; LLVM IR from VastoLorde95/Competitive-Programming :: CodeChef/SNACKDOWN/16/Qualifier/Problem D/D.ll (Z5solvev)

; 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
@a = external dso_local global [101 x i64], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_Z3getx(i64 noundef) #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 uwtable
define dso_local void @_Z5solvev() #2 {
  %1 = alloca i32, align 4
  %2 = alloca i64, align 8
  %3 = alloca i32, align 4
  %4 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @n)
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #4
  store i32 0, ptr %1, align 4, !tbaa !5
  br label %5

5:                                                ; preds = %15, %0
  %6 = load i32, ptr %1, align 4, !tbaa !5
  %7 = load i32, ptr @n, align 4, !tbaa !5
  %8 = icmp slt i32 %6, %7
  br i1 %8, label %10, label %9

9:                                                ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #4
  br label %18

10:                                               ; preds = %5
  %11 = load i32, ptr %1, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds i64, ptr @a, i64 %12
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %13)
  br label %15

15:                                               ; preds = %10
  %16 = load i32, ptr %1, align 4, !tbaa !5
  %17 = add nsw i32 %16, 1
  store i32 %17, ptr %1, align 4, !tbaa !5
  br label %5, !llvm.loop !9

18:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #4
  store i64 0, ptr %2, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %19

19:                                               ; preds = %32, %18
  %20 = load i32, ptr %3, align 4, !tbaa !5
  %21 = load i32, ptr @n, align 4, !tbaa !5
  %22 = icmp slt i32 %20, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %19
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  br label %35

24:                                               ; preds = %19
  %25 = load i32, ptr %3, align 4, !tbaa !5
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds [101 x i64], ptr @a, i64 0, i64 %26
  %28 = load i64, ptr %27, align 8, !tbaa !11
  %29 = call noundef i64 @_Z3getx(i64 noundef %28)
  %30 = load i64, ptr %2, align 8, !tbaa !11
  %31 = xor i64 %30, %29
  store i64 %31, ptr %2, align 8, !tbaa !11
  br label %32

32:                                               ; preds = %24
  %33 = load i32, ptr %3, align 4, !tbaa !5
  %34 = add nsw i32 %33, 1
  store i32 %34, ptr %3, align 4, !tbaa !5
  br label %19, !llvm.loop !13

35:                                               ; preds = %23
  %36 = load i64, ptr %2, align 8, !tbaa !11
  %37 = icmp ne i64 %36, 0
  br i1 %37, label %38, label %40

38:                                               ; preds = %35
  %39 = call i32 @puts(ptr noundef @.str.2)
  br label %42

40:                                               ; preds = %35
  %41 = call i32 @puts(ptr noundef @.str.3)
  br label %42

42:                                               ; preds = %40, %38
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #4
  ret void
}

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

declare i32 @puts(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 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 = !{!12, !12, i64 0}
!12 = !{!"long long", !7, i64 0}
!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"

@n = external dso_local global i32, align 4
@a = external dso_local global [101 x i64], align 16
@.str = external hidden unnamed_addr constant [3 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_Z3getx(i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z5solvev() local_unnamed_addr #0 {
  %1 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @n)
  %2 = load i32, ptr @n, align 4, !tbaa !5
  %3 = icmp sgt i32 %2, 0
  br i1 %3, label %.lr.ph, label %._crit_edge.thread

.preheader:                                       ; preds = %.lr.ph
  %4 = icmp sgt i32 %7, 0
  br i1 %4, label %.lr.ph13, label %._crit_edge.thread

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

._crit_edge:                                      ; preds = %.lr.ph13
  %10 = icmp eq i64 %13, %.0811
  br i1 %10, label %._crit_edge.thread, label %18

.lr.ph13:                                         ; preds = %.preheader, %.lr.ph13
  %indvars.iv15 = phi i64 [ %indvars.iv.next16, %.lr.ph13 ], [ 0, %.preheader ]
  %.0811 = phi i64 [ %14, %.lr.ph13 ], [ 0, %.preheader ]
  %11 = getelementptr inbounds [101 x i64], ptr @a, i64 0, i64 %indvars.iv15
  %12 = load i64, ptr %11, align 8, !tbaa !11
  %13 = tail call noundef i64 @_Z3getx(i64 noundef %12)
  %14 = xor i64 %13, %.0811
  %indvars.iv.next16 = add nuw nsw i64 %indvars.iv15, 1
  %15 = load i32, ptr @n, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = icmp slt i64 %indvars.iv.next16, %16
  br i1 %17, label %.lr.ph13, label %._crit_edge, !llvm.loop !13

._crit_edge.thread:                               ; preds = %0, %.preheader, %._crit_edge
  br label %18

18:                                               ; preds = %._crit_edge, %._crit_edge.thread
  %.str.3.sink = phi ptr [ @.str.3, %._crit_edge.thread ], [ @.str.2, %._crit_edge ]
  %19 = tail call i32 @puts(ptr noundef nonnull dereferenceable(1) %.str.3.sink)
  ret void
}

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

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

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 = { 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 = !{!12, !12, i64 0}
!12 = !{!"long long", !7, i64 0}
!13 = distinct !{!13, !10}


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