; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/393 Division 1/Problem C/C.ll (Z5queryiiii)

; 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, i32 }

@tree = external dso_local global [262144 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
define dso_local noundef i32 @_Z5queryiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #1 {
  %5 = alloca i32, 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 %20

18:                                               ; preds = %4
  %19 = load i32, ptr %8, align 4, !tbaa !5
  store i32 %19, ptr %5, align 4
  br label %62

20:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  %21 = load i32, ptr %7, align 4, !tbaa !5
  %22 = shl i32 %21, 1
  store i32 %22, ptr %10, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  %23 = load i32, ptr %10, align 4, !tbaa !5
  %24 = add nsw i32 %23, 1
  store i32 %24, ptr %11, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #2
  %25 = load i32, ptr %8, align 4, !tbaa !5
  %26 = load i32, ptr %9, align 4, !tbaa !5
  %27 = add nsw i32 %25, %26
  %28 = ashr i32 %27, 1
  store i32 %28, ptr %12, align 4, !tbaa !5
  %29 = load i32, ptr %11, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  %31 = getelementptr inbounds [262144 x %struct.node], ptr @tree, i64 0, i64 %30
  %32 = getelementptr inbounds %struct.node, ptr %31, i32 0, i32 0
  %33 = load i32, ptr %32, align 8, !tbaa !9
  %34 = load i32, ptr %6, align 4, !tbaa !5
  %35 = sub nsw i32 %33, %34
  %36 = icmp sgt i32 %35, 0
  br i1 %36, label %37, label %43

37:                                               ; preds = %20
  %38 = load i32, ptr %6, align 4, !tbaa !5
  %39 = load i32, ptr %11, align 4, !tbaa !5
  %40 = load i32, ptr %12, align 4, !tbaa !5
  %41 = load i32, ptr %9, align 4, !tbaa !5
  %42 = call noundef i32 @_Z5queryiiii(i32 noundef %38, i32 noundef %39, i32 noundef %40, i32 noundef %41)
  store i32 %42, ptr %5, align 4
  store i32 1, ptr %13, align 4
  br label %61

43:                                               ; preds = %20
  %44 = load i32, ptr %6, align 4, !tbaa !5
  %45 = load i32, ptr %11, align 4, !tbaa !5
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds [262144 x %struct.node], ptr @tree, i64 0, i64 %46
  %48 = getelementptr inbounds %struct.node, ptr %47, i32 0, i32 1
  %49 = load i32, ptr %48, align 4, !tbaa !11
  %50 = add nsw i32 %44, %49
  %51 = load i32, ptr %11, align 4, !tbaa !5
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds [262144 x %struct.node], ptr @tree, i64 0, i64 %52
  %54 = getelementptr inbounds %struct.node, ptr %53, i32 0, i32 0
  %55 = load i32, ptr %54, align 8, !tbaa !9
  %56 = sub nsw i32 %50, %55
  %57 = load i32, ptr %10, align 4, !tbaa !5
  %58 = load i32, ptr %8, align 4, !tbaa !5
  %59 = load i32, ptr %12, align 4, !tbaa !5
  %60 = call noundef i32 @_Z5queryiiii(i32 noundef %56, i32 noundef %57, i32 noundef %58, i32 noundef %59)
  store i32 %60, ptr %5, align 4
  store i32 1, ptr %13, align 4
  br label %61

61:                                               ; preds = %43, %37
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  br label %62

62:                                               ; preds = %61, %18
  %63 = load i32, ptr %5, align 4
  ret i32 %63
}

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 = { 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 = !{!10, !6, i64 0}
!10 = !{!"_ZTS4node", !6, i64 0, !6, i64 4}
!11 = !{!10, !6, i64 4}


; 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, i32 }

@tree = external dso_local local_unnamed_addr global [262144 x %struct.node], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef i32 @_Z5queryiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  br label %tailrecurse.outer

tailrecurse.outer:                                ; preds = %16, %4
  %.tr.ph = phi i32 [ %19, %16 ], [ %0, %4 ]
  %.tr21.ph = phi i32 [ %8, %16 ], [ %1, %4 ]
  %.tr22.ph = phi i32 [ %.tr22, %16 ], [ %2, %4 ]
  %.tr23.ph = phi i32 [ %11, %16 ], [ %3, %4 ]
  br label %tailrecurse

tailrecurse:                                      ; preds = %tailrecurse.outer, %7
  %.tr21 = phi i32 [ %9, %7 ], [ %.tr21.ph, %tailrecurse.outer ]
  %.tr22 = phi i32 [ %11, %7 ], [ %.tr22.ph, %tailrecurse.outer ]
  %5 = add nsw i32 %.tr22, 1
  %6 = icmp eq i32 %5, %.tr23.ph
  br i1 %6, label %20, label %7

7:                                                ; preds = %tailrecurse
  %8 = shl i32 %.tr21, 1
  %9 = or disjoint i32 %8, 1
  %10 = add nsw i32 %.tr23.ph, %.tr22
  %11 = ashr i32 %10, 1
  %12 = sext i32 %9 to i64
  %13 = getelementptr inbounds [262144 x %struct.node], ptr @tree, i64 0, i64 %12
  %14 = load i32, ptr %13, align 8, !tbaa !5
  %15 = icmp sgt i32 %14, %.tr.ph
  br i1 %15, label %tailrecurse, label %16

16:                                               ; preds = %7
  %gep = getelementptr [262144 x %struct.node], ptr getelementptr inbounds (i8, ptr @tree, i64 4), i64 0, i64 %12
  %17 = load i32, ptr %gep, align 4, !tbaa !10
  %18 = sub i32 %.tr.ph, %14
  %19 = add i32 %18, %17
  br label %tailrecurse.outer

20:                                               ; preds = %tailrecurse
  ret i32 %.tr22
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) 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, !7, i64 0}
!6 = !{!"_ZTS4node", !7, i64 0, !7, i64 4}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 4}


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