; LLVM IR from lzyrapx/Competitive-Programming :: LibreOJ/106（Splay）（104基础上加区间）.ll (Z7DeleteXiii)

; 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"

@qv = external dso_local global i32, align 4
@root = external dso_local global [200040 x i32], 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 @_Z7DeleteYRi(ptr noundef nonnull align 4 dereferenceable(4)) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z7DeleteXiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) #1 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  %8 = load i32, ptr %4, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [200040 x i32], ptr @root, i64 0, i64 %9
  call void @_Z7DeleteYRi(ptr noundef nonnull align 4 dereferenceable(4) %10)
  %11 = load i32, ptr %5, align 4, !tbaa !5
  %12 = load i32, ptr %6, align 4, !tbaa !5
  %13 = icmp eq i32 %11, %12
  br i1 %13, label %14, label %15

14:                                               ; preds = %3
  br label %36

15:                                               ; preds = %3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %16 = load i32, ptr %5, align 4, !tbaa !5
  %17 = load i32, ptr %6, align 4, !tbaa !5
  %18 = add nsw i32 %16, %17
  %19 = ashr i32 %18, 1
  store i32 %19, ptr %7, align 4, !tbaa !5
  %20 = load i32, ptr @qv, align 4, !tbaa !5
  %21 = load i32, ptr %7, align 4, !tbaa !5
  %22 = icmp sle i32 %20, %21
  br i1 %22, label %23, label %28

23:                                               ; preds = %15
  %24 = load i32, ptr %4, align 4, !tbaa !5
  %25 = shl i32 %24, 1
  %26 = load i32, ptr %5, align 4, !tbaa !5
  %27 = load i32, ptr %7, align 4, !tbaa !5
  call void @_Z7DeleteXiii(i32 noundef %25, i32 noundef %26, i32 noundef %27)
  br label %35

28:                                               ; preds = %15
  %29 = load i32, ptr %4, align 4, !tbaa !5
  %30 = shl i32 %29, 1
  %31 = or i32 %30, 1
  %32 = load i32, ptr %7, align 4, !tbaa !5
  %33 = add nsw i32 %32, 1
  %34 = load i32, ptr %6, align 4, !tbaa !5
  call void @_Z7DeleteXiii(i32 noundef %31, i32 noundef %33, i32 noundef %34)
  br label %35

35:                                               ; preds = %28, %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  br label %36

36:                                               ; preds = %35, %14
  ret void
}

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"}


; 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"

@qv = external dso_local local_unnamed_addr global i32, align 4
@root = external dso_local global [200040 x i32], align 16

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z7DeleteYRi(ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z7DeleteXiii(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = sext i32 %0 to i64
  %5 = getelementptr inbounds [200040 x i32], ptr @root, i64 0, i64 %4
  tail call void @_Z7DeleteYRi(ptr noundef nonnull align 4 dereferenceable(4) %5)
  %6 = icmp eq i32 %1, %2
  br i1 %6, label %tailrecurse.outer._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3, %tailrecurse.outer
  %.tr15.ph22 = phi i32 [ %.tr1519, %tailrecurse.outer ], [ %2, %3 ]
  %.tr14.ph21 = phi i32 [ %16, %tailrecurse.outer ], [ %1, %3 ]
  %.tr.ph20 = phi i32 [ %15, %tailrecurse.outer ], [ %0, %3 ]
  br label %7

7:                                                ; preds = %.lr.ph, %tailrecurse
  %.tr1519 = phi i32 [ %.tr15.ph22, %.lr.ph ], [ %9, %tailrecurse ]
  %.tr18 = phi i32 [ %.tr.ph20, %.lr.ph ], [ %11, %tailrecurse ]
  %8 = add nsw i32 %.tr1519, %.tr14.ph21
  %9 = ashr i32 %8, 1
  %10 = load i32, ptr @qv, align 4, !tbaa !5
  %.not = icmp sgt i32 %10, %9
  %11 = shl i32 %.tr18, 1
  br i1 %.not, label %tailrecurse.outer, label %tailrecurse

tailrecurse:                                      ; preds = %7
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [200040 x i32], ptr @root, i64 0, i64 %12
  tail call void @_Z7DeleteYRi(ptr noundef nonnull align 4 dereferenceable(4) %13)
  %14 = icmp eq i32 %.tr14.ph21, %9
  br i1 %14, label %tailrecurse.outer._crit_edge, label %7

tailrecurse.outer:                                ; preds = %7
  %15 = or disjoint i32 %11, 1
  %16 = add nsw i32 %9, 1
  %17 = sext i32 %15 to i64
  %18 = getelementptr inbounds [200040 x i32], ptr @root, i64 0, i64 %17
  tail call void @_Z7DeleteYRi(ptr noundef nonnull align 4 dereferenceable(4) %18)
  %19 = icmp eq i32 %16, %.tr1519
  br i1 %19, label %tailrecurse.outer._crit_edge, label %.lr.ph

tailrecurse.outer._crit_edge:                     ; preds = %tailrecurse.outer, %tailrecurse, %3
  ret void
}

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