; LLVM IR from abhisheknaiidu/dsa :: Educative/pattern-subsets/sub.ll (Z3bfsSt6vectorIiSaIiEERS_IS1_SaIS1_EES1_)

; 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::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 }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3bfsSt6vectorIiSaIiEERS_IS1_SaIS1_EES1_(ptr noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef %2) #0 personality ptr @__gxx_personality_v0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca %"class.std::vector", align 8
  %12 = alloca ptr, align 8
  %13 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %14, ptr noundef nonnull align 8 dereferenceable(24) %2)
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %49, %3
  %16 = load i32, ptr %7, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  %19 = icmp ult i64 %17, %18
  br i1 %19, label %21, label %20

20:                                               ; preds = %15
  store i32 2, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %52

21:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = call noundef i64 @_ZNKSt6vectorIS_IiSaIiEESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %22) #3
  %24 = trunc i64 %23 to i32
  store i32 %24, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  store i32 0, ptr %10, align 4, !tbaa !9
  br label %25

25:                                               ; preds = %41, %21
  %26 = load i32, ptr %10, align 4, !tbaa !9
  %27 = load i32, ptr %9, align 4, !tbaa !9
  %28 = icmp slt i32 %26, %27
  br i1 %28, label %30, label %29

29:                                               ; preds = %25
  store i32 5, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  br label %48

30:                                               ; preds = %25
  call void @llvm.lifetime.start.p0(i64 24, ptr %11) #3
  %31 = load ptr, ptr %5, align 8, !tbaa !5
  %32 = load i32, ptr %10, align 4, !tbaa !9
  %33 = sext i32 %32 to i64
  %34 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %31, i64 noundef %33) #3
  call void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %11, ptr noundef nonnull align 8 dereferenceable(24) %34)
  %35 = load i32, ptr %7, align 4, !tbaa !9
  %36 = sext i32 %35 to i64
  %37 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %36) #3
  invoke void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %11, ptr noundef nonnull align 4 dereferenceable(4) %37)
          to label %38 unwind label %44

38:                                               ; preds = %30
  %39 = load ptr, ptr %5, align 8, !tbaa !5
  invoke void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %39, ptr noundef nonnull align 8 dereferenceable(24) %11)
          to label %40 unwind label %44

40:                                               ; preds = %38
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %11) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %11) #3
  br label %41

41:                                               ; preds = %40
  %42 = load i32, ptr %10, align 4, !tbaa !9
  %43 = add nsw i32 %42, 1
  store i32 %43, ptr %10, align 4, !tbaa !9
  br label %25, !llvm.loop !11

44:                                               ; preds = %38, %30
  %45 = landingpad { ptr, i32 }
          cleanup
  %46 = extractvalue { ptr, i32 } %45, 0
  store ptr %46, ptr %12, align 8
  %47 = extractvalue { ptr, i32 } %45, 1
  store i32 %47, ptr %13, align 4
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %11) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %53

48:                                               ; preds = %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  br label %49

49:                                               ; preds = %48
  %50 = load i32, ptr %7, align 4, !tbaa !9
  %51 = add nsw i32 %50, 1
  store i32 %51, ptr %7, align 4, !tbaa !9
  br label %15, !llvm.loop !13

52:                                               ; preds = %20
  ret void

53:                                               ; preds = %44
  %54 = load ptr, ptr %12, align 8
  %55 = load i32, ptr %13, align 4
  %56 = insertvalue { ptr, i32 } poison, ptr %54, 0
  %57 = insertvalue { ptr, i32 } %56, i32 %55, 1
  resume { ptr, i32 } %57
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) #0 align 2

; 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)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIS_IiSaIiEESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), 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 @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

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

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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 = !{!"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"

%"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 }

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3bfsSt6vectorIiSaIiEERS_IS1_SaIS1_EES1_(ptr noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull %2) local_unnamed_addr #0 personality ptr @__gxx_personality_v0 {
  %4 = alloca %"class.std::vector", align 8
  tail call void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %2)
  %5 = tail call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  %.not = icmp eq i64 %5, 0
  br i1 %.not, label %._crit_edge18, label %.lr.ph17

._crit_edge18:                                    ; preds = %._crit_edge, %3
  ret void

.lr.ph17:                                         ; preds = %3, %._crit_edge
  %indvars.iv20 = phi i64 [ %indvars.iv.next21, %._crit_edge ], [ 0, %3 ]
  %6 = call noundef i64 @_ZNKSt6vectorIS_IiSaIiEESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #3
  %7 = trunc i64 %6 to i32
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %.lr.ph17
  %wide.trip.count = and i64 %6, 2147483647
  br label %.lr.ph

._crit_edge:                                      ; preds = %14, %.lr.ph17
  %indvars.iv.next21 = add nuw nsw i64 %indvars.iv20, 1
  %9 = call noundef i64 @_ZNKSt6vectorIiSaIiEE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24) %0) #3
  %10 = icmp ugt i64 %9, %indvars.iv.next21
  br i1 %10, label %.lr.ph17, label %._crit_edge18, !llvm.loop !5

.lr.ph:                                           ; preds = %.lr.ph.preheader, %14
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %14 ]
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %4) #3
  %11 = call noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %1, i64 noundef %indvars.iv) #3
  call void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %4, ptr noundef nonnull align 8 dereferenceable(24) %11)
  %12 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %indvars.iv20) #3
  invoke void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24) %4, ptr noundef nonnull align 4 dereferenceable(4) %12)
          to label %13 unwind label %15

13:                                               ; preds = %.lr.ph
  invoke void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 8 dereferenceable(24) %4)
          to label %14 unwind label %15

14:                                               ; preds = %13
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %4) #3
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !7

15:                                               ; preds = %13, %.lr.ph
  %16 = landingpad { ptr, i32 }
          cleanup
  call void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24) %4) #3
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %4) #3
  resume { ptr, i32 } %16
}

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIS_IiSaIiEESaIS1_EE9push_backERKS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #0 align 2

; 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 #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i64 @_ZNKSt6vectorIS_IiSaIiEESaIS1_EE4sizeEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(24) ptr @_ZNSt6vectorIS_IiSaIiEESaIS1_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEEC2ERKS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEE9push_backERKi(ptr noundef nonnull align 8 dereferenceable(24), 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 @_ZNSt6vectorIiSaIiEEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

declare i32 @__gxx_personality_v0(...)

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorIiSaIiEED2Ev(ptr noundef nonnull align 8 dereferenceable(24)) unnamed_addr #2 align 2

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

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 nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}
!7 = distinct !{!7, !6}


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