; LLVM IR from Dev-XYS/Algorithms :: Sprague-Grundy (main)

; 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"

@k = external dso_local global i32, align 4
@s = external dso_local global [100 x i32], align 16
@sg = external dso_local global [10001 x i32], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z7init_sgv() #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #2 {
  %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
  br label %7

7:                                                ; preds = %54, %0
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @k)
  %9 = load i32, ptr @k, align 4, !tbaa !5
  %10 = icmp eq i32 %9, 0
  br i1 %10, label %11, label %12

11:                                               ; preds = %7
  br label %56

12:                                               ; preds = %7
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %13

13:                                               ; preds = %23, %12
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = load i32, ptr @k, align 4, !tbaa !5
  %16 = icmp slt i32 %14, %15
  br i1 %16, label %18, label %17

17:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  br label %26

18:                                               ; preds = %13
  %19 = load i32, ptr %2, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [100 x i32], ptr @s, i64 0, i64 %20
  %22 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %21)
  br label %23

23:                                               ; preds = %18
  %24 = load i32, ptr %2, align 4, !tbaa !5
  %25 = add nsw i32 %24, 1
  store i32 %25, ptr %2, align 4, !tbaa !5
  br label %13, !llvm.loop !9

26:                                               ; preds = %17
  call void @_Z7init_sgv()
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  %27 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  br label %28

28:                                               ; preds = %53, %26
  %29 = load i32, ptr %3, align 4, !tbaa !5
  %30 = add nsw i32 %29, -1
  store i32 %30, ptr %3, align 4, !tbaa !5
  %31 = icmp ne i32 %29, 0
  br i1 %31, label %32, label %54

32:                                               ; preds = %28
  store i32 0, ptr %6, align 4, !tbaa !5
  %33 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %4)
  br label %34

34:                                               ; preds = %38, %32
  %35 = load i32, ptr %4, align 4, !tbaa !5
  %36 = add nsw i32 %35, -1
  store i32 %36, ptr %4, align 4, !tbaa !5
  %37 = icmp ne i32 %35, 0
  br i1 %37, label %38, label %46

38:                                               ; preds = %34
  %39 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %5)
  %40 = load i32, ptr %5, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [10001 x i32], ptr @sg, i64 0, i64 %41
  %43 = load i32, ptr %42, align 4, !tbaa !5
  %44 = load i32, ptr %6, align 4, !tbaa !5
  %45 = xor i32 %44, %43
  store i32 %45, ptr %6, align 4, !tbaa !5
  br label %34, !llvm.loop !11

46:                                               ; preds = %34
  %47 = load i32, ptr %6, align 4, !tbaa !5
  %48 = icmp eq i32 %47, 0
  br i1 %48, label %49, label %51

49:                                               ; preds = %46
  %50 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  br label %53

51:                                               ; preds = %46
  %52 = call i32 (ptr, ...) @printf(ptr noundef @.str.2)
  br label %53

53:                                               ; preds = %51, %49
  br label %28, !llvm.loop !12

54:                                               ; preds = %28
  %55 = call i32 (ptr, ...) @printf(ptr noundef @.str.3)
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  br label %7, !llvm.loop !13

56:                                               ; preds = %11
  ret i32 0
}

declare i32 @__isoc99_scanf(ptr noundef, ...) #3

declare i32 @printf(ptr noundef, ...) #3

attributes #0 = { mustprogress 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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { "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}
!13 = distinct !{!13, !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"

@k = external dso_local global i32, align 4
@s = external dso_local global [100 x i32], align 16
@sg = external dso_local local_unnamed_addr global [10001 x i32], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [2 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z7init_sgv() local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress norecurse nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #2 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @k)
  %5 = load i32, ptr @k, align 4, !tbaa !5
  %6 = icmp eq i32 %5, 0
  br i1 %6, label %._crit_edge17, label %.preheader

.preheader:                                       ; preds = %0, %._crit_edge16
  %7 = phi i32 [ %34, %._crit_edge16 ], [ %5, %0 ]
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %.preheader
  call void @_Z7init_sgv()
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  %9 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %10 = load i32, ptr %1, align 4, !tbaa !5
  %11 = add nsw i32 %10, -1
  store i32 %11, ptr %1, align 4, !tbaa !5
  %.not13 = icmp eq i32 %10, 0
  br i1 %.not13, label %._crit_edge16, label %.lr.ph15

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %.preheader ]
  %12 = getelementptr inbounds [100 x i32], ptr @s, i64 0, i64 %indvars.iv
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %12)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %14 = load i32, ptr @k, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = icmp slt i64 %indvars.iv.next, %15
  br i1 %16, label %.lr.ph, label %._crit_edge, !llvm.loop !9

.lr.ph15:                                         ; preds = %._crit_edge, %._crit_edge12.thread
  %17 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %2)
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = add nsw i32 %18, -1
  store i32 %19, ptr %2, align 4, !tbaa !5
  %.not68 = icmp eq i32 %18, 0
  br i1 %.not68, label %._crit_edge12.thread, label %.lr.ph11

.lr.ph11:                                         ; preds = %.lr.ph15, %.lr.ph11
  %.09 = phi i32 [ %25, %.lr.ph11 ], [ 0, %.lr.ph15 ]
  %20 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %3)
  %21 = load i32, ptr %3, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [10001 x i32], ptr @sg, i64 0, i64 %22
  %24 = load i32, ptr %23, align 4, !tbaa !5
  %25 = xor i32 %24, %.09
  %26 = load i32, ptr %2, align 4, !tbaa !5
  %27 = add nsw i32 %26, -1
  store i32 %27, ptr %2, align 4, !tbaa !5
  %.not6 = icmp eq i32 %26, 0
  br i1 %.not6, label %._crit_edge12, label %.lr.ph11, !llvm.loop !11

._crit_edge12:                                    ; preds = %.lr.ph11
  %28 = icmp eq i32 %24, %.09
  %spec.select = select i1 %28, ptr @.str.1, ptr @.str.2
  br label %._crit_edge12.thread

._crit_edge12.thread:                             ; preds = %._crit_edge12, %.lr.ph15
  %.str.2.sink = phi ptr [ @.str.1, %.lr.ph15 ], [ %spec.select, %._crit_edge12 ]
  %29 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.2.sink)
  %30 = load i32, ptr %1, align 4, !tbaa !5
  %31 = add nsw i32 %30, -1
  store i32 %31, ptr %1, align 4, !tbaa !5
  %.not = icmp eq i32 %30, 0
  br i1 %.not, label %._crit_edge16, label %.lr.ph15, !llvm.loop !12

._crit_edge16:                                    ; preds = %._crit_edge12.thread, %._crit_edge
  %32 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4
  %33 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @k)
  %34 = load i32, ptr @k, align 4, !tbaa !5
  %35 = icmp eq i32 %34, 0
  br i1 %35, label %._crit_edge17, label %.preheader, !llvm.loop !13

._crit_edge17:                                    ; preds = %._crit_edge16, %0
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

attributes #0 = { mustprogress 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress 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 #3 = { 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 #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}
!13 = distinct !{!13, !10}


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