; LLVM IR from tangjz/acm-icpc :: hackerrank (xor-key)

; 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"

@t = external dso_local global i32, align 4
@n = external dso_local global i32, align 4
@q = external dso_local global i32, align 4
@seg_tot = external dso_local global i32, align 4
@root = external dso_local global [100001 x i32], 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 [7 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z6updateRiii(ptr noundef nonnull align 4 dereferenceable(4), i32 noundef, i32 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
declare dso_local noundef i32 @_Z5queryiiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef) #0

; 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
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef @t)
  br label %8

8:                                                ; preds = %55, %0
  %9 = load i32, ptr @t, align 4, !tbaa !5
  %10 = add nsw i32 %9, -1
  store i32 %10, ptr @t, align 4, !tbaa !5
  %11 = icmp ne i32 %9, 0
  br i1 %11, label %12, label %56

12:                                               ; preds = %8
  store i32 0, ptr @seg_tot, align 4, !tbaa !5
  %13 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef @n, ptr noundef @q)
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  store i32 1, ptr %2, align 4, !tbaa !5
  br label %14

14:                                               ; preds = %33, %12
  %15 = load i32, ptr %2, align 4, !tbaa !5
  %16 = load i32, ptr @n, align 4, !tbaa !5
  %17 = icmp sle i32 %15, %16
  br i1 %17, label %19, label %18

18:                                               ; preds = %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  br label %36

19:                                               ; preds = %14
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  %20 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %3)
  %21 = load i32, ptr %2, align 4, !tbaa !5
  %22 = sub nsw i32 %21, 1
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [100001 x i32], ptr @root, i64 0, i64 %23
  %25 = load i32, ptr %24, align 4, !tbaa !5
  %26 = load i32, ptr %2, align 4, !tbaa !5
  %27 = sext i32 %26 to i64
  %28 = getelementptr inbounds [100001 x i32], ptr @root, i64 0, i64 %27
  store i32 %25, ptr %28, align 4, !tbaa !5
  %29 = load i32, ptr %2, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [100001 x i32], ptr @root, i64 0, i64 %30
  %32 = load i32, ptr %3, align 4, !tbaa !5
  call void @_Z6updateRiii(ptr noundef nonnull align 4 dereferenceable(4) %31, i32 noundef 14, i32 noundef %32)
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  br label %33

33:                                               ; preds = %19
  %34 = load i32, ptr %2, align 4, !tbaa !5
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %2, align 4, !tbaa !5
  br label %14, !llvm.loop !9

36:                                               ; preds = %18
  br label %37

37:                                               ; preds = %41, %36
  %38 = load i32, ptr @q, align 4, !tbaa !5
  %39 = add nsw i32 %38, -1
  store i32 %39, ptr @q, align 4, !tbaa !5
  %40 = icmp ne i32 %38, 0
  br i1 %40, label %41, label %55

41:                                               ; preds = %37
  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
  %42 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.2, ptr noundef %6, ptr noundef %4, ptr noundef %5)
  %43 = load i32, ptr %4, align 4, !tbaa !5
  %44 = sub nsw i32 %43, 1
  %45 = sext i32 %44 to i64
  %46 = getelementptr inbounds [100001 x i32], ptr @root, i64 0, i64 %45
  %47 = load i32, ptr %46, align 4, !tbaa !5
  %48 = load i32, ptr %5, align 4, !tbaa !5
  %49 = sext i32 %48 to i64
  %50 = getelementptr inbounds [100001 x i32], ptr @root, i64 0, i64 %49
  %51 = load i32, ptr %50, align 4, !tbaa !5
  %52 = load i32, ptr %6, align 4, !tbaa !5
  %53 = call noundef i32 @_Z5queryiiii(i32 noundef %47, i32 noundef %51, i32 noundef 14, i32 noundef %52)
  %54 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef %53)
  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
  br label %37, !llvm.loop !11

55:                                               ; preds = %37
  br label %8, !llvm.loop !12

56:                                               ; preds = %8
  ret i32 0
}

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

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

attributes #0 = { 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 #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}


; 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"

@t = external dso_local global i32, align 4
@n = external dso_local global i32, align 4
@q = external dso_local global i32, align 4
@seg_tot = external dso_local local_unnamed_addr global i32, align 4
@root = external dso_local global [100001 x i32], 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 [7 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z6updateRiii(ptr noundef nonnull align 4 dereferenceable(4), i32 noundef, i32 noundef) 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 uwtable
declare dso_local noundef i32 @_Z5queryiiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress norecurse 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 = alloca i32, align 4
  %5 = tail call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull @t)
  %6 = load i32, ptr @t, align 4, !tbaa !5
  %7 = add nsw i32 %6, -1
  store i32 %7, ptr @t, align 4, !tbaa !5
  %.not11 = icmp eq i32 %6, 0
  br i1 %.not11, label %._crit_edge, label %.lr.ph12

.loopexit:                                        ; preds = %.lr.ph10, %.preheader
  %8 = load i32, ptr @t, align 4, !tbaa !5
  %9 = add nsw i32 %8, -1
  store i32 %9, ptr @t, align 4, !tbaa !5
  %.not = icmp eq i32 %8, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph12, !llvm.loop !9

.lr.ph12:                                         ; preds = %0, %.loopexit
  store i32 0, ptr @seg_tot, align 4, !tbaa !5
  %10 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull @n, ptr noundef nonnull @q)
  %11 = load i32, ptr @n, align 4, !tbaa !5
  %.not57 = icmp slt i32 %11, 1
  br i1 %.not57, label %.preheader, label %.lr.ph

.preheader:                                       ; preds = %.lr.ph, %.lr.ph12
  %12 = load i32, ptr @q, align 4, !tbaa !5
  %13 = add nsw i32 %12, -1
  store i32 %13, ptr @q, align 4, !tbaa !5
  %.not69 = icmp eq i32 %12, 0
  br i1 %.not69, label %.loopexit, label %.lr.ph10

.lr.ph:                                           ; preds = %.lr.ph12, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 1, %.lr.ph12 ]
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  %14 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1)
  %15 = add nsw i64 %indvars.iv, -1
  %16 = getelementptr inbounds [100001 x i32], ptr @root, i64 0, i64 %15
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %18 = getelementptr inbounds [100001 x i32], ptr @root, i64 0, i64 %indvars.iv
  store i32 %17, ptr %18, align 4, !tbaa !5
  %19 = load i32, ptr %1, align 4, !tbaa !5
  call void @_Z6updateRiii(ptr noundef nonnull align 4 dereferenceable(4) %18, i32 noundef 14, i32 noundef %19)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %20 = load i32, ptr @n, align 4, !tbaa !5
  %21 = sext i32 %20 to i64
  %.not5.not = icmp slt i64 %indvars.iv, %21
  br i1 %.not5.not, label %.lr.ph, label %.preheader, !llvm.loop !11

.lr.ph10:                                         ; preds = %.preheader, %.lr.ph10
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #4
  %22 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.2, ptr noundef nonnull %4, ptr noundef nonnull %2, ptr noundef nonnull %3)
  %23 = load i32, ptr %2, align 4, !tbaa !5
  %24 = add nsw i32 %23, -1
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [100001 x i32], ptr @root, i64 0, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !5
  %28 = load i32, ptr %3, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [100001 x i32], ptr @root, i64 0, i64 %29
  %31 = load i32, ptr %30, align 4, !tbaa !5
  %32 = load i32, ptr %4, align 4, !tbaa !5
  %33 = call noundef i32 @_Z5queryiiii(i32 noundef %27, i32 noundef %31, i32 noundef 14, i32 noundef %32)
  %34 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef %33)
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  %35 = load i32, ptr @q, align 4, !tbaa !5
  %36 = add nsw i32 %35, -1
  store i32 %36, ptr @q, align 4, !tbaa !5
  %.not6 = icmp eq i32 %35, 0
  br i1 %.not6, label %.loopexit, label %.lr.ph10, !llvm.loop !12

._crit_edge:                                      ; preds = %.loopexit, %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 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 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}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass