; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/310 Division 2/Problem E/E.ll (Z6query1iiii)

; 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"

%struct.node = type { i32 }

@tree1 = external dso_local global [2097152 x %struct.node], align 16

; 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 @_Z6shift1iii(i32 noundef, i32 noundef, i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local i32 @_Z6query1iiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #1 {
  %5 = alloca %struct.node, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store i32 %0, ptr %6, align 4, !tbaa !5
  store i32 %1, ptr %7, align 4, !tbaa !5
  store i32 %2, ptr %8, align 4, !tbaa !5
  store i32 %3, ptr %9, align 4, !tbaa !5
  %14 = load i32, ptr %8, align 4, !tbaa !5
  %15 = add nsw i32 %14, 1
  %16 = load i32, ptr %9, align 4, !tbaa !5
  %17 = icmp eq i32 %15, %16
  br i1 %17, label %18, label %22

18:                                               ; preds = %4
  %19 = load i32, ptr %7, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [2097152 x %struct.node], ptr @tree1, i64 0, i64 %20
  call void @llvm.memcpy.p0.p0.i64(ptr align 4 %5, ptr align 4 %21, i64 4, i1 false), !tbaa.struct !9
  br label %52

22:                                               ; preds = %4
  %23 = load i32, ptr %7, align 4, !tbaa !5
  %24 = load i32, ptr %8, align 4, !tbaa !5
  %25 = load i32, ptr %9, align 4, !tbaa !5
  call void @_Z6shift1iii(i32 noundef %23, i32 noundef %24, i32 noundef %25)
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %26 = load i32, ptr %7, align 4, !tbaa !5
  %27 = shl i32 %26, 1
  store i32 %27, ptr %10, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #3
  %28 = load i32, ptr %10, align 4, !tbaa !5
  %29 = add nsw i32 %28, 1
  store i32 %29, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #3
  %30 = load i32, ptr %8, align 4, !tbaa !5
  %31 = load i32, ptr %9, align 4, !tbaa !5
  %32 = add nsw i32 %30, %31
  %33 = ashr i32 %32, 1
  store i32 %33, ptr %12, align 4, !tbaa !5
  %34 = load i32, ptr %6, align 4, !tbaa !5
  %35 = load i32, ptr %12, align 4, !tbaa !5
  %36 = icmp slt i32 %34, %35
  br i1 %36, label %37, label %44

37:                                               ; preds = %22
  %38 = load i32, ptr %6, align 4, !tbaa !5
  %39 = load i32, ptr %10, align 4, !tbaa !5
  %40 = load i32, ptr %8, align 4, !tbaa !5
  %41 = load i32, ptr %12, align 4, !tbaa !5
  %42 = call i32 @_Z6query1iiii(i32 noundef %38, i32 noundef %39, i32 noundef %40, i32 noundef %41)
  %43 = getelementptr inbounds %struct.node, ptr %5, i32 0, i32 0
  store i32 %42, ptr %43, align 4
  store i32 1, ptr %13, align 4
  br label %51

44:                                               ; preds = %22
  %45 = load i32, ptr %6, align 4, !tbaa !5
  %46 = load i32, ptr %11, align 4, !tbaa !5
  %47 = load i32, ptr %12, align 4, !tbaa !5
  %48 = load i32, ptr %9, align 4, !tbaa !5
  %49 = call i32 @_Z6query1iiii(i32 noundef %45, i32 noundef %46, i32 noundef %47, i32 noundef %48)
  %50 = getelementptr inbounds %struct.node, ptr %5, i32 0, i32 0
  store i32 %49, ptr %50, align 4
  store i32 1, ptr %13, align 4
  br label %51

51:                                               ; preds = %44, %37
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  br label %52

52:                                               ; preds = %51, %18
  %53 = getelementptr inbounds %struct.node, ptr %5, i32 0, i32 0
  %54 = load i32, ptr %53, align 4
  ret i32 %54
}

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #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 = { nocallback nofree 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 = !{i64 0, i64 4, !5}


; 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"

%struct.node = type { i32 }

@tree1 = external dso_local local_unnamed_addr global [2097152 x %struct.node], align 16

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z6shift1iii(i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local i32 @_Z6query1iiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  br label %tailrecurse.outer

tailrecurse.outer:                                ; preds = %15, %4
  %.tr23.ph = phi i32 [ %16, %15 ], [ %1, %4 ]
  %.tr24.ph = phi i32 [ %13, %15 ], [ %2, %4 ]
  %.tr25.ph = phi i32 [ %.tr25, %15 ], [ %3, %4 ]
  %5 = add nsw i32 %.tr24.ph, 1
  br label %tailrecurse

tailrecurse:                                      ; preds = %tailrecurse.outer, %10
  %.tr23 = phi i32 [ %11, %10 ], [ %.tr23.ph, %tailrecurse.outer ]
  %.tr25 = phi i32 [ %13, %10 ], [ %.tr25.ph, %tailrecurse.outer ]
  %6 = icmp eq i32 %5, %.tr25
  br i1 %6, label %7, label %10

7:                                                ; preds = %tailrecurse
  %8 = sext i32 %.tr23 to i64
  %9 = getelementptr inbounds [2097152 x %struct.node], ptr @tree1, i64 0, i64 %8
  %.sroa.0.0.copyload = load i32, ptr %9, align 4, !tbaa !5
  ret i32 %.sroa.0.0.copyload

10:                                               ; preds = %tailrecurse
  tail call void @_Z6shift1iii(i32 noundef %.tr23, i32 noundef %.tr24.ph, i32 noundef %.tr25)
  %11 = shl i32 %.tr23, 1
  %12 = add nsw i32 %.tr25, %.tr24.ph
  %13 = ashr i32 %12, 1
  %14 = icmp sgt i32 %13, %0
  br i1 %14, label %tailrecurse, label %15

15:                                               ; preds = %10
  %16 = or disjoint i32 %11, 1
  br label %tailrecurse.outer
}

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" }

!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"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass