; LLVM IR from upupming/algorithm :: acwing/算法竞赛进阶指南/0x18-总结与练习/162. 黑盒子.ll (Z6adjustv)

; 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"

%"class.std::priority_queue" = type <{ %"class.std::vector", [8 x i8] }>
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::priority_queue.0" = type <{ %"class.std::vector", [8 x i8] }>

@maxHeap = external dso_local global %"class.std::priority_queue", align 8
@minHeap = external dso_local global %"class.std::priority_queue.0", align 8
@cur = external dso_local global i32, align 4

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6adjustv() #0 {
  br label %1

1:                                                ; preds = %6, %0
  %2 = call noundef i64 @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25) @maxHeap)
  %3 = load i32, ptr @cur, align 4, !tbaa !5
  %4 = sext i32 %3 to i64
  %5 = icmp ugt i64 %2, %4
  br i1 %5, label %6, label %8

6:                                                ; preds = %1
  %7 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE3topEv(ptr noundef nonnull align 8 dereferenceable(25) @maxHeap)
  call void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(25) @minHeap, ptr noundef nonnull align 4 dereferenceable(4) %7)
  call void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE3popEv(ptr noundef nonnull align 8 dereferenceable(25) @maxHeap)
  br label %1, !llvm.loop !9

8:                                                ; preds = %1
  br label %9

9:                                                ; preds = %19, %8
  %10 = call noundef i64 @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25) @maxHeap)
  %11 = load i32, ptr @cur, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = icmp ult i64 %10, %12
  br i1 %13, label %14, label %17

14:                                               ; preds = %9
  %15 = call noundef i64 @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25) @minHeap)
  %16 = icmp ne i64 %15, 0
  br label %17

17:                                               ; preds = %14, %9
  %18 = phi i1 [ false, %9 ], [ %16, %14 ]
  br i1 %18, label %19, label %21

19:                                               ; preds = %17
  %20 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE3topEv(ptr noundef nonnull align 8 dereferenceable(25) @minHeap)
  call void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(25) @maxHeap, ptr noundef nonnull align 4 dereferenceable(4) %20)
  call void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE3popEv(ptr noundef nonnull align 8 dereferenceable(25) @minHeap)
  br label %9, !llvm.loop !11

21:                                               ; preds = %17
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(25), ptr noundef nonnull align 4 dereferenceable(4)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE3topEv(ptr noundef nonnull align 8 dereferenceable(25)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE3popEv(ptr noundef nonnull align 8 dereferenceable(25)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(25), ptr noundef nonnull align 4 dereferenceable(4)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE3topEv(ptr noundef nonnull align 8 dereferenceable(25)) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE3popEv(ptr noundef nonnull align 8 dereferenceable(25)) #0 align 2

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" }
attributes #1 = { 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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; 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"

%"class.std::priority_queue" = type <{ %"class.std::vector", [8 x i8] }>
%"class.std::vector" = type { %"struct.std::_Vector_base" }
%"struct.std::_Vector_base" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl" = type { %"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" }
%"struct.std::_Vector_base<int, std::allocator<int>>::_Vector_impl_data" = type { ptr, ptr, ptr }
%"class.std::priority_queue.0" = type <{ %"class.std::vector", [8 x i8] }>

@maxHeap = external dso_local global %"class.std::priority_queue", align 8
@minHeap = external dso_local global %"class.std::priority_queue.0", align 8
@cur = external dso_local local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6adjustv() local_unnamed_addr #0 {
  %1 = tail call noundef i64 @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25) @maxHeap)
  %2 = load i32, ptr @cur, align 4, !tbaa !5
  %3 = sext i32 %2 to i64
  %4 = icmp ugt i64 %1, %3
  br i1 %4, label %.lr.ph, label %.preheader

.preheader:                                       ; preds = %.lr.ph, %0
  %5 = tail call noundef i64 @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25) @maxHeap)
  %6 = load i32, ptr @cur, align 4, !tbaa !5
  %7 = sext i32 %6 to i64
  %8 = icmp ult i64 %5, %7
  br i1 %8, label %.lr.ph1, label %.critedge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %9 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE3topEv(ptr noundef nonnull align 8 dereferenceable(25) @maxHeap)
  tail call void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(25) @minHeap, ptr noundef nonnull align 4 dereferenceable(4) %9)
  tail call void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE3popEv(ptr noundef nonnull align 8 dereferenceable(25) @maxHeap)
  %10 = tail call noundef i64 @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25) @maxHeap)
  %11 = load i32, ptr @cur, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = icmp ugt i64 %10, %12
  br i1 %13, label %.lr.ph, label %.preheader, !llvm.loop !9

.lr.ph1:                                          ; preds = %.preheader, %15
  %14 = tail call noundef i64 @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25) @minHeap)
  %.not = icmp eq i64 %14, 0
  br i1 %.not, label %.critedge, label %15

15:                                               ; preds = %.lr.ph1
  %16 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE3topEv(ptr noundef nonnull align 8 dereferenceable(25) @minHeap)
  tail call void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(25) @maxHeap, ptr noundef nonnull align 4 dereferenceable(4) %16)
  tail call void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE3popEv(ptr noundef nonnull align 8 dereferenceable(25) @minHeap)
  %17 = tail call noundef i64 @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25) @maxHeap)
  %18 = load i32, ptr @cur, align 4, !tbaa !5
  %19 = sext i32 %18 to i64
  %20 = icmp ult i64 %17, %19
  br i1 %20, label %.lr.ph1, label %.critedge, !llvm.loop !11

.critedge:                                        ; preds = %.lr.ph1, %15, %.preheader
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(25), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE3topEv(ptr noundef nonnull align 8 dereferenceable(25)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE3popEv(ptr noundef nonnull align 8 dereferenceable(25)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(25)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt4lessIiEE4pushERKi(ptr noundef nonnull align 8 dereferenceable(25), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNKSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE3topEv(ptr noundef nonnull align 8 dereferenceable(25)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt14priority_queueIiSt6vectorIiSaIiEESt7greaterIiEE3popEv(ptr noundef nonnull align 8 dereferenceable(25)) local_unnamed_addr #0 align 2

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" }
attributes #1 = { 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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Effective O3 passes: GlobalOptPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SimplifyCFGPass,TailCallElimPass