; LLVM IR from Py-Contributors/AlgorithmsAndDataStructure :: C++/Algorithms/BinarySearch/AllocatedMinimumPages.ll (Z5booksRSt6vectorIiSaIiEEi)

; 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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z10isPossibleRSt6vectorIiSaIiEEii(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef, 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: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #0 align 2

; 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 @_Z5booksRSt6vectorIiSaIiEEi(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1) #2 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %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
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = sext i32 %10 to i64
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %12) #4
  %14 = icmp ugt i64 %11, %13
  br i1 %14, label %15, label %16

15:                                               ; preds = %2
  store i32 -1, ptr %3, align 4
  br label %68

16:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %17, i64 noundef 0) #4
  %19 = load i32, ptr %18, align 4, !tbaa !9
  store i32 %19, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  store i32 0, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  store i32 0, ptr %8, align 4, !tbaa !9
  br label %20

20:                                               ; preds = %41, %16
  %21 = load i32, ptr %8, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %23) #4
  %25 = icmp ult i64 %22, %24
  br i1 %25, label %27, label %26

26:                                               ; preds = %20
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  br label %44

27:                                               ; preds = %20
  %28 = load i32, ptr %7, align 4, !tbaa !9
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = load i32, ptr %8, align 4, !tbaa !9
  %31 = sext i32 %30 to i64
  %32 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %29, i64 noundef %31) #4
  %33 = load i32, ptr %32, align 4, !tbaa !9
  %34 = add nsw i32 %28, %33
  store i32 %34, ptr %7, align 4, !tbaa !9
  %35 = load ptr, ptr %4, align 8, !tbaa !5
  %36 = load i32, ptr %8, align 4, !tbaa !9
  %37 = sext i32 %36 to i64
  %38 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %35, i64 noundef %37) #4
  %39 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %6, ptr noundef nonnull align 4 dereferenceable(4) %38)
  %40 = load i32, ptr %39, align 4, !tbaa !9
  store i32 %40, ptr %6, align 4, !tbaa !9
  br label %41

41:                                               ; preds = %27
  %42 = load i32, ptr %8, align 4, !tbaa !9
  %43 = add nsw i32 %42, 1
  store i32 %43, ptr %8, align 4, !tbaa !9
  br label %20, !llvm.loop !11

44:                                               ; preds = %26
  br label %45

45:                                               ; preds = %65, %44
  %46 = load i32, ptr %6, align 4, !tbaa !9
  %47 = load i32, ptr %7, align 4, !tbaa !9
  %48 = icmp sle i32 %46, %47
  br i1 %48, label %49, label %66

49:                                               ; preds = %45
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %50 = load i32, ptr %6, align 4, !tbaa !9
  %51 = load i32, ptr %7, align 4, !tbaa !9
  %52 = add nsw i32 %50, %51
  %53 = ashr i32 %52, 1
  store i32 %53, ptr %9, align 4, !tbaa !9
  %54 = load ptr, ptr %4, align 8, !tbaa !5
  %55 = load i32, ptr %9, align 4, !tbaa !9
  %56 = load i32, ptr %5, align 4, !tbaa !9
  %57 = call noundef i32 @_Z10isPossibleRSt6vectorIiSaIiEEii(ptr noundef nonnull align 8 dereferenceable(24) %54, i32 noundef %55, i32 noundef %56)
  %58 = icmp ne i32 %57, 0
  br i1 %58, label %59, label %62

59:                                               ; preds = %49
  %60 = load i32, ptr %9, align 4, !tbaa !9
  %61 = sub nsw i32 %60, 1
  store i32 %61, ptr %7, align 4, !tbaa !9
  br label %65

62:                                               ; preds = %49
  %63 = load i32, ptr %9, align 4, !tbaa !9
  %64 = add nsw i32 %63, 1
  store i32 %64, ptr %6, align 4, !tbaa !9
  br label %65

65:                                               ; preds = %62, %59
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  br label %45, !llvm.loop !13

66:                                               ; preds = %45
  %67 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %67, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %68

68:                                               ; preds = %66, %15
  %69 = load i32, ptr %3, align 4
  ret i32 %69
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #3

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 = { inlinehint 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 #4 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}


; 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"

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z10isPossibleRSt6vectorIiSaIiEEii(ptr noundef nonnull align 8 dereferenceable(24), i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z5booksRSt6vectorIiSaIiEEi(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = alloca i32, align 4
  %4 = sext i32 %1 to i64
  %5 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  %6 = icmp ult i64 %5, %4
  br i1 %6, label %30, label %7

7:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %8 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef 0) #3
  %9 = load i32, ptr %8, align 4, !tbaa !5
  store i32 %9, ptr %3, align 4, !tbaa !5
  %10 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  %.not30 = icmp eq i64 %10, 0
  br i1 %.not30, label %.preheader, label %.lr.ph

.preheader.loopexit:                              ; preds = %.lr.ph
  %.pre = load i32, ptr %3, align 4, !tbaa !5
  br label %.preheader

.preheader:                                       ; preds = %.preheader.loopexit, %7
  %11 = phi i32 [ %9, %7 ], [ %.pre, %.preheader.loopexit ]
  %.019.lcssa = phi i32 [ 0, %7 ], [ %14, %.preheader.loopexit ]
  %.not26 = icmp sgt i32 %11, %.019.lcssa
  br i1 %.not26, label %._crit_edge, label %.lr.ph28

.lr.ph:                                           ; preds = %7, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %7 ]
  %.01924 = phi i32 [ %14, %.lr.ph ], [ 0, %7 ]
  %12 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #3
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = add nsw i32 %13, %.01924
  %15 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv) #3
  %16 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %3, ptr noundef nonnull align 4 dereferenceable(4) %15)
  %17 = load i32, ptr %16, align 4, !tbaa !5
  store i32 %17, ptr %3, align 4, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %18 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  %19 = icmp ugt i64 %18, %indvars.iv.next
  br i1 %19, label %.lr.ph, label %.preheader.loopexit, !llvm.loop !9

.lr.ph28:                                         ; preds = %.preheader, %28
  %20 = phi i32 [ %29, %28 ], [ %11, %.preheader ]
  %.127 = phi i32 [ %.2, %28 ], [ %.019.lcssa, %.preheader ]
  %21 = add nsw i32 %20, %.127
  %22 = ashr i32 %21, 1
  %23 = call noundef i32 @_Z10isPossibleRSt6vectorIiSaIiEEii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %22, i32 noundef %1)
  %.not23 = icmp eq i32 %23, 0
  br i1 %.not23, label %26, label %24

24:                                               ; preds = %.lr.ph28
  %25 = add nsw i32 %22, -1
  %.pre34 = load i32, ptr %3, align 4, !tbaa !5
  br label %28

26:                                               ; preds = %.lr.ph28
  %27 = add nsw i32 %22, 1
  store i32 %27, ptr %3, align 4, !tbaa !5
  br label %28

28:                                               ; preds = %26, %24
  %29 = phi i32 [ %.pre34, %24 ], [ %27, %26 ]
  %.2 = phi i32 [ %25, %24 ], [ %.127, %26 ]
  %.not = icmp sgt i32 %29, %.2
  br i1 %.not, label %._crit_edge, label %.lr.ph28, !llvm.loop !11

._crit_edge:                                      ; preds = %28, %.preheader
  %.lcssa = phi i32 [ %11, %.preheader ], [ %29, %28 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  br label %30

30:                                               ; preds = %2, %._crit_edge
  %.0 = phi i32 [ %.lcssa, %._crit_edge ], [ -1, %2 ]
  ret i32 %.0
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3minIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { inlinehint 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 #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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


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