; LLVM IR from lzyrapx/Competitive-Programming :: HDUOJ (1754（线段树） 单点替换求最值)

; 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"

@.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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5buildiii(i32 noundef, i32 noundef, i32 noundef) #1

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z6updateiiiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) #1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z5queryiiiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) #1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() #3 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca [3 x i8], align 1
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  br label %7

7:                                                ; preds = %35, %0
  %8 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.1, ptr noundef %2, ptr noundef %3)
  %9 = xor i32 %8, -1
  %10 = icmp ne i32 %9, 0
  br i1 %10, label %11, label %36

11:                                               ; preds = %7
  %12 = load i32, ptr %2, align 4, !tbaa !5
  call void @_Z5buildiii(i32 noundef 1, i32 noundef %12, i32 noundef 1)
  br label %13

13:                                               ; preds = %34, %11
  %14 = load i32, ptr %3, align 4, !tbaa !5
  %15 = add nsw i32 %14, -1
  store i32 %15, ptr %3, align 4, !tbaa !5
  %16 = icmp ne i32 %14, 0
  br i1 %16, label %17, label %35

17:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 3, 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
  %18 = getelementptr inbounds [3 x i8], ptr %4, i64 0, i64 0
  %19 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str.2, ptr noundef %18, ptr noundef %5, ptr noundef %6)
  %20 = getelementptr inbounds [3 x i8], ptr %4, i64 0, i64 0
  %21 = load i8, ptr %20, align 1, !tbaa !9
  %22 = sext i8 %21 to i32
  %23 = icmp eq i32 %22, 81
  br i1 %23, label %24, label %30

24:                                               ; preds = %17
  %25 = load i32, ptr %5, align 4, !tbaa !5
  %26 = load i32, ptr %6, align 4, !tbaa !5
  %27 = load i32, ptr %2, align 4, !tbaa !5
  %28 = call noundef i32 @_Z5queryiiiii(i32 noundef %25, i32 noundef %26, i32 noundef 1, i32 noundef %27, i32 noundef 1)
  %29 = call i32 (ptr, ...) @printf(ptr noundef @.str.3, i32 noundef %28)
  br label %34

30:                                               ; preds = %17
  %31 = load i32, ptr %5, align 4, !tbaa !5
  %32 = load i32, ptr %6, align 4, !tbaa !5
  %33 = load i32, ptr %2, align 4, !tbaa !5
  call void @_Z6updateiiiii(i32 noundef %31, i32 noundef %32, i32 noundef 1, i32 noundef %33, i32 noundef 1)
  br label %34

34:                                               ; preds = %30, %24
  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 3, ptr %4) #4
  br label %13, !llvm.loop !10

35:                                               ; preds = %13
  br label %7, !llvm.loop !12

36:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #4
  ret i32 0
}

declare i32 @printf(ptr noundef, ...) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { "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 = { 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 #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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = distinct !{!12, !11}


; 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"

@.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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z5buildiii(i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z6updateiiiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_Z5queryiiiii(i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress norecurse uwtable
define dso_local noundef i32 @main() local_unnamed_addr #3 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  %3 = alloca [3 x i8], align 1
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %1) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #4
  %6 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %.not3 = icmp eq i32 %6, -1
  br i1 %.not3, label %._crit_edge, label %.lr.ph4

.loopexit:                                        ; preds = %21, %.lr.ph4
  %7 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.1, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %.not = icmp eq i32 %7, -1
  br i1 %.not, label %._crit_edge, label %.lr.ph4, !llvm.loop !5

.lr.ph4:                                          ; preds = %0, %.loopexit
  %8 = load i32, ptr %1, align 4, !tbaa !7
  call void @_Z5buildiii(i32 noundef 1, i32 noundef %8, i32 noundef 1)
  %9 = load i32, ptr %2, align 4, !tbaa !7
  %10 = add nsw i32 %9, -1
  store i32 %10, ptr %2, align 4, !tbaa !7
  %.not12 = icmp eq i32 %9, 0
  br i1 %.not12, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph4, %21
  call void @llvm.lifetime.start.p0(i64 3, ptr nonnull %3) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %4) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %5) #4
  %11 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str.2, ptr noundef nonnull %3, ptr noundef nonnull %4, ptr noundef nonnull %5)
  %12 = load i8, ptr %3, align 1, !tbaa !11
  %13 = icmp eq i8 %12, 81
  %14 = load i32, ptr %4, align 4, !tbaa !7
  %15 = load i32, ptr %5, align 4, !tbaa !7
  %16 = load i32, ptr %1, align 4, !tbaa !7
  br i1 %13, label %17, label %20

17:                                               ; preds = %.lr.ph
  %18 = call noundef i32 @_Z5queryiiiii(i32 noundef %14, i32 noundef %15, i32 noundef 1, i32 noundef %16, i32 noundef 1)
  %19 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3, i32 noundef %18)
  br label %21

20:                                               ; preds = %.lr.ph
  call void @_Z6updateiiiii(i32 noundef %14, i32 noundef %15, i32 noundef 1, i32 noundef %16, i32 noundef 1)
  br label %21

21:                                               ; preds = %20, %17
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 3, ptr nonnull %3) #4
  %22 = load i32, ptr %2, align 4, !tbaa !7
  %23 = add nsw i32 %22, -1
  store i32 %23, ptr %2, align 4, !tbaa !7
  %.not1 = icmp eq i32 %22, 0
  br i1 %.not1, label %.loopexit, label %.lr.ph, !llvm.loop !12

._crit_edge:                                      ; preds = %.loopexit, %0
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %1) #4
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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 #3 = { 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 #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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = !{!8, !8, i64 0}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}
!11 = !{!9, !9, i64 0}
!12 = distinct !{!12, !6}


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