; LLVM IR from VastoLorde95/Competitive-Programming :: Codeforces/200 Division 1/D/D.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"

@tree = external dso_local global [2097152 x i32], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z4pushi(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
define dso_local noundef i32 @_Z5queryiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #2 {
  %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
  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
  %12 = load i32, ptr %7, align 4, !tbaa !5
  call void @_Z4pushi(i32 noundef %12)
  %13 = load i32, ptr %8, align 4, !tbaa !5
  %14 = load i32, ptr %9, align 4, !tbaa !5
  %15 = icmp eq i32 %13, %14
  br i1 %15, label %16, label %21

16:                                               ; preds = %4
  %17 = load i32, ptr %7, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [2097152 x i32], ptr @tree, i64 0, i64 %18
  %20 = load i32, ptr %19, align 4, !tbaa !5
  store i32 %20, ptr %5, align 4
  br label %46

21:                                               ; preds = %4
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  %22 = load i32, ptr %8, align 4, !tbaa !5
  %23 = load i32, ptr %9, align 4, !tbaa !5
  %24 = add nsw i32 %22, %23
  %25 = ashr i32 %24, 1
  store i32 %25, ptr %10, align 4, !tbaa !5
  %26 = load i32, ptr %6, align 4, !tbaa !5
  %27 = load i32, ptr %10, align 4, !tbaa !5
  %28 = icmp sle i32 %26, %27
  br i1 %28, label %29, label %36

29:                                               ; preds = %21
  %30 = load i32, ptr %6, align 4, !tbaa !5
  %31 = load i32, ptr %7, align 4, !tbaa !5
  %32 = mul nsw i32 %31, 2
  %33 = load i32, ptr %8, align 4, !tbaa !5
  %34 = load i32, ptr %10, align 4, !tbaa !5
  %35 = call noundef i32 @_Z5queryiiii(i32 noundef %30, i32 noundef %32, i32 noundef %33, i32 noundef %34)
  store i32 %35, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %45

36:                                               ; preds = %21
  %37 = load i32, ptr %6, align 4, !tbaa !5
  %38 = load i32, ptr %7, align 4, !tbaa !5
  %39 = mul nsw i32 %38, 2
  %40 = add nsw i32 %39, 1
  %41 = load i32, ptr %10, align 4, !tbaa !5
  %42 = add nsw i32 %41, 1
  %43 = load i32, ptr %9, align 4, !tbaa !5
  %44 = call noundef i32 @_Z5queryiiii(i32 noundef %37, i32 noundef %40, i32 noundef %42, i32 noundef %43)
  store i32 %44, ptr %5, align 4
  store i32 1, ptr %11, align 4
  br label %45

45:                                               ; preds = %36, %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  br label %46

46:                                               ; preds = %45, %16
  %47 = load i32, ptr %5, align 4
  ret i32 %47
}

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 = { 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"}


; 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"

@tree = external dso_local local_unnamed_addr global [2097152 x i32], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_Z4pushi(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z5queryiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  tail call void @_Z4pushi(i32 noundef %1)
  %5 = icmp eq i32 %2, %3
  br i1 %5, label %tailrecurse.outer._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %4, %tailrecurse.outer
  %.tr25.ph33 = phi i32 [ %.tr2529, %tailrecurse.outer ], [ %3, %4 ]
  %.tr24.ph32 = phi i32 [ %15, %tailrecurse.outer ], [ %2, %4 ]
  %.tr23.ph31 = phi i32 [ %14, %tailrecurse.outer ], [ %1, %4 ]
  br label %9

tailrecurse.outer._crit_edge:                     ; preds = %tailrecurse.outer, %tailrecurse, %4
  %.tr23.lcssa = phi i32 [ %1, %4 ], [ %12, %tailrecurse ], [ %14, %tailrecurse.outer ]
  %6 = sext i32 %.tr23.lcssa to i64
  %7 = getelementptr inbounds [2097152 x i32], ptr @tree, i64 0, i64 %6
  %8 = load i32, ptr %7, align 4, !tbaa !5
  ret i32 %8

9:                                                ; preds = %.lr.ph, %tailrecurse
  %.tr2529 = phi i32 [ %.tr25.ph33, %.lr.ph ], [ %11, %tailrecurse ]
  %.tr2328 = phi i32 [ %.tr23.ph31, %.lr.ph ], [ %12, %tailrecurse ]
  %10 = add nsw i32 %.tr2529, %.tr24.ph32
  %11 = ashr i32 %10, 1
  %.not = icmp slt i32 %11, %0
  %12 = shl nsw i32 %.tr2328, 1
  br i1 %.not, label %tailrecurse.outer, label %tailrecurse

tailrecurse:                                      ; preds = %9
  tail call void @_Z4pushi(i32 noundef %12)
  %13 = icmp eq i32 %.tr24.ph32, %11
  br i1 %13, label %tailrecurse.outer._crit_edge, label %9

tailrecurse.outer:                                ; preds = %9
  %14 = or disjoint i32 %12, 1
  %15 = add nsw i32 %11, 1
  tail call void @_Z4pushi(i32 noundef %14)
  %16 = icmp eq i32 %15, %.tr2529
  br i1 %16, label %tailrecurse.outer._crit_edge, label %.lr.ph
}

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" }

!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,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass