; LLVM IR from Muhammad-Magdi/problem-solving :: CSES/Dynamic Programming (cses1635)

; 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
@x = external dso_local global i32, align 4
@A = external dso_local global [105 x i32], align 16
@dp = external dso_local global [1000005 x i32], align 16
@.str = external hidden unnamed_addr constant [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 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
  store i32 0, ptr %1, align 4
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n, ptr noundef @x)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %7

7:                                                ; preds = %17, %0
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = load i32, ptr @n, align 4, !tbaa !5
  %10 = icmp slt i32 %8, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  br label %20

12:                                               ; preds = %7
  %13 = load i32, ptr %2, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds i32, ptr @A, i64 %14
  %16 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %15)
  br label %17

17:                                               ; preds = %12
  %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 %7, !llvm.loop !9

20:                                               ; preds = %11
  store i32 1, ptr @dp, align 16, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %21

21:                                               ; preds = %63, %20
  %22 = load i32, ptr %3, align 4, !tbaa !5
  %23 = load i32, ptr @x, align 4, !tbaa !5
  %24 = icmp sle i32 %22, %23
  br i1 %24, label %26, label %25

25:                                               ; preds = %21
  store i32 5, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  br label %66

26:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !5
  br label %27

27:                                               ; preds = %59, %26
  %28 = load i32, ptr %5, align 4, !tbaa !5
  %29 = load i32, ptr @n, align 4, !tbaa !5
  %30 = icmp slt i32 %28, %29
  br i1 %30, label %32, label %31

31:                                               ; preds = %27
  store i32 8, ptr %4, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %62

32:                                               ; preds = %27
  %33 = load i32, ptr %3, align 4, !tbaa !5
  %34 = load i32, ptr %5, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds [105 x i32], ptr @A, i64 0, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !5
  %38 = icmp sge i32 %33, %37
  br i1 %38, label %39, label %58

39:                                               ; preds = %32
  %40 = load i32, ptr %3, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [1000005 x i32], ptr @dp, i64 0, i64 %41
  %43 = load i32, ptr %42, align 4, !tbaa !5
  %44 = load i32, ptr %3, align 4, !tbaa !5
  %45 = load i32, ptr %5, align 4, !tbaa !5
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds [105 x i32], ptr @A, i64 0, i64 %46
  %48 = load i32, ptr %47, align 4, !tbaa !5
  %49 = sub nsw i32 %44, %48
  %50 = sext i32 %49 to i64
  %51 = getelementptr inbounds [1000005 x i32], ptr @dp, i64 0, i64 %50
  %52 = load i32, ptr %51, align 4, !tbaa !5
  %53 = add nsw i32 %43, %52
  %54 = srem i32 %53, 1000000007
  %55 = load i32, ptr %3, align 4, !tbaa !5
  %56 = sext i32 %55 to i64
  %57 = getelementptr inbounds [1000005 x i32], ptr @dp, i64 0, i64 %56
  store i32 %54, ptr %57, align 4, !tbaa !5
  br label %58

58:                                               ; preds = %39, %32
  br label %59

59:                                               ; preds = %58
  %60 = load i32, ptr %5, align 4, !tbaa !5
  %61 = add nsw i32 %60, 1
  store i32 %61, ptr %5, align 4, !tbaa !5
  br label %27, !llvm.loop !11

62:                                               ; preds = %31
  br label %63

63:                                               ; preds = %62
  %64 = load i32, ptr %3, align 4, !tbaa !5
  %65 = add nsw i32 %64, 1
  store i32 %65, ptr %3, align 4, !tbaa !5
  br label %21, !llvm.loop !12

66:                                               ; preds = %25
  %67 = load i32, ptr @x, align 4, !tbaa !5
  %68 = sext i32 %67 to i64
  %69 = getelementptr inbounds [1000005 x i32], ptr @dp, i64 0, i64 %68
  %70 = load i32, ptr %69, align 4, !tbaa !5
  %71 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i32 noundef %70)
  ret i32 0
}

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

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

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 = { 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
@x = external dso_local global i32, align 4
@A = external dso_local global [105 x i32], align 16
@dp = external dso_local local_unnamed_addr global [1000005 x i32], align 16
@.str = external hidden unnamed_addr constant [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nofree norecurse nounwind 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 @x)
  %2 = load i32, ptr @n, align 4, !tbaa !5
  %3 = icmp sgt i32 %2, 0
  br i1 %3, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %0
  %.lcssa18 = phi i32 [ %2, %0 ], [ %24, %.lr.ph ]
  store i32 1, ptr @dp, align 16, !tbaa !5
  %4 = load i32, ptr @x, align 4, !tbaa !5
  %.not23 = icmp sgt i32 %4, 0
  %5 = icmp sgt i32 %.lcssa18, 0
  %or.cond = and i1 %.not23, %5
  br i1 %or.cond, label %.preheader.us.preheader, label %._crit_edge25

.preheader.us.preheader:                          ; preds = %._crit_edge
  %6 = add nuw i32 %4, 1
  %wide.trip.count35 = zext i32 %6 to i64
  %wide.trip.count = zext nneg i32 %.lcssa18 to i64
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %._crit_edge22.us
  %indvars.iv32 = phi i64 [ 1, %.preheader.us.preheader ], [ %indvars.iv.next33, %._crit_edge22.us ]
  %7 = getelementptr inbounds [1000005 x i32], ptr @dp, i64 0, i64 %indvars.iv32
  %8 = trunc nuw nsw i64 %indvars.iv32 to i32
  br label %9

9:                                                ; preds = %.preheader.us, %21
  %indvars.iv29 = phi i64 [ 0, %.preheader.us ], [ %indvars.iv.next30, %21 ]
  %10 = getelementptr inbounds [105 x i32], ptr @A, i64 0, i64 %indvars.iv29
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %.not17.us = icmp slt i64 %indvars.iv32, %12
  br i1 %.not17.us, label %21, label %13

13:                                               ; preds = %9
  %14 = load i32, ptr %7, align 4, !tbaa !5
  %15 = sub nsw i32 %8, %11
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [1000005 x i32], ptr @dp, i64 0, i64 %16
  %18 = load i32, ptr %17, align 4, !tbaa !5
  %19 = add nsw i32 %18, %14
  %20 = srem i32 %19, 1000000007
  store i32 %20, ptr %7, align 4, !tbaa !5
  br label %21

21:                                               ; preds = %13, %9
  %indvars.iv.next30 = add nuw nsw i64 %indvars.iv29, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next30, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge22.us, label %9, !llvm.loop !9

._crit_edge22.us:                                 ; preds = %21
  %indvars.iv.next33 = add nuw nsw i64 %indvars.iv32, 1
  %exitcond36.not = icmp eq i64 %indvars.iv.next33, %wide.trip.count35
  br i1 %exitcond36.not, label %._crit_edge25, label %.preheader.us, !llvm.loop !11

.lr.ph:                                           ; preds = %0, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
  %22 = getelementptr inbounds i32, ptr @A, i64 %indvars.iv
  %23 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %22)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %24 = load i32, ptr @n, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = icmp slt i64 %indvars.iv.next, %25
  br i1 %26, label %.lr.ph, label %._crit_edge, !llvm.loop !12

._crit_edge25:                                    ; preds = %._crit_edge22.us, %._crit_edge
  %27 = sext i32 %4 to i64
  %28 = getelementptr inbounds [1000005 x i32], ptr @dp, i64 0, i64 %27
  %29 = load i32, ptr %28, align 4, !tbaa !5
  %30 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i32 noundef %29)
  ret i32 0
}

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

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

attributes #0 = { mustprogress nofree norecurse 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 = { 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" }

!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: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass