; preds = %.lr.ph23, %.loopexit
  %indvars.iv32 = phi i64 [ 0, %.lr.ph23 ], [ %indvars.iv.next33, %.loopexit ]
  %indvars.iv27 = phi i64 [ 1, %.lr.ph23 ], [ %indvars.iv.next28, %.loopexit ]
  %.01521 = phi i32 [ 0, %.lr.ph23 ], [ %.1.lcssa, %.loopexit ]
  %indvars.iv.next33 = add nuw nsw i64 %indvars.iv32, 1
  %13 = icmp ult i64 %indvars.iv.next33, %6
  br i1 %13, label %.lr.ph19, label %.loopexit

.lr.ph19:                                         ; preds = %12
  %14 = getelementptr inbounds [110 x i32], ptr @a, i64 0, i64 %indvars.iv32
  %15 = load i32, ptr %14, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %.lr.ph19, %16
  %indvars.iv29 = phi i64 [ %indvars.iv27, %.lr.ph19 ], [ %indvars.iv.next30, %16 ]
  %.117 = phi i32 [ %.01521, %.lr.ph19 ], [ %spec.select, %16 ]
  %17 = getelementptr inbounds [110 x i32], ptr @a, i64 0, i64 %indvars.iv29
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = add nsw i32 %18, %15
  %20 = srem i32 %19, %5
  %21 = icmp eq i32 %20, 0
  %22 = zext i1 %21 to i32
  %spec.select = add nsw i32 %.117, %22
  %indvars.iv.next30 = add nuw nsw i64 %indvars.iv29, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next30, %wide.trip.count35
  br i1 %exitcond.not, label %.loopexit, label %16, !llvm.loop !12
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z2trIiJEEvT_DpRKT0_(i32 noundef) local_unnamed_addr #2

attributes #0 = { mustprogress norecurse 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 = { nofree 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 #2 = { mustprogress 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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass