; LLVM IR from abeaumont/competitive-programming :: hackerearth/january-circuits-18/classic-task.ll (Z6insertRSt6vectorI4nodeSaIS0_EEiii)

; 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::tuple" = type { %"struct.std::_Tuple_impl" }
%"struct.std::_Tuple_impl" = type { %"struct.std::_Tuple_impl.5", %"struct.std::_Head_base.6" }
%"struct.std::_Tuple_impl.5" = type { %"struct.std::_Head_base" }
%"struct.std::_Head_base" = type { i32 }
%"struct.std::_Head_base.6" = type { i32 }
%struct.node = type { i32, i32, %"class.std::vector.0" }
%"class.std::vector.0" = type { %"struct.std::_Vector_base.1" }
%"struct.std::_Vector_base.1" = type { %"struct.std::_Vector_base<std::tuple<int, int>, std::allocator<std::tuple<int, int>>>::_Vector_impl" }
%"struct.std::_Vector_base<std::tuple<int, int>, std::allocator<std::tuple<int, int>>>::_Vector_impl" = type { %"struct.std::_Vector_base<std::tuple<int, int>, std::allocator<std::tuple<int, int>>>::_Vector_impl_data" }
%"struct.std::_Vector_base<std::tuple<int, int>, std::allocator<std::tuple<int, int>>>::_Vector_impl_data" = type { ptr, ptr, ptr }

; 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
define dso_local void @_Z6insertRSt6vectorI4nodeSaIS0_EEiii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #1 {
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca %"class.std::tuple", align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  store i32 %3, ptr %8, align 4, !tbaa !9
  %10 = load i32, ptr %7, align 4, !tbaa !9
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = load i32, ptr %6, align 4, !tbaa !9
  %13 = sext i32 %12 to i64
  %14 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %11, i64 noundef %13) #3
  %15 = getelementptr inbounds %struct.node, ptr %14, i32 0, i32 0
  %16 = load i32, ptr %15, align 8, !tbaa !11
  %17 = icmp sle i32 %10, %16
  br i1 %17, label %18, label %33

18:                                               ; preds = %4
  %19 = load i32, ptr %8, align 4, !tbaa !9
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = load i32, ptr %6, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %20, i64 noundef %22) #3
  %24 = getelementptr inbounds %struct.node, ptr %23, i32 0, i32 1
  %25 = load i32, ptr %24, align 4, !tbaa !17
  %26 = icmp sge i32 %19, %25
  br i1 %26, label %27, label %33

27:                                               ; preds = %18
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = load i32, ptr %6, align 4, !tbaa !9
  %30 = sext i32 %29 to i64
  %31 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %28, i64 noundef %30) #3
  %32 = getelementptr inbounds %struct.node, ptr %31, i32 0, i32 2
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  call void @_ZSt10make_tupleIJRiS0_EESt5tupleIJDpNSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeEEEDpOS4_(ptr dead_on_unwind writable sret(%"class.std::tuple") align 4 %9, ptr noundef nonnull align 4 dereferenceable(4) %7, ptr noundef nonnull align 4 dereferenceable(4) %8)
  call void @_ZNSt6vectorISt5tupleIJiiEESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %32, ptr noundef nonnull align 4 dereferenceable(8) %9)
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  br label %67

33:                                               ; preds = %18, %4
  %34 = load i32, ptr %7, align 4, !tbaa !9
  %35 = load ptr, ptr %5, align 8, !tbaa !5
  %36 = load i32, ptr %6, align 4, !tbaa !9
  %37 = mul nsw i32 %36, 2
  %38 = sext i32 %37 to i64
  %39 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %35, i64 noundef %38) #3
  %40 = getelementptr inbounds %struct.node, ptr %39, i32 0, i32 1
  %41 = load i32, ptr %40, align 4, !tbaa !17
  %42 = icmp sle i32 %34, %41
  br i1 %42, label %43, label %49

43:                                               ; preds = %33
  %44 = load ptr, ptr %5, align 8, !tbaa !5
  %45 = load i32, ptr %6, align 4, !tbaa !9
  %46 = mul nsw i32 %45, 2
  %47 = load i32, ptr %7, align 4, !tbaa !9
  %48 = load i32, ptr %8, align 4, !tbaa !9
  call void @_Z6insertRSt6vectorI4nodeSaIS0_EEiii(ptr noundef nonnull align 8 dereferenceable(24) %44, i32 noundef %46, i32 noundef %47, i32 noundef %48)
  br label %49

49:                                               ; preds = %43, %33
  %50 = load i32, ptr %8, align 4, !tbaa !9
  %51 = load ptr, ptr %5, align 8, !tbaa !5
  %52 = load i32, ptr %6, align 4, !tbaa !9
  %53 = mul nsw i32 %52, 2
  %54 = add nsw i32 %53, 1
  %55 = sext i32 %54 to i64
  %56 = call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %51, i64 noundef %55) #3
  %57 = getelementptr inbounds %struct.node, ptr %56, i32 0, i32 0
  %58 = load i32, ptr %57, align 8, !tbaa !11
  %59 = icmp sge i32 %50, %58
  br i1 %59, label %60, label %67

60:                                               ; preds = %49
  %61 = load ptr, ptr %5, align 8, !tbaa !5
  %62 = load i32, ptr %6, align 4, !tbaa !9
  %63 = mul nsw i32 %62, 2
  %64 = add nsw i32 %63, 1
  %65 = load i32, ptr %7, align 4, !tbaa !9
  %66 = load i32, ptr %8, align 4, !tbaa !9
  call void @_Z6insertRSt6vectorI4nodeSaIS0_EEiii(ptr noundef nonnull align 8 dereferenceable(24) %61, i32 noundef %64, i32 noundef %65, i32 noundef %66)
  br label %67

67:                                               ; preds = %60, %49, %27
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt5tupleIJiiEESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt10make_tupleIJRiS0_EESt5tupleIJDpNSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeEEEDpOS4_(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 4, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #2

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 = { 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 = !{!12, !10, i64 0}
!12 = !{!"_ZTS4node", !10, i64 0, !10, i64 4, !13, i64 8}
!13 = !{!"_ZTSSt6vectorISt5tupleIJiiEESaIS1_EE", !14, i64 0}
!14 = !{!"_ZTSSt12_Vector_baseISt5tupleIJiiEESaIS1_EE", !15, i64 0}
!15 = !{!"_ZTSNSt12_Vector_baseISt5tupleIJiiEESaIS1_EE12_Vector_implE", !16, i64 0}
!16 = !{!"_ZTSNSt12_Vector_baseISt5tupleIJiiEESaIS1_EE17_Vector_impl_dataE", !6, i64 0, !6, i64 8, !6, i64 16}
!17 = !{!12, !10, i64 4}


; 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::tuple" = type { %"struct.std::_Tuple_impl" }
%"struct.std::_Tuple_impl" = type { %"struct.std::_Tuple_impl.5", %"struct.std::_Head_base.6" }
%"struct.std::_Tuple_impl.5" = type { %"struct.std::_Head_base" }
%"struct.std::_Head_base" = type { i32 }
%"struct.std::_Head_base.6" = type { i32 }

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z6insertRSt6vectorI4nodeSaIS0_EEiii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #1 {
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca %"class.std::tuple", align 4
  br label %tailrecurse

tailrecurse:                                      ; preds = %25, %4
  %.tr16 = phi i32 [ %1, %4 ], [ %26, %25 ]
  %8 = sext i32 %.tr16 to i64
  %9 = tail call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %8) #3
  %10 = load i32, ptr %9, align 8, !tbaa !5
  %.not = icmp slt i32 %10, %2
  br i1 %.not, label %18, label %11

11:                                               ; preds = %tailrecurse
  %12 = tail call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %8) #3
  %13 = getelementptr inbounds i8, ptr %12, i64 4
  %14 = load i32, ptr %13, align 4, !tbaa !15
  %.not13 = icmp sgt i32 %14, %3
  br i1 %.not13, label %18, label %15

15:                                               ; preds = %11
  store i32 %2, ptr %5, align 4, !tbaa !16
  store i32 %3, ptr %6, align 4, !tbaa !16
  %16 = tail call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %8) #3
  %17 = getelementptr inbounds i8, ptr %16, i64 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %7) #3
  call void @_ZSt10make_tupleIJRiS0_EESt5tupleIJDpNSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeEEEDpOS4_(ptr dead_on_unwind nonnull writable sret(%"class.std::tuple") align 4 %7, ptr noundef nonnull align 4 dereferenceable(4) %5, ptr noundef nonnull align 4 dereferenceable(4) %6)
  call void @_ZNSt6vectorISt5tupleIJiiEESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24) %17, ptr noundef nonnull align 4 dereferenceable(8) %7)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %7) #3
  br label %.loopexit

18:                                               ; preds = %11, %tailrecurse
  %19 = shl nsw i32 %.tr16, 1
  %20 = sext i32 %19 to i64
  %21 = tail call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %20) #3
  %22 = getelementptr inbounds i8, ptr %21, i64 4
  %23 = load i32, ptr %22, align 4, !tbaa !15
  %.not14 = icmp slt i32 %23, %2
  br i1 %.not14, label %25, label %24

24:                                               ; preds = %18
  tail call void @_Z6insertRSt6vectorI4nodeSaIS0_EEiii(ptr noundef nonnull align 8 dereferenceable(24) %0, i32 noundef %19, i32 noundef %2, i32 noundef %3)
  br label %25

25:                                               ; preds = %24, %18
  %26 = or disjoint i32 %19, 1
  %27 = sext i32 %26 to i64
  %28 = tail call noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24) %0, i64 noundef %27) #3
  %29 = load i32, ptr %28, align 8, !tbaa !5
  %.not15 = icmp sgt i32 %29, %3
  br i1 %.not15, label %.loopexit, label %tailrecurse

.loopexit:                                        ; preds = %25, %15
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 8 dereferenceable(32) ptr @_ZNSt6vectorI4nodeSaIS0_EEixEm(ptr noundef nonnull align 8 dereferenceable(24), i64 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorISt5tupleIJiiEESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZSt10make_tupleIJRiS0_EESt5tupleIJDpNSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeEEEDpOS4_(ptr dead_on_unwind noalias writable sret(%"class.std::tuple") align 4, ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #2

attributes #0 = { mustprogress 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 = { 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, !7, i64 0}
!6 = !{!"_ZTS4node", !7, i64 0, !7, i64 4, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"_ZTSSt6vectorISt5tupleIJiiEESaIS1_EE", !11, i64 0}
!11 = !{!"_ZTSSt12_Vector_baseISt5tupleIJiiEESaIS1_EE", !12, i64 0}
!12 = !{!"_ZTSNSt12_Vector_baseISt5tupleIJiiEESaIS1_EE12_Vector_implE", !13, i64 0}
!13 = !{!"_ZTSNSt12_Vector_baseISt5tupleIJiiEESaIS1_EE17_Vector_impl_dataE", !14, i64 0, !14, i64 8, !14, i64 16}
!14 = !{!"any pointer", !8, i64 0}
!15 = !{!6, !7, i64 4}
!16 = !{!7, !7, i64 0}


; Effective O3 passes: DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass